Kkr480 And Standard Wastegate Actuator? + Questions

[ShayneJ]

I was wondering if its possible to use a standard rb25 turbo actuator on a KKR480 HP turbo. I am after a bit less boost as the turbos are known to spike a bit. I have in there a 13psi spring rate and it will see 16+ sometimes which not so good. May be a factor to bearing may not. Anyways, like i said want to run a bit less boost so the spiking issue wont be so "in your face".

Or would you reccomend putting a standard turbo on there and upping the boost to say 15psi to make around 200rwkw? With current turbo setup I am making 240rwkw on 13psi but the power delivery is harsh to say the least. Seeing usable boost around 4500 mark, give or take a bit... and then hitting (not so much now that i got used it) like a head on with a semi.

I am after something that will be reliable, streetable with some power. I can't afford a new turbo so that it is out of the question til the funds situation is in my favour.

So back to the previous question... Will standard rb25 actuator fit KKR480 turbo and will this lower "standard" boost back down to 7psi?

Cheers for reading.

[paulr33]

the std turbo will be on at 2800rpm and will make 200rwkw at 12psi

[ShayneJ]

Oh ok... Whats the limit again for boost on a standard turbo?

the std turbo will be on at 2800rpm and will make 200rwkw at 12psi

[l0WRB]

Im pretty sure the stock actuator wont fit the KKR480 turbo (im using kkr480)

Ive even got otomoto to send me a 7psi actuator and bolted it on and im still boosting to 19psi (running like this for 12months)

I think most guys have to get the housing wastegate flap ported out, or weld it up and run external gate?

hope this helps.

Edited April 27, 2008 by l0WRB