Hi guys I've got a failed 1998 uk turbo motor and was considering buying a 19999 long block to replace it with. Will it be possible to bolt my inlet and even my exhaust manifolds from the 98 onto the 99?
Thanks in advance.

 

inlet manifold wont fit mate. would need to put 98 heads on a 99 block for it to work

 

Exhaust manifold will fit , the inlet won't.

Swapping the heads over from your current car to the 1999one is a bodge to make it fit, as you'll have problems with squish and compression (as the head/piston design between the 2 is different regarding the combustion area/dome)

 

i did this with my type r, 2000 sort block and used my 1998 heads all good no problems at all !

 

It works, but is is a bodge job.
The difference is in the heads and pistons.

I believe the pre99 block has a larger dome in the pistons and a smaller combustion chamber, whereas the 99/2000 have smaller domes in the pistons, but a larger sized combustion chamber (or vice versa, I always screw this up)

So one could use a 98 engine wih 99 heads, with the only effects being slightly lower compression and non-optimal squish.This I would consider if on a budget,maybe.
The other way around leads to a higher compression, and this can lead to an engine which is down on power as the higher compression could lead to knock/retardation of the ignition etc.

 

Thanks for the advice guys, I was looking at a good 1999 long block so wanted to bolt my manifold straight to it but looks like I'll be going down the short block route and re using my heads which are mint as they have just been stripped down and cleaned then skimmed.

 

Phase 2 and after are + 2cc per cylinder, you need to cc the block/piston to work out the correct gaskets to use, however you will move the cam timing out slightly if you fit thicker/thinner gaskets than std to that engine. If you wanted to fit 98 heads on a 99 short engine 1.2mm gaskets will give approx 8.4:1 cr. The thinner gaskets used on phase 2 engines essentially makes up the extra 2cc in the heads.

 

You can use a thinker head gaskets and do a compression calculation, the 99 block run tighter bore/piston clearances and the 99 head's have sodium filled v/v's to help with heat issues and v/v burning. So you can use Phase 2 short block with phase 1.5 head's "sti head's with underbucket shim's are the best" lots of forms on this and take what you read on here with a pinch of salt