Triumph Spitfire MK4 from FH25001 and FK25001 prefix. Identify by 1.3/8" diameter crankshaft nose, twin valve springs, 3/8" flywheel bolts and hot water feed outlet on cylinder head
Camshafts will be reprofiled where possible, if not possible, new ones will be offered at a extra cost. Crankshafts are grinded and polished to produce the exact dimensions and surface finish required. Each cylinder block is rebored or resleeved and honed to give the precise surface finish and cross-hatch required. All main housings are measured for size, ovality, taper and weight-graded into engine sets. Every con rod is checked for alignment and weight-graded into engine sets. Oil pump: The clearance between rotor and body is measured. The oil pressure valve is dismantled and cleaned. All non-conforming parts are replaced. All our engines are hot run under their own power in purpose-built test cells. Every engine is subjected to a series of checks and the results are recorded against each specific engine serial number. On all our engines we grant with professional installation 24-month guarantee in accordance with our general terms of trade.