Rb22 With 268Deg 9Mm Lift Cams In/ex

[Dave.TAS]

Hi, first post long time reader.

Have an rb22 on the way with camtech 268 9mm cams. Have run out of Money for the moment, need to daily the car soon. Have great condition rb25 turbo. You see the plan coming together right?

Don't care much for some fantastic dyno figure. Asking for peoples experience and thoughts on having these cams with a rb22 with a rb25 turbo. I know almost no one will have run this setup.

Share your thoughts on how it will drive, low, mid, top end.

[zebra]

Will drive shite. Over cammed for street duties and the R33 turbo will still only just make 200rwks, wil be ok from 4000 up but trying to drive around carparks or to the shops would be painfull.

That is my opinion, im sure others will say omg its got cams so its sick.

Have a look at the Kando T67 thread, for $1000 bucks they are impossible to beat. if its a streeter have a look at a TD06-20G-L2 and use an adaptor off the standard exhaust manifold or even use a cheapy ebay manifold until you can afford a good one.

But yeah, I wouldnt even bother with a standard turbo.

[Rolls]

it'll have nothing down low and the top end will be completely killed by the turbo, so you lose out in both ends, a stock motor will drive better.

sorry to say but it is a bad combination.

[joeyjoejoejuniorshabadoo]

+1 bad idea

[bcozican]

+ 2 bad idea

i have rb22 with HKS 264 in/ex cams and pretty big turbo and its only used for track duties... I wouldnt even have cams in a sub 350rwhp rb20

it will drive terrible with the shift of the curve the turbo will already be running outta its range

[STATUS]

Hi, first post long time reader.

Have an rb22 on the way with camtech 268 9mm cams. Have run out of Money for the moment, need to daily the car soon. Have great condition rb25 turbo. You see the plan coming together right?

Don't care much for some fantastic dyno figure. Asking for peoples experience and thoughts on having these cams with a rb22 with a rb25 turbo. I know almost no one will have run this setup.

Share your thoughts on how it will drive, low, mid, top end.

will be fine, i fitted the same cams to a R33 without VCT (see my sponsor thread http://www.skylinesaustralia.com/forums/topic/308743-rb20-rb26-and-rb26-camshafts-850-pair/)and lost nothing, car now has a highflow and makes great power but with the std turbo it made 206rwkw on 12.5 or 13 psi. Given the rb22 is smaller but the turbo is also uber small so it should work out fine.

You will need to get aggressive with the intake cam, i think i was around 10-14 degrees advanced from memory on the vct engine so dont be scared to advance it up..

i had a rb22 in last friday similar setup but with gt3071 and it was sweet.

[Dave.TAS]

Thanks trent! You supplied the cams to justin "stockers" I believe, but ive bought his engine and like I said ran out of money so will just be putting the rb25 turbo on.

Look forward to any further feedback or thoughts. My daily at moment is a ca18de 10.5:1 with his 264 8.5s, so im used to a fluffy doughy bottom end. Does get better up top but yeh not much haha

[AD4M]

will be fine, i fitted the same cams to a R33 without VCT (see my sponsor thread http://www.skylinesaustralia.com/forums/topic/308743-rb20-rb26-and-rb26-camshafts-850-pair/)and lost nothing, car now has a highflow and makes great power but with the std turbo it made 206rwkw on 12.5 or 13 psi. Given the rb22 is smaller but the turbo is also uber small so it should work out fine.

You will need to get aggressive with the intake cam, i think i was around 10-14 degrees advanced from memory on the vct engine so dont be scared to advance it up..

fitting a non vct cam into 25's require 10+ degres advance dialed in to get it to tdc I beleive?

agree with your advice they will work fine for the time being on a stock turbo

this is a back to back comparison AMS did on an evo showing how nice the kelford/camtechs match to stock

http://highboostforum.com/forum/showthread.php/24193-Ams-evo-cam-test-5-6-08

[Rolls]

will be fine, i fitted the same cams to a R33 without VCT (see my sponsor thread http://www.skylinesa...hafts-850-pair/)and lost nothing, car now has a highflow and makes great power but with the std turbo it made 206rwkw on 12.5 or 13 psi. Given the rb22 is smaller but the turbo is also uber small so it should work out fine.

You will need to get aggressive with the intake cam, i think i was around 10-14 degrees advanced from memory on the vct engine so dont be scared to advance it up..

if you have to adjust the cam timing that much doesn't that defeat the purpose of having those cams in the first place? eg advancing the intake cam decreases the overlap which is exactly what getting the bigger cam did in the first place? Or am I wrong.

never understood the point in buying cams then adjusting them with cam gears, why not just get a suitable cam in the first place.

Edited December 21, 2010 by Rolls

[AD4M]

if you have to adjust the cam timing that much doesn't that defeat the purpose of having those cams in the first place? eg advancing the intake cam decreases the overlap which is exactly what getting the bigger cam did in the first place? Or am I wrong.

never understood the point in buying cams then adjusting them with cam gears, why not just get a suitable cam in the first place.

goes back to what I posted, taking the rb25 vct cam out and fitting a non vct cam in its place (usualy to suit rb20's) you have to dial it in 10 degres or more advanced to bring it into top dead centre.

[DVS JEZ]

if you have to adjust the cam timing that much doesn't that defeat the purpose of having those cams in the first place? eg advancing the intake cam decreases the overlap which is exactly what getting the bigger cam did in the first place? Or am I wrong.

never understood the point in buying cams then adjusting them with cam gears, why not just get a suitable cam in the first place.

I agree in a way, but if he has the cams due to not knowing which were best for him then the cheapest alternative is to reduce the overlap at low rpm to help get VE back up

[Rolls]

goes back to what I posted, taking the rb25 vct cam out and fitting a non vct cam in its place (usualy to suit rb20's) you have to dial it in 10 degres or more advanced to bring it into top dead centre.

ah ok, I thought he was adjusting it 10degrees from when it was already in the correct position.