Best Cam To Install With 2860-5 Garrets

[Mick_o]

Go with the -9's stock cams some cam gears & 1 of the above dumps mentioned by Piggaz a nice 3.5" exhaust and say hello to mid 300 territory mate. They start to pull hard just above 4000 & really put the speed on at 5000 all the way to the limiter.Forget about-7's response is pretty similar anyways but with MOAR

[cobrAA]

you could try to fix gtx2860 turbine with -5 housing.. seems like it will offer more response than the -5s somaybe closer to -9 while still making about 100whp more.

Honestly, I miss my -9s, I'M trying to find a combinaison that would yeild -9s response with -5s power.

Seems like the BW8374 could do the job but I havent seen much result yet.

Precision turbo just updated their 6266 ( or is it the 6466 ?) with the gen2 update, I guess it just a matter of times till they do it with the smaller size 6262.

- or the gtx update with -5 housing.

( just a thought since you havent picked your turbo yet) oh and I ran both the -9 and -5 with a pair of type-b and i believe they are worth it for that extra torque your gaining.

[R31Nismoid]

haven't got the -5 as yet just doing my research and from reading some forum threads it seems that the -7's come in earlier but really drop off at around 7000revs is this correct?

I like a high revving engine would get the -7 but would prefer to be changing gear closer to 8000revs ....

Thanks for the info Piggaz found them on green line your right not cheap but i will speak to my tuners and if they think there worth getting i will get them..

Most certainly they do. Firstly, forget -7s. You want -9s and you can make 320-340rwkk.

-7s and -9s both drop boost in upper RPM as they are only small turbos, they simply dont flow wild amounts of air. You look at the torque/TN graphs and they just die in the ass above 7000 so you are revving for nothing, better to shift a gear and get back into the meat. The reason is they tend to make no more than 16-18psi by 7500rpm if the motor is efficient. You can smash out 22-24psi through the mid range though so it's going wild by ~3500rpm torque wise through to about 6500rpm but you dont really 'feel' them falling over till 7000rpm and above.

Don't forget it's not just about RPM. The smaller -9 are coming on hard around 3300rpm-7000rpm vs a -5 which is 4000rpm-8000rpm. So your power range really is not altered, but people forget that and sometimes swap to -5s and go 'the car has so much more pull above 5000' which is just a case of they want a car that's going to pull to the limiter rather than shifting earlier to compliment the turbo setup being run.

Also the other factor is the transient response, in out of gears etc. I've had them both and I can tell you the -9s will come back up onto your 20psi faster than -5s if you are under around 4500-5000rpm. So you need to be giving it a gutfull everywhere with the -5s...

You should go in a car with -5s and -9s and see for yourself what it's like in/out of gears - For what you want 80km/h-150km/h stuff, which is what I did a LOT of in my R33 GT-R - You want the smaller ones.

And yeah, forget those f**king Tomei manifolds. Just get a set of cam gears, heavy duty actuators and a good flowing 3.5" exhaust. Spend the rest of the money on suspension/brakes and - do the FRONT and REAR diffs, for hillclimbs, you will never regret putting decent diffs in. The pull you will get is just unbelievable compared to how bad the factory stuff is (remember, 15+ yrs old).

[boobeedoobee]

Thanks everyone for the help. .

-9's it is! With cam gears, set of dumps and no Tomei manifolds..