stock head gasket thickness?
Posted: Fri Apr 04, 2008 9:43 am
just wondering what the stock head gasket thickness is? and if I was to change it to a 0.8mm one would the compression ratio go to in a nb8a 9.5comp motor?
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stock head gasket thickness?
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Posted: Fri Apr 04, 2008 4:55 pm
won't make a bees fart in a cyclone difference to your compression ratio.
Posted: Fri Apr 04, 2008 4:58 pm
won't make a bees fart in a cyclone difference to your compression ratio.
Depends how many are in there now
Re:
Posted: Fri Apr 04, 2008 5:04 pm
mazlot wrote:won't make a bees fart in a cyclone difference to your compression ratio.
Depends how many are in there now
true.......we once tried decompressing a holden 6 we'd turboed by using 3 repco gaskets.........that ended in spectacular fashion..........LOL
Posted: Fri Apr 04, 2008 5:05 pm
how large is the bee and how small is the cyclone?
[sorry, I'm bored again]
[sorry, I'm bored again]
Re:
Posted: Fri Apr 04, 2008 5:07 pm
1red5 wrote:how large is the bee and how small is the cyclone?
[sorry, I'm bored again]
you go & check your tax bill again
Posted: Tue Apr 08, 2008 7:44 am
the mazda factory gasket i was given (got from mazda spares) looks like its about 1mm thick. so your only going .02 of a mm which is .00078\" i hear a 0.020\" head shave makes a .5 comp increase so yeah.. not going to be huge gains. ill get a Micrometer from work and measure the standard one properly tonight if i remember.
cheers
cheers
Posted: Tue Apr 08, 2008 9:40 am
thanks mate - was only wanting to bring it up to 10:1 anyway.
Posted: Thu Apr 10, 2008 11:54 pm
It's popular to lower comp through using decompression plates and or thick gaslets, but I've never heard of trying a thin gasket to increase comp.
I'd be a bit owrried about the quality of seal in a gasket thin enough to make a difference.
I'd be a bit owrried about the quality of seal in a gasket thin enough to make a difference.
Posted: Fri Apr 11, 2008 9:55 am
its toda part so i'm not worried about quality. doing it to get a bit more power from a supercharged application. I have not decided to do it yet but just checking out the details.
Posted: Fri Apr 11, 2008 4:35 pm
Why not turf the gasket all together and get the head and block O ringed?
You can then run high boost and not worry about blowing head gaskets.
In my nefarious youth, I had a turbocharged Commodore that kept blowing head gaskets because I wanted to run high boost (21 lbs), and not so low compression.
Got the head and block O ringed, and never had a problem with it ever again.
Mind you, my transmission expert and me were unable to make any Turbo-Hydramatic 400 box last more than a few months, but that's another story.
You can then run high boost and not worry about blowing head gaskets.
In my nefarious youth, I had a turbocharged Commodore that kept blowing head gaskets because I wanted to run high boost (21 lbs), and not so low compression.
Got the head and block O ringed, and never had a problem with it ever again.
Mind you, my transmission expert and me were unable to make any Turbo-Hydramatic 400 box last more than a few months, but that's another story.
Posted: Fri Apr 11, 2008 4:39 pm
what do you think that would be worth? also how much clearance is there with the valves?
Posted: Fri Apr 11, 2008 4:48 pm
wouldn't that be a problem because of alloy head and iron block?