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Rb20det Gaskets - Oem Vs Cometic

AlphaWolf32

By AlphaWolf32,
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AlphaWolf32 Explorer

AlphaWolf32

Posted
Posted
  • Car : Skyline R32 GTS-4 4-Door

So an exhaust leak has appeared in my rb20det, to be honest unsure whether it's the exhaust manifold gasket (half are studs and half are bolts :?) or turbo outlet gasket (only sporting 3 out of the 6 bolts and studs.
So im planning to replace all the gasket around the turbo and exhaust mani at the same time.

So I'm swinging between either buying a few Cometic gaskets to cover my needs???
or buying a full complete OEM gasket kit (I know I don't need them all but its just as cheap)???

This car has been getting built for a few years now, so I do plan to get some power into her.
I already have a cometic triple layer steel head gasket and arp head bolts.
Basically my question is, if I plan to run say about 18-20+ pound of boost in the near future, which gaskets would hold the boost more efficiently and more safely? 'Cometic or OEM'??

I have done a Google Search and what not, but didn't really get the info I needed. :P

Thanks people :D

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Jordy32 Experienced

Jordy32

Posted
Posted

Either are fine really, Genuine OEM is my preference, but people have their opinions on both, generally cost based arguments..

More importantly than gasket choice would be replacing all of the bolts and nuts with proper studs nuts and locking tabs.

stealthfoz Enthusiast

stealthfoz

Posted
Posted

just go to bursons and get a standard exhaust manifold gasket and t3 turbo gasket. they normally sell permaseal ones which are good quality.

but since you are missing bolts id be checking how flat the manifold is now, it may need a machine or you will keep blowing gaskets

AlphaWolf32 Explorer

AlphaWolf32

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  • Author
Posted

Either are fine really, Genuine OEM is my preference, but people have their opinions on both, generally cost based arguments..

More importantly than gasket choice would be replacing all of the bolts and nuts with proper studs nuts and locking tabs.

Hmmm I see, so regarding high boost they are both on the same standard roughly? I just don't want to get an OEM gasket then have it start leaking again when I ramp up the boost.

That's definitely planned, every stud, bolt and nut will be getting replaced for the exhaust side :)

just go to bursons and get a standard exhaust manifold gasket and t3 turbo gasket. they normally sell permaseal ones which are good quality.

but since you are missing bolts id be checking how flat the manifold is now, it may need a machine or you will keep blowing gaskets

Not too keen on the permaseal, from what I've read their quality is not as good as OEM.

Yeah I will be getting a set of OEM exhaust mani studs at the same time and the rest of the studs and bolts/nuts anndddd a machining if need be... :P

AlphaWolf32 Explorer

AlphaWolf32

Posted
  • Author
Posted

I run 18psi through my nsisan OEM gaskets with no issues so far, all replaced new with new bolts nuts and torqued to spec

Take from that whatever you want :)

That's awesome to hear, thats how much boost I plan to run down the track, hopefully not too far ahaha.....

How long have you been running that setup?

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