Marc's 1990 4.2L V8 Twin Turbo Coupe Quattro

Toxcheap · Post by **Toxcheap** » Mon Jul 02, 2007 9:11 pm

all I can say is tuning a V8TT can be a serious work out!!

Marc you've got a fun car there, keep it topped off and you'll be fine!!

Another honorable note: Marc I didn't think it was a good sign at first when that statey came running to your door!!

Good thing he got called to something more important LOL

Post by **Marc** » Mon Jul 02, 2007 10:06 pm

Toxcheap wrote:all I can say is tuning a V8TT can be a serious work out!!

Marc you've got a fun car there, keep it topped off and you'll be fine!!

Another honorable note: Marc I didn't think it was a good sign at first when that statey came running to your door!! Good thing he got called to something more important LOL

ahh good times, good times

Thanks for the tuning help Myke, I dont think I would have made it to the gas station without your help. Literally!

So we're driving along: "Myke, the mixture is going lean, I dont get it?" "It doesn't do it when we lay on the brakes and put the motor under load?". "I fattened up the cell but it isn't helping, still lean??".

"Um. The car's sputtering. Marc, are you out of gas?"

The Statey was icing on the cake. Pulled me over probably because of the massive nose dive on the car due to shitty front shocks (wasn't really going THAT fast.. I think?

). Anyway, we pull over, car smoking a bit from the breather remnants, statey says "This car gonna make it", both of us, nearly in unison "Its running a little rough". Gotta love the stops that result in the statey flinging your license and registration back at you and speeding off, especially when the car you are driving doesn't have an inspection sticker :-o

NoNonsense · Post by **NoNonsense** » Tue Jul 03, 2007 4:13 am

a4kquattro wrote:The Statey was icing on the cake. Pulled me over probably because of the massive nose dive on the car due to shitty front shocks (wasn't really going THAT fast.. I think? ). Anyway, we pull over, car smoking a bit from the breather remnants, statey says "This car gonna make it", both of us, nearly in unison "Its running a little rough". Gotta love the stops that result in the statey flinging your license and registration back at you and speeding off, especially when the car you are driving doesn't have an inspection sticker :-o

I never get that lucky! :frustrated:

Looking forward to seeing your machine in person, Marc! 8)

WAUG0806 · Post by **WAUG0806** » Tue Jul 03, 2007 7:58 am

with Myke riding shotgun he was probably scared to hassle you...

GTIVR62801 · Post by **GTIVR62801** » Tue Jul 03, 2007 8:34 am

Glad to see you have it on the road Marc! FTMFW!

I do have to ask though...

When am I going to see this at the track?

Jretal · Post by **Jretal** » Tue Jul 03, 2007 9:18 am

a4kquattro wrote:ahh good times, good times

Thanks for the tuning help Myke, I dont think I would have made it to the gas station without your help. Literally!

So we're driving along: "Myke, the mixture is going lean, I dont get it?" "It doesn't do it when we lay on the brakes and put the motor under load?". "I fattened up the cell but it isn't helping, still lean??".

"Um. The car's sputtering. Marc, are you out of gas?"

The Statey was icing on the cake. Pulled me over probably because of the massive nose dive on the car due to shitty front shocks (wasn't really going THAT fast.. I think? ). Anyway, we pull over, car smoking a bit from the breather remnants, statey says "This car gonna make it", both of us, nearly in unison "Its running a little rough". Gotta love the stops that result in the statey flinging your license and registration back at you and speeding off, especially when the car you are driving doesn't have an inspection sticker :-o

Sounds familiar to when I was doing the initial tune on my 4000 :-P

Passed the officer going the other direction, look in the rear view to see him putting on his brakes and looking for a place to turn around. I just pulled into a parking lot and waited for him. After telling him what I was doing, he laughed pretty hard and then said all was good and went his merry way...

glad to see the beast is up and running buddy! Gonna be at WG2 ???

Post by **Marc** » Fri Jul 06, 2007 8:10 pm

Pulled the front end apart on the v8 last night to get to the bottom of a nagging issue regarding the tensioner for the serpentine belt. The belt squeals under load from the alternator and I've discovered that the reason is because the tensioning arm isn't tightening up like it should.

Further investigation reveals that you can disassemble the mechanism leaving two needle bearings inside the TB cover that a little keyed cylinder is supposed to ride on. Those two bearings are seized on both my covers and a spare cover I got from Haydn (thanks!). Anybody BTDT? Part number? Etka only shows a full replacement TB cover :(

Ronald G Wainwright+ · Sat Jul 07, 2007 4:10 am

So the problem isn't the tensioner damper shock? I've been through that twice now.
But
a break down CAN be found on the ETKA.....illustration 152-10.

Post by **Marc** » Sat Jul 07, 2007 5:31 am

yeah, looked at that diagram, the part in question isn't on there. I'll take some photos later tonight (after I get back from ALMS at limerock

)

psychorallyfreak · Post by **psychorallyfreak** » Sat Jul 07, 2007 5:37 am

after I get back from ALMS at limerock

Where's that envy emoticon??? 8)

Ronald G Wainwright+ · Sat Jul 07, 2007 8:38 am

a4kquattro wrote:yeah, looked at that diagram, the part in question isn't on there. I'll take some photos later tonight (after I get back from ALMS at limerock )

I hate to suggest Blau....but, they carry a serp belt "kit".
Or I've seen listers match up the bearings at a bearing shop. Like I said....I've never had a problem with them...so I never really payed attantion to the correct info.
A search on the audifans V8 list will prolly get you the info...

noriceforyou · Post by **noriceforyou** » Sat Jul 07, 2007 9:15 am

Ronald G Wainwright+ wrote:[/quote]

a4kquattro wrote:yeah, looked at that diagram, the part in question isn't on there. I'll take some photos later tonight (after I get back from ALMS at limerock )

I hate to suggest Blau....[/quote]

I always get a little fidgety when someone says blau in a negative way. I'm biased towards them, and yet I can't deny the problems people have had.....total rock/hard place :(

Ronald G Wainwright+ · Sat Jul 07, 2007 9:22 am

I've ordered from them before (Blau) & have never had a problem...as others have had. Just some of there prices are more than I can get certain parts from the dealer. & I know Marc can source those bearings somewere.......just can't recall were I seen the info at :frustrated:
But from the pic he posted of the front of the motor I still think it's a tensioner damper....it looks all rusty, & such. But he's got it in front of him...& if he says it's the bearings...then it must be the bearings.

noriceforyou · Post by **noriceforyou** » Sat Jul 07, 2007 9:30 am

Ronald G Wainwright+ wrote:[/quote]I've ordered from them before (Blau) & have never had a problem...as others have had. Just some of there prices are more than I can get certain parts from the dealer. & I know Marc can source those bearings somewere.......just can't recall were I seen the info at :frustrated:
But from the pic he posted of the front of the motor I still think it's a tensioner damper....it looks all rusty, & such. But he's got it in front of him...& if he says it's the bearings...then it must be the bearings.[/quote]

Yeah, having worked there at one time has allowed me to see both sides of the coin.......

Imma think by the time he finds the right bearing (which I'm almost positive is out there) he may as well just be able to source a good used part, or save up the clams for a new piece :(

Twisted5000 · Post by **Twisted5000** » Sat Jul 07, 2007 9:37 am

a4kquattro wrote:Just hooked up the turbos now that I've got a sane fuel map thanks to the loaner LM-1 from Sam :thanks:

Ohmyfvckinggod torque + boost ruuuuuuuuuuuuules

I need to take a break so as not to destroy my new clutch, me thinks.

:woowoo: :woowoo:

Late to this party, but pumped its running well. Can WAIT for a ride. heh. Think you can make it to SFest in Aug Marc?

Ronald G Wainwright+ · Sat Jul 07, 2007 9:51 am

Twisted5000 wrote:Think you can make it to SFest in Aug Marc?

Which is convientley located (near) your ol mans shop this year Sam :-D

Post by **Marc** » Mon Jul 09, 2007 9:28 pm

pics of those bearings I mentioned before:

and the corroded bit that is supposed to roll in the middle

I've got "while I'm in there" itis:

Decided to do the cam seals as I had a nasty oil leak coming from that area.

a_CQ · Post by **a_CQ** » Tue Jul 10, 2007 5:19 am

"while I'm in there"

I hate those words :-)

RSCoupe · Post by **RSCoupe** » Tue Jul 10, 2007 6:09 am

"while I'm in there"

That's the story of my whole project. It just snowballed...

Lt. Sarge · Post by **Lt. Sarge** » Tue Jul 10, 2007 6:19 am

Maybe you guys out to hire project managers....or at least use MS project.

Post by **Marc** » Tue Jul 10, 2007 6:24 am

Lt. Sarge wrote:[/quote]Maybe you guys out to hire project managers....or at least use MS project.[/quote]

I already work with software too much during my day job. I like getting my hands dirty, its sort of the whole point

RSCoupe · Post by **RSCoupe** » Tue Jul 10, 2007 6:26 am

:stupid:

Lt. Sarge · Post by **Lt. Sarge** » Tue Jul 10, 2007 7:28 am

I'm just saying try to get your hands dirty in an efficient manner, is all!

Post by **HT Motorsport** » Wed Jul 11, 2007 4:26 am

Thats what you are doig right Mark...."While you re in there"

Post by **Marc** » Sat Jul 14, 2007 6:55 pm

Ok, more on the serpentine belt saga. After fixing the bearings and getting the new $$ timing belt parts on (tensioner shock, $30 adjuster plastic bushing, etc) and timing the cams up I discovered that at the limit of adjustment the serp. belt was still too loose.

I called Napa and they only had a belt that was an inch shorter, nothing inbetween. I went out and bought it anyway but of course I needed something about .5" shorter :(

So after sitting and staring at the front of the car for about half an hour I finally decided on modifying the pivot arm to get the job done. I had a spare arm from the timing belt cover I got from Haydn (:thanks:). I welded more steel onto the bottom portion to provide plenty of meat for the threads I was going to need and I drilled a new hole for the tensioning roller that was ever so slightly further away from the radial arc of the pivot bolt.

Naturally I didn't get it on the first try, but after a second attempt its right where I want it. Everything goes back together tomorrow :woowoo: