Marc's 1990 4.2L V8 Twin Turbo Coupe Quattro

Document and share your build!
zepmoreau

Post by zepmoreau »

:lol:
Derracuda
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Post by Derracuda »

timmmy wrote:Mark doesn't sleep......I've seen him not sleep too.... its scary!

And he wont share his anti sleep drugs either ;)

H


this i can attest to.... i've been up at 12-1am and he's still on AIM.... it's a little unsettling marc....
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Post by Hank »

Not helping D.
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Marc
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Post by Marc »

lol, sleep is overrated. such a waste of perfectly good shop time! :)
Marc Swanson
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Hank
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Post by Hank »

Not the post I was looking for, but it is a start Marc.


on a side note
You seen my LM-1? LOL
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Post by Marc »

ShavedQuattro wrote:Not the post I was looking for, but it is a start Marc.


on a side note
You seen my LM-1? LOL


:lol:

has Sean 'misplaced it' somewhere in his car? Hooked up to his engine still, perhaps?
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Hank
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Post by Hank »

That was my guess too!!! He is lucky his URQ looks so dang good, or I would do something!

LOL

Hank
Cabbet

Post by Cabbet »

I just spent a couple hours going through this entire project. It is absolutely amazing how much custom work there is on this car, you have all my respect and there is no doubt that you know how to build a car.

I do have some questions regarding the car; do you plan on running a roll cage? What about cleaning up the underneath, it seems that the new/clean parts you put under there just pop out so much because of the crust and it would be great to have the underside looking as good as that engine bay!

As well, thank you for posting your project in great detail. It has assured me that even though there isn't a huge selection of parts for these cars because of their production numbers, almost anything is possible (of course with the right knowledge, resources and time)
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Post by Marc »

Cabbet wrote:I just spent a couple hours going through this entire project. It is absolutely amazing how much custom work there is on this car, you have all my respect and there is no doubt that you know how to build a car.

I do have some questions regarding the car; do you plan on running a roll cage?


Thats a tricky one. If I was going to keep the car forever I would install a roll cage. But eventually I will probably put the car up for sale, and a cage can be a deal breaker for some people..

What about cleaning up the underneath, it seems that the new/clean parts you put under there just pop out so much because of the crust and it would be great to have the underside looking as good as that engine bay!


One of these days I'll put the car on a lift and hit it with a pressure washer.

As well, thank you for posting your project in great detail. It has assured me that even though there isn't a huge selection of parts for these cars because of their production numbers, almost anything is possible (of course with the right knowledge, resources and time)


thanks, this was a really fun project (and still is, hence the continuing list of mods :) )
Marc Swanson
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Post by Marc »

Some updates. They say imitation is the sincerest form of flattery. I hope Janis is flattered :)

Image

I also *finally* got around to installing my JHM solid shifter. I really like the feel, can totally tell the difference right away:

Image

Watkins glen 3 is coming up fast, so I wanted to get the wideband hooked back up to the car so I could re-tune it with the new 1000cc injectors, which is what started the drive to re-do the center console area. I was out of room for more gauges :-P
Marc Swanson
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Toxcheap

Post by Toxcheap »

Cool, I doing something similar but different LOL
mdg3369

Post by mdg3369 »

1000cc injectors?! Are you using alcohol, or just planning on obscene power?
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Post by Marc »

I want to run E85, yeah.
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Hank
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Post by Hank »

I like it mark!! I just deleted radio, and put 3 gauges where the radio goes. Does your car still have AC?
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Post by Marc »

ShavedQuattro wrote:I like it mark!! I just deleted radio, and put 3 gauges where the radio goes. Does your car still have AC?


nope.
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Twisted5000

Post by Twisted5000 »

The car is ridiculous Marc. I love the c/f. Hope I can get a ride sometime soon!
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Post by Marc »

Twisted5000 wrote:The car is ridiculous Marc. I love the c/f. Hope I can get a ride sometime soon!


when's the last street night at NED?
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fasterthenrs2

Post by fasterthenrs2 »

a4kquattro wrote:
Twisted5000 wrote:The car is ridiculous Marc. I love the c/f. Hope I can get a ride sometime soon!


when's the last street night at NED?


:o :D Im flat out on my ass, good Janis Cf replica, Marc,
NED Yeahaaa last street night 10/31 lets see what that short throw dose
fasterthenrs2

Post by fasterthenrs2 »

Marc, any news on a NED night im defiantly up for it, just ordered used rear axles and front control arm travel limiter straps.
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Post by Marc »

sure thing. See you Wednesday.
Marc Swanson
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bradyzq

Post by bradyzq »

a4kquattro wrote:
ShavedQuattro wrote:I like it mark!! I just deleted radio, and put 3 gauges where the radio goes. Does your car still have AC?


nope.


Hmmm, so what might that AC button be for then?

And don't say something boring like a fan. :P
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Marc
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Post by Marc »

bradyzq wrote:
a4kquattro wrote:
ShavedQuattro wrote:I like it mark!! I just deleted radio, and put 3 gauges where the radio goes. Does your car still have AC?


nope.


Hmmm, so what might that AC button be for then?

And don't say something boring like a fan. :P


Nothing really. I have a separate more manly looking switch for map select. I find the HVAC buttons too flaky for anything important. I mostly cut the holes for them in the panel because they were attached to my climate controls box. only later did I realize how easy it would have been to just remove them. oh well.
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Post by Marc »

So I did some 'after' flow bench testing and its leaving me scratching my head some. I'm pretty sure I messed up on the original intake measurements because the numbers are so far off (and I think I know why: the jig I was using to secure the micrometer was too far away from the attachment point causes spring action in the mechanism preventing accurate measurements of lift). Anyway, here are some scans of what I came up with. First, the intake, the 'after' numbers are on the bottom (see above disclaimer):

Image


exhaust numbers make more sense but still interesting. I started off at roughly the same flow, lost some in the mid range and gained at high lift:

Image


So I went to load up the valves in the heads today only to realize that I didn't have any valve stem seals :mad: I'll have to order some next week.

Instead I started prepping the block. Someone suggested threading a bolt into the crank bushing to remove it. I didn't have a bolt big enough but I did have a big tap that was about the right size, 24mmx1.5. Worked perfect!

Image

Image

more updates soon..
Marc Swanson
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Jonathan

Post by Jonathan »

Is that bushing rusty, or is it bronze? Either way, that works.
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Marc
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Post by Marc »

its steel of some type, pot metal or something similar.
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