Hks Gt-rs - Rb25det

[Bass Junky]

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.

[Abo Bob]

I wouldn't do it without a turbo upgrade Bass.

[Bass Junky]

yeah, but still.

Sounds sexy.

"I've just had a full head job done."

[Roy]

..forget how it sounds Pete, you need the power

I know a guy with an RB25, A/M turbo, cams etc running slicks and is only 0.05 seconds quicker then my Rb20 over the qtr and i run street tyres...he needs headwork

[Bass Junky]

Have you got head work too Bris?

[Beer Baron]

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]

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...

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]

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.

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

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.

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.