turbo head gasket question

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Old Sep 12, 2017 | 08:40 PM
  #1  
93h2beg's Avatar
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From: Northern California
Default turbo head gasket question

Have a sleeved 84 mm b16. B16 head too.

Block has been decked a lot and head shaved a lot (previous to me) Need about .050 of head gasket to make sure I don't have P2V issues. Can I run a standard cometic without issues?

Pistons are at ZERO deck.
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Old Sep 13, 2017 | 03:10 AM
  #2  
Chance EG's Avatar
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Default Re: turbo head gasket question

First off, just going to point out that this isn't something you want to just take a guess on, and without claying the engine to properly check P2V clearance there's no way of actually knowing with certainty. Check the all-motor section, someone recently posted an emulator that calculates P2V clearances and would work to get an idea before testing it physically. You need to find the piston to deck clearance as well, you'll want .030->.040.

Second, the standard Cometic gasket, or to my knowledge any B series MLS, is .030". So if you need .050, no that will not work.

In the drop down here you can select thicker gaskets. See if the .66" one would work for you: http://realstreetperformance.com/Sho...hi-420A_2.html
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Old Sep 13, 2017 | 06:21 PM
  #3  
2kdrift's Avatar
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Default Re: turbo head gasket question

I agree with chance, even with how much great advice you can get on this forum it would not be the greatest decision to simply go with info you find on the net since they cannot physically inspect your situation.

maybe clay the block and better figure out exactly what you are dealing with, also you could run into issues where the timing belt is to large for your application unless you used a thicker HG
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Old Sep 13, 2017 | 08:33 PM
  #4  
93h2beg's Avatar
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Default Re: turbo head gasket question

okay let me apologize for a poorly worded post.

I am wondering if a cometic will hold well under boost, or do i need something special.

The math has been done by the machinist, he told me exactly what i need for thickness.
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Old Sep 13, 2017 | 10:05 PM
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Default Re: turbo head gasket question

I dont see why not, plenty of people use them under boost. They use MLS just like any other HG does for our application. but I will leave this up to someone with more experience since i have never run one
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Old Sep 14, 2017 | 12:58 AM
  #6  
Chance EG's Avatar
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Default Re: turbo head gasket question

Originally Posted by 2kdrift
I dont see why not, plenty of people use them under boost. They use MLS just like any other HG does for our application. but I will leave this up to someone with more experience since i have never run one
Yes, Cometic is very good. JE Pro Seal is also great but not as common. I've never used one but Supertech and GE also make B series MLS gaskets and I wouldn't second guess them either.
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