HX40 upgrade, BAE 7 blade 62mm compressor wheel

[rr06rs]

Hmmm...I'm actually a little interested in these Pure Turbo wheels?

 

[RWD4G63]

I don't think they have them posted online. I e-mailed the sales rep and he gave me those two options. I can't find any pics, but all of their other billet wheels look okay, and the results with them seem to be good so far in the Honda and Nissan crowd.

Those wheels are $295.

 

[RWD4G63]

This is the drop in wheel.

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[Boostdriven]

Nice looking piece for sure, looks like its taller then the stock 6 blade and the hub looks like is thinner further down so it should flow more then the 6 blade, price isn't bad either. Thanks for sharing that with us.

 

[dsmcurse]

That is a very nice lookin wheel

 

[blizz99]

After I get back from my deployment and DrewJ tunes my car I'll test the 62mm back to back against my billet 7 blade. I'll just have the 62mm waiting for me when I get home

 

[talondave]

Why waste your money on this wheel if you haven't maxed out the stock 60mm? I know none of you have!

 

[Boostdriven]

After I get back from my deployment and DrewJ tunes my car I'll test the 62mm back to back against my billet 7 blade. I'll just have the 62mm waiting for me when I get home

It will be nice to see how each wheel performs, keep us posted.

 

[rr06rs]

Looks like the new Monster hx40 is available now with compressor sizes from 67.5, 71.5, and 75mm......

BAE Turbo Systems Inc. - HX40 Monster 40

 

[JusMX141]

No pricing or pictures. Scary.

 

[LandSpeed-DSM]

No pricing or pictures. Scary.

Agreed, I would like to be able to upgrade my 52 to this "monster 75.5x99" comp wheel.. anyone willing to share Bob @ BAE's number?

 

[JusMX141]

They're just HX52/55 compressors that are drilled to fit a HX40 turbine, apparently. All have 99mm exducers like the 52/55 wheels, and are all inducer specs that the HX52 and HX55 turbos use as well.

Wonder how they're stuffing these behind HX40 covers unless the MWE groove is missing, or they've somehow stepped up to a 5" inlet...that's why I'm curious to see the pics.

 

[Boostdriven]

I was told by Bob at bae that those new turbos are not just big compressor wheels stuffed in to regular HX40, its a completely different turbo. It uses HX40 size exhaust wheel, 76/64 10 blade though, attached to a big shaft like HX52. Completely new chra and a bigger compressor cover like HX52. The only thing about it is that you can unbolt you HX40 from the exhaust housing you have now and bolt that new turbo in it.

Personally I'm not to fond about running a big compressor wheel like 75.5mm pared with 64mm exhaust wheel. 67.5mm might be a better option but then again their built more for diesel engines so who knows last time I talked to him I think he told me that it will also be available with 10 blade 76/67 exhaust wheel which can still be used with HX40 housing with a little bit of machined work done to it.

 

[LandSpeed-DSM]

Right.. this would be paired with an 86mm turbine. Anyone got a part number?

 

[Enraged78]

OP,

I know that you have a 'quick spool' valve in your setup. Are you sure that the valve isn't restricting exhaust flow? Are you sure it's at 90 degrees when fully open? Are you sure there isn't a leak in the exhaust housing? Any one of these could explain why you are losing a few PSI in the upper range when others are not getting the same experience.

Now, let the dogpile continue!

- Matt

 

[Boostdriven]

OP,

I know that you have a 'quick spool' valve in your setup. Are you sure that the valve isn't restricting exhaust flow? Are you sure it's at 90 degrees when fully open? Are you sure there isn't a leak in the exhaust housing? Any one of these could explain why you are losing a few PSI in the upper range when others are not getting the same experience.

Now, let the dogpile continue!

- Matt

I did not use the spool valve with the set up I had at that time. I did figure out though what was causing my boost drop. I was using a 60mm wastegate with not strong enough spring. 60mm is roughly 4 square inches of surfaces area and at 25+ psi of exhaust pressure that's over 100 pounds pushing on that wastegate valve so the exhaust pressure was forcing my wastegate to open causing the boost drop. I switched to a smaller 50mm wastegate with a higher pressure spring.

Now to answer your other questions. Yes I'm sure that my valve is at 90* when its fully open because I built a stop for it I know I don't have any exhaust leaks now and I know I didn't have any then. As for the valve being a restriction well I'm sure it causes some kind of restriction considering that its a piece of steel sitting in the path of exhaust flow but being in the large chamber that its in, its probably very minor. I don't have any issues with boost drop now, in fact I think my valve works very well.

Oh and lets not continue the dogpile, I've got enough warnings as is

 

[blizz99]

Would any machining need to be done when I get the 62mm wheel upgrade?

 

[JusMX141]

Not unless you currently have a turbo with an 83mm compressor exducer as the setup comes with a machined compressor cover.

If you do plan to order this you may want to place your order by phone in order to be charged proper shipping. I had a customer inquire about this setup for a HX40 of theirs with a damaged compressor that I was going to rebuild and they said the shipping on the website is out of control so I had to check it out for myself...sure enough, cheapest shipping option for a 62mm/86mm HX40 compressor wheel and cover package to my zip is $62. WTF

 

[doesitonall4rs]

Man I have been running a 56mm 6 blade hx40 and keep chasing a boost drop issue for a long time now!

OP how is the 62mm compressor wheel holding up? I am thinking of upgrading my hx40 a little bit.

 

[Boostdriven]

Man I have been running a 56mm 6 blade hx40 and keep chasing a boost drop issue for a long time now!

OP how is the 62mm compressor wheel holding up? I am thinking of upgrading my hx40 a little bit.

At what boost do you get the boost drop, what is your wastegate set up and what spring do you have in it?

I'm not running that wheel anymore because I switched to HX52 but I did use it for a while and it held up just fine at 35 psi. Now that turbo is just sitting on my shelf.

If you want to upgrade to that wheel you will have to machine the center cartridge behind the compressor wheel to fit a larger 86mm exducer. It's not very hard to do but you have to do it carefully.

 

[doesitonall4rs]

At what boost do you get the boost drop, what is your wastegate set up and what spring do you have in it?

I'm not running that wheel anymore because I switched to HX52 but I did use it for a while and it held up just fine at 35 psi. Now that turbo is just sitting on my shelf.

If you want to upgrade to that wheel you will have to machine the center cartridge behind the compressor wheel to fit a larger 86mm exducer. It's not very hard to do but you have to do it carefully.

I am running a 44mm tial wastegate, tried every spring under the sun, and now have the highest springs (both blue) I believe it gives wastegate pressure of 22psi. Running a DNP t3 Manifold, and a hallman pro boost controller. 25PSI holds great to redline, I go up to 30-35psi it will have a 4-5psi drop by redline! Checked for boost leaks a million times, not a single leak!

I believe I read that the exducer on the 56mm 6 blade hx40 is 86mm

 

[Boostdriven]

I believe that 56mm wheel is 83mm on the exducer but even then should have no problem keeping 30 psi.

What exhaust housing u have and what is your red line? What size exhaust do you have?

 

[pj91gsx]

BAE is "okay", but don't be surprised if they don't ship you anything after your purchase, dont respond to your email, and you have to get a paypal refund. Also, plan on 2 weeks for shipping. I haven't bought from them in about a year now, i only buy from them if its a last resort, if i cant find the part anywhere else. Im running one of their hx35/40 10 blade turbines in my car 60mm x 70mm.

For the price they want for their compressor wheels you could spend a little more and get a billet wheel. Or you could even step it up to the 66mm compressor wheel. I did see the one members post on here that made just below 700 hp on an untouched hx40 which is really impressive. As for wheel this compressor wheel will do I expect it to be close the the 6765, because thats what the measurments of the compressor wheel mimic. Its also extended tip too. I went with the rare h1e 67 x 76 turbine, Im still trying to find 2 for customers turbos. This compressor wheel measures 66.56 x 84 x 86.62. Im hoping Justin will be the first to get some results, the local dsm crowd around here has seemed to nearly vanish.

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[JusMX141]

I went with the rare h1e 67 x 76 turbine, Im still trying to find 2 for customers turbos. This compressor wheel measures 66.56 x 84 x 86.62.

As did I...I picked up a brand new Genuine takeoff 76/67 turbine for $60 on eBay, so I'll have to get a turbine housing machined to work. The inducer tip of the 76/67 turbine is about 2mm wider than the 76/64 turbine as well, so it should flow a TON of exhaust and support the compressor upgrade nicely.

We're hoping this will be Dave's final turbo upgrade and the turbo he'll stick with on the race car after pushing the junkyard 60mm 6-blade to the max in the coming months. The idea is to back off the boost a little with the 66mm turbo and settle into a happy and reliable 8-second / 160mph territory without beating the shit out of the turbo and engine to get there. He really wants a FP3794 but those things are so damn expensive....plus I'm curious how this 66mm wheel will work out in a max-power situation as I'm not sure if some of these companies really do a ton of R&D before producing half the wheels that are out there.

If everything goes right we should have the 66mm turbo on mid-summer and possibly for the Shootout unless Dave decides be wants to go with a stock-appearing turbo to run in the stock turbo class at the Shootout.

 

[rr06rs]

So what 66mm wheel are you guys using? The Pure Turbo pieces?