This may sound pretty dam basic, but I feel i have to ask. The gold bracket in the picture pulls against the CHRA of the turbo in the pic and holds it in place once i put all of the bolts in right? I guess I'm paranoid after waiting so long for this to come in, but a couple small brackets and 6 bolts or so hold that heavy turbine housing and 14 pound turbo together?! Granted the exhaust will hold it up some but still. I just line up the brackets bolt them on and then clock the turbo to match up to my IC pipe right? I was planing on using red locktite on those bolts too.

Any feedback is appreciated. Doesn't Justin do excellent work on these!

Yup, you are correct, the 3 plates hold the CHRA+Compressor to the turbine housing. I don't know what torque specs would be, but I just torqued it down as hard as I could with an open end wrench. I also used anti-seize on the bolts.

You'll need to rotate the CHRA to get all the bolts in as the oil fittings will cover a bolt hole or two (did for me anyway).

Yes, Justin does amazing work

Edit:
Adding pictures of my finished setup




There were a couple issues I ran into when putting the o2 housing on. 2 involved gaskets

In the upper right portion of the steel gasket, there was massive over hang into the waste gate passage. I grinded it down to remove the obstruction. I didn't notice this until after I already sprayed it with copper spray. I did get it cleaned up before reinstallation.



Next issue was the supplied gasket for the -12AN drain fitting. The gasket was too large on the one side and needed trimmed to fit properly.


I decided to brighten the cover a little bit by sanding off the paint over "Holset"


On another note, for anyone planning on using an external WG housing like the one above, install the downpipe bolts into it first before mounting onto the turbine housing. I forgot (didn't realize) to put them in first and had to take the o2 housing off again.

turboboy4 said:

Having a problem with my car over boosting, I suspected my mbc, so I took it out and capped the boost line off the compressor housing and just left the wastegate vented. Car still slams to 30 psi boost, I am suspecting a bad diaghram in the wastegate. Anyone help me out????

Click to expand...

This sounds like you capped the boost line off and didn't have any boost signal going to the wastegate?

aero_sallee said:

This sounds like you capped the boost line off and didn't have any boost signal going to the wastegate?

Click to expand...

Correct, I assumed that if there is no boost signal to the wastegate, it should only boost to wastegate spring pressure which it still went to 30 pounds of boost. So I am thinking I have a bad diaphragm in the wastegate but not positive. I have been trying to get all the bugs worked out before I take it to get it dynoed. Turbo sure spools slow right not, but I am hoping alot of that is from not being tuned

Gooberlog said:

I was planing on using red locktite on those bolts too.

Click to expand...

Waste of time. The red Loctite is de-activated by heat....and 1600* can definitely have it's effect on Loctite.

Just put it together, leave the pinch bolts loose until you get the oil line connected....tighten the pinch bolts, then clock the compressor cover last.

turboboy4 said:

Having a problem with my car over boosting, I suspected my mbc, so I took it out and capped the boost line off the compressor housing and just left the wastegate vented. Car still slams to 30 psi boost, I am suspecting a bad diaghram in the wastegate. Anyone help me out????

Click to expand...

You need that line hooked up. Basically the line off the bottom of the wastegate housing should go directly to a fitting off the turbo itself for the best supply. The wastegate even with spring still needs a vac/boost source to close and open it. That is why it is still spiking to 30psi.

And so you know for the mbc it should be hooked to the top nipple on the wastegate, then t'd into the same vac source as the bottom of the wastegate.
Hook your line back to the turbo and let us know how you make out.

Here is a pic of what you should have.

You can also hook an external up by leaving the top port vented and hook the source/boost controller to the bottom and it will work too.

GST95 said:

You can also hook an external up by leaving the top port vented and hook the source/boost controller to the bottom and it will work too.

Click to expand...

This is how I have it hooked up, line from the turbo to the mbc to the bottom port on the wg and the top is vented

i think im getting a holset for my b-day hahaha i wish

turboboy4 said:

This is how I have it hooked up, line from the turbo to the mbc to the bottom port on the wg and the top is vented

Click to expand...

Try taking the mbc out of the middle and just run a line from the turbo to the wastegate. That should give you whatever boost your spring is.

GST95 said:

Try taking the mbc out of the middle and just run a line from the turbo to the wastegate. That should give you whatever boost your spring is.

Click to expand...

I will try that. Any ideas why it might be spooling so slow I dont see 25 psi until like 5500 rpm plus in 2nd. Possibly the tune or lack there of haha??? Just trying to figure out if there is possibly a problem with my wastegate. Might just order the parts to rebuild it since i bought it used

jusmx141 said:

Waste of time. The red Loctite is de-activated by heat....and 1600* can definitely have it's effect on Loctite.

Just put it together, leave the pinch bolts loose until you get the oil line connected....tighten the pinch bolts, then clock the compressor cover last.

Click to expand...

Good deal, got it. Thanks once again.
I hope Sunday i will have a chance to work on it, as soon as i picked up the turbo and bep housing on friday i got called in to work!

turboboy4 said:

I will try that. Any ideas why it might be spooling so slow I dont see 25 psi until like 5500 rpm plus in 2nd. Possibly the tune or lack there of haha??? Just trying to figure out if there is possibly a problem with my wastegate. Might just order the parts to rebuild it since i bought it used

Click to expand...

It could be a lot of things. Boost leaks, exhaust leaks pre-turbine, wastegate not all the way closed. You are using a he351cw, right?

Yea that is correct HE351cw, I know I have an exhaust leak on the v band of the turbo I have to fix just havent had the chance. I should check for boost leaks I guess just been being lazy. I dont really understand though considering when it does boost it will boost to 30 pounds until I let out of it cause I am not trying to blow a headgasket here haha

turboboy4 said:

I will try that. Any ideas why it might be spooling so slow I dont see 25 psi until like 5500 rpm plus in 2nd. Possibly the tune or lack there of haha??? Just trying to figure out if there is possibly a problem with my wastegate. Might just order the parts to rebuild it since i bought it used

Click to expand...

What are you running for wastegate? Did you make sure the firing ring was in it?

I didnt take it apart, it is a tial knockoff that was rebuilt with tial parts. I am thinking of just buying a new diaphragm, valve seat, and valve for it. Just trying to get some help first

turboboy4 said:

I didnt take it apart, it is a tial knockoff that was rebuilt with tial parts. I am thinking of just buying a new diaphragm, valve seat, and valve for it. Just trying to get some help first

Click to expand...

It would be a lot cheaper to actually diagnose the problem rather than throwing parts at it and hoping something fixes it.

turboboy4 said:

I didnt take it apart, it is a tial knockoff that was rebuilt with tial parts. I am thinking of just buying a new diaphragm, valve seat, and valve for it. Just trying to get some help first

Click to expand...

Take the gate off and check it, if the diaphragm is ripped you'll be able to see it.
With the spring out you'll be able to see if the valve is sliding ok or not also.
And make sure the firing ring is in place too. I think you will find it is going to be something stupid causing the porblem.
Exactly what turbo are you running and what housing?

I am running the he351cw off an 04 cummins auto. With the stock 9 cm housing, I just really thought this turbo would spool alot faster considering it is similair in size to an hx35 with the t3 BEP housing except the 9cm housing is a little smaller like .65A/R i think. But still could be the tune and a problem with the wastegate I guess

The HE351CW has a 7-blade HX40 compressor mated to the small turbine wheel used in the HY35, and in the non-divided 9cm housing. Neither the HY35 or HE351 would spool as fast a running a true divided T3 setup on a HX35 or HX40. In comparing the HY35 to the HE351, I'd think the HY35 would spool a little faster because the HY uses the 7-blade HX35 wheel....but either way I'd think you should be seeing full boost around 4500.

The compressor is your turbo is 70 lb/min capable....but I don't know if the turbine wheel and housing combo will allow it to flow to it's potential.

Ok so I understand what you are saying, But I still think it should be spooling faster than what it is at this point. So between the tune and the potential wastegate problem that should make up the 1000-1300 rpm gap that I have now I hope. I think my timing and MAF curve is off causing it to run crappy right now

Regardless, we know the HE351CW is a reliable beast.

http://www.dsmtuners.com/forums/152178344-post815.html

IIRC, the 04 was a split year for the turbo. 03-04 should have a he341cw and the 04.5 got the he351cw. Either way id be looking for problems if it was spooling much later than 4000rpm.

I know it is the he351cw, it was on the tag for the wastegate actuator, but yes I know that the spool is slow and thats what I am trying to track down between the tune and possible wastegate/mbc problem. I also am at 7800 ft elevation so air moves pretty damn slow to begin with

I was wondering, what different types of Divided manifolds can I use with a 8 Blade Holset Hx-35 on a .55AR Bep housing?

I always see here that you can use non divided manifolds, but I was looking for a divided manifols that fits onto the bep housing of a Hx-35.

Specifically on a 1991 GSX