hx35 oil line questions

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Apr 9, 2012 | 08:27 AM

#16

dacowgod

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From: Morgantown, WV

Quote:

Originally Posted by ba109296

Your best bet is to NOT just go with what someone else has done and actually see what your pressure is first.

Get a good aftermarket gauge in line with your turbo and rev the car real fast to red line. See what your oil pressure is at that point. If its over I think its 80 or so its TOO HIGH. Put a restrictor in there. If your pressure is under that then you are ok. Try different combinations before you go do some driving.

This is the ONLY fool proof way to run your holset correctly without having it blow up prematurely.

This guy has it correct..

I'm a Holset junkie and have ran them on my DSMs for a long time now... Holsets are the most forgiving to oil pressure that I've found... but you still have to treat them with respect..

On DSMs with L19s(slightly bigger diameter than the stock head bolts) and some head machining done w/o finessing the head's oiling port .. I've seen oil pressure at the head never go above 25-30 psi .. This is not enough for a turbo running 40 psi at 9000 RPM ...... If balance shafts are removed though Oil pressure at the OFH can be through the roof if the OFH hasn't been properly ported... Best bet is measure.. but in most cases on a car w/ balance shafts right off the OFH is suffice..and without balance shafts you will want a restrictor..

Also .. the holset feed lines that thread in (not the flange) are meant to use an o-ring to seal but almost always come with a crush washer instead and always leak... just something to keep in mind...A good VITON o-ring should seal it up and not melt.

If you're savvy you can also tear the cartridge down and tap the feed for 1/4 NPT ... then you can snag a fitting at the hardware store for 3 bucks and the tapered threads will seal right up w/o any of the leaking that they are prone to..