Complication with rebuilding my 16V engine, what should I do?
#1
![Question](https://rennlist.com/forums/images/icons/icon5.gif)
So I'm in the middle of doing a complete engine rebuild for my 88 2.5L 16V, after tearing it down I found basically everything needs being replaced, and the cylinder walls are completely destroyed, along with scratches on the pistons and the coating wearing off in areas. I found a donor 8V motor not too far from me that was pretty cheap, the guy said it came out of an 86 so I assumed it would be a late block, but after getting it home I found it has an early M44.02 engine code. I know there are a few differences between the early and late blocks, so the question is am I able to use the block with my DOHC head, and if I am good to use this block what parts am I not able to reuse from my old engine?
#2
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
The first important difference to consider is the timing belt tensioner. The 4 valve engine uses a wider timing belt than the 2 valve engine and a tensioner pulley (also wider) that is fixed in position to the "automatic" tensioner body. The eccentric tensioner pulley of the early engine design is narrower to fit the 2 valve belt.
When sourcing a block and (used) pistons, pay careful attention to the dimensional tolerance group of each to ensure proper clearance between them.
I happen to have a very good condition, 2.5L, 4 valve short block assembly in my shop that I could part with if you are near the northeast US.
When sourcing a block and (used) pistons, pay careful attention to the dimensional tolerance group of each to ensure proper clearance between them.
I happen to have a very good condition, 2.5L, 4 valve short block assembly in my shop that I could part with if you are near the northeast US.
The following users liked this post:
Zirconocene (Yesterday)
The following 2 users liked this post by michaelmount123:
931guru (Yesterday),
Zirconocene (Yesterday)