1st gen/323/GLC Engine and Drivetrain Engine/Drivetrain Modification Discussions for 1990-1994 Models (BG chassis) and 1981-1989 GLC/323 Models (BD and BF chassis)

metal head gaskets for the BP

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Old April-21st-2003 | 02:46 PM
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Bruce95fmla
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metal head gaskets for the BP

Has anyone stumbled across any metal head gaskets for the BP motor .. I know that toda makes one, but I wanted to see if anyone else makes one for the BP that lowers compression(thicker gasket) and also is made of metal
Bruce
Old April-21st-2003 | 10:39 PM
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do they maybe sell seals that could increase compression?
Old April-21st-2003 | 11:16 PM
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Bruce95fmla
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Originally posted by PseudoRealityX
a) lowering the compression is STUPID on a BP
b) the stock headgasket is a GOOD piece, and doesn't need replacement
(TURBO) are my plans ,,, isn't lower compression better ...

and is the head gasket metal
bruce
Old April-22nd-2003 | 11:03 AM
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Bruce95fmla
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Originally posted by PseudoRealityX


Bruce, how long have you been around? There is ZERO reason to lower compression on a turbocharged 8.8:1 compression BP. If anything, RAISE it. The highest power stock block BPs have been with 9.5:1 compression.
I have a 96 BP motor ,, are you talking of the GTX motor ,.. I don't have a gtx ..
I thought the BP was 9.0
Bruce
Old April-23rd-2003 | 02:18 PM
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Bruce95fmla
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I do thank you for the info , and I may have been around longer than you , but rember I only gained interest in the 1.8 maybe 6 or 7 months ago .. I am really just getting into it . and will have a better understanding as I am moving along.
anyhow thanks for the answers
Later
Old April-23rd-2003 | 04:27 PM
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Bruce95fmla
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Originally posted by Gro Harlem
the stock head gasket is one of the nicest gaskets i've seen. It IS METAL, but has a silicone coating on both sides and is about 5 layers thick.
Wil thanks for the info ...
check your pm's ,, need ya to do something for me
Bruce
Old April-23rd-2003 | 04:43 PM
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sorry, my question was if there were gaskets made that increase compression
Old April-24th-2003 | 12:52 PM
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Piston Compression

I am rebuilding a BP from a '95 EGT as we speak and was thinking of replacing the pistons with something with a higher compression, like those from a Miata 94-97 BP. Does anyone know if the stock rods can be used with the Miata pistons, or would there be a difference is size/length?
PseudoRealityX, since you seem to know alot about the BP engines, what would you recommend for pistons? And if you were rebuilding a BP, what kind of stuff would you get done?
This question is for anyone who has alot of knowledge of the BP engine.
Also, what is the compression of the stock '95 EGT pistons? Is it the same as the Pro?

And about the head gasket: I have a Felpro head gasket to use when I put everything back together. Is using this gasket a mistake, or are they as good as the stock one?

Last edited by 323; April-24th-2003 at 12:55 PM.
Old April-26th-2003 | 01:09 AM
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Originally posted by Bruce95fmla


(TURBO) are my plans ,,, isn't lower compression better ...

and is the head gasket metal
bruce
custom lower compression pistons are nice , but lets face it , they are played out , you might as well get stock pistons.
Old April-26th-2003 | 03:55 AM
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Played out?

Pink, I don't understand your comment or how the link you added has anything to do with pistons. Could you please explain the reasoning behind your last post.
I am most likely replacing the pistons and was contemplating using higher compression stock miata pistons as long as the rods are the same length. Any advice or insight you can give to me would be great.
I am mostly just trying to build a strong, reliable BP engine and thought of doing some work to it while it is out of the car to give me a little added performance. Maybe 15-20 HP with the porting/polishing, and possibly higher compression pistons. Nothing crazy. I am still fairly new to alot of this, so any pointers would be helpful.
Old May-2nd-2003 | 10:10 AM
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Originally posted by PinkMX-3


custom lower compression pistons are nice , but lets face it , they are played out , you might as well get stock pistons.
lol that was funny. Damn Jesse, you put up a good fight
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