Triumph GT6 engine bodge

In article , Janet Collins writes

The BL parts catalogue for the Mk3 GT6 only lists one "short engine", but does distinguish between pre-KE10000 and post KE10001 pistons.

The differences between early and late Mk3 engines are in the pistons, cylinder head, camshaft, valves, fan, breather system, and carbs. There are no changes to the block.

Quite possibly, but not through having the wrong block.

Thanks, you've put my mind at rest. I'm going to see how the car runs once it's back on the road again before I start messing.

Even if the block did have a different part number, it doesn't mean it can't be used with the majority of parts from an earlier - or later - engine. Could be things like, say, a different fitting for the waterpump, or mechanical take off for a rev-counter. (Just *possible* examples) Doesn't mean it's radically different like stronger etc.

In message , Dave Plowman writes

Late model Spitfires had a block that needed a head-gasket with a 'lipped' seal around each cylinder (AFAIK). Did the six-cylinder engine on the later cars also require a different gasket?

I got caught out with that one too! To say the air was blue must be the understatement of the century!

Yes - late 6 cylinder blocks are "recessed" can't remember the transition but you do need to check - they are not interchangeable!

In article , J writes

Indeed they do, though it's so long since I did my GT6 that I can't remember which type it is. Certainly the 2500S has the recess. Having checked the parts catalogue again I note it does list different head gaskets for KE10001 on, so probably that's the change point.

I would assume, knowing how BL worked, that the short engine doesn't change because the later block is fully compatible with the earlier head and pistons, providing the right gasket is used. Thus if you had a pre-KE10000 GT6 in the mid '70s and managed to crack the block, the dealer repair option would be a post-KE10001 block, probably retaining your existing pistons and head.