$20.74. 1971 Triumph GT6 with a LS4 V8. None of these points will do you any good though, in reality youll have either turned to alcoholism or been committed to a lunatic asylum long before the task is completed. Add to Cart. These items are shipped from and sold by different sellers. As always, check your local emissions laws. One day. Do both methods and you will see the dial indicator method can lead you astray by a couple degrees. Position it toward #1 piston and then bring the piston toward the top of the block. Chances are your cam timing is probably not where it needs to be. For the earlier 4 cylinder engines we always fit upgraded rear oil seals, an . A 439 inch small block that put out 739HP on pump gas. Move the crankshaft the normal operating rotation (clockwise when facing the front of the engine) until you see the needle reach maximum camshaft lift. The vehicle was based on a design produced for Standard-Triumph in 1957 by Italian designer Giovanni Michelotti. By Tim Suddard Triumph Spitfire 1500 LHD Completely body off restored Triumph Spitfire 1500 LHD. I use a Moss high performance Pro Sport model on my MGB racecar and can attest to its high quality. Save my name, email, and website in this browser for the next time I comment. Remember they have to go in the exact spot they came out of it. As of March 2007, all of our engine block work is carried out to the extremes of perfection on a CNCengine machining center. What have you done to upgrade your 1500's? In England, Triumph Spitfire 1500s were sold with dual SU carbs. Sign in to ask questions, share photos, and access all website features. Guess 3 mains and a thrust bearing that falls out were state of the art back then. I think Ford later made a knock-off of the carb that was used on 4 cylinder mustangs and later US made Mercury Capris (1980s). It's the 1500cc variant, however, its had some cylinder head work and a fast road camshaft. Maybe Moss Motoring can find a engine builder that specializes in these engines to do article on them, I know I would read it with great interest. That is not true but often repeated. At least the MG stayed 'all British'. My spit was a 79, and when I compare it to the other tech available at the time it just looks sad. Street engines are warrantied for 12 months / 12,000 miles (contact us for complete details of the warranty). All rights reserved. They don't appear on any of the Canley GT6 diagrams, but they were certainly there the first time I took the sump off in 1979, or there abouts. Installing new piston pins and pistons require a rod heater, where the rod is heated to about 1200 degrees and then the piston and pin is installed on that rod quickly before it cools. Is there a howitzer story there? The cost for this setup is only about $400 to $500, depending on the source and condition of the parts. The thing to remember is that the engine is many different systems that all have to work together. Hap, Great article but I must disagree with method for finding TDC. Bare A-type OD base rebuild pricing is $1650. Spitfire Performance Upgrade Parts Fast delivery worldwide Payment options including PayPal British car experts 01522 568000 1-855-746-2767 At some point in the nearish future, I will be stripping and rebuilding my Spitfire's engine. Similar upgrades but I milled .125" off the head, sourced a pair of SU's from a '67 Spit, and installeda header from Victoria British. My apologies. The 123 ignition(distributor) is a modification that employs spark balancing, like used in formula race cars. Zero out the indicator and double check to make sure you are correct. 1980 1500 Spitfire, I just added new cap, rotor, wires, pertronix ignition and flamethrower coil. For example, most modern black composite material head gaskets require no coating or sealer. Because this CNCengine center also bundles multiple machining operations into one piece of equipment, we no longer have to worry about different individual machines introducing any deviations in tolerances between machining steps. Triumph Spitfire - Engine rebuild - YouTube Restoration of my Triumph Spitfire showing the newly rebuilt engine by Prather Racing - Kent Prather and myself. When you achieve the same degrees BTDC and ATDC your wheel will show TRUE TDC. Timing assembly always replace the chain, timing gear and timing chain tensioner. Do you need custom pistons for this? Need oversized lifter / tappet bores? 4-SPEED, DISC WHEELS. But not just any pump--SU carb float valves will allow gas by if it's under too much pressure, so you need a low-pressure pump or pressure restrictor in the system. For engines with a lifter cover or external lifter access, install the liftersif not already pre-assembled. Its really more simple than people make it out to be. July 19, 2014 @ 4:35 am View cart for details. $118.99. Rotate the engine by hand; I like to do this from the rear of the engine as to not disturb the degree wheels setting. All engine parts are cleaned, prepped and machined or new. and you mention getting new sleeves and piston sets. Adjustable cam gears will have about 20 degrees of variable adjustment to work with assuring you can get the cam timing exactly where you need. Crank bearings are supplied standard size and pistons are supplied +0.020" oversize. The factory paired these preferred carburetors with a free-flowing, cast-iron exhaust manifold that emptied into twin pipes. Thanks Pete and Clive - as I say, I'm not after a racing engine or even upping the power particularly. Install the valve cover. My engine is very user friendly around town and on the highway. You have to have a good idea of your expectations and an understanding of the steps required to get what you want. Once all of the pistons are in you can rotate the engine to the access the bottom side. This pristine car is fa. Mount the rear engine plate, flywheel and clutch. A complete rebuild includes the following: EVALUATION As an engine is torn down, each part is checked for excessive wear, damage and failure. ], Story by Tim SuddardPhotography asCredited. After boring, your block will be honed to get the proper finish on the cylinder wall. At the end of the day if it needs a rebuild every 40/50k its notthe end of the world as that is plenty of years use! Hadone on the street will all the competition Cooper S parts. I used new bolts and tabs, but this was 1980s so bolts would be from the good bucket. As for the MG Midget, I preferred the 1275. Install the main bearings in the block with just a thin coat of non-synthetic 30WT motor oil, then install the crankshaft and coat the exposed journal with oil. I have 185/60 13 tires which are a little lower so I put TR7 gears in the diff. I remember reading a brief article in Road & Track back in the 70s that with the two SU setup, there's a problem that at higher RPM the mechanical fuel pump doesn't deliver enough gas, causing fuel starvation. Harlow Private 4,500 TRIUMPH Spitfire Spitfire If you are using an adjustable cam gear then you can do all of this without removing the timing gears again unlike a offset key which can have +/- 1-2 degree tolerance range. After refreshing the carburetors, the next step is simply to replace the intake and exhaust manifolds with the European-spec pieces. as perspicacity of this Triumph Spitfire 1500 Engine can be taken as skillfully as picked to act. The, The traditional Silodrome was a carnival sideshow attraction also called the Wall of Death." As you'd expect Vesseys are the specialists in the repair and reconditioning of the Triumph 4 and 6 cylinder engines. For instance,the 2014 Renault F1 engine has a stroke of only 53mm but is limited to 15,000rpm! A larger motor was needed. And real-world performance? Lube should be used any place one part makes contact with another that could cause frictionthe exception being the piston and cylinder walls. and have never used new bolts for any bearing caps. I use .005 before and after maximum camshaft lift. Clutch kit. Because these parts are designed by Triumph to fit the cars, the swap is a snap and the results are nothing shortofremarkable. Coat with oil, install and torque the #1 main cap to manual specs. Install all bolts on the exterior of the block, for example, threaded plugs, oil pressure regulator, distributor drive and base, water pump, timing cover, crank pulley, motor mount brackets and seals (always put grease on seal lips to avoid damage during installation). For most, dropping off the cylinder head complete to a machine shop is the best idea. You will want to ask around for the shop that has the best reputation for crankshaft work. Inspect the rocker arm bushings and replace if needed. The car was largely based upon the chassis of the Triumph Herald saloon, but shortened and without the Herald's outrigger sections. Pinning them with a couple of 4-40 flathead brass machine screws is a simple effective solution. There is no need to hurry; time is your friend when degreasing. Protecting it by reducing the stress. 20 Take your time and give your starter a break if it takes a while. Come on fellas, Mike can't be the only one to reply??? You'd hopethey'd have put them back for the sake of a few pence if they reduced engine failure rates That's interesting, I wonder why they are on my late GT6 mk3? No problem. 3 main engines were definitelymore common but Triumph had a lock on using only half the thrust washers other manufacturers (like MG) did in that period - a definite shortcoming. You will do this similarly to your crankshaft end float. Power is supplied to the wheels via a 4 speed manual with overdrive gearbox. Inspect your starter ring gear. If you are using a performance camshaft you may have to advance the cam timing per the cam manufacturers instructions. This may seem like a lot of clearance to your machinist who is not used to working with our engines. Triumph Spitfire, 1962-1981 (Haynes Manuals) $2995. The Triumph SC (small car) engines were never derived fromtractors. (TR6 engine block in the process of being CNCmachined, cylinders being bored). Cam bearings I prefer the full circle type Having trouble posting or changing forum settings? Thanks for the article though it just reinforces my decision. I also experienced the thrust washer failure which ruined the crank so my advice is to keep your foot off the clutch as much as possible. (Not for racing, just to bring them into the 21st Century and to get my little Midget screaming down the road). Triumphs and Jags back in 1972 (58k scanned image of an official price sheet) Building an engine test stand Assorted first hand tech rebuilds Rebuilding Seats Windshield chrome Trim Oil Cooler Installation New Pistons and rings Grinding Rings New Dashboard Front Spring lowering Stainless Steel Brake Lines Rear axle tricks Interior Trim The snaps were so that I remembered how everything went, so I could put it back together again. Connecting Rods Now stop at .005 before the indicator reaches zero, or maximum lift, record your readings at the degree wheel. All in all, even though there are more desirable sports cars out there the 1500 Midget has been a fun car to have owned for the past 18 years. I was always much more partial to the 1296cc Spitfire engine than the 1500. 9.99 Download now. How have you set the timing?? There are some things I liked about the spit but not enough to keep it around. Whilst I don't have a bottomless budget, I would rather spend a few quid more now and not regret it later! | Never miss an article, [Editor's Note: This article originally ran in the March 2013 issue of Classic Motorsports. 100bhp should be achievable fairly easily. Use rubber gloves, even water-based chemicals can be harsh on skin. I discussed addinglock tabs with the engineer when I did my Herald engine, but he warned against it. Buy the HD/LC or whatever they are called, a few a set more than, that shell looks pretty much like its hard ever run , ive seen much worst in brand new engines off production, But the Spitfire could be easily stroked to 1493 ccto regain some performance. Keep advancing the timing until you do, then retard just enough so you don't get any pinking. Once you have confirmed oil pressure you are ready to fire the engine for the first time. Triumph Spitfire 1500 engine and gearbox rebuild We've just finished the rebuild of this fast road engine for a locally owned Triumph Spitfire. Record your reading. $4315. Make sure you watching this film right to the end, I guarantee youll get a laugh out of it. Exhaust valves Took the car out for a ride and have a small backfire after shifting. Fill the engine with all fluids. 6000 15.20 17.50 The solution is an electric fuel pump in the trunk, and bypass the mechanical pump. Most cylinder head parts are inexpensive. Install your newly rebuilt engine in your car. I like to get parts down to bare metal, because painting over old paint is a mixed bag of nuts. Dealer 3,695 Triumph Spitfire 1500 1978 Triumph Spitfire 1500cc in yellow, has been dry stored. Total price: $93.10. You need to plastigauge the bearing clearances. Lube the rod bolt threads with motor oil or fastener assembly lube, like the one ARP makes, and torque your rod bolts to manual spec. Make sure your crankshaft is at BDC (bottom dead center) meaning the crankshaft journal is closest to bottom of the engine. From your local part store you will need to purchase the green plastigauge with a measurement range for .001-.003. Get notified when we add a new Triumph Spitfire Manual. There is nothing inherently wrong with a properly designed 3 main bearing engine. However bad previous repairs, rust, and a desire for more power, resulted in Intake valves Consider oversize for better flow But yes, I do enjoy it and try and go out in it as much as possible - I bought it to drive and not be a show car. Remove no more than .010 so that the head gasket will seal properly. A window into racing in the 1960s | Sebring Special MGBs: How an MG TC gave way to a worldwide British car enterprise. Degree wheel 5.00 postage. Crankshaft grinding is a very skilled part of the machine shop phase. I prefer tri-metal bearings; they are what the factory originally supplied for many cars. In England, Triumph Spitfire 1500s were sold with dualSUcarbs. Trending price is based on prices over last 90 days. As a rule of thumb, its best to replace the rod bolts. Deck H $3,341.18 New ---- Used Dart SBF SHP Iron Block 4.125 Bore 9.500 DH - 31375235 $2,999.00 New ---- Used Magnafluxing typically involves applying a fluid, or powder to the crankshaft, then viewing it under a black light. Scott Sewell. First, scrape off old gaskets as much as you can, then move on to degreasing. Crankshaft wear: the 1493cc engine fitted to the Spitfire 1500 has problems of its own, as the crankshaft can wear badly, along with the pistons and rings. Is your favorite classic car properly insured? Set your dial indicator on the top side of that push rod. The cars are to enjoy, not be a burden. Hardened exhaust seat inserts are a must for the hotter burning unleaded fuels used today. Weight is mass times acceleration, andI've done this for a TR6, the worst possible case. Started out as just a collection of snaps as I stripped down an engine bought off ebay. Timing is set by ear - to be honest one reason for the rebuild/replacement is that the timing is all over the place when I use a timing light - which is either due to a crap dizzy or the pulley moving (Which is not as tight as I'd like - but the bolt is very much tight! All engines are run and broken in prior to installation or shipping to the customer. Quantum Mechanics, Ltd. Install and torque the main caps one at time. On the bench, apiston and gudgeon pin weighs 346gms, but this is under 1g, the acceleration due to Earth's gravity, In the 2.5L, at 6000rpm the piston reaches more than 2000g, andweighs nearly a tonne! Bolting on the new carburetors is easy, and since this is a factory setup, the throttle cable will perfectly join the existing system. Altering the factory cam timing can be done in one of two wayseither by using offset camshaft keys or with an adjustable camshaft gear. And the engine was a huge part of that. " Create your own unique website with customizable templates. You can email the site owner to let them know you were blocked. The rubber insulator can crack and wear out over time. The factory paired these preferred carburetors with a free-flowing, cast-iron exhaust manifold that emptied into twin pipes. Get Started WishboneClassics is able to perform certain machining operations on your engine that you cannot have done elsewhere. I did the SU conversion source from Quantum Mechanics along with a 5 speed transmission also sourced from Quantum. BLACK SOFT TOP. Some information and prices may be differenttoday. After your 20-minute break-in, do your final tuning. To truly rebuild SU carbs, you must send them to an expert; replacing those throttle shaft bushings requires specialized equipment. Triumph had a lock on using only half the thrust washers Line boring insures that all crank journals are in perfect alignment and properly sized. Thanks Pete - as it happens I picked up a "new" engine today - has been largely rebuilt - needs a new oil pump as it wasn't changed, but does seem to be well done overall. (To replace my old engine, which had suffered catastrophic failure). Refer to your workshop manual for the proper spec but it will likely be .002-.005. The bolts holding the adjustment on the cam gear are small (-28), and if you torqued your cam retaining nut later, which has a much higher torque spec, you could overpower the smaller bolts and change your cam timing. Use new gaskets and properly clean all mating surfaces. Triumph TR engines. This may take several minutes. Buy your used Triumph Spitfire motors/engines from us and save time and money. Austin Healey, MG or Triumph we can build it better than original and to any performance level. Bottom end I might just get it balanced and reground if needed and look at different pistons and rods but also look at budgets. Sometimes old paint will strip off if soaked long enough. The crankshaft needs to be measured for wear and sizing. Spitfire/GT6 site suggests E for engine, to avoid confusion with commission number. I don't have a clue what else is in there yet but I intend to pull it down and find out before I run it hard. (585) 889-2786 Our carbs did need to be freshened, though, and we did that ourselves. I tried the Weber DGV for a while but the SU's are more responsive plus I get better gas mileage ( the 5 speed helps). Minimum engine rebuild service price is $10,000 USD for a fully rebuilt dyno tested engine package (fully assembled engine, carbs, ignition, exhaust manifold, etc) All engines being rebuilt are torque plate honed for superior cylinder bore geometry and improved piston ring seal Install the camshaft, front engine plate and cam thrust plate Once MPS goes up to 20 metres/second, you can expect reduced reliability and early failure, unless the engine has been speciallydesigned and built and/or made from exotic materials. I hope this far into the game you already have a good manual. Measured engine output had improved nicely: We posted 65 horsepower and 78 lb.-ft. of torque during our next visit to the dyno. Set up the magnetic base and dial indicator on the front side of the cam, or cam gear, and moving the camshaft front to rear reading the movement on the indicator. A heat shield is highly recommended for these as well. | Remove no more than .010 so that the head gasket will seal properly. Our initial zero-to-60 testing was just as depressing. Question is, should ILoctite the bolts and if so which spec should I use. The big issue with Spit motors was not wear onTW, it was preventing them from dropping. Theres nothing quite like the process of pulling apart, fixing and rebuilding a vintage engine. I highly recommend Moss uprated valve seals. Drivetrain Early Spitfire and Heraldengines had lock tabs (https://www.canleyclassics.com/triumph-spitfire-mki/ii-crankshaft-and-camshaft). The only reason you would install valve seats on the intake side is if a cylinder head has had many valve jobs in its life. Cylinders are bored to the next oversize Crankshaft is turned to the next undersize Never assume a new oil pump should not be taken apart and checked. Valve guides Cylinder Head Southern Rebore Services carried out the machining work. You may have seen them at county fairs the vertical velodromes were originally built from old grain silos, leading to the name "silo-drome.". Some connecting rods have floating piston pins, the bushings will need to be checked for play and wear as well. 57,315 M Kurt Tanner Motorcars (866) 461-3172 Santa Ana, CA 92705 (934 miles away) 40 1970 Triumph Spitfire 76,029 mi 1300cc $ 19,700 or $324/mo Make sure the engine does not overheat. Most machine shops have a special tool that can cut all three angles at the same time. AVAILABLE IN STANDARD OR ALL REGULAR OVERSIZES [ E-MAIL OR TEL. Engine was previously rebuild by Ivor Searle, looks brand new under the rocker cover.. Ps, fuel tank is disconnected, now pumping fuel out of a fresh can. About the Author: As an engine tuner and builder for more than 30 years, Hap Waldrop is the go-to guy on British car forums. The goal is to spin the engine in the normal rotation to maximum cam lift (now zero on the dial indicator) and stop at same given point before and after max lift has been achieved. Dial indicator on a magnetic base. At this point the machine shop is ready to assemble the cylinder head. "Blueprinting" the crank, making absolutely sure that it is built to precise spec, with best quality parts, is what you have been discussing with Pete and Clive. I would like to strengthen the bottom end - if that is actually possible? 7500 19.00 21.88 Sold my spit last year and it was one ofthe few cars I never regretted selling. Spitfire/GT6 TS Imported Automotive, 108 South Jefferson St., Pandora, Ohio, 45877, USA Tel 800.543.6648 (USA & Canada only) 419.384.3022 (Tech / General Information) Budget a day to do the work, plus the cost of modifying your exhaust system, the carb-freshening kits and the paint and cleaning supplies. The key here is getting the entire setup, including the linkages. Carburetor Rebuild Kit, Weber DGV Downdraft . Single DCOEs on the 8 port heads suffer from uneven fuel distribution between the inside two cylinders and the outside two owing to the unequal runner lengths of the available intake manifolds. I have only ever torqued up to the factory spec, and never had any issues. Use a wooden, or plastic hammer handle, to tap the top of the piston down into the bore. Description Triumph Spitfire - Classic Car Fuel Injection Conversion Based on our Premium Vehicle Kit for 2 SU carburettor upto 125 BHP This kit contains all the parts needed for our Classic Fuel Injection system (you do not need to order anything else from our range ) Save around 200 when buying as complete kit In this way, conrods can be made 15% lighter and stronger than the OE ones. The Triumph Spitfire is a small British two-seat sports car, introduced at the London Motor Show in 1962. I'm also probably going to get another engine and after a bit of general inspection (The one I'm going to look at has already been largely rebuilt) and replacing the oil and water pumps - which haven't been done and then swap engines over - it also has a twin exhaust and a 4-2-1 header which is almost new. Install the cam thrust plate, timing gears, chain and tensioner (if applicable) following the workshop manual guidelines. Does the backfire come from timing, or carb? Its important that this be accounted for because too much clearance would cause a loss of oil pressure and too little clearance could cause damage to the bearings and crankshaft. Discuss with the machine shop the piston size. Install the cylinder head and rocker arm assembly. Mathew Members 4.2k Posted March 30, 2021 Follow the advice of the head gasket manufacturer in regards to coating. This firm finds these parts overseas and imports them for American enthusiasts. Crankshaft If theres any drawback, its the legal ramifications. It's easy! I would like to fit a sports exhaust at the same time too. Triumph produced the fun and affordable Spitfire for 18 years, during which time over 314,000 were built. A Speedi-Sleeve can be used to renew the surface. I started a similar thread on the MGE and got quite a bit of good feedback, so I thought I'd see what you guys have to say. Vandervell do come up on eBay from time to time, but most are showing their age from long term storage. The piston should now slip into the bore. xmFnpTdjkUcUnQtjY4A6zvd5f4fG3r3ftcbDZwzrnG90J4oOQ3fXP5leOHPeW4da. Once the engine starts you want to set the idle at approx. Install the piston and connecting rods Dont let any steps get overlooked. And here's the reason why. Good information. .0015 to .002 is acceptable. Dealer 12,500 Triumph spitfire Triumph spitfire SOLD 1973 not sure of mileage last owner se. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Copyright 2022 Moss Motors, Ltd. All Rights Reserved. Install lifters, pushrods and cylinder head. I know I was able to replace the thrust bearing in my TR-6 by dropping the pan and removing the rear main bearing cap, but can't remember if it the same on the Spitfire. The spitfre mk3 profile cam is very good, or even the TR5 profile. Rod bolts I recommend replacement. This should enable even 'inferior' bearings to be long lasting. MACHINE SHOP WORK Each engine I take to the machine shop is: Magnafluxed for cracks in the block, head and crankshaft. The three-main-bearing design did not lend itself well to hard use. Right off the bat, this larger engine delivered more torque than its predecessor. Very nice condition 50 year old car. swaintech.com, Driving the short-lived MGA Twin Cam is magical, Classic Roadster Showdown: Alfa Romeo Spider vs. the Triumph TR6, An MGC Coupe that recalls the glory days of motorsport. Carefully remove the main cap and use the graph on the paper slip the plastigauge comes with to determine the clearance. If you have a single row chain I suggest you upgrade to a double row chain if available. The Spitfires exhaust system is epically simple, and any competent shop can build you a nice system. The exhaust manifold goes on first, underneath the intake manifold. Most cam lifters can be installed after the cam, but on the MG and Austin Healey A-Series engine, the lifters have to be installed before the cam is installed. Third, install the main bearings in the main capsbut dont install the caps yet. My GT has them and Rimmers show them on TR2 -4a, but not GTs or Spitfires. The biggest problem with these engines, however, had to be the single, emissions-era Zenith StrombergCVcarburetor. Nov 14, 2022 Many British engines have cam bearings in the block. If all checks out take the car for a short drive (dont stray far from home, just in case) varying the rpm from 2,000 to 4,000. AnglefireSeptember 30, 2017 in Engine. Other Areas of your Engine Tim mentions the Weber DGV as a suitable alternative carb. Payen gaskets where possible, use the best crank bearings you can find (vandervell but you will have to be VERY lucky) and you WILL need a thermostatic oil cooler, and millers CSS20/60 oil a good idea. Digital Rev Limiter Pertronix . The engine rebuild kits can be anything from stock, to mild, to wild street performance, to a even a full out race engine. All pricing, component availability, and terms of business are subject to change without notice. Apologies, confusion re std. Its okay if areas around the water jacket do not completely clean up. This is where most cracks occur, so the proper filet radius is important for the overall strength of the crankshaft. Features The Webers are 1 step up from the stock ZS carb, but suffer from a lack of tuning experience and info on this side of the pond. Regrinding the original cast iron exhaust seat is a short term answer, as valve seal will be lost in a short period of time. TR3B-TR6 four speed gearbox with A-type OD base rebuild pricing $3250. They can handle the disassembly, cleaning, checking for cracks, machining and assembly for you. Some connecting rods will be a press fit type, and not need servicing other than pressing the old piston off and the new pistons on. We carry a wide-ranging catalog of used Triumph engines for all applications including gas and diesel engines. Please comment on anything from main studs to cams to roller rockers to engine machining procedures, to compression ratios, to carbs, etc..Please post any good links on this topic as well. Have them measured by your machinist. Use the ring compressor around the piston at the point where the rings are located on the piston to compress the ring as it would be when in the cylinder. A parts washer makes this job a lot easier, but if you dont have one you can make a temporary parts washer out a 5-gallon bucket and waterbased degreasers. This is a six-cylinder engine, displacing 2 liters. As JohnD mentioned, you can optimise the pump to minimise clearances between the body and rotor, see:http://tr6.danielsonfamily.org/OilPump.htm. Thrust washers needed to be maintained, or crank walk would destroy themaswell. Pete, The 1500 long stroke is not the best for reliability and can suffer serious big end and con rod failuresifnused in ahurried life, It does age quite quickly, upping the power wont help much in reliability. While adding main bearings and redesigning thrust washers is not an easy feat, at least one of the engines problems can be addressed: without much headachebettercarburetion. Feb 2016: We are currently only rebuilding Triumph TR3B (four synchro) through TR6 transmissions and A and J type . Mainly as we now run unleaded fuel, not old 4 star! They could save you a big hassle later.
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