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Engine Specific Info and Questions => IDI Engine => Topic started by: Black Smokin' Diesel on April 17, 2007, 07:09:41 pm

Title: Question about flipping the exhaust manifold upside down
Post by: Black Smokin' Diesel on April 17, 2007, 07:09:41 pm

When you flip the manifold and clock the turbo, how does the downpipe fit afterwards? Do you have to go custom or there's a way to make it work?

Reason I want to flip it is to use an intake manifold with long runners, either 8v or custom made using an NA manifold with a big plenum. I'm not a fan of how the 8v mani looks tho.

Title: Question about flipping the exhaust manifold upside down
Post by: g-spec on April 18, 2007, 01:59:49 pm

I would think you have to fab up a new dp due to the fact that the turbo will sit a lot lower than it did before!!! you might be able to get away with just cutting out a section of your current dp!!!!
Good luck, Michal

Title: Question about flipping the exhaust manifold upside down
Post by: RabbitJockey on April 18, 2007, 03:55:54 pm

this has been talked about on the whore tex... the downpipe apparently points in all the wrong directions after you flip the turbo... so a custom one will be required.

Title: Question about flipping the exhaust manifold upside down
Post by: Black Smokin' Diesel on April 18, 2007, 05:05:08 pm

Quote from: "Trev0rbr"

this has been talked about on the whore tex... the downpipe apparently points in all the wrong directions after you flip the turbo... so a custom one will be required.

Damn! Oh well, 2.5" custom here I come :P

Title: Question about flipping the exhaust manifold upside down
Post by: Barry W on April 18, 2007, 07:27:17 pm

Why would one want to flip the manifold?

Title: Question about flipping the exhaust manifold upside down
Post by: flapjack on April 18, 2007, 09:06:19 pm

i just tried a G60 intake manifold with the flipped stock exhaust manifold and it doesn't fit. Theres a small gap, (1/4" maybe?) between the head and the manifold.  I didn't have time to  look too closely, maybe it just needs a little grinding.

Title: Question about flipping the exhaust manifold upside down
Post by: 935racer on April 18, 2007, 09:20:37 pm

You need to do a bunch of gringding on the exhaust manifold, but the biggest problem is the shift linkage, its really close to where the downpipe should be, its not impossible, but not as easy as just unbolting it and flipping it upside down, also gotta deal with the oil lines...

Title: Question about flipping the exhaust manifold upside down
Post by: Barry W on April 18, 2007, 11:14:34 pm

Good to know.  :wink:

Title: Question about flipping the exhaust manifold upside down
Post by: Black Smokin' Diesel on April 19, 2007, 02:04:20 pm

Seems like a PITA. I have a spare head and manifolds. I'll see what needs to be grinded to fit the head. About the DP, I'll have to wait for the head to be on to see how close it'll be to the shift gear.

Title: Question about flipping the exhaust manifold upside down
Post by: 935racer on April 19, 2007, 05:12:40 pm

Heres an intake manifold solution for you.

http://vwdiesel.net/phpBB/viewtopic.php?t=7676

Title: Question about flipping the exhaust manifold upside down
Post by: Black Smokin' Diesel on April 19, 2007, 07:19:49 pm

Quote from: "935racer"

Heres an intake manifold solution for you.

http://vwdiesel.net/phpBB/viewtopic.php?t=7676

Don't worry if I had the cash I'd already have ordered this, the exhaust mani and a cam :P