7 blade HX40 flow chart, map, ect

After some talking to my ricer buddies a GT3788R is a viable option if I can find 2 that are used.http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT35/GT3582R_714568_3.htm Shoving through a GT4088. The good part is that is fairly common stuff on the import scene (that means cheap used stuff).

Hmmmmmmmmmmmmmmm.

The math in my triples thread puts me to needing 140lb/min for 1k of hp. GT37's will give me 120# at best, maybe some head porting will fix that later.
 
I like that idea but the 18cm exhaust housing is just not gonna cut it.
 
roachie said:
I like that idea but the 18cm exhaust housing is just not gonna cut it.
Click to expand...

Then how about 351VEs and just fix the housings in one position??? Or have very limited travel with mechanical control :poke:

EDIT: Not to mention they are dirt cheap...
 
Ive been thinking about that too. And waiting to see if carcrafter22 can get that design I drew out to work.
 
roachie said:
Ive been thinking about that too. And waiting to see if carcrafter22 can get that design I drew out to work.
Click to expand...

Ah, your manual control design? Looks promising IMO, someone just needs to get that man a shaft speed sensor so he can get it on and running LOL
 
If it works Ill go all out using 2 HE351ve's and a 551ve.

Wanna talk about wicked? :evil


On edit:

Has the compressor map for 431 or 451 been released yet?
 
roachie said:
If it works Ill go all out using 2 HE351ve's and a 551ve.

Wanna talk about wicked? :evil


On edit:

Has the compressor map for 431 or 451 been released yet?
Click to expand...

Ooo, that does sound interesting... I still want to see if we can get a 19cm 400 series housing to fit a 551 and see if it wakes it up any :Cheer:

Not that I know of, but I honestly think the smaller housing on the 351 would suit your needs better anyway. That and the map shouldn't be that much different than the 351; only difference is in the exduder of the comp wheel (90mm vs 88mm in the 351) and the size of the turbine wheel.

The only thing I see a 400 series charger having an advantage over the 300 series is in a twins set with it's bigger housing. Unless you have one of the 451VeTi ones like mine with the titanium wheels since I don't know of any 300 series applications with a Ti wheel...
 
roachie said:
I like that idea but the 18cm exhaust housing is just not gonna cut it.
Click to expand...

I agree with the 18cm, but I wonder if two turbine wheels will flow more than a large single turbine wheel and thus lowering the needed cm exhaust housing.
 
BlackSkyRacing said:
Ooo, that does sound interesting... I still want to see if we can get a 19cm 400 series housing to fit a 551 and see if it wakes it up any :Cheer:

Not that I know of, but I honestly think the smaller housing on the 351 would suit your needs better anyway. That and the map shouldn't be that much different than the 351; only difference is in the exduder of the comp wheel (90mm vs 88mm in the 351) and the size of the turbine wheel.

The only thing I see a 400 series charger having an advantage over the 300 series is in a twins set with it's bigger housing. Unless you have one of the 451VeTi ones like mine with the titanium wheels since I don't know of any 300 series applications with a Ti wheel...
Click to expand...

What I gathered in other posts:

300 series - .46 Kg/s (~61 lbs/min) <- same as an HX35 oddly enough
400 series - .54 Kg/s (~72 lbs/min) <- slightly better than an HX40
500 series - .72 Kg/s (~95 lbs/min) <- slightly less than an HX55

Assuming that is true, the 400 series would get the air I need. Now if I could only find some Ti's.....or a 551

Big Blue24 said:
I agree with the 18cm, but I wonder if two turbine wheels will flow more than a large single turbine wheel and thus lowering the needed cm exhaust housing.
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That Im not sure on, I do know that when dealing with pipe two 1.5" pipes dont flow as much as a single 3". Id assume that holds true with the turbines.
 
roachie said:
What I gathered in other posts:

300 series - .46 Kg/s (~61 lbs/min) <- same as an HX35 oddly enough
400 series - .54 Kg/s (~72 lbs/min) <- slightly better than an HX40
500 series - .72 Kg/s (~95 lbs/min) <- slightly less than an HX55

Assuming that is true, the 400 series would get the air I need. Now if I could only find some Ti's.....or a 551
Click to expand...

Those are actually the numbers I pulled right off the cummins website... It really sucks that it really isn't a very good resource for max flow numbers, but to me they make sense.

I just wish I could build a gearbox to multiply shaft speed of an electric motor and use a local flow bench. Of course then I would have CFM numbers, but I'm sure the math isn't that complicated if temp, humidity, and atmospheric pressure were recorded when each was on the bench...

The reason I say this is I don't really see how a 60/88 wheel can flow 11lbs/min less than a 60/90 wheel :poke: Either way if it's true it doesn't bother me as I already have the better of the two (if that held true):Cheer:
 
BlackSkyRacing said:
Ooo, that does sound interesting... I still want to see if we can get a 19cm 400 series housing to fit a 551 and see if it wakes it up any :Cheer:
Click to expand...

Know where I might find one to try?? Got the 551's, need smaller housings...


To be honest If I can't wake this thing up on the bottom end more I'm ditching it and going twins...I need to be able to tow with this thing a little.
Chris
 
Has anyone emailed Holset to get compressor maps for the different series?

Maybe the pitch on the 88 an 90 is what makes the flow difference?

Im still having no luck finding what I need with turbos though.
 
Signature600 said:
Know where I might find one to try?? Got the 551's, need smaller housings...


To be honest If I can't wake this thing up on the bottom end more I'm ditching it and going twins...I need to be able to tow with this thing a little.
Chris
Click to expand...

I just sent a PM to Snedge with the numbers Atross posted up about a 431 he found with a 19cm housing... Hoping maybe a factory housing isn't too expensive, or at least help us look for a specific part number on the 431s to get it.

roachie said:
Has anyone emailed Holset to get compressor maps for the different series?

Maybe the pitch on the 88 an 90 is what makes the flow difference?

Im still having no luck finding what I need with turbos though.
Click to expand...

Not that I know of, Beagle said he had an inside line, buit that he was only going to be able to get out a few questions before being discovered. It's worth a try though.
 
roachie said:
What I gathered in other posts:

300 series - .46 Kg/s (~61 lbs/min) <- same as an HX35 oddly enough
400 series - .54 Kg/s (~72 lbs/min) <- slightly better than an HX40
500 series - .72 Kg/s (~95 lbs/min) <- slightly less than an HX55
Click to expand...

no way in hell an hx35 flows 61lb/min or a 40 flows 72lb/min.
 
BlackSkyRacing said:
I just sent a PM to Snedge with the numbers Atross posted up about a 431 he found with a 19cm housing... Hoping maybe a factory housing isn't too expensive, or at least help us look for a specific part number on the 431s to get it.
Click to expand...

Copy that...let me know what you find, Snedge has my billing info and address:evil :evil

Chris
 
I was in contact with a Holset Engineer two years ago when I first decided to put a HE351cw 04.5+ stock turbo on my truck. According to him, the 60mm x 88mm compressor wheel on the HE351 corrected to Garrett's published standards for temp and atmospheric pressure peaks at 67 lbs per minute.

Keep in mind that the HE351cw 04.5+ and HE351ve 07+ have the same compressor wheel part numbers and are fully interchangeable.

Thus, the 60 x 88 compressor is maxed out at 67 lbs per minute.

I suspect the 60x90 wheel is not going to flow much more, it's just going to be more efficient at higher pressure ratios.
 
FYI, I asked Holset for a compressor map and was told it is proprietary information and is not for public use or viewing. I was allowed to ask a few questions but that's it.
 
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