Miata Turbo Forum - Boost cars, acquire cats. - Oil ports don't line on on block/head

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dsamani

12-16-2019 10:00 PM

Oil ports don't line on on block/head

Hey guys, I'm putting a VVT head onto a VVT block and the rear holes for what I think is the oil drain doesn't line up. Headgasket is on correctly, but it doesn't line up.

The holes on Cylinder 2 and 3 line up, but 1 and 4 do not.

Is this by design, perhaps to restrict oil flow out of the head? Or is there a problem?

https://cimg2.ibsrv.net/gimg/www.mia...057f7a4a02.jpg

curly

12-16-2019 11:53 PM

Normal.

DNMakinson

12-17-2019 07:05 AM

If you have a coolant reroute, consider using a 1999-2000 head gasket. I think that is still the preferred approach.

If you don’t have a reroute, you should; and if your engine is out, now is the best time to do it.

dsamani

12-17-2019 02:38 PM

Quote:

Originally Posted by DNMakinson (Post 1557387)

Waaaaay ahead of you man!

skylinecalvin

12-17-2019 06:42 PM

Wait, shouldn't ANY 1.8 headgasket work (outside of NB2's)? I'm hoping I didn't order a wrong headgasket for my vvt build.

DNMakinson

12-17-2019 06:54 PM

Quote:

Originally Posted by skylinecalvin (Post 1557464)

Wait, shouldn't ANY 1.8 headgasket work (outside of NB2's)? I'm hoping I didn't order a wrong headgasket for my vvt build.

I think they are all the same from '94 - '00, but was not certain, so I played it safe.

Turbomack

12-17-2019 10:00 PM

It should probably look and lay down like this but someone should validate that since I have a different setup.

https://cimg4.ibsrv.net/gimg/www.mia...e53481e81.jpeg

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