Compound turbo or Bi-turbo set ups - page 3 - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.
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#30 by Smokey Eddy on 25 Jan, 2010 13:18
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Anyone know the rough specs of "Dave's" build?
i think his screen name was 953 racer or something...
apparently he did it right somehow -
#31 by Kantdrivefast on 25 Jan, 2010 14:59
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Anyone know the rough specs of "Dave's" build?
i think his screen name was 953 racer or something...
apparently he did it right somehow
AFAIK he did it on one turbo...
edit: http://www.vwdiesel.net/forum/index.php?topic=11698.30
Theres his build ed -
#32 by Smokey Eddy on 25 Jan, 2010 15:25
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oh cheers man
yeah he used a t3/t4 -
#33 by TurboJ on 26 Jan, 2010 10:06
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Why don't you give us the dimensions of that Holset, that should gave some clue to how it would work.
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#34 by Smokey Eddy on 26 Jan, 2010 11:37
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I figured the part no. would tell us that but alright i'll try... what dimensions are you looking for? the compressor wheel? (the blades in the picture?)
I think its 9cm across (diameter) but im at work right now. I'll clean it up some today at 8:00 after dinner, take some pictures, measurements and the like.
You want how tall the wheel is? the width of the inlet housing? Gimme some qualitative and i'll get you the quantitative. -
#35 by smokin_fun on 26 Jan, 2010 13:29
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sounds like a great turbo to make a pulse jet!
http://www.instructables.com/id/How-to-build-your-own-Jet-Engine/
get a couple of those on the back and light em up for your cruise through the valley! -
#36 by TurboJ on 26 Jan, 2010 14:14
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I figured the part no. would tell us that but alright i'll try... what dimensions are you looking for? the compressor wheel? (the blades in the picture?)
I think its 9cm across (diameter) but im at work right now. I'll clean it up some today at 8:00 after dinner, take some pictures, measurements and the like.
You want how tall the wheel is? the width of the inlet housing? Gimme some qualitative and i'll get you the quantitative.
Both diameters of both wheels, but even just compressor intake and exhaust exducer diameters would tell a lot. And if you also know the turbine A/R, that's all we need
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#37 by Smokey Eddy on 26 Jan, 2010 14:26
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ok!
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#38 by Smokey Eddy on 26 Jan, 2010 14:32
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http://www.d-series.org/forums/forced-induction/120686-holset-turbo-specs-hy-hx-h1c-wh1c-h1e-wh1e.htmlQuote
HX35:
The 8blade hx35 has a 56mm compressor inducer. This is found on 1995-1998 cummins manual pickups. The compressor flows 52 lb/min according to the compressor map. The bolton BEP housing (0.55 a/r) is enough to push the limit of the compressor. There's several 500whp 8blade hx35 cars out there with the bolt on housing. It reaches 20+psi by 3500rpms in 3rd with 272 cams. Smaller cams would equal a faster spool speed in most cases.
The 7blade hx35 has a 56mm compressor inducer. Mine is the 7 blade This is found on the 1999-2002 cummins manual pickups. The compressor flows 60lb/min according to the compressor map and logged results from a member here. The bolton BEP housing with the hx35 turbine wheel do not SEAM to have enough flow to really reach the potential of 60lb/min. But many have logged over 50lb/min so far and seen 500whp. The stock hx35 12cm^2 twinscroll turbine housing is a t3 flange housing. This mated to a NON-divided runner manifold has produced a 132mph trap speed with a full weight 1g AWD. This is about 600whp. So the flow is there with the stock housing if you use a non-divided manifold. The spool speed of the 7blade hx35 is similar to the 8blade hx35 with 20+ psi by 3500rpms in the bolton housing and by 4000rpms with the stock housing with a non-divided manifold.
HY35:
The hy35 has a smaller turbine wheel than the hx35. And, it has a turbine housing connection that does not allow for a bolton housing to be used. It does not have a divided housing so any t3 manifold can be used effectively with this turbo. It has the same compressor as the 7blade hx35. We don't know if te hy35 turbine wheel and housing is enough to reache the 60lb/min potential of the 56mm 7blade compressor. Some one try it out already!!! It should at least be a faster spooling viable option to the full t3/t4 50-trim.
Map of the HX35
HX35 comparrison to the HY35 (the HX is the bigger of the two with the divided exhaust port)
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#39 by RabbitJockey on 26 Jan, 2010 16:50
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daves engine:
stock block, ported head, his dual plenum manifold, one of those ebay cast exhaust manifolds, giles pump, 3" exhaust, 350hp intercooler. t3/t04e with .63 a/r exhaust turbine. i think up to 35 psi. he revved it to 6 grand too. i think you could use this turbo but it's going to be slow spooling, but since you have the split exhaust inlet you could buy one of the quick spool valves which closes off half of the exhaust turbine, cutting your a/r in half until higher pressures. we were discussing this last week. -
#40 by Smokey Eddy on 26 Jan, 2010 16:59
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Oh cool, any examples?
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#41 by RabbitJockey on 26 Jan, 2010 17:06
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#42 by Rabbit on Roids on 27 Jan, 2010 10:35
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if you spend 500 dollars on a valve to spool that turbo, im gonna come slap you...
those things are about 5 prices too expensive. -
#43 by RabbitJockey on 27 Jan, 2010 13:38
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#44 by RabbitJockey on 27 Jan, 2010 14:01
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also, here is a nice little read for you. its from before dave built his car but his turbo sizing is discussed here along with a few other people. i can't believe i've been into this stuff this long haha
http://www.vwdiesel.net/forum/index.php?topic=2434.45