85-85 Exhaust manifolds
The engine is getting these "shorty header" exhaust manifolds that came on '86 and '86 32V engines. (Maybe others, worldwide) A lot more cross-area than the cast "lima bean" manifolds that are stock.
The basically bolt right up although I did need to drill out one hole. On the end ports (1,4,5,8) there are two holes and one was bigger than the other. They didn't quite slide nicely down the studs. I drilled out the small hole to match the larger one and it went on nicely. The two holes were spaced correctly on-center so the big hole extended closer to the pipe. The middle flanges are slots.
The manifolds come with little fitting for exhaust gas testing. I looked for O2 sensors but the threads are M14x1.5 and no O2 sensors are that small. I think they're all M18, anyways. I've plugged those with oil drain plugs for a Honda. That's the gold bolt near the end. Removed the rubber seal and added a crush ring. Didn't have to cut the bolt or anything.
__________________
1980 928S Euro x2
1987 944 N/A
Last edited by GlenL; 08-26-2018 at 12:18 AM.
|