90q IMSA GTO (wanna-be) build

[DFrosty]

Hello all

I'm a little late starting this build thread, here it goes nevertheless...

Taking a bone stock 1991 90q 20v and turning it into my track car

Engine:
7AT modified to S2+ spec
- built 7A bottom end, SCAT rods, JE pistons + updated necessary hardware
- rebuilt 7A head, ported/polished, ARP schtuff + updated internals and hardware
- Wagner Tuning S2/RS2 Intercooler kit
- Wagner Tuning reverse inlet manifold
- 034 universal catch can
- 034 I5 Aluminum radiator
- RS2 fan
- 3" SS exhaust

Gearbox:
01E 5 speed CBD from UrS4
- Spec stage 3+ clutch
- output flange conversion to accommodate S2 hub conversion
- JHM solid shifter
- JHM center diff upgrade
- JHM centering spring upgrade
- B5S4 shifter box, Early shifter rod and stabilizer rod, shortened to fit

Chassis:
- TC Design motorsports harness bar
- 2Bennett S2 B3 '90-'91 2B Coil Program Suspension
- 2Bennett Stage 2 BBK front and rear
- 2Bennett shock tower brace
- 2Bennett rear sway bar upgrade
- 034 Track Density motor mounts
- 034 Aluminum Subframe bushings
- 034 Delrin control arm bushings
- short ratio steering rack
- Widebody kit

Updated pics, build notes and other info forthcoming....

Attachment ( 34751 ) : 90q20v front.JPG


Attachment ( 34752 ) : 90q rear.JPG


Attachment ( 34753 ) : 90q harness bar.JPG


Attachment ( 34754 ) : 90q built block.JPG


Attachment ( 34755 ) : 90q pistons.JPG


Attachment ( 34756 ) : 90q built head.JPG

[audifreakjim]

Cool to see pics of what you are working on. Looks like it's going to be something else! Can you post more pics of the harness bar? This is one of the things I need to do sooner than later. Mainly where it ties into the chassis. Would you mind sharing what it cost to install it?

[quattro v1.0]

Did you already purchase your widebody kit?

[Hank]

Nice!

[OOOOGT]

quattro v1.0 wrote:[/quote]

Did you already purchase your widebody kit?[/quote]

+1, I don't think there's many of those floating around.

[audifreakjim]

I want to see boxflares

[DFrosty]

Cool to see pics of what you are working on. Looks like it's going to be something else! Can you post more pics of the harness bar? This is one of the things I need to do sooner than later. Mainly where it ties into the chassis. Would you mind sharing what it cost to install it?

Thanks Jim....it's been a true test of patience, but am learning a TON doing this myself.

Sure no prob...I'll shoot a few more detailed pix tonight after work. Total cost was $1500 and TC Design was able to complete it inside of a week

[DFrosty]

I want to see boxflares

That would be awesome, but I'm starting out with the standard CQ kit....maybe I can do some shape-shifting in the future?

quattro v1.0 wrote:[/quote]

Did you already purchase your widebody kit?[/quote]

Yes...think I picked up one of the last kits from 034

[DFrosty]

1st of many PITAs....

Someone decided to use their new snap on tool to remove spot welds for removing the battery tray.....and it wasn't me or Dave Johnson seen here helping out with the welding

Attachment ( 34759 ) : 90q firewall 'simo'd'.jpg


Attachment ( 34760 ) : 90q firewall dave johnson.jpg


Attachment ( 34761 ) : 90q firewall repair.jpg


Attachment ( 34762 ) : 90q firewall welded.jpg


Attachment ( 34763 ) : 90q firewall repaired.jpg


Attachment ( 34771 ) : 90q heat shielding.jpg

[00basil00]

Would love to see some pics of the widebody

Sent from my GT-N7100

[PRY4SNO]

A couple things quickly come to mind reading your spec list:

-- You could save money and not sacrifice quality going with an intercooler from Treadstone vs the Wagner kit.

-- A "reverse" intake manifold by Hank (aka Iroz Motorsport) modified to fit the 7A would not only give you more flow but be much more aesthetically appealing.

-- 2Bennett is horrendously expensive for anything compared to... well, almost anything. For a catch can 42DraftDesigns makes a couple beautiful pieces worth a look.





Otherwise, build looks fantastic! I'll be watching your progress for sure, and eagerly await some track day vids.

[Mcstiff]

:stupid:

The IM does not need modification to fit a 7a (as you can see in my thread); the PSP is tight as is the 7a coolant neck.

[mr_aj_johnson]

the 034 catch cans are on ebay for under 50 bucks.

Jim there is a nice shelf where the seat pan and the floorpan interchange for installing a roll hoop on some nice foot pedestals. Harness bar can be bent towards, or away from seats to suit. However if you are going to put in a hoop, you might as well take the time to make it applicable to a spec of some sort. (ie nasa, scca etc)

[quattro v1.0]

quattro v1.0 wrote:

Did you already purchase your widebody kit?[/quote]

Yes...think I picked up one of the last kits from 034[/quote]

Dang, Im considering un-widening mine...

[OOOOGT]

quattro v1.0 wrote:[/quote]

quattro v1.0 wrote:

Did you already purchase your widebody kit?[/quote]

Yes...think I picked up one of the last kits from 034[/quote]

Dang, Im considering un-widening mine...[/quote]

I wonder how bad it would be to get the rears off and shape them to a 4 door...
If they had only done some bumper extensions on the front too, that would really make it look better.

[DFrosty]

A couple things quickly come to mind reading your spec list:

-- You could save money and not sacrifice quality going with an intercooler from Treadstone vs the Wagner kit.

-- A "reverse" intake manifold by Hank (aka Iroz Motorsport) modified to fit the 7A would not only give you more flow but be much more aesthetically appealing.

-- 2Bennett is horrendously expensive for anything compared to... well, almost anything. For a catch can 42DraftDesigns makes a couple beautiful pieces worth a look.

Wow that's fantastic info! I was not aware of Hank's fabbing prowess...definitely will shoot him an email.

That Treadstone ic looks like it will do the job for sure....I should be able to retain the stock cross member with the addition of mounting points as well

Thank you sir, you're a gentleman and a scholar!

[DFrosty]

Would love to see some pics of the widebody

Sent from my GT-N7100

Here's a super rough mockup

Attachment ( 34766 ) : 90q widebody mockup.jpg

[audifreakjim]

Definitely read through Mark's build before you dive in with those fenders. They actually need a fair amount of modification to fit wide wheels and tires since they were originally designed to work with stock bumpers.
Here is a link that shows the fenders current status, but look through from the beginning.
viewtopic.php?f=6&t=16273&p=501871&hilit=fender#p501871

[DFrosty]

Cool to see pics of what you are working on. Looks like it's going to be something else! Can you post more pics of the harness bar? This is one of the things I need to do sooner than later. Mainly where it ties into the chassis. Would you mind sharing what it cost to install it?

Here you go Jim
Have a ton of parts inside, all over the car actually, and can pull everything out this weekend if you'd like some better shots

Attachment ( 34767 ) : 90q harness bar front.jpg


Attachment ( 34768 ) : 90q harness bar top.jpg


Attachment ( 34769 ) : 90q harness bar b pillar mount.jpg


Attachment ( 34770 ) : 90q harness bar rear mount.jpg

[DFrosty]

Timing pin height differences...minor PITA due to multiple trips to have rectified
Hopefully does not turn into a major one during operation

Attachment ( 34772 ) : 90q stock timing pin.jpg


Attachment ( 34773 ) : 90q spec timing pin.jpg


Attachment ( 34774 ) : 90q flywheel compare.jpg


Attachment ( 34775 ) : 90q friction disc.jpg


Attachment ( 34776 ) : 90q spec clutch installed.jpg


Attachment ( 34777 ) : 90q motor+gearbox front.jpg


Attachment ( 34778 ) : 90q motor+gearbox rear.jpg

[DFrosty]

Short ratio steering rack odyssey....Learning the not easy way

Next time I'll wait to purchase a new high pressure line until after I have the new rack in hand. The difference in the location of this port created quite a bit of education....still don't know from what chassis the short ratio rack came from

Attachment ( 34779 ) : 90q short ratio steering rack difference.jpg


Attachment ( 34780 ) : 90q stock rack.jpg


Attachment ( 34781 ) : 90q short rack.jpg


Attachment ( 34782 ) : 90q hi pressure steering line.jpg


Attachment ( 34783 ) : 90q hi pressure line port.jpg

[my2000apb DrBeastCar]

rs2 racks are much shorter and do bolt in, not sure if thats what you have though

[Jockejansson]

Here you have peter bollnerts audi 90imsa gto build with lots of pictures. http://www.audimotorsport.se/imsabyggetfoton.html

[OOOOGT]

Have you talked with the person that has the IMSA GTO 90 rolling chassis that was on ebay recently? IIRC they were in California too.

[RSCoupe]

Have you talked with the person that has the IMSA GTO 90 rolling chassis that was on ebay recently? IIRC they were in California too.

Do you by any chance have a link?