Marc's 1990 4.2L V8 Twin Turbo Coupe Quattro

maytagman · Post by **maytagman** » Fri Oct 13, 2006 9:45 am

:jawdrop:

Post by **Marc** » Fri Oct 13, 2006 3:42 pm

couple of updates from today.

I installed the power steering pump now that I've got the line I need. I still need to wire up the electric circuit for it tho.

I also connected up the brake lines post ABS delete. This required a new line to be run to the left front wheel because the line was too short to reach the master cylinder. I stole one of the connector lines off the ABS module and came up with something that fit decent:

Heater core lines are all set, as Nate suggested I was able to use most of the factory hoses and get everything to hook up:

I decided to remove quite a bit of the factory wiring when I realized I was going to have to re-do the alternator wiring anyway, plus run relays for my RS2 lights. It will just be cleaner to run new wiring. I also removed the now unneded ABS wiring:

So now _most_ of the coolant system is connected up, next step tomorrow will be to pressure test the whole system and make sure everything is leak free :woowoo:

3bAudios · Post by **3bAudios** » Fri Oct 13, 2006 6:22 pm

damn marc.....just damn.....i cant imagine how fast you'll get stuff done if you get your own place and your 'dream garage'

Post by **Marc** » Sun Oct 29, 2006 8:06 pm

lil more progress on the coupe today.

Plumbed up the crankcase breather setup, the drain for the catch can t's into the oil drain line for the passenger side turbo:

And I saw the v8 engine cover over in the corner of the shop and thought to myself, self, it would be nice to have that bad boy proudly displayed on the top of my motor. A few passes with the grinder later, et voila

I think I should stick an audi turbo badge on there somewhere too 8-)

3bAudios · Post by **3bAudios** » Mon Oct 30, 2006 6:05 am

Looks great marc

Jretal · Post by **Jretal** » Mon Oct 30, 2006 7:59 am

looks awesome marc!

BTW, question for ya... what material did you use to mount the battery posts in the engine bay? that just angle iron? if so, what size?

Post by **Marc** » Mon Oct 30, 2006 8:02 am

Jretal wrote:looks awesome marc!

BTW, question for ya... what material did you use to mount the battery posts in the engine bay? that just angle iron? if so, what size?

just steel angle iron welded to the firewall. Cant remember the exact size but somewhere in the neighborhood of 2" x 1/16" thickness?

Jretal · Post by **Jretal** » Mon Oct 30, 2006 8:11 am

a4kquattro wrote:
Jretal wrote:looks awesome marc!

BTW, question for ya... what material did you use to mount the battery posts in the engine bay? that just angle iron? if so, what size?

just steel angle iron welded to the firewall. Cant remember the exact size but somewhere in the neighborhood of 2" x 1/16" thickness?

cool, thanks. I picked up those posts off ebay for a song and am going to use them on my 4k turbo project, but wasn't sure what size material to use, or if I should just bend up some sheet metal. Also gotta find something to cut the 1.25" hole in the metal as well, so the post base can go through it!

JShadzi · Post by **JShadzi** » Mon Oct 30, 2006 8:22 am

Marc, coming along nicely! :thumbsup:

Post by **Marc** » Sat Nov 11, 2006 7:04 pm

progress update!

spent a little time at the shop this weekend..

made a new bracket for the power steering resevoir, 4kq spec (along with the rack)

plugged a few ports on the throttle body flange, this one was used by the crank case breather system which I'm not using (catch can setup), the other for the factory IAT.. unfortunately there isn't enough room for the 1.8t sensor in that location due to the ISV:

ran wiring for the radiator.. while testing for polarity vs. flow direction I hooked it up to my jump pack and I can say without a doubt this bad boy has some kick!

routed new rs2 headlight wiring

ran vacuum lines for brake booster, ecu, etc

I really like that new vacuum tubing stuff, much nicer than using rubber hose with hose tees all over the place

routed new wiring for the alternator (mounted on the opposite side of the motor from the 7A). Taylor firesleeve since it has to go near the passenger side downpipe, nice stuff :thumbsup:

rubber clamps to keep things out of the way of the downpipe (the stainless braided line is the drain for the catch can):

Question for those 'in the know' on the v8s, where does this rubber line normally connect to? (the one toward the right headed toward the bottom of the photo):

just trying to determine if its part of the crankcase ventilation system or if it is a post-throttle-body port..

And lastly, it almost feels like a bit of a milestone, time for coolant 8-)

and one 'unplanned' thing from this weekend.. came to the shop in the morning to find a fiddle sticking cracked winshield :curses:

thankfully, on a whim, Peter contacted me about a month ago with the chance to buy one of the last available OE CQ windshields for a killer price and I jumped on it. Guess I'm glad I did! Thanks Pete!

Anyway.. getting really close here, just waiting for my pipes to come back from finish welding (I acknowledge my welds aren't showroom quality, besides I'd probably spend more in welding gas then it will cost to have gruppe5's guy do them

Post by **HT Motorsport** » Sat Nov 11, 2006 7:09 pm

looks like its about time for me to pay you another visit Mark

Beautifull work, Ill be hiring you to supervise my wiring.

H

gidrew · Post by **gidrew** » Sat Nov 11, 2006 7:29 pm

Marc, are you planning on making some kind of hotside heat shield for the turbos like Jim did? Looking at that shot with the expansion tank, there are alot of lines running over the hotside/downpipe, looks like a potential problem.

Anyways, great progress like usual!

Post by **Marc** » Sat Nov 11, 2006 7:35 pm

timmmy wrote:looks like its about time for me to pay you another visit Mark

Beautifull work, Ill be hiring you to supervise my wiring.

H

cool, happy to help :cheers:

Post by **Marc** » Sat Nov 11, 2006 7:36 pm

gidrew wrote:Marc, are you planning on making some kind of hotside heat shield for the turbos like Jim did? Looking at that shot with the expansion tank, there are alot of lines running over the hotside/downpipe, looks like a potential problem.

Anyways, great progress like usual!

theres room, I haven't tied them up or anything yet. I'll use some more rubber clamps to swing things up and out of the way. If things are still too close heat shielding will be used.

Highlander · Post by **Highlander** » Sun Nov 12, 2006 5:48 am

Marc,

Looks awesome. I can't wait to see her finished.

Great work.

Cheers,

Craig Cook.

SilverCQ · Post by **SilverCQ** » Sun Nov 12, 2006 5:52 am

Highlander wrote:Marc,

Looks awesome. I can't wait to see her finished.

Great work.

ditto! cant wait to see this thing rollin!

WAUG0806 · Post by **WAUG0806** » Sun Nov 12, 2006 6:51 am

Nice progress Marc... somehow waiting for this car to get done is much easier than your last one...

Marc - "new vacuum tubing stuff, much nicer than using rubber hose" where do you get the stuff?

"Firesleeve" good stuff for sure, I have some in dull orange color that looks like KaKa as soon as it gets the least bit oily or sooty... saw some in a pic in black color AudiFreakJim? that ought to maintain a better appearance and look better with those hot red camcovers!

Post by **Marc** » Sun Nov 12, 2006 9:25 am

WAUG0806 wrote:Nice progress Marc... somehow waiting for this car to get done is much easier than your last one...

Lol, I remember those last few weeks before you took delivery of the 4ktq, man what a slave driver :-P

Marc - "new vacuum tubing stuff, much nicer than using rubber hose" where do you get the stuff?

Everybody's favorite plumbing supply mail order house, mcmaster-carr.

they are called instant tube fittings. This link should get you to the pages of interest, 151,152,153'

http://www.mcmaster.com/nav/framework.a ... e+Fittings

"Firesleeve" good stuff for sure, I have some in dull orange color that looks like KaKa as soon as it gets the least bit oily or sooty... saw some in a pic in black color AudiFreakJim? that ought to maintain a better appearance and look better with those hot red camcovers!

yeah, thats the reason I didn't go with the orange. Gray seems to do better with oil, but black would be even better. Problem is heat absorption.. black.. well.. absorbs heat, kinda defeats the purpose!

WAUG0806 · Post by **WAUG0806** » Sun Nov 12, 2006 1:10 pm

"black.. well.. absorbs heat, kinda defeats the purpose!"

I think I was awake and straight about half the time in physics class, IIRC in the dark, any color will absorb heat the same...

know black would absorb light and heat up... maybe if you get enough glow from your turbo's???

SEStone · Post by **SEStone** » Sun Nov 12, 2006 1:28 pm

:stupid: .

Unless there's an actual source of light under the hood, color shouldn't have any impact on an insulation's ability to insulate/absorb heat on something.

That being said, why is high-temp insulation commonly shiny? Is it just because that's the nature of the material used to make it? I'm thinking exhaust heatshields here and such.

Sam

Post by **Marc** » Sun Nov 12, 2006 1:38 pm

right, light and the radiant heat thing. no idea why they dont make em in black then, or at least not readily available.

Ronald G Wainwright+ · Sun Nov 12, 2006 4:02 pm

a4kquattro wrote:Question for those 'in the know' on the v8s, where does this rubber line normally connect to? (the one toward the right headed toward the bottom of the photo):
just trying to determine if its part of the crankcase ventilation system or if it is a post-throttle-body port..

The one all the way on the right is a vacume hose that gets attatched to a valve on the firwall.
The one near the Manifold hole is a breather line & attatches to eather side of the opening.

Attachment ( 6117 ) : IMG_2216.jpg

cuatrokoop · Post by **Marc** » Sun Nov 12, 2006 4:23 pm

Ronald G Wainwright+ wrote:[/quote]

a4kquattro wrote:Question for those 'in the know' on the v8s, where does this rubber line normally connect to? (the one toward the right headed toward the bottom of the photo):
just trying to determine if its part of the crankcase ventilation system or if it is a post-throttle-body port..

The one all the way on the right is a vacume hose that gets attatched to a valve on the firwall.
The one near the Manifold hole is a breather line & attatches to eather side of the opening.[/quote]

ahh, I'm going to bet that would be for the charcoal canister, then. thanks ron!

Marc Swanson
Proprietor, EFI Motorsport