PowerMods911 - GTV6 2.5 TT - Race Car

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PowerMods911 - GTV6 2.5 TT - Race Car

Post by PowerMods911 » Mon Mar 25, 2013 1:42 pm

Started the project in all seriousness in April 2007, had a personal set back in 2008 which set the project back for 4 years, but finally made it to the track in May 2012.

I'll dig up pics as we progressed and post them on the forum. For now I have two back in April 2007 when life started :D

It's an original SA 3.0l car, with a wide body kit and some serious rubber on. Engine is a 12 valve 2.5l fuel injected motor with 3.0l sleeves and pistons, pushing it a 2.8l. It has twin Mitsubish T4 turbos, boosting at about 0.6bar. Motor is very smooth and has massive low end torque with max power coming in at 5500 rpm, all driven by the PowerMods ECU. Drive is through a front mounted gearbox.
Attachments
PowerMods911 GTV.jpg
Almost finished......
PowerMods911 GTV.jpg (100.94 KiB) Viewed 5849 times
07042007(001).jpg
Life started way back in 2007, engine installed.
07042007(001).jpg (224.01 KiB) Viewed 5852 times
07042007(002).jpg
Getting the front monted gearbox and gearlever installed.
07042007(002).jpg (204.94 KiB) Viewed 5852 times
Last edited by PowerMods911 on Sun Jun 16, 2013 11:18 pm, edited 2 times in total.
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Re: PowerMods911 Race Car

Post by powermods69 » Mon Apr 01, 2013 7:21 am

You and this car have made great progress in a short time and with the mods that are coming can only get better.
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Re: PowerMods911 - GTV6 2.8 TT - Race Car

Post by Joemart » Tue Apr 02, 2013 9:21 am

Looking forward to seeing it :wink:
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Re: PowerMods911 - GTV6 2.8 TT - Race Car

Post by PowerMods911 » Tue Apr 02, 2013 10:04 am

Working on my suspension, should be ready for the race at Kyalami on 11th May.
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Re: PowerMods911 - GTV6 2.8 TT - Race Car

Post by PowerMods911 » Tue Apr 02, 2013 1:22 pm

Race Car before we added race stickers
Attachments
GTV 911 Race Car before stickers 005.jpg
GTV911 Pic5
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GTV 911 Race Car before stickers 004.jpg
GTV911 Pic4
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GTV 911 Race Car before stickers 003.jpg
GTV911 Pic3
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GTV 911 Race Car before stickers 002.jpg
GTV911 Pic2
GTV 911 Race Car before stickers 002.jpg (84.41 KiB) Viewed 5730 times
GTV 911 Race Car before stickers 001.jpg
GTV911 pic1
GTV 911 Race Car before stickers 001.jpg (52.74 KiB) Viewed 5730 times
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Re: PowerMods911 - GTV6 2.8 TT - Race Car

Post by Mats » Tue Apr 02, 2013 11:14 pm

Why do you call it GTV 911?

It sounds really wrong to me... :|
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Re: PowerMods911 - GTV6 2.8 TT - Race Car

Post by PowerMods911 » Tue Apr 02, 2013 11:52 pm

My race number is 911, and without any particular reason I matched the GTV to the race number. Don't fear the race number 911 is TOTALLY unrelated to the Porche 911. Hopefully the thread title GTV6 2.8TT makes up and clears any confusion as to what the car is. :D

Here's a picture of it on the track with Kevin hot on my heels... PS I borrowed the pic from one of his threads.
Attachments
GTV with Kevin hunting me down.jpg
Can't be...how did he get so close so quickly.........
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Re: PowerMods911 - GTV6 2.8 TT - Race Car

Post by PowerMods911 » Thu Apr 04, 2013 10:59 am

Here are pics of the upside down ball joint Kevin refers to as being loose with 20mm play.
Attachments
GTV Race Car Suspension 008.jpg
close view of ball joint
GTV Race Car Suspension 008.jpg (66.8 KiB) Viewed 5685 times
GTV Race Car Suspension 003.jpg
Driver side lower control arm with "upside down ball joint"
GTV Race Car Suspension 003.jpg (77.16 KiB) Viewed 5685 times
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Re: PowerMods911 - GTV6 2.8 TT - Race Car

Post by PowerMods911 » Thu Apr 04, 2013 11:35 am

Having battled for more that 6 months to break into the 1:16's at zwartkops, I felt that the front suspension mods were far to complicated for me to understsnd and come to grips with. I always battled with understeer. Finally I decided to fit the stock standard GTV6 front suspension back on. Took the original suspension off my 2.5 donor car and sent it in to be refurbished with new bushes and ball joints. Problem was that the refurbished suspension would not be back on time for our next race. Decided to inspect and tighten the entire front end suspesnion before going out again, this we finished at 7pm the night before the race. With no time for wheel alignment we did it ourselves with a piece of string and some visual observations. During quali there was no understeer and I managed a 1:155 but noticed the driver side tyre wasn't happy, too much scrubbing on the outside, did some more alignment in the pits. 1st race, the car felt a whole lot better in the corners, to the extent that I got slightly over confident as can be seen on the youtube clip posted by Giuseppe. Nevertheless with a laptime of 1:135 I've come to accept that the front suspension modifications MUST be working. Now that all the new suspension parts are back I will be changing it out over the next 2 weeks. My thinking is, if my times go backwards I can always refit the "old modifcations" back.


http://youtu.be/bBJvLcagVUk

I'll be posting the suspension changes as i go along, here are some pics to start off with.
Attachments
GTV Race Car Suspension 002.jpg
bottom view of the upper control arms. As I'm fitting coilovers I needed to open them up to allow the springs to fit in.
GTV Race Car Suspension 002.jpg (134.41 KiB) Viewed 5682 times
GTV Race Car Suspension 001.jpg
Top view of the upper control arms.
GTV Race Car Suspension 001.jpg (79.11 KiB) Viewed 5682 times
Last edited by PowerMods911 on Thu Apr 04, 2013 12:03 pm, edited 2 times in total.
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Re: PowerMods911 - GTV6 2.8 TT - Race Car

Post by Giuliettaevo2 » Thu Apr 04, 2013 11:42 am

What kind of balljoint did you use for the upsidedown conversion?
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Re: PowerMods911 - GTV6 2.8 TT - Race Car

Post by PowerMods911 » Thu Apr 04, 2013 12:00 pm

I bought the car with the mods, so I'm not 100% sure. I've been told it's a chevy 2 ball joint. Went to GM motors with the sample and true to form they couldn't tell me. I suspect it's a 1977 Chevy 4100 or 4200 ball joint. I'll keep enquiring, there are a couple of suspension specialist shops in Pretoria that I'm hoping will be able to assist me. Even though there are no markings or codes on the ball joint they should as I have the sample to show them.
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Re: PowerMods911 - GTV6 2.8 TT - Race Car

Post by kevin » Sun Apr 14, 2013 2:18 pm

How's the new front suspension set up coming . Found some pics of last race 2012 showing huge body roll in comparison
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Re: PowerMods911 - GTV6 2.8 TT - Race Car

Post by PowerMods911 » Wed Apr 17, 2013 11:31 am

Giuliettevo2, friends at GM have come back to me and although not 100% certain they believe its from a A4 or AQ series Komando. Apparantly no stock in South Africa (SA) so I'll battle to get my hands on OEM part, I'll look around for some NON OEM part. As a thought I'll post the dimensions on the forum and perhaps some of you in the GM strong hold counties could check it out.
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Re: PowerMods911 - GTV6 2.8 TT - Race Car

Post by PowerMods911 » Wed Apr 17, 2013 11:41 am

Kevin, yes the entire front suspension is off, as is the steering rack. Started fitting the original 2.5 GTV suspension on. So far only done part of the left. Fitted the left lower control arm, went well. Then onto the top contol arm, what a mission. Couldn't get the old one off. Eventually had to take the left side turbo, and exhaust down pipes off. The upper contol arm bolt still wouldn't budge, after some major persuasion it eventually came off.

Fitted the top contol arm and the coil over shock. Will post pics later
Attachments
IMG_3853.JPG
Cut off the stoppers to make space for the coilover springs
IMG_3853.JPG (106.08 KiB) Viewed 5510 times
IMG_3852.JPG
Entire front suspension & steering rack taken off
IMG_3852.JPG (112.07 KiB) Viewed 5510 times
IMG_3851.JPG
Left side coilover sping, LCA, TCA refitted. Note I've kept the torsion bars, reconsidering taking them off.
IMG_3851.JPG (100 KiB) Viewed 5510 times
Last edited by PowerMods911 on Tue Apr 23, 2013 12:34 pm, edited 1 time in total.
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Re: PowerMods911 - GTV6 2.8 TT - Race Car

Post by Giuliettaevo2 » Wed Apr 17, 2013 12:03 pm

Thanks!

I ordered a Volvo 140 balljoint from an partsstore over here after a tip i got on another forum, that balljoint should also be a good size. it will arrive this weekend, after i pick it up i'll measure it up and let you know. :)
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