Hi there guy's can anyone recommend whether I need to put and oil restrictor in my HX40 and H1E oil lines? I looked inside the housing and it looks like they may have restricted the flow internally but I am not sure. Please can someone confirm and if so what size I should use?
If I didn't restrict the flow what would happen? Loose oil pressure and or flow in the rest of the engine?

Thank you
Lee

 

Mine smoked a bit initially, so I made a .060 restrictor and put it in, no more smoking!

 

yep .065 for me no smoke. i learned the hard way though

 

thank you very much chaps! That's pretty small.. I was expecting 2-3mm. that's like 1.6m!

Lee

 

Guy's have either of you measure the oil flow through your holset to check what it is? Holset apparently recommend 2litre/min at idle. Also what size oil drain fittings have you got? It is apparently recommended 19mm ID (3/4") that's pretty dam big and I guess too small a drain would essentially cause the turbo to back up with oil?

Let me know
Lee

 

I'm running -10, so 5/8.. maybe why the restrictor was necessary

 

I am running a -10an drain line with a .080 restrictor on my H1E.

 

Where'd everyone get their restrictors and what's the thread pitch or w/e?

Same for the oil drain part...where'd you all get yours?

http://www.atpturbo.com/Merchant2/merchant.mvc

Was looking around here, but need to know what would fit my HX40

 

How did you make your own? what did you use and how did you drill it to 0.60? Im just wondering because idk waht oil restrictor i got for my hx35w and i would like to have the right one

 

Just had a thought on the oil drain side.. Surely the drain hole into the block of the FD3 is only 1/2" anway. maybe 9/16" best case.. Did you uy's open up the hole or have you retained a stock size fittng on the bock? Woul dbe good to see a pc if anyone has one handy.

Cheers
Lee

 

I drilled out and tapped the AN adapter in the lathe and threaded in a webber carb jet which either I found a .060, or drilled out a blank one.



I left the oil return stock. I hacked up the stock flange and welded some 1/2" tubing and the -10 fitting on..

 

That was pretty much my plan on the drain pipe too!

 

i welded up an AN adapter and then drilled the hole. works great

 

what size drill bit did you use?

 

I was thinking of doing the same if my restrictors I made won't stay put!

 

My HKS T04r has a 1.6mm hole drilled in the pill it and that seem to do the biz, it was just a guess too!!!!

 

Anyone know where I can buy a restrictor like the one I posted?

 

And to add to the current Holset questions....what the hell is the thread pattern and pitch for the oil inlet???

HX40 here

 

ttt

 

Hey man,
I can't answer the question directly but I took mine to a local hydraulic fittings shop and they picked something out.. I have a feeling it's a plain metric thread off the top of my head M10? Measure the OD and get a metric bolt to try. Might be M12?

Good luck
Lee

 

i believe, and dont hold me to this, its M12x1.5.

 

Bumping this up, I am throwing my WH1E in this week and cant find a pipe thread fitting that matched the feed thread size, no npt fittings mate up. Im also looking to find a restrictor like posted above, ideas?

 

Just found the perfect fitting with restrictor built in, used for a volvo. m12x1.5 to -4an with 1.5mm restriction.

 

Good find there buddy,
Have you go a part number for it? Is it a Holset part? I made mine using adaptors and a threaded insert so I can unscew my restrictor and change it if need be as I could find no definite size for it.. I ended up going with 1.5mm after trying 2mm and getting smoke! Been perfect since.

What's the rest of your setup? Interested to hear how it goes.. I have currently just run in after a rebuild and mapped at about 10psi wastegate pressure I am getting 305bhp at the hubs. Next plan is to push the boost up a bit!

 

^just get a metric AN adapter have the end welded up and then drill your hole. Since i have posted last ive opened mine up a bit because of discoloration on the turbine shaft. Cant remember the size bit I used but the hole is around 2-3mm.