Jwbetley

Hi,

I have a d16a6, TT H-beams, 75.5mm vitaras and a .42/.48 50ish trim turbo. The block was decked and the head was resurfaced. I decided to use the stock head gasket which is not metal; it's composite. The head gasket blew and I'd like to purchase a metal one.

I would like some advice on what to get. Would it be worth it to get an OEM 3-layer metal HG and If so, what car/engine is compatible with a d16a6? I am also thinking about using a cosmetic HG, maybe thinner (.027, .030) to raise my compression up a bit. Not sure if it is worth it though. Please comment.

Please point me i the right direction. Thanks

-Justin


P.S. Am I a complete idiot for running a composite HG on a turbo engine? When researching, I noticed that everyone swore by OEM hg's with FI. I just didn't realize that the OEM Hg's being used with success were metal and not composite.

CRXdan

Just use any OEM or aftermarket replacment MLS head gasket for a 92-95 civic si d16z6. I have a beckarnley or w/e in mine and no issues. (made in japan)

and yes composite HG's suck on boosted motors. it pays to do research. drink a 6 pack and read honda-tech for 3 hours, itll save you money

TunerToys

We ran the Z6 MLS gasket in our A6/Y8/Vitara/MiniMe project CRX, and had no problems until we overheated it. I'd caution against a composite head gasket, and suggest that you use ARP head studs when you pt it back together.

IMHO, a MLS Honda gasket will perform just as well as a Cometic, for this application and thickness.

Also, if you are running the A6 head, I'd stick with the factory gasket, or go a bit thicker to lower compression a bit. Just depends on how good of a tune you have on it. If you are running a Z6 or Y8 head, a thinner gasket is in order, depending on how much you decked it.

Hope that helps, and thanks for purchasing a set of our rods!

Craig

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CRXdan

not to threadjack but i too, have purchased your rods. thumbs up for offering an excellent product at a very competetive price!

Jwbetley

Thanks. So, a d16z6 OEM MLS gasket should work on a d16a6 wuth the stock a6 head? Do I need to get a 75.5mm head gasket or will the oem 75mm work? Im pretty sure it will but I'm asking to be safe. I am already running arp head studs. Thanks a ton; I'm excited to get my wagon running again.

97grnrs

ive run the composite hg on every single cam i built.. and thats alot , with no problems... just use arp studs if its blowing its cause of other reasons most likely.

Jwbetley

resurfaced head and decked block. I am using ARP's and torqued them down correctly. I am only leaking coolant through the cylinders. The composite HG was form a gasket set and I don't feel that it's a quality Honda OEM part. I am hoping that the problem is only the head gasket. Cracked sleeve would really suck.

luis253

bump to a six year old post!
what is the OEM thickness of a D16A6 Head Gasket?
I have resurfaced the head a couple times and had the block decked, so looking to compensate for the machine work with a thicker gasket.
and what were some web site that have custom thickness?

More Information for DNJ ENGINE COMPONENTS HS290

Muckman

iTrader: (2)

This will tell you the head gasket thickness - Honda D-Series Compression Calculator by ZealAutowerks
And Cometic makes thicker MLS head gaskets.

TravisBiggie

why would you spend extra money on a thicker headgasket? buy one on ebay for like 22$, MLS gasket only. Used one on my 500whp eg, and been using them on the multiple motors I've built without issue. Yeah it bumps up the compression with a milled head n decked block, but it doesn't hurt... if anything... its improve your MPG and power.

Muckman

iTrader: (2)

Why? A little thing called piston to head and piston to valve clearance. Just because you were fine doesn't mean everyone else is fine. You should measure to be sure.

Tippyman

Been using a Napa Z6 headgasket for about 6 years now. Hasn't blown yet! (And with proper tuning it shouldn't.)

luis253

HAHA^ dude knows what i am saying, have the head machined a couple times and the block decked once, need a little compensation for the missing metal!

why a thicker headgasket? #WEEKENDWARRIOR!

luis253

Sounds like you have been gasket stacking!

Dick Rounds

So just gt my first engine together with a vitra set up looking for head gasket info d16a6 on my 91si deck @.004. And bored .020 then resurfaced head @ .005 so how thick do I need n what is the HG.

highschooler

The Supertech Performance catalog lists the D16A as being a different part number for the head gasket than the D16Y and D16Z6. The Supertech one is 0.033” thick. The only ones I know of thicker than 0.033” are skunk2 and Cometic, but I’ve read about lots of problems with the Cometic. The Skunk2 is listed as a D16Y gasket. I wasn’t able to find any head gaskets in 75.5, only 76mm, which is ok for 75.5.
So that’s some info, but I can’t recommend any of them at this point.

Caoboy

He’s bored .020” over, .5mm is ~.020”.

highschooler

I couldn’t find any head gaskets 75.5mm, only over an extra .5 at 76mm, but I was told the 76mm gasket works fine on the 75.5mm bore ( .020” over).

NVturbo

stock size.... 75mm headgasket will work. Have that on my setup.