It usually works but I'd feel bad if he didn't catch it. Good call, humfrz.

I'm curious as to why the right bank would be different from the left bank ....:iono:

Maybe @Nigelr32 can shed some light on that ..??


humfrz

It was an early method to address uneven oil flow/pressure issues. The heads were redesigned by MY15.

Oh, OK ....... but if the heads are identical (symmetrically opposed), why would the oil flow/pressure be different from one bank to the other ..... ??

:iono:


humfrz

I don't know any more than that. Not enough info in the service manual and I have yet to tear into one. :(

Hi Puma,

I only too pleased to help. The larger hole goes in the left bank on all eight posts. When I say left I mean your drivers side in the USA. Later engines have all sixteen posts with small holes.

thanks, everything i had found so far (which wasn't much) pointed towards that direction so i am happy to have an other confirmation.

thanks a lot everyone.

Thanks, Nigel! How's your race car coming? Your work is top shelf.

Thanks buddy. My thread is pretty much up to date and I also keep my Instagram updated. I'm GT86_nige on Instagram.

Well hurry up, dammit. :D


No, seriously, I'm really enjoying your thread. Thank you, sir.