Tore my old B18a1 apart... found what was wrong.

Mister_Perkins

Oil Field Worker
Well, I tore my b18a1 apart that seized up. When I took the connecting rods off, I noticed on cylinder 2, the bearing for the connecting rod bearing was all melted down looking. I'm pretty sure thats what the problem was. Now I have a question though.. I pulled all of the pistons out of the cylinders, and they all looked fine. no scratches on the pistons, or the cylinder walls. The only thing I noticed was there was this brown goop shit all over the one piston / cylinder where the connecting rod bearing seized up. As far as the crankshaft goes, where the connecting rod bearing was, Its scratched up. So i'm guessing that I can't reuse that? Am I right? Can I safely use the block again? Or should I not even bother? If I can reuse it, i'de like to build it up as a spare engine so if I blow my new ITR engine up, I can just drop that engine in.. but If I shouldnt even bother, then i'll just scrap it.
 

dc2GS-R

Super Moderator
You can have the crank turned by a machine shop and replace all the bearing to match the new clearance as long as it isn't scratched up too bad
 

Backwoodz Tuner

New Member
Yeah and your block should be a ok if it was jus a spun wore out bearing. Jus get a micrometer and check the journal for excess wear.Factory limitations can be found in pretty much any haynes or chilton manual.
 

Mister_Perkins

Oil Field Worker
dc2GS-R said:
You can have the crank turned by a machine shop and replace all the bearing to match the new clearance as long as it isn't scratched up too bad
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Alright ... well thats good to know 8) Now as far as the brown sludge goes, does anyone have any idea what that is? I'll take some pix for yall
 


DB2 B17A1

Corner Junkie
Your crank is scarred but as stated earlier you can probably machine it and get new bearings to match the clearance. As far as that brown shit looks like bad burnt oil, but im not sure.
 

Backwoodz Tuner

New Member
That brown shit is probably from a wore out valve seal, that leaked oil on top your piston that eventually made it down between the rings. Well that's my guesstamation
 


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