Author Topic: Holset VNT turbo  (Read 17545 times)

Reply #30August 19, 2014, 12:12:38 pm

TimpanogosSlim

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    Pretty dumb for a smart guy
Re: Holset VNT turbo
« Reply #30 on: August 19, 2014, 12:12:38 pm »
fwiw i think it's not that VNTs don't perform well on the big cummins, it's that the vanes get stuck, and THEN they don't perform well

Reply #31October 26, 2014, 05:11:11 pm

pajamas

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Re: Holset VNT turbo
« Reply #31 on: October 26, 2014, 05:11:11 pm »
I don't know if anyone is considering doing this, but be trust me, it needs to be compounded with a smaller turbo to even have a chance being fairly drivable. It might work well if drag racing is the cars' only purpose. You can close the vanes so far that it lowers the volumetric efficiency enough that it won't rev, but it's still miserably slow to spool.


Newb account won't let me link to the full size picture :-/ Probably for a good reason.
http://i (dot) imgur.com/zteqR9p.jpg
The only kind of decisions I make are bad ones.

Reply #32October 26, 2014, 05:26:00 pm

RabbitJockey

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Re: Holset VNT turbo
« Reply #32 on: October 26, 2014, 05:26:00 pm »
I don't know if anyone is considering doing this, but be trust me, it needs to be compounded with a smaller turbo to even have a chance being fairly drivable. It might work well if drag racing is the cars' only purpose. You can close the vanes so far that it lowers the volumetric efficiency enough that it won't rev, but it's still miserably slow to spool.


Newb account won't let me link to the full size picture :-/ Probably for a good reason.
http://i (dot) imgur.com/zteqR9p.jpg

what car and engine is this?


and yes, this turbo is absolutely too big except for in a compound setup
01 Jetta TDI 100% stock daily
81 Rabbit:TDI-M ported head, Frank06 cam, PD intake, hybrid T3 turbo, Renault intercooler, Syl20 11mm pump, light weight fw, and yellow California Clutch clutch kit

Reply #33October 26, 2014, 05:59:43 pm

pajamas

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Re: Holset VNT turbo
« Reply #33 on: October 26, 2014, 05:59:43 pm »
what car and engine is this?
The car is an AMC, and the engine is, well... a 1.6d ME TDI?

Are they considered direct injected after you gut the throttles in the head, ...

and adapt new injectors into them?


I don't really wanna hijack this guy's thread even though it's ancient, but I have an idea of how to spool it without compounding it. It just take time. Well time to make money, a fair sum of money. :-(
 
The only kind of decisions I make are bad ones.

Reply #34October 26, 2014, 06:37:46 pm

RabbitJockey

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Re: Holset VNT turbo
« Reply #34 on: October 26, 2014, 06:37:46 pm »
what car and engine is this?
The car is an AMC, and the engine is, well... a 1.6d ME TDI?

Are they considered direct injected after you gut the throttles in the head, ...

and adapt new injectors into them?



I don't really wanna hijack this guy's thread even though it's ancient, but I have an idea of how to spool it without compounding it. It just take time. Well time to make money, a fair sum of money. :-(


please make a thread detailing your build, that car is very very interesting
« Last Edit: October 27, 2014, 05:26:47 am by RabbitJockey »
01 Jetta TDI 100% stock daily
81 Rabbit:TDI-M ported head, Frank06 cam, PD intake, hybrid T3 turbo, Renault intercooler, Syl20 11mm pump, light weight fw, and yellow California Clutch clutch kit

Reply #35October 26, 2014, 08:22:31 pm

libbydiesel

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Re: Holset VNT turbo
« Reply #35 on: October 26, 2014, 08:22:31 pm »
I agree.  I want to see more.