Compound turbo or Bi-turbo set ups

[Smokey Eddy]

foxracer1, im pretty sure it's going to be too big also. Sigh.
oh well. see how it goes. It's all just for fun.
 im going to learn Auto CAD and some metal fab skills so im not going to be too upset if it doesn't work.

[truckinwagen]

autocad will serve you well in the future.
do you have a copy of it?
the copy I bought four years ago was by far the best $400 I have ever spent on school.

[Smokey Eddy]

I got a copy for free and the drafters at work have tons of manuals on it. they're also helping me well the two young guys anyways

[RabbitJockey]

i think it will work, daves car didn't fully spool till around 4-4500.plus u still get the spool of the stock t3 which many people say is too big but i think not.  not that i have much experience with it, but they spool pretty quick on a modded td, i mean i could always hit 25 psi way before stock red line, and you're going to need to rev far beyond the redline to make good power and make the hx usable in any practicle way

[Rabbit on Roids]

4500 or so is when it will come on? no thanks... im almost ready to shift by then. i dont want my low pressure turbo to JUST be coming on at that point.

*pssst*..... hey... ED!
i know how you could spool it before 4500...
give your car a shot of laughing gas. the cummins guys use nitrous as a crutch when the turbos are too big. and besides, who else is running nitrous on the board?

[Smokey Eddy]

yes, nitrous is an option.
if im going 70km/hr on 195/65/r15's in 2nd gear what rpm is my engine at?

my jetta is a '90 4dr; Had wolfsberg emblems on the front fenders (dunno if that means its a wolfsberg)

[8v-of-fury]

You do not know your tranny code?

is it screaming doing 100 in fifth or just crusin?

seems 90's diesel only came with 2 trans..

AGS (86-90 1.6 Diesel)    3.94    3.45    1.94    1.29    0.91    0.75
AWY ('90 Diesel)            3.94    3.45    1.94    1.44    1.13    0.89

But both and most 020's have the same gearing for 2nd fear 1.94 or 2.12 few variations.. but they came on 4 speeds and other cars.. not 90 jetta's   ACCORDING TO THIS NIFTY WEBSITE; http://www.scirocco.org/gears/

you will do 4660RPM doing 70 in 2nd gear

[Smokey Eddy]

oh so i have lots to go.
it sounds really cool after 4,500, kinds scary though..

definately not screaming at 100.... after 110 it actually builds boost and will take me to 160 quick.

[Smokey Eddy]

My whole reasoning behind the holset idea is that it will only cost me time because i got the holset for free.
The advantages would be:
- I lean Auto CAD
- I practice some metal fab
- And maybe it will actually work

The Disadvantages would be:
- I spend a lot of time making something that doesn't do anything
- I spend a few bucks on pipe and oil lines that I won't need if it doesn't work

[Rabbit on Roids]

god, the whole MPH to KM difference really confuses me sometimes. i looked up and saw...

definately not screaming at 100.... after 110 it actually builds boost and will take me to 160 quick.

i was thinking... "HOLY SH**... his car goes 160?!?!! i guess my rabbit isnt that fast after all" but then i remembered your canadian. the fastest ive ever had my rabbit going was around 135 mph on a decent straight stretch. who knows how many rpm it was, but it was screaming. about ready for take off if you ask me...

160 is close to 100 mph or something isnt it?

[Smokey Eddy]

Hahahahhahaha!
Yupp that's exactly 100mph.
I dunno how fast my car will go. I haven't tried yet.
My wheels are unbalanced so i don't like to go much over 140 usually.

[Rabbit on Roids]

i cant wait to re-do my pump. and plumb up my K24.

[RabbitJockey]

compound+spoolvalve u should have no trouble

[Smokey Eddy]

compound+spoolvalve u should have no trouble

That's what i think too. The valve is a must though. or else nothing is going to happen.
I also need to increase the fueling somehow. I can't afford a Gilles Pump. (not even close)

[OM617]

people use these on civics...

Civics flow more air than any VW diesel.

the high pressure wastegate opens and the high pressure turbo effectively freewheels.

Thats not how compounds work, they share the load of compressing the air. If you feed 15psi into the high pressure turbo, the HP turbo will multiply that by whatever ratio its set to produce.
What you're describing is a sequential system where the LP turbo completely takes over. That would require a bypass on the inlet side to equalize pressure on both sides of the small turbo's compressor and a large wastegate to flow the exhaust around the turbine.