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Engine Specific Info and Questions => IDI Engine => Topic started by: smokin_fun on January 07, 2011, 11:11:52 am

Title: V8 diesel from an Audi 3.6/4.2 ?
Post by: smokin_fun on January 07, 2011, 11:11:52 am

In the summer I picked up a 91 audi V8 for my mother. It was immaculate and very well priced. And goes like hell!

After doing some research into the Audi v8 I found out it was essentially two vw 1,8 16v's put together.

This got me thinking of the dark side.

Is it possible to convert one of the 3.6's or even 4.2 to td by swapping the heads off of a aaz or 1.6 td, pistons, and some fancy crank work (not to mention plumbing, timing....etc).

I have seen these motors making HUGE power, but could they take the abuse of running a relatively low compression (16.5-18:1) twin turbo diesel setup.?

Title: Re: V8 diesel from an Audi 3.6/4.2 ?
Post by: R.O.R-2.0 on January 07, 2011, 11:32:09 am

why not use the V8 TDI?

350 HP V8 TDI marine engine. (http://www.vw-m.de/index.php?id=471&L=1)

thats the marine version, but they gotta make a normal version if they make a marine version.

heres some technical info, bore, stroke, all the fun stuff.. surprise surprise, it has a VNT on it..

V8 TDI Tech Info (http://www.vw-m.de/index.php?id=474&L=1)

Title: Re: V8 diesel from an Audi 3.6/4.2 ?
Post by: jaysen71581 on January 07, 2011, 12:22:04 pm

VW Marine !!!! OMG !!!!!!  ::)
Daddy needs a new boat motor !!!!

Title: Re: V8 diesel from an Audi 3.6/4.2 ?
Post by: R.O.R-2.0 on January 07, 2011, 12:26:13 pm

Quote from: jaysen71581 on January 07, 2011, 12:22:04 pm

VW Marine !!!! OMG !!!!!!  ::)
Daddy needs a new boat motor !!!!

my thoughts exactly, when i first saw VW marine..

Title: Re: V8 diesel from an Audi 3.6/4.2 ?
Post by: MJF on January 07, 2011, 12:37:08 pm

-00-01 Audi A8 had 3,3 V8 TDI from factory. 4-valve heads, twin-vnt's, commonrail...

Title: Re: V8 diesel from an Audi 3.6/4.2 ?
Post by: R.O.R-2.0 on January 07, 2011, 01:00:23 pm

a 3.3 tdi?

Title: Re: V8 diesel from an Audi 3.6/4.2 ?
Post by: MJF on January 07, 2011, 01:14:54 pm

http://www.audiworld.com/news/00/a80709/content.shtml

Title: Re: V8 diesel from an Audi 3.6/4.2 ?
Post by: mystery3 on January 07, 2011, 05:14:22 pm

Why not use the v10 from a toureg?

Title: Re: V8 diesel from an Audi 3.6/4.2 ?
Post by: R.O.R-2.0 on January 08, 2011, 09:25:54 am

its probably MUCH more expensive than a V8 TDI..

Title: Re: V8 diesel from an Audi 3.6/4.2 ?
Post by: VW Smokr on January 08, 2011, 02:58:06 pm

Informative Audi self-training manual on the 4.2L TDI   http://www.volkspage.net/technik/ssp/ssp/SSP_365.pdf

Sounds like a great engine for an A8, a Vanagon, or a total sleeper VW Quantum Syncro wagon!

J.R.
SoCal