Holset Failure

[Gst18]

Well last weekend i got my car running. Had a few good runs at low boost (8 psi). After about 20 min of driving i heard a grinding noise.

With little diagnosing time i took a closer look at my H1E and found out that the compressor wheel nut came loose. How is this possible? Reverse threads should have it tighten as it spins.
I contacted a few turbo specialists and they said it could have been caused by the reverse flow of pressure into the turbo. I told them it was impossible since i was venting my BOV properly.

Any of you guys have any ideas?

The damage is not that great. The compressor wheel shaved a small amout of the compressor housing and only got very little damage.
Im currently looking for a compressor wheel upgrade. If any of you guys know where i might find one please let me know. Also would a 6 blade wheel be better than an 8 blade?

Thanks

 

[olmytsi]

I have seen a few threads about this happening. It's most likely manufacturer error if it's brand new or the rebuilder's fault if it's been rebuilt.

 

[Gst18]

anyone know where i can find a upgrade compressor wheel? besides htturbo

 

[Burnett03]

anyone know where i can find a upgrade compressor wheel? besides htturbo

I saw some on ebay last night.

 

[Gst18]

you found comp. wheels for an h1e on ebay? what did u search? I looked earlier and couldnt find anything

 

[1993eclipseGS]

Thats a shame I just found this thread, I just threw out a center cartridge from my brand new h1e. The wheels themselves were perfect

 

[Gst18]

. It cost me 150 for the wheel plus 56 to balance.

 

[TimG]

That's cheap.

 

[turbo addict]

Well last weekend i got my car running. Had a few good runs at low boost (8 psi). After about 20 min of driving i heard a grinding noise.

With little diagnosing time i took a closer look at my H1E and found out that the compressor wheel nut came loose. How is this possible? Reverse threads should have it tighten as it spins.
I contacted a few turbo specialists and they said it could have been caused by the reverse flow of pressure into the turbo. I told them it was impossible since i was venting my BOV properly.

Any of you guys have any ideas?

The damage is not that great. The compressor wheel shaved a small amout of the compressor housing and only got very little damage.
Im currently looking for a compressor wheel upgrade. If any of you guys know where i might find one please let me know. Also would a 6 blade wheel be better than an 8 blade?

Thanks

If you are on the left side of the surge line at any time when boosting, it can surge even just driving at normal (low) boost.

 

[Mike1992]

If you are on the left side of the surge line at any time when boosting, it can surge even just driving at normal (low) boost.

Yes, adjust the bov to hold the boost your trying to run maybe 1-3 psi more. I find it best to boost leak test the system up to what I run and listen for when the bov opens.

 

[Gst18]

Well first off I would need a compressor map to see what could be happening.
Secondly, The turbo has surge ports to protect it from surging.... Isnt surging just compressed air going back to the turbocharger? The Bov should be able to release all pressurized air as the TB closes.

Maybe im missing something because i dont really understand whats going on..
Please be a little more specific.

Thank you

 

[aero_sallee]

Well first off I would need a compressor map to see what could be happening.
Secondly, The turbo has surge ports to protect it from surging.... Isnt surging just compressed air going back to the turbocharger? The Bov should be able to release all pressurized air as the TB closes.

Maybe im missing something because i dont really understand whats going on..
Please be a little more specific.

Thank you

It doesn't just happen as the throttle is closed. It can happen anytime the turbo is attempting to compress more air than the engine is able to ingest at that RPM. The surge ports will make the surge line move to the left, but it is still very possible to hit it. At that low of boost I doubt the surge could be bad enough to damage the turbo or make the nut back off. With the Hx40 turbos from the reports I've heard they tend to surge at high pressure. Especially at in that short of time.
I'm betting it was assembly error.

What did you end up doing for a TH on this turbo?

 

[Gst18]

I built a custom manifold with a divided t4 flange. The manifold is twin scroll with twin 38 mm wastegates.

Heres are some pics.

I will post pics later next week when its all running again.

http://www.dsmtuners.com/forums/showthread.php?t=260104

 

[Mike1992]

I think you wasted your time using the stock hotside, you have any idea of the a/r on one of those? You wont see full boost till like 5k plus

I built a custom manifold with a divided t4 flange. The manifold is twin scroll with twin 38 mm wastegates.

Heres are some pics.

I will post pics later next week when its all running again.

http://www.dsmtuners.com/forums/showthread.php?t=260104

 

[1gnasty]

with a set up like this one why not go garrett instead of cheap Holset

 

[topnotchgsx]

Cheap holset!?!?!?! Dont hate now. Of course you can get them ALOT cheaper than Garrett but they are awesome turbos. Balanced out of the box for 50+++psi!!! They spool awesome with a good exhaust housing, make great horsepower, and can be had for great prices. Maybe you didnt see the guy in the drag racing section that just ran like an 11.2 @ 126 on his hx-35. These holsets are built to last like a million miles. I love my holset and would easily buy another one in a heartbeat.

 

[Mike1992]

Maybe you didnt see the guy in the drag racing section that just ran like an 11.2 @ 126 on his hx-35.

I got $450 in mine total

 

[topnotchgsx]

I got $425 in mine!!! . $250 for the turbo, and $175 for the bullseye t3 exhaust housing. A lot better than the 18cm^2 that was on there. Spool is EXCELLENT with this exhaust housing. You can check out my gallery if you really want to see a comparion pic with them. .

 

[1gnasty]

Cheap holset!?!?!?! Dont hate now. Of course you can get them ALOT cheaper than Garrett but they are awesome turbos. Balanced out of the box for 50+++psi!!! They spool awesome with a good exhaust housing, make great horsepower, and can be had for great prices. Maybe you didnt see the guy in the drag racing section that just ran like an 11.2 @ 126 on his hx-35. These holsets are built to last like a million miles. I love my holset and would easily buy another one in a heartbeat.

if they are o great why i hear so manny storys about them going bad so quick and there is no pro using them in their cars?

 

[topnotchgsx]

Holset turbo's are essentially Borg Warner turbos. Guess who runs a borg warner turbo. The fastest DSM in the world. Brent Rau! Anymore questions?

 

[want_a_gsx]

pwned! I will be running the hx35 myself in a couple of months. Holsets are very underrated turbos. Not many people that I know personally know what a Holset turbo is...

 

[1gnasty]

pwned! I will be running the hx35 myself in a couple of months. Holsets are very underrated turbos. Not many people that I know personally know what a Holset turbo is...

pwned what look at the sized of that turbo and rated at 600hp that is retarded that shows how ineficient they are compare to garrett

 

[want_a_gsx]

Yes, Holsets are huge turbos and very efficient, but you also have to think about what changes are needed to make it a direct bolton for a dsm.

To make these turbos bolt ons, one must get a restrictive .55 AR bullseye turbine housing. I want to say that it's 7cm^2, just like the housing on the evo316g, but I'm not quite sure.

Bullseye housing is needed because the original housing that come with Holsets range from 9-18cm^2. This would make spool times very slow, with small usable power band. On a 2.0L, a completely stock Holset (w/o the bullseye housing) would hit full spool above 5k rpm(depending on which housing is on the turbo).How often do you hear of a 2.0L revving 9k+?

The 9cm^2 housing would be the biggest I would personally run on a dsm motor. Well, that would be if I were to rev up to 8.5k rpm or so...

What I am trying to say is that these turbos have a LOT of potential, and the flow numbers are rated with a bullseye housing; even with the BE housing, they are still one of the best bang for buck turbos in the market. Maybe you should stop bashing on turbos that you have never had any experience with, and respect those who made the smart decision to get a Holset...

 

[1gnasty]

Yes, Holsets are huge turbos and very efficient, but you also have to think about what changes are needed to make it a direct bolton for a dsm.

To make these turbos bolt ons, one must get a restrictive .55 AR bullseye turbine housing. I want to say that it's 7cm^2, just like the housing on the evo316g, but I'm not quite sure.

Bullseye housing is needed because the original housing that come with Holsets range from 9-18cm^2. This would make spool times very slow, with small usable power band. On a 2.0L, a completely stock Holset (w/o the bullseye housing) would hit full spool above 5k rpm(depending on which housing is on the turbo).How often do you hear of a 2.0L revving 9k+?

The 9cm^2 housing would be the biggest I would personally run on a dsm motor. Well, that would be if I were to rev up to 8.5k rpm or so...

What I am trying to say is that these turbos have a LOT of potential, and the flow numbers are rated with a bullseye housing; even with the BE housing, they are still one of the best bang for buck turbos in the market. Maybe you should stop bashing on turbos that you have never had any experience with, and respect those who made the smart decision to get a Holset...

ok i get ## point, but look at his set up he does not have a bolt on housing set up, he has a equal length manny, there for why not use a large frame turbo im sure he is prepare to rev 9000+, im using a gt4088 non bb amd i rev all the way to 9500 with no problem, ok let me retreve the cheap holset turbo part, but for a set up like that garrett will work better

 

[want_a_gsx]

...but for a set up like that garrett will work better

I still don't see why you are choosing Garrett's over Holset's, other than the fact that Garrett's are more known and somewhat of a "household name."

I don't see any proof or extensive testing showing that a Garrett is far more reliable, effective, and better flowing than a Holset. How do you know that for a setup like his, a Garrett will work better? You don't...

I am done here; there is no reason to argue about which turbos are better, since that is not what the original poster started this thread for.