quick head question

[justin s]

i got my rb20 head in the maching shop and im gonna have them mill the exhaust ports out a little bigger.. i dont wanna go 2 big cause im gonna use the stock manifold . i just want the turbo 2 spool a little faster

i aint goin got big hp, just quick spool

[TJcars2]

You didn't really ask a question but don't mill them out. Just have them gasket matched.

[ST240]

I don't think you'll make a measurable difference by porting the exhaust with stock gear.

[justin s]

ok yeah thx... so i looked into it a little. n id have 2 find a bigger gasket 2 match it huh. and then if i get a thicker on it would throw off my timing right? id have 2 get adjustable cam gears..

if i do go with it , anyone know where i could get bigger rb20 head gaskets from

[justin s]

it seems like a big pain in the a**, the motor only has about 60k miles so i dont think the heads gonna be warped at all.. im gonna have 2 check into it more.. can some one give me some links where i can read up on this more

[justin s]

will tha rb26 intake manifold fit the rb20?

[Cjmartz2k]

You need to search a lot more and quit typing like that. Use English.


-don't open the ports
-don't put a thicker headgasket on it
-why did you take the head off the motor in the first place?
-no, the RB26 instake won't fit

[justin s]

You need to search a lot more and quit typing like that. Use English.


-don't open the ports
-don't put a thicker headgasket on it
-why did you take the head off the motor in the first place?
-no, the RB26 instake won't fit

sorry i was trying to get a question up here fast,
and i was thinking if i got a exhaust gasket with bigger exhaust ports then it would be weaker so i would have to go thicker.
i took the head off cause i had one stubber exhaust studd i couldent pull... i had 3 break and i couldent pull one. and im getting it cleaned and checked.
thx for the help with the intake..

i know these are dumb question, but ive always been told theres no such thing as a dumb question. theres always someone to answer them.. thanks for the advise

this is my first nissan, first turbo car prodject so im gonna have alot of questions ..

[Cjmartz2k]

I'm a grumpy a** hole in the mornings, don't pay me much mind (it was 6am local time for me when I posted )

I thought you were talking about a thicker head gasket before, but the same thing still applies. As long as the head/manifold are flat and clean, you'll have no sealing problems. I wouldn't open the ports up, but port matching them should be easy enough and helpful. Just be aware, many people like to keep the ports in the head a bit smaller than the manifold to help fight exhaust gas reversion. I'm not sure how exactly that applies in turbo applications though.

[ST240]

Do some searching meng. Stay up till 3am reading on this forum every night. Just when you think you're sick of reading about RBs, read some more. Hell I know I did. Theres TONS of info to be had out there.

[justin s]

thanks guys