Holset Guru's (justin?) check my oil feed and tell me what you think

[turboglenn]

here's the oil feed i came up with for my holset.

You can see in the pics what side goes to what component, at each end there is a fitting (for OFH and CHRA) that are machined/tapped to accept a banjo bolt with -4 (or -3 swappable) fittings

the smallest hole in any fitting on this setup is .123"

My concern is some where I read not to feed a holset from a banjo bolt, but i can't find annything else to support it now that i'm looking for it.. any facts onthat would be nice (facts though )


Also, on the turbo and OFH ends my other option is to cut and tap the fittings for 1/8th NPT and put a 90* block to feed the oil to the side andnot straigt out of the OFH towards the ground, or up into the header at the CHRA and come 1/8NPT to -4 fitting out of that type of fitting instead of a banjo bolt)

I can measure pressure at the line via a -4 male female fitting with a tap in the middle for a gauge, so if it's too high i can step down to a -3AN line with a smallest diameter of .090" (or use a restricted banjo bolt i already made on the -4)

please, let me knowif you'd think this will do fine for the oil feed, this was the last part to get in order and now i can install my holset when i have time (should only take an afternoon/evening tops)

 

[JusMX141]

As long as your oil pressure isn't out of control, this should be 100% fine.

This gets my vote for "best use of a clutch slave cylinder banjo fitting".

 

[knochgoon24]

If the thing about the banjo bolt is true, I'd like to know too. I had plans to use one.

 

[turboglenn]

This gets my vote for "best use of a clutch slave cylinder banjo fitting".

Who's showin their age (or time spent under a DSM) now? (and i apreciate the vote ) , you should see some of the places on my car and bike you can find that exact fitting


EDIT: here's ONE REQUIRED USING THEM (oops) from a caliper change that went from top mount to side mount inlets

 

[bastarddsm]

I don't see any reason why the banjo bolts won't work, provided the holes in them are plenty big. Which I believer they are.

Also, you need to hook your gauge up as close to the turbo as possible. I noticed a 10psi difference between checking it right at the turbo vs checking it at the beginning of the feed line. That means the hose in its self is a restriction! That also means if you put a restrictor in, its position is critical, because it will be more of a restriction if its before the hose.

 

[turboglenn]

There will be no restrictors right away, my gauge fitting is just like one used in an install pics from here that they got from summit, and i could put it right at the turbo or just account for the psi differece. ( the post on here I'm talking about is the same stuff found on the Clint's garage blog)

Guess I'll shoot for the install soon then (got restrictors available if needed so i think i'm good unless i need a bigger drain, but i guess I could rush it if needed) Just wish i had an extra 90* cast elbow just in case i had to go back to the to4e for some reason. I'll build the ball bearing 50 trim when the holset goes on. I'm just praying it spools up faster than the results forcefed saw on his garret housing'd holset. If not i may go mad and build a true TS manifold from sch-40 els and find a small holset TS 12cm^2 housing to run I'll probably make the pressure gauge for the turbo permanent if mounted at the housing since my EGT went bad and i need to fill that slot

Here's the color the housing is going, I'm a little antsy, already puff canned it tonight, but saved enough paint to touch it up after i weld the elbow on (at least i didn't clear it yet )