TheShodan

iTrader: (14)

The Holset world is different. Period. The restrictor/no restrictor argument applies to ALL turbochargers. OIL PRESSURE MUST BE KNOWN FIRST.

Straight -12AN. No "step". You can tap from the same place as the other turbochargers. Unlike the DSM world, you don't have multiple choices. Either from oil sending unit or a sandwich plate at the oil filter. that's it.

jalenda9

Well I found a holder h1c service manual in the pdf format and it had two different thread pitches listed under oil inlet options. One was m12x1.5 and the other was m14x1.5 which I've never heard of on any holsets so it could be a missing link. Basically my I bought just a brass fitting from Lowe's last night it was a 3/8 to 1/4 basically it didn't fit but not because of the threads..it was flared and the threads were to far up on the fitting to catch in the inlet hole. But I compared the thread pitch with the Orange dust screw that came in the hole and the threads look identical...like the spacing in between each thread. So it could possibly be a 3/8 fitting but I need it to reduce to -4an which I heard isn't available but can be made. So I ordered two fittings last night. One being m14x1.5 -4an and a m16x1.5 -4an I thought the m12 looked a bit small so I bought the larger first. I will take some pictures of the plastic orange screw cap and the 3/8 fitting to show you guys what they look like in comparison.

jalenda9

Here are the two fittings I purchased last night

M16


M12

TheShodan

iTrader: (14)

The Bad News

That inlet fitting for oil might be a problem from what you bought. M16 is the metric, but if you could clear up what you mean by

It suggests that it might be a BSPT (British) fitting in which the one you bought from Kinugawa won't fit at all. You may have to use 1/4NPT to -4AN fitting, in order for it to work, similar to the Borg-Warners. Check that Holset thread to see.

The Good news

The water fitting is the same size as the standard Garrett GT water fitting, except it goes to a -6AN male. (which is easier to integrate as -4AN for turbos is typically a hardline.

So, now you know. water fittings, same as a Garrett GT.

jalenda9

I meant it in the sense that I bought a cheap brass fitting( probably for plumbing) and it had a inverted flare on the side I thought would have threaded into the inlet but it butted against the flared portion in the inlet hole and the threads wouldn't touch. ill post pictures of what I mean by the plastic cap and the brass fitting threads being similar. also, as far as the fittings I ordered go, neither will work for it? haha that sucks but what ya gonna do? I should of researched and did some more reading first, but I appreciate you helping me through this.


Pics. The inlet


The comparison of the cap and the brass fitting I bought


At least they look similar to me haha. But here's a picture of it on my block and do you think I wouldn't keep traction with the 9cm housing because how hard boost might hit? I don't know if I'm better off with the 12cm or what I won't be taking the car past redline since the heads going to be stock aside from arp head studs.

jalenda9

also I'm going to screen capture in where in the holset h1c manual it says oil inlet options. they both are metric so I'm not sure

TheShodan

iTrader: (14)

Traction will be on you and your ability to control the car. The negatives of the 12cm^2 outweigh any benefits you think you may have more "traction". That's on then tune, your boost controller, your brain and your foot.

Stop overthinking. Use the 9cm^2 and come to peace with it.

As for the fittings. see if you can use a METRIC TAP SET to compare the fittings and cap you have. Then you'll be sure of it. Good luck.

jalenda9

Okay that's what I will do then. Thanks man

jalenda9

So I got one of the 3 fittings I bought this one is the m16x1.5. It fits good not fully flushed but it's screws right in nice and snug. The only thing is that the oiling hole in the fitting is a little bit smaller than the hole in the inlet:




And can I run a wastegate dumptube like this? Probably not but input would be nice.


I have the other section that actually runs down but it doesn't clear the turbine housing. I have the 18cm housing but I ordered a 9cm so hopefully it fits. Will that fitting work or should I try porting that hole to be wide enough to match the oil inlet of the turbo

jalenda9

Any ideas on if this fitting will work?

NotARaCist

iTrader: (1)

That dump tube is literally aiming hot exhaust gasses directly at your turbo inlet. That's very nearly the epitome of bad idea. Get an exhaust shop to cut it, turn it about 90 degrees clockwise, and re-weld it, then at least it'll be blowing down onto your downpipe. Even better, get an exhaust shop to make you a dump tube that runs somewhere not-bad.

jalenda9

Lol yeah I figured that haha but figured I'd see what you guys do. I see people run the dump pipe down and then have it welded into the downpipe so it's integrated into it.

I'll get that figured out though. I might just get a different not **** manifold haha

NotARaCist

iTrader: (1)

You can do that, but there's work involved in getting that just right, and even if you do, you'll still lose a tiny bit of power in the process. Just get a pipe fabbed to dump the gasses and call it a day.

jalenda9

Yeah your right haha I will see who can fab me up one

B and B

iTrader: (3)

Looks like if you just flipped that donkey dick it might point down towards the downpipe area? Or may bang into turbine housing.



The oil fittings on the Holsets have an o-ring under the hex and screw down almost like a machine screw type thread. At least mine did.
I bet you could get one at a Dodge dealership or online oem parts supplier.

I took the oem fitting and one that matched my feed line from Fastturbo(cuz I couldn't find a combo of the two) to a diesel shop and the country boy walked back into the shop and emerged literally in about 5 minutes and handed me back the spawn of the two.
He cut the one that fit the feed line in half and awesomely brazed it to the Holset fitting that threaded into the chra.
I don't have a restrictor so I may get too much pressure sometimes.
You should have seen the look on his face when I asked about an oil restrictor..?
(Gotdamn ricers!?) Telling them I was using it on a Honda already had caused a stir, lol.
I think they get a lot of oil in their original application, but under lower pressure.
The drains are a big *** hard pipe that drops straight down.
We can't do either one of those very well, or I couldn't.

Haha, thanks for some new sig material Mac.

2kdrift

It would be pointing up twards his hood

jalenda9

So does anyone know if this fitting will work? It came with a crush washer but it a not thick enough to really do any sort of sealing in between where the hex portion of the fitting is and the chra. I've been hearing of holsets having oringed fittings but I can't seem to find one with the same metric threads. I also got a m12x1.5 to -4an fitting and it was wayy to small. So I believe this fitting is the correct size but will it work is the question?

B and B

iTrader: (3)

Using the end that isn't bolted up in the pic. (still referring to da elbow)

jalenda9

Lol yeah I thought about that but I really don't want a hole in my hood...



So no one knows if that fitting will work for the oil inlet? Can I just buy and similar sized o-ring and just do it like that?

TheShodan

iTrader: (14)

I actually think you're at the "try it" phase at this point.. No hand holding this time around.. :-)..

If it's too much, then stop, and try another size

jalenda9

Haha damn it. Time to sink or float. Well I will try it an see man. When you say if it's too much what do mean? Oil going to the turbo? Or? Cause it fits the hole on the fitting just seems smaller then the hole on the inlet of the turbo...

TravisBiggie

the size not matching isn't the problem, your oil pressure is what matters.

after reading your posts.. I go and look at my ******* turbo... I too have a m12 1.5 to -3an and it fits into the stock adapter that goes into the turbo oil feed... but Its not screwing in deep enough to make a seal... so now it looks like I will be forced to buy the same m16 fitting you have....

thread tape it, and it should seal okay. I'm gonna buy a m16 to -3an and call it a day.

edit : my luck, m16x1.5 -3an doesn't exist, now I must get a -4an and find out how to connect my -3an line to it, which I don't want to replace..

edit again : found a m16x1.5 with a 1/8 npt female on top. Will buy this, put my 1/8 npt -3an fitting in, use my original feed line. Good game.

jalenda9

Good **** man. And I'm gonna check the pressure once I get this running. And literally since I didn't know I ordered m12,m14, and m16 x1.5 to -4an and the first one that showed up was an m16 and it fit so I knew for a fact everything else 2 other fittings which I spent at most teeny dollars on wasn't gonna fit lol fml haha but gl dude

TravisBiggie

just return em.

B and B

iTrader: (3)

Was referring to this one