oil feed restrictor size

[jono]

I spoke to Garrett about whether i need an oil restrictor for my turbo (HKS 2540) and got two answers.

when i first rang up to identify the turbo they said if oil pressure is over 60psi then i would need one.

its a journal bearing turbo but my motor (4age 100kw) will put out +60psi when revving.

i bought a restrictor from motorsport connections but its only 1mm.

Then I rang Garrett back to ask what size i should drill it out to and then they said that i didn't need one.

I'm pretty sure i do because if i drive it hard oil will leak out the seal and start burning on the housing.


So i guess my question is; what size do i drill out this restrictor to?

[SeptemberSquall]

whatever size is required to ensure oil pressure is not >60psi at max load/pressure?

[Cuzzo]

You could try ringing GCG turbos.

http://www.gcg.com.au/

or even email them.

I found them helpful when i dealt with them

[30psi 4agte]

its not a rear oil seal that is your problem here is it? -- you have had problems with oil leaking in the past?


When i bought my 3540 it came with a restrictor that sits in the core. It just slips in where the screw in supply fitting goes.

[jono]

i think its the front seal.

[wilbo666]

http://www.toymods.net/forums/showthread.php?t=20467

http://www.toymods.net/forums/showthread.php?t=22498

Some good stuff...

For example a bush bearing turbo requires approx 2.5l per min and a BB turbo doesnt need as much requiring 1-1.5 L per min.

The way to check your oil flow capability is to pull off the line before the turbo and place the line into a measuring flask of some sort. Then start the car and run for 15 sec. Measure the amount of oil pumped out and times it by 4 to get the amount per min.

Cheers
Wilbo

[30psi 4agte]

ha ha ha..... + rep

When i saw this thread
I thought to myself hmmmmmm......... i used to know what the flow rates were !! because i worked it out when i switched turbos ( bush to roller )
I forgot i had posted it on here..

Now aint that somethin.

[Jackel]

go there
http://img369.imageshack.us/img369/3...lsupplynw4.jpg