Holset Turbos

[tbird]

Got my bullseye housing and they sent me wrong one.... i ordered external and got the internal one..... has anyone modified a stock dsm wastegate to work witht he internal setup????? if not can I just weld the flapper shut?

 

[ceedawg]

Hey ceedawg,

Why did you use -8 lines?

For future big hp mods.This way I'm all set.Plenty of fuel.

 

[tom1995tsi]

Got my bullseye housing and they sent me wrong one.... i ordered external and got the internal one..... has anyone modified a stock dsm wastegate to work witht he internal setup????? if not can I just weld the flapper shut?

Just dont hook a vac. line to the waste gate on the turbo, it came with the waste gate acuator right? Also tighten down the arm down all the way so it holds tight and you wont have to weld it.

 

[tbird]

no it didnt come with the actuator im hopinh to make a plate for my stock 14b actuator to bolt on so i don have to cut up my nice 02 dump housing...

 

[tbird]

little update on my turbo..... I have the h1e same as hx40 and bullseye diy setup..... well I was alittle dissapoited with what I got none of the oil fittings worked. Had to buy custom fitting for the feed and for the oil filter housing.... all fittings had wrong threads maybe a mistake dunno.... turbo install wasnt to bad. Had to do the hammer mod to the water pipe to get it to fit, and make a plate to use my internal actuator I had.... had all weekend in doing this... but looks great on there with the 02 dump housing... Overall I would have just bought the housing and done the rest my self... but Looks great.. Hope to have the tranny back in tomorrow for some test runs... This Turbo is a Monster!!!!!

 

[defrag010]

Sweeeeeet!! What is the assembly number of the H1E you got, and where did you get it from?

It might be of use to some people *cough* maglin *cough* in finding the right sized H1E turbine to work with the housings.

Which sized bullseye housing did you use?

So you used your stock wastegate actuator? Where did you mount the plate to the turbo at?

 

[unlikely hero]

Where did you get the oil return fitting at? I know the lengths are going to be off, especially since I went with the 2.4 block but I'm not sure where to get the fitting for the oil return.
=Jason-

 

[IPT]

What is the bolt spacing on the H1E turbo? What was the thread pitch on the custom fitting?

 

[tbird]

not exatcly sur eon the exact model of it i lost the tag in the sand blaster.. the oil feed fitting was like 5/8-18 to a -4 i need to find it in a 90 degree.. I did use the stock wastegate form a 14b but the bracket and made a new one that bolted to the compressor housing had to drill and tap holes.... took a few hours but looks nice... I bought the return line off bullseye... they made the flanges.

 

[masemn]

Problem with the H1c is, the smallest turbine housing you can get for it is a 16cm^2 unless you machine it out for 12cm^2. I know guys have machined out hx40s for the 12cm^2 housing with much performance success and absolutely no longevity whatsoever.

I have been tuning my H1C for nearly a month now and i've gotta say ITS SCARY!! this thing boosts and boosts im affraid of it doing engine damage,but it never ever does just every hose you have!!

 

[masemn]

so what is the spool of the hx-35 on a stock 7 bolt engine? i got all supporting mods, but it would be going on a daily driver, and i dont want a really laggy turbo. is this the rite turbo or should i go with either a big16g or a tbo4 v-trim?

MY H1C holset is on a daily driver and i dont get any lag at all,fast spooling right NOW,30psi boost.

 

[masemn]

Well it isnt the waterpipe that its hitting. The turbine housing hits the bulge where the bal shaft sits. I started to make another adapter though and it should work the way Im doing it now. I have an H1C. If the holset turbine housing doesnt pan out Ill buy the bullseye so its not foresale.

I RUN THE BULLSEYE AND HAD TO GRIND THE HOUSING OF THE COMPRESSOR,AND SHAVE THE FRAME TO GET THE OIL RETURN PIPE TO FIT ON MY 91 GSX.

 

[PSI TSI]

Masemn

what do you mean no lag? that seems abit unrealistic but hey I dont know. When do you reach full boost?.

Where did you run your oil feed from? What do you have done to your engine?
Would you mind giving us your mod list and what your tuning with?

Im excited even more now to get this thing going.

 

[86MCSS]

MY H1C holset is on a daily driver and i dont get any lag at all,fast spooling right NOW,30psi boost.

Details on your setup would be nice.

 

[masemn]

Masemn

what do you mean no lag? that seems abit unrealistic but hey I dont know. When do you reach full boost?.

Where did you run your oil feed from? What do you have done to your engine?
Would you mind giving us your mod list and what your tuning with?

Im excited even more now to get this thing going.

IM USING THE OIL LINE FROM THE TOP CORNER OF MY HEAD,AT FIRST I had tried feding it from down by the filter but I didnt feel like a good plan."common sense issue" and for mods....550 rc's which need to be bigger venom rail,aero 1000 pump,9.5:1 jasper 2.0 4g63,tubular header,turbo smart controler...ect.

 

[unlikely hero]

What size are you guys using for the oil feed? I'll be going out of the oil filter housing.
=Jason-

 

[1FAST2G]

I'm getting a big boost leak form where the compressor housing meets the turbo, anybody else having this problem with there hx-35? Is there suppose to be some type of o-ring there or something? If I get it to stop leaking from one spot it will leak from another. Maybe I need a new snap ring.

 

[1FAST2G]

Anybody have any advice I'm going to be pulling the turbo off and checking it out in a couple of days.

 

[unlikely hero]

I'm having a bi*** of a time getting the exhaust housing off my HX-35w. Anyone else run into this problem and have any suggestions in getting it off???? Thanks
=Jason-

 

[defrag010]

I had a tough time getting my H1C housing off too. I ended up squirting penetrating lube (I used liquid wrench) into the CHRA-->Turbine housing crack, and it came off after about 3 days of soaking it.

 

[Eclipse Rogue]

My HX 40 came right off.

 

[unlikely hero]

Hey what size oil feeds are you guys running?
=Jason-

 

[Maglin]

Hey guys. Well I had to use a 10 lbs sledge hammer on the turbine housing to get my housing off the H1E. It was really on their. And some PB Blaster as well. Just be carefull not to hit the turbine wheel tring to get that TH off. I finally got my car back together. Had a rough time with the oil pump deciding to seeze up on me taking out my timing belt as well. But got a OEM front case with the new revised oil pump gears and just running my 14B as my B16G is toated. I'm putting down about 280 HP right now at 19 PSI. Anyways.

My point. Now that my fuel system is up to par for just about any turbo I've been going back and forth on the HX-35 or the H1E. I plan to order the Turbine housing tomarrow. I have the Holset Repair manual and here are the specs you are asking about and more for you. This is for all HX series to 40..

Oil Inlet/Outlet Flange Fitting is :
Flange fitting M8 x 1.25

Bearing Tolerances are attached.

Clamp Plate Bolts are M8 x 1.25 (13 mm) - Bolts that hold the TH to the CHRA

Flange Fasteners - Threaded Holes (Holset Turbine Housing Inlet)
M10 x 1.5

10. The orientation of turbine housing, bearing housing and compressor cover is fixed according to application. During installation, do not attempt to rotate these components. Inclined turbocharger installation is not recommended. If an installed angle is necessary, oil inlet centreline must be +/- 10 degrees from vertical and rotor centreline +/- 5 degrees from horizontal.

11. Holset permits oil return pipes to decline at an overall angle of not less than 30 degrees below horizontal. All turbocharger applications require a pipe of internal diameter greater than 19 mm which has integrated connectors. To ensure oil returns into the engine under all operating conditions, the return connection into the engine sump must not be submerged and the outlet flange of the turbocharger must be 50 mm above the maximum oil level of the engine sump pan. Crankcase pressure should be limited ideally to 0.8
kPa (0.12 lbf/in2) but 1.4 kPa (0.20 lbf/in2) can be accepted by reference to Holset.

12. Oil pressure of 150 kPa (20 lbf/in2) must show at the oil inlet within 3 - 4 seconds of engine firing to prevent damage to turbocharger bearing system. A flexible supply pipe is recommended.

13. The minimum oil pressure when the engine is on load must be 210 kPa (30 lbf/in2). Maximum permissible operating pressure is 500 kPa (72 lbf/in2) although 600 kPa (88 lbf/in2) is permitted during cold start up. Under idling conditions pressure should not fall below 70 kPa (10 lbf/in2).

14. Recommended oil flows for the turbochargers are 2 litre/min at idle and 3 litre/min above maximum torque speed.


Their that is all the important info that I can digest out of the Manual. I hope this helps some of you with questions about Oil pressure and oil fitting sizes. Some HX-xx use O-Ring seals on the compressor housing and some do not. I imagine you can order the O-Ring directly from Holset. I'm going to do some digging around and see if I can't get the dimensions of the O-Ring so we can just get one from NAPA and not have to deal with Holset or some truck company that thinks we are stupid kids.

 

[NOSLO2PT0]

I'm lazy and don't feel like trolling through 18 pages, so I'll ask here. Anybody got any dyno #'s for these turbos yet? Curious to see if they are making the power that they are supposed to be making.

 

[93AWDTalon1]

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This was the only dyno posted mods that were listed were
HX-35 Internal at 25-26 psi
mostly C16
750's
standalone EMS
FMIC
Cams
Rods and pistons
Intake mani and TB
and the obvious bolt on's

and this was said
He was only able to make 3 pulls and thought it was still too rich on the spool up. Some puffs of black smoke out the back. This was a discounted test unit and wont qualify for The Turbo Challenge, otherwise it would be $175 in his pocket.