Leeroy_25

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

2a+RoN

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

catch-22

iTrader: (2)

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

Leeroy_25

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

Lee

Leeroy_25

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

2a+RoN

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

moremazda

iTrader: (4)

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

SmogSUX

iTrader: (12)

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

just startn

iTrader: (33)

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

Leeroy_25

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

2a+RoN

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..

Leeroy_25

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

catch-22

iTrader: (2)

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

just startn

iTrader: (33)

what size drill bit did you use?

Leeroy_25

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

TheWoganSleeve

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!!!!

SmogSUX

iTrader: (12)

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

SmogSUX

iTrader: (12)

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

HX40 here

SmogSUX

iTrader: (12)

ttt

Leeroy_25

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

catch-22

iTrader: (2)

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

imdrax

iTrader: (1)

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?

imdrax

iTrader: (1)

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

Leeroy_25

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!

catch-22

iTrader: (2)

^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.