How Much Does Hi Flow Cost?

[aquariuz6]

hi just a quick question

how much would it cost me to hi flow my stock rb25 turbo on my r33 gts25t?

can they be done in sydney?

do prices vary?

[paulr33]

gcg in sydney can do it

1300 odd for plain bearing im pretty sure

and 2000 for ball bearing

[aquariuz6]

whats the difference between plain bearing and ball bearing?

how long will the turbo last for if plain bearing?

[Craved]

( edited cos i was wrong )

ball bearing turbos are reported to have better spool times, but might require a oil restrictor to limit the turbos oil flow.

same life span for each if oil and cooling is maintained.

Edited March 30, 2006 by Craved

[Sydneykid]

Standard turbo on RB20/25 is ball bearing and water cooled

(so they have oil flow restrictor standard)

GCG Ball Bearing High Flow is $1750 (PM me for details)

Plain bearing high flow is around $1300, no water cooling, the oil does both the cooling and the lubricating

Ball bearing turbos give faster spooling and longer service life, plus transmit less heat into the oil.

Personally I would never use a plain bearing turbo on any of my engines, the maintenance factor alone makes it a simple choice.

cheers

Edited March 30, 2006 by Sydneykid

[BezerkR32]

Guy i use, Turbologic in Wollongong does water cooled bush bearing unit for $1350, have used it on several customer cars with good results. The GCG ballbearing unit also looks very good also but with a little more expence. If money is no problem, Sydeny Kid is right, go the (BB).

Edited March 30, 2006 by Bezerkly

[JaFF]

is there much power difference between the BB and plain?

If you didn't plan on doing much track work, like maybe once or twice a year, but wanted a quickish street car would a plain be suitbale?

My car for instance hasn't been on the track once while I've had it. Most of it's driving is in the below 4500rpm range with the occasional squirt up to 100 in second.

Would the BB really benefit me much seeings any turbo is going to have a pretty easy life with me?

Cheers,

James

[Sydneykid]

is there much power difference between the BB and plain?

If you didn't plan on doing much track work, like maybe once or twice a year, but wanted a quickish street car would a plain be suitbale?

My car for instance hasn't been on the track once while I've had it. Most of it's driving is in the below 4500rpm range with the occasional squirt up to 100 in second.

Would the BB really benefit me much seeings any turbo is going to have a pretty easy life with me?

Cheers,

James

Hi James, max power probably not much different, average power quite a bit different, based on my experience. The standard turbo is ball bearing and water cooled, Nissan thought it necessary to specify it that way. They could have saved millions by specifying a plain bearing turbo, so they obviously thought it was a good idea.

Turbos never have an “easy life”, they are cooked by 750 degree exhaust at one end, have ambient air ingested at the other end and get 79 psi of oil pressure squirted into them, hot or cold. I would never consider that their life is in any way easy.

cheers

[JaFF]

ok, compared to someone who tracks thier car a lot mine would have an easy life

Thanks for the reply though. It would probably be worth saving for the BB due to the average power gains. Average power is more important to me definately due to the driving I do. The more power I can get down low the better

Cheers