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Hks Gt-rs - Rb25det

justin911

By justin911,
in Engines & Forced Induction

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Beer Baron Grand Master

Beer Baron

Posted
Posted
Hey Abo Bob,

Thanks for your e-mail, i appreciate your input.

Just one question:

Between 2k-5krpm how much timing are you running?

You also mentioned an issue with porting, but the example you used related to an rb26. I personally would not touch the head of a 26, as they were engineered for race purposes, apart from port/manifold matching as stated. The rb25 on the other hand is totally different and i still believe gains are had from porting, provided it is done by a profesional porter.

I run stock R33 S1, rb25det, compession. (i think it is 8.5:1 or 9:1??????)

adam also runs an auto which may (or may not) affect dyno readings and spool up related to manuals (effect of torque converter vs no torque converter).

Roy Grand Master

Roy

Posted
Posted
Have you got head work too Bris?

..only when i was dropped in the hospital, and when i fell from the 3rd floor verandah...oh and the time when my brother hit me in the head with a 3 iron...:P

I wouldnt bother with headwork unless your head is off the car. New gaskets, plus the head reco to go along with the porting...too much money.

Al Grand Master

Al

Posted
Posted
Now I'm interested.

Al. Fark you and your bloody head porting. You too SK. I thought I'd been able to get the modification bug out of my system. Now I want head porting. You both suck. ;)

;) Couldn't stop laughing when i read this, GOLD. :angry::rofl:

DO IT!!! You know you want to..... :woot:

You saw my results with a shitty tune, imagine a tune like yours on my engine set-up, it would be awesome.

After porting the next step would be bolting up a GT-RS ;), GREAT response with equal power. :wave:

Bris is right though; If you remove your head it is best to reco it. The only thing mine needed (it was more a preventative measure) was valve stem seals, the set cost about $330.00.

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