Harlow Private 4,500 TRIUMPH Spitfire Spitfire Carburetor Rebuild Kit, Weber DGV Downdraft . The 1500 long stroke is not the best for reliability and can suffer serious big end and con rod failures ifnused in a hurried life It does age quite quickly, upping the power wont help much in reliability Clives the best on this Pete clive Members 5.5k Posted October 1, 2017 For a road engine there are a few simple things. .0015 to .002 is acceptable. Crank bearings are supplied standard size and pistons are supplied +0.020" oversize. Right off the bat, this larger engine delivered more torque than its predecessor. How do we feel about con rod lock tabs? Finally the machinist will use a special tool to chamfer (angle) the tops of the bores. Theres nothing quite like the process of pulling apart, fixing and rebuilding a vintage engine. 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. Well we offer that as well. I always use bearings supplied by Jigsaw Racing, and with the above, they are long lasting, even inhigh revving engines. Digital Rev Limiter Pertronix . Dennis Vessey - Performance and Triumph engine building, reconditioning As always, once we test fitted the manifold, we sent it to Swain Tech Coatings to be coated. Triumph Spitfire Market - CLASSIC.COM Degree wheel Degreeing a camshaft I have rebuilt a dozen or so engines (probably double!) Hap, Great article but I must disagree with method for finding TDC. For a reliable road-going engine, careful building, in clean conditions will get you one tha is long-lasting! The Triumph Spitfire is a small British two-seat sports car, introduced at the London Motor Show in 1962. But now you will know what degree of offset key to order. They will weigh the valve springs and use shims as needed to insure the correct valve spring height and seated pressure of the valves and springs. This is done to prevent a piston ring from getting caught and breaking during installation. My GT has them and Rimmers show them on TR2 -4a, but not GTs or Spitfires. They look 10X better in the engine bay on a 1300 or a 1500 than a ZS or Weber and have been around forever. Install the oil pump, remember it is important to disassemble the oil pump, clean the inside whether new or used, lube them, and check the clearances on them per the manual specs. The 1500 is a stroked 1300 and like all stroker engines, they make torque down low, but do not like higher RPMS.