Turbo woes averted Options

[natedogg]

As some of you know, I've been having trouble with my BR500 burning oil (A LOT of oil) due to blow-by past the turbine side oil seal. I originally thought that it was crappy design causing the seal to fail, but I thought I'd investigate a little further.

I finally found a thread on tooners that confirms I am not the only one with this problem:

http://www.dsmtuners.com/forums/showthread...light=pte+turbo

In a nut shell, it was discovered that the pte designed turbos (same as BR series turbos) don't like the high oil pressure that 4g63's with no balance shafts produce esp. when the oil is fed from the filter housing rather than the head. Oil pressure that can be in excess of 110 psi at high RPM. The solution to this problem is introducing a restrictor orifice in the feed line to decrease oil pressure before the turbo.

I purchased this restrictor from Winner's Circle and drilled it out with a 5/64" drill bit as suggested in the thread. Since I use -4AN line to feed the turbo this reduces my oil pressure to the chra into the neighborhood of 55 to 60 psi at high RPM WOT instead of 100 to 110 psi. This has effectively reduced my smoking to a slight puff out the tailpipe rather than a huge cloud.

Needless to say, I am pleased, and recommend this to anyone who is having trouble with their PTE designed turbo burning oil. Keep in mind that BR, AMS, and SBR all sell the PTE designed turbos under different names.

[natedogg]

I think I'm going to keep the vac pump on there. It will keep my overall oil pressure down, which solved my problem of blowing oil filter gaskets. It can't hurt and it actually helps the rings seal and causes there to be less backpressure against the pistons especially at high RPM.