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Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
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IIRC, compressor scroll is about 7.5 to 8". Weight doesn't seem any heavier than the 60-1 I had before but didn't weigh to confirm.

With no boost controller, T4 0.84AR divided scroll with single WG, and doing a 4th gear (G50, 1.15:1 4th gear) roll on, was seeing 1-bar by 3,600 RPM.

Now, if I had did this test in a 930 in 4th (which is significantly higher geared), I'm sure it'd be a decent amount quicker boost onset.

I believe running a truly divided header/WG circuit, a .70 to .64 AR, and boost controller (aids keeping WG closed longer to target boost), this turbo would spool lightening quick.

Point is, I think sub-3000 RPM to 1-bar is achievable with a HX-40 and that's pretty good for a T4 footprint using a "P" trim turbine wheel and journal bearings.

Last edited by Tippy; 11-12-2013 at 07:29 PM..
Old 11-12-2013, 07:23 PM
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Where do you guys find these cheap holset turbos?
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Jesper
Carrera 3.0 1975
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Old 11-12-2013, 08:15 PM
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Brando
 
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Can't wait to see. I ordered a rebuild kit as well just in case.
eBay hasem new and used. Priced well either new or used.
There is some piecing together to do though. This isn't bolt on. It's not too bad I don't think though. Just finding the correct fittings and restrictors for correct psi oil pressure, and drain. Hoping the vband fits mine, and that things go smoothly.
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Turbo powa!
1977 911s. it's cool
Old 11-12-2013, 09:12 PM
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Turbonut
 
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As per Holset manual, it is mandatory to use oil restrictor. I fabricated mine from the regular fitting: welded it shut and then drilled a 2mm opening through it on the lathe.
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Old 11-13-2013, 01:57 AM
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Brando
 
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Happy birthday to me, I got the turbo. And it is big. It's in good shape and I'm not rebuilding it right now. But I will take it apart and clean, paint and basically look things over while I wait for other parts to arive. My oil feed fitting from the Garrett fits this, I just need to drill it out a little more. So I'm just waiting for a 4 insh to 3 inch silicone hose and some v band flanges and a close off plate for the wg flapper. I'm excited. It is heavier than the Garrett. The Garrett is small though. Yeah
Old 11-14-2013, 09:56 AM
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Brandon, I have a 4" to 3" heavy duty 90 degree elbow for connecting from turbo to CIS intake pipe if that's what you need. I'm back in town Monday. Let me know ...
Old 11-14-2013, 12:31 PM
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Brando
 
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Thanks but I think the straight coupler reducer should mount the stock intake as it is. We'll see. Thanks though.
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Turbo powa!
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Old 11-14-2013, 12:33 PM
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Chain fence eating turbo
 
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I can't wait to hear your results.

Regarding oiling, I just used the (I believe) -4 AN line and restrictor that was already on my car.

Here's something you might consider, the CHRA has a metric oil port but I simply tapped to 1/4"NPT. It tapped really easy and makes hooking up easy vs metric adapters.
Old 11-14-2013, 05:25 PM
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Brando
 
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Tippy, I need to see pics of that thing on your car. I can't see how this thing will fit. I'm hitting on the engine, the Tin, and it's pretty much entering the engine compartment it's huge!
I have the compressor off so it will at least sit on the headers but dang.
Old 11-14-2013, 05:51 PM
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Brando
 
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I'm going to grind the compressor housing to clear the engine. It's just the mounting brackets for the actuator anyway.
Old 11-14-2013, 06:32 PM
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Chain fence eating turbo
 
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Mine wasn't too bad to fit at all. When installing, put turbine end up and pushed through between engine and body. Twisted unit to clear outlet of compressor and went right in. Did it twice now no problem.

My headers run the turbo more parallel with back of engine than the factory from what I've seen here that appear fairly angled. Not sure if that helps clearance.
Old 11-14-2013, 06:35 PM
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Brando
 
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Ground the bracket off and it clears easy.
Old 11-14-2013, 06:57 PM
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Chain fence eating turbo
 
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Hx35?
Old 11-14-2013, 07:44 PM
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Brando
 
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Quote:
Originally Posted by Tippy View Post
Hx35?
Yup. And it's big too.
Garrett weighs 14.5 lb.
hx35 weighs 24.8 and I'm still adding another plate with vband on exit.



It wouldn't clear so I ground off the wh actuator mounts. Looks better anyway.


Now I'm on hold till the pb blaster can do its work and release the cartridge from the turbine housing so I can clock it and check clearance for the drip tank. Everything's upside down the way it is now.
I really wanted to have it mocked up tonight so I could clean and paint in anticipation of the rest if what I needed.
The Garrett oil restrictor fits perfectly. I drilled The hole larger(2mm) and the drain is same as the kkk turbos. No problem. The tuner import guys using this turbo really freaked me out but it was no issue.
I should have everything I need to finish up by next week. Bummer it's not ready now but I need to excersize patience because it needs cleaned anyway.
I miss my car.
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Turbo powa!
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Last edited by quattrorunner; 11-14-2013 at 08:16 PM..
Old 11-14-2013, 08:14 PM
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Brando
 
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You can see why it wasn't clearing. It's close to the chain cover.

Get it in there!
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Turbo powa!
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Old 11-14-2013, 08:23 PM
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That looks awesome Quattro.

I wish I was able to work on stuff like that. No time for now.

I am not complaining, at least I drive the 930 to work daily. Looking forward to hearing about you being back on the road.

Thanks for sharing.
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Carrera 3.0 1975
930 1978 OEM Matte Schwartz, ANDIAL IC, BL WUR, SC cams. LMA-3 w. XD-16 and CP transducer
www.stauningwhisky.dk
Old 11-14-2013, 08:30 PM
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Chain fence eating turbo
 
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What mm is the inducer for the compressor? 56?
Old 11-14-2013, 08:56 PM
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I'm not sure and I don't have a caliper here. I'll bring one from work.
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Turbo powa!
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Old 11-14-2013, 09:14 PM
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Wow! That thing is massive. I'm looking forward to the results as well.
Good luck.
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Old 11-15-2013, 08:55 AM
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Quote:
Originally Posted by Tippy View Post
What is really interesting is you don't even need a water pump. Set the CHRA at the proper angle, add a small water tank, plumb up fittings, and you're done.
This is how coal heated houses before electric circulating pumps. Hotter water naturally rises and displaces the cooler water which then gets hotter, etc etc.

I've just never seen an automotive example before. Have you? Any links?
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Old 11-15-2013, 09:23 AM
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