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Engine Specific Info and Questions => TDI Engine -General Info => Topic started by: lucasone on April 28, 2009, 09:14:50 pm

Title: twin turbo MTDI
Post by: lucasone on April 28, 2009, 09:14:50 pm

Has anybody successfully built a twin turbo MTDI? if so, what turbo were used for the primary and secondary? I have converted my TDI(AHU) to a twin turbo with some turbos I had at my shop(GT15) (TD05) and it works well but my secondary turbo is too small and my EGT will hit 1350 F. by the time I hit 110kph.
I am using a 12mm giles pump and running 30PSI of boost. I am ready to fabricate a more effient exhaust manifold because I am currently using the stock manifold and turbo(GT15) until I know what turbo will work better.

Any feedback would be greatly appreciated,

Thanks

Title: twin turbo MTDI
Post by: rallydiesel on April 29, 2009, 05:32:39 am

I think you are one of the few and maybe the only one on this side of the pond. Could you post some pics of your set-up? Do you have an external waste-gate? Ported? What are you running for a headgasket/headstuds?

Welcome to the site!

Title: twin turbo MTDI
Post by: lord_verminaard on April 29, 2009, 06:46:02 am

Wow, that's a hell of a first post.  :)  Got any pics of your setup?  I'd love to see it!

Brendan

Title: twin turbo MTDI
Post by: andy2 on April 29, 2009, 04:07:12 pm

I have a running TDI-M with compound turbos.I don't know how to read compressor maps etc..but have eventually come up with a working system after 4+ years of testing.

Depends on how much boost you are looking for?What compressor  inducer size is the the primary turbo?

Title: twin turbo MTDI
Post by: lucasone on April 29, 2009, 07:18:11 pm

Hey guys. I am using ARP studs with a 3 hole head gask. I keep the boost to a max of 30psi, tried 40psi once and blew the head gask. I ported the exhaust, but only cleaned up the intake ports (didn't want to loose the swirl effect) and I am using an external waste gate. I will send some pictures.
I don't know what size my primary inducer is but I will find out.
What turbos are you using, and what are the pros and cons to your set up?
Thank for your response.

Title: twin turbo MTDI
Post by: andy2 on May 02, 2009, 07:02:33 am

PM sent.I'll start a new thread pretty soon and post some pics as well.

Title: Twin Turbo M-TDI
Post by: Giles@PerformanceDiesel on May 07, 2009, 06:56:38 pm

Hey guys

i have been working with a guy called Devor from Precision Auto
in Kelowna, BC and he has built a Twin turbo M-TDI in a mrk 3 jetta.

he's using an early TDI non vnt turbo and i'm not sure what the
bigger one is though.

he had an impromptu race with a Porsche turbo ceyenne and
kept up no problem. he's getting a dyno done soon

Giles

Title: twin turbo MTDI
Post by: Spulen81 on May 08, 2009, 05:54:29 am

Anxiously awaiting more compound turbo threads!

Title: Re: Twin Turbo M-TDI
Post by: malone on May 22, 2009, 08:47:02 am

Quote from: Giles@PerformanceDiesel on May 07, 2009, 06:56:38 pm

Hey guys

i have been working with a guy called Devor from Precision Auto
in Kelowna, BC and he has built a Twin turbo M-TDI in a mrk 3 jetta.

he's using an early TDI non vnt turbo and i'm not sure what the
bigger one is though.

he had an impromptu race with a Porsche turbo ceyenne and
kept up no problem. he's getting a dyno done soon

Giles

That's awesome.. gonna keep an eye out for this one :)

Looking forward to andy2's update too.

Title: Re: twin turbo MTDI
Post by: macka on June 07, 2009, 06:47:25 am

bump.......updates?