RB26 Cam Question

[cobrAA]

i know HKS made about 574hp and 629Nm torque out of the GT-SS with light overbore pistons and 264° Cams so should i better go with JUN 264° IN/EX 9.15 lift cam's or 260° IN/EX 9.15 lift cams from Tomei with stock bore?

Isn't Mine's who did that?

[FLYSKY]

mine's did a 630hp car with GT2530 Turbo's

this was from HKS

[GTR-Dad]

Here's a chance to compare a -5 dyno curve....


Dan

[cobrAA]

I'm lovin this thread lol!

[GTRADDICT]

How often do you punch it at 2000 RPM? Most people downshift and the boost it almost instantly on for almost all the turbos... Well not the T88 and such. In there case you have to down shift again hehe.

[FLYSKY]

How often do you punch it at 2000 RPM?

in the City much more often than elsewhere.

[cobrAA]

How often do you punch it at 2000 RPM? Most people downshift and the boost it almost instantly on for almost all the turbos... Well not the T88 and such. In there case you have to down shift again hehe.

downshift or not, I can REALLY feel a difference between gtss and -5. I felt both and yes the setup is pretty much the same except the turbos.

Even tho, you hit boost, with gtss you will be at 13psi at 3000 while the -5 might start boosting at 3-5psi.

[GTR-Dad]

No doubt the -7 or GT-SS will spool earlier. Neither will spool as early as the OEM squirrels on my 335i and there's STILL a delay from when I 'punch it' and when my seat backs start to earn their keep.

If you want instant torque, you want a naturally aspirated engine. If you want a more flexible, tunable, scalable platform then forced induction is for you.

-7? -5? Both will be fun, but in different ways. Don't just think about it.... DO IT!

Dan

[FLYSKY]

Cams will be bought on monday, first i wanted to go with JUN 264 cams with the GT-SS Kit but adam gots pretty nice Tomei 260° Poncams in stock so i couldnt resist hehe, so still needs my injectors and fuel pressure regulator and than my ecu can be mapped.

what do u guys think how much hp/torque i will get out of the RB26 with GT-SS Kit, 1.2 - 1.4bar pressure, 260° Tomei Toncams (9.15mm lift IN/EX) and 550/555cc injectors?