Machining BEP .70 a/r housing to fit HX52

[Boostdriven]

I'm thinking that this is a success on your part, and a testament to the design of the 52's turbine.

However, looking at the rise in drive pressure/boost as rpm climbs has me anxious to see what work on the wastegate will yield.

My inclination tells me that any significant increase boost or rpm would show an advantage to the stock housing however. Though only one way to know for sure, even then it could simply be a function of changing cam timing or wastegating. These things are very much setup specific.

I should have plenty of data on my 16cm2 hot side before this month is out. Sorting out clutch issues is holding me up.

I think regardless to what I do to the wastegate spring the drive pressure will not change at a given rpm per boost required. If I'm calling for 35psi of boost then the drive pressure will still be at 28psi at 8000 rpms. Now the boost creep should be fixed with the new spring cause the wastegate will be able to bypass more exhaust therefore keeping the boost more steady. Going to the 3.5" exhaust should help reduce the drive pressure since the pressure in the exhaust after the turbo should be lower.

How much injector is it using? I moved 67lbs/min based on fuel consumption and power.

E85 is a bit different then 92 pump gas. With his 1150cc injectors at 8000 rpms and 35psi of boost duty cycle was about 84% but keep in mind though, he has 4-315cc nozzles for water/meth, one in each runner of the intake manifold. In my experience that much water/meth will drop your air/fuel ratios about a point, from 12.5 to 11.5 and that fuel is not being calculated in to the equation by the ECMlink.

 

[dsmcurse]

tomorrow morning we hit the brand new mustang dyno at CBC.

 

[Miasma]

tomorrow morning we hit the brand new mustang dyno at CBC.

Can't wait to see the dyno sheet.

 

[dsmcurse]

Ya, boostdriven and I both got fingers crossed to clear 600awhp on pump gas and NO nitrous

 

[Archer Fabrications]

Thats pretty awesome,
Let me know how it spools, i have an hx40 .70 AR bolted on my dsm right now and an hx52 in pieces awaiting rebuild kit

 

[talondave]

Looks bad ass, nice work. If you need someone to test that bad boy out at the track, send it my way!

 

[dsmcurse]

its obviously not quite as quick on its toes as the 40 was, but the trade off in power was easily worth loosing a bit of spool.

the 52 pulls so super-duper hard up top, and when you bang to the next gear its still way within its sweet-spot power-band.

so far no regrets at all

 

[Archer Fabrications]

Yeah cause its fuquin huge
Look at the compressor of the 52

You must be logged in to view this image or video.

 

[dsmcurse]

urbansmoker, if you go with a 52, id deffinatley consider swapping to a smaller exhaust housing. the factory semi truck housing will work, BUT, theres better solutions out there

 

[Archer Fabrications]

Indont have a ts t4, i do however have an stm t3 manifold!

 

[LandSpeed-DSM]

urbansmoker, if you go with a 52, id deffinatley consider swapping to a smaller exhaust housing. the factory semi truck housing will work, BUT, theres better solutions out there

Well that has not been determined yet, what you wish to do with yours may call for a different turbine housing than what I wish to do with mine.

Lets avoid generalities.

Looks bad ass, nice work. If you need someone to test that bad boy out at the track, send it my way!

Also, please take ^this guy^ up on that offer.

 

[JusMX141]

Ya, boostdriven and I both got fingers crossed to clear 600awhp on pump gas and NO nitrous

You don't need a HX52 for that.

http://www.dsmtuners.com/forums/dyno-talk/456055-hx40-pump-gas-stock-ecu-sd-conv.html


Sorry, I had to....you just made it too easy.

Looks bad ass, nice work. If you need someone to test that bad boy out at the track, send it my way!

Dave, your next turbo's hopefully going to be done in about a month. No need to go to a HX52 quite yet.

 

[Archer Fabrications]

Whats he switching to? Dave isnt stickin with the hx40 love?

 

[dsmcurse]

You don't need a HX52 for that.

http://www.dsmtuners.com/forums/dyno-talk/456055-hx40-pump-gas-stock-ecu-sd-conv.html


Sorry, I had to....you just made it too easy.

were shootin for big power with a turbo thats not gonna have to work so hard, HX40 would be kinda high-strung for that power everyday everyday.

this aint set in stone but i think 600 hp on hx40 you would need 40psi boost. 600 hp on the hx52 only require 30psi boost.

of course this is all in the learning curve and experimental phase.

we dyno in about 2 hours, wish us luck

 

[LandSpeed-DSM]

were shootin for big power with a turbo thats not gonna have to work so hard, HX40 would be kinda high-strung for that power everyday everyday.

this aint set in stone but i think 600 hp on hx40 you would need 40psi boost. 600 hp on the hx52 only require 30psi boost.

of course this is all in the learning curve and experimental phase.

we dyno in about 2 hours, wish us luck

Of the guys who have put up numbers at or approaching 30PSI boost on the manual trans with an HX52 most are in the mid 600s - low 700s.

With at least one in the low 800s at less than 40psi.

Highest outlier was ~770awhp @ 30psi boost.

Good Luck!

 

[Boostdriven]

Just got back from the dyno, I started a new thread in (dyno talk) I think tristen is going to post his results here since this thread was about his turbo. He might start a new thread as well, I don't know but I'll let him post his results

My thread.
http://www.dsmtuners.com/forums/dyn...gas-hx52-19cm-hx40-housing.html#post153259451

 

[ceedawg]

Just got back from the dyno, I started a new thread in (dyno talk) I think tristen is going to post his results here since this thread was about his turbo. He might start a new thread as well, I don't know but I'll let him post his results

My thread.
http://www.dsmtuners.com/forums/dyn...gas-hx52-19cm-hx40-housing.html#post153259451

Keep posting brother!

 

[dsmcurse]

heres my dyno pics

 

[Boostdriven]

Looks bad ass, nice work. If you need someone to test that bad boy out at the track, send it my way!

Thanks man. If only I had that machine at my house I would build a housing every week I've recently became friends with the guy (Antony) who works at a machine shop so he made some of these housings possible for me. Before I met Antony I went to a few different shops here in town and they all told me that they didn't really want to attempt something like that. Here is the shitty thing, Antony is moving to another state here in about a month so I'm out of luck for these housings. I'll try to talk to the head guy at his machine shop and see if they will let me use their machine, I would just pay them for the machine use. Not likely that its going to happen but I have my fingers crossed.

It would be cool to see what it could do on your car considering you're in to low 9s with the HX40. You can pick up an HX52 and rebuild it for about $300-$350 dollars. This last one I bought for tristen didn't even need to be rebuilt, that thing looked like it had less then 50k miles on it. I can probably get another one in the same condition. If I was to build another one of these housings I would need to have that turbo here. I would rather not take the one off my car, its kind of a tight fit tristen has another T3 .70 housing off his HX40, he might be willing to part with it. If you are serious about this housing I will talk to Antony and see if he can find some time before he moves to help me out with one more housing, let me know and I might be able to work something out.

 

[pj91gsx]

You probably haven't seen the potential out of this turbo yet, but just for the record, I built an hy35 to an hx40 pro(billet wheel 60mm x 86mm) (64mm x 76mm turbine), and we got 78 lb per min. The hy35 has a 9cm^2 turbine housing which is close to a .63 a/r garrett housing in size. There are bigger upgrades for the hx40, including a 67mm x76 turbine shaft (10 and 12 blade) and 67 x 84mm billet compressor wheel. The thing i don't like about the hx52 is the weight of the rotating assembly, its ridiculously heavy. There is a reason why they put these turbos on a ~13 liter truck.

 

[JusMX141]

I built an hy35 to an hx40 pro(billet wheel 60mm x 86mm) (64mm x 76mm turbine), and we got 78 lb per min.

Boost level, and are you sure the airflow is accurate? Just curious because that's more than we saw with Dave's 60/86 BatMoWheel at 38psi with a factory HX40 turbine and .70 BEP housing, so both the turbine housing and turbine wheel were larger than your example.

 

[LandSpeed-DSM]

Looking at the 19cm HX40 housing dynoplot again.. that torque curve is falling off real fast and very early for a turbine wheel that size.

 

[pj91gsx]

Boost level, and are you sure the airflow is accurate? Just curious because that's more than we saw with Dave's 60/86 BatMoWheel at 38psi with a factory HX40 turbine and .70 BEP housing, so both the turbine housing and turbine wheel were larger than your example.

78 lb per min is what dsmlink recorded, it was around 40 psi. ill have to ask the guy. The rods warped shortly after unfortunately, it was on a 6 bolt block.

 

[LandSpeed-DSM]

I'd be curious to see his VE table.

 

[Boostdriven]

Looking at the 19cm HX40 housing dynoplot again.. that torque curve is falling off real fast and very early for a turbine wheel that size.

Which dyno graph are you looking at? The first trip to the dyno was successful but the second trip I broke my spool valve. On the first trip where car made 663hp/496tq I only loose about 65-70ft lbs of torque from peak at 6500 rpms to where I let off at 8400 rpms, I wouldn't say that's allot.

Looking through my log of that dyno at 8400 rpms and 37 psi of actual boost my boostest is only at 30 psi, my airflow is only at 63.5 lbs/min, my VE table at that boost lever and rpm is only at 86% if my VE table was at a 100% my airflow would have been substantially higher. If you do some simple math you can figure out roughly what the airflow should have been if the boostest was the same as actual boost. 63.5lbs/min divided by 30psi boostest = 2.117 now if you take that number and multiply it by 37psi (assuming 100% VE and boostest matches actual boost) you get the new air flow number of 78.3 lbs/min. Of course that's not 100% correct but its close enough.

I'm sure that each car uses a different VE table to make it run right so even though we all may run the same turbo and run the same boost, we all will have different airflow numbers due to different VE table values. There are few factors that go in to calculating the airflow and the one that effects it to most is your VE table. If your VE table is not at 100% and your boostest does not match the actual boost then you can pretty much completely ignore your airflow values. Personally I don't really care about the airflow numbers provided by ECMlink and here is why. If you take one car and run 2 different turbos on it like HX52 or HX35, running both turbos at 30 psi you will get the same airflow numbers in ECMlink assuming 100% VE and boostest matching actual boost in both cases. So looking at that one can say that both turbos flow the same amount of air at 30 psi but that is not true. HX52 will move more air then HX35 pretty much at any boost level.

I run allot of water/meth and that's unmetered fuel that I'm putting in to the engine so I have to compensate for it with something. Since all my fuel adjusting I do with my VE table I have to drop my VE values that low to keep my air/fuel ratios where I like them.