Need info on Holset turbos...
SSU'S Vice Mod
Joined: Jul 2004
Posts: 2,391
Likes: 0
From: Hazard Co. Maryland
Originally Posted by MrDude_1
an HT80 can flow enough air on a gas motor to support over 1200hp.
but with a 350-400ci v8, it'll be slow to spool that high.
the problem with most holsets on gas V8, is that they LIKE high pressures.. they're more efficent at pushing volume at high pressure then at lower pressures.. donno how that works, but it fits with everything ive read/seen.
i have a few holsets myself... without getting into it, brand new cummins turbodiesel engines are brought into a local plant a friend works at.. they convert these land diesels for marine use... and replace the holset on the brand new motor with a diffrent one.
they then scrap the turbos.... most of them are FAR too large to keep, but i have a few HX35s, HX40 going on my car, couple 55s, ect.....
but with a 350-400ci v8, it'll be slow to spool that high.
the problem with most holsets on gas V8, is that they LIKE high pressures.. they're more efficent at pushing volume at high pressure then at lower pressures.. donno how that works, but it fits with everything ive read/seen.
i have a few holsets myself... without getting into it, brand new cummins turbodiesel engines are brought into a local plant a friend works at.. they convert these land diesels for marine use... and replace the holset on the brand new motor with a diffrent one.
they then scrap the turbos.... most of them are FAR too large to keep, but i have a few HX35s, HX40 going on my car, couple 55s, ect.....
I think part of that is that you don't have to worry about heating up the intake charge as much on a diesel and running a higher pressure ratio actually helps them retain heat. Obviously the compression ignition and they run better when hot (to a point), it makes more sense. I don't know why I didn't think about that myself as I have seen some of the compressor maps for the HX35s, 40s and 55s. I'll say this, their HY-55 VGT stuff is impressive, and last I read they were figuring out ways to cast Ti for their exhaust wheels.
When I researched the HX35s a while back, I hopped over on the diesel registery boards and asked, and got a few things back from those guys. One, they don't run BOVs, unless they are in an extreme race duty. The big boys often run upwards of 40#s
Very impressive, nonetheless. Ok, after some looking around, the HT80 looks to be in the range of a 76 to 85mm wheel. Which means the compressor side is more then adequate for high hp. The BIG problem is the sheer size of the turbine wheel. Just way to big to spin with anything less then a big block. Also that isn't the biggest, their is a HT100 which looks to be a good bit larger then the HT80....must weigh a ton.
Jose
Jose
thats what it sounds like... don't spend all the time and trouble fitting a huge turbo in your car designing everythign around it when you find out later it won't work with your setup... it'd be a shame.
I know we could 'what if' this to death, but I was thinking maybe a 408ish with about 10:1 compression, forged of course, running 10-12 psi on a pump-gas tune, and BIG boost (18+) on a race fuel tune. I realize cylinder pressures would be getting up there, but with a turbo the size we are talking about, I theoretically should be able to run larger boost numbers with a lower IAT readout. I dunno, maybe I'm just dreaming. Armageddon, you're right, it would be a huge pain in the *** to fit this damn thing and have it not work. But think of how much room you would have for the next turbo. I would've already blazed the trail. J/K
Teching In
Joined: Sep 2005
Posts: 1
Likes: 0
From: Iowa
Originally Posted by Sandmann120
It was a land vehicle. About 750 HP, give or take. I have a crank and a cam from one also, I think they should make pretty cool looking bar stools. Just don't tip them over.
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Launching!
Joined: Sep 2005
Posts: 232
Likes: 0
Originally Posted by JZ 97 SS 1500
Here are some cool videos......
Turbine tractor....
Right click and save as...
Here is a alky powered compound turbo tractor....
Right click and save as
Jose
Turbine tractor....
Right click and save as...
Here is a alky powered compound turbo tractor....
Right click and save as
Jose
after much searching, ive stumbled across some compressor maps for some holset HX40s..... since they're so hard to find, i thought id share.
they are PDF files, so i cant attach them.. if you want them, save them while you can. spread them around, share the wealth, ect....
http://66.83.134.202/travis/Holset%2...X40-B8554M.pdf
http://66.83.134.202/travis/Holset%2...X40-B8574M.pdf
http://66.83.134.202/travis/Holset%2...X40-B8584M.pdf
there ya are! have fun.
mods: since im not asking a question, but sharing info, if theres a better location for this thread, please move it.
they are PDF files, so i cant attach them.. if you want them, save them while you can. spread them around, share the wealth, ect....
http://66.83.134.202/travis/Holset%2...X40-B8554M.pdf
http://66.83.134.202/travis/Holset%2...X40-B8574M.pdf
http://66.83.134.202/travis/Holset%2...X40-B8584M.pdf
there ya are! have fun.
mods: since im not asking a question, but sharing info, if theres a better location for this thread, please move it.
