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PowerMods911 - GTV6 2.5 TT - Race Car

Posted: Mon Mar 25, 2013 1:42 pm
by PowerMods911
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.

Re: PowerMods911 Race Car

Posted: Mon Apr 01, 2013 7:21 am
by powermods69
You and this car have made great progress in a short time and with the mods that are coming can only get better.

Re: PowerMods911 - GTV6 2.8 TT - Race Car

Posted: Tue Apr 02, 2013 9:21 am
by Joemart
Looking forward to seeing it :wink:

Re: PowerMods911 - GTV6 2.8 TT - Race Car

Posted: Tue Apr 02, 2013 10:04 am
by PowerMods911
Working on my suspension, should be ready for the race at Kyalami on 11th May.

Re: PowerMods911 - GTV6 2.8 TT - Race Car

Posted: Tue Apr 02, 2013 1:22 pm
by PowerMods911
Race Car before we added race stickers

Re: PowerMods911 - GTV6 2.8 TT - Race Car

Posted: Tue Apr 02, 2013 11:14 pm
by Mats
Why do you call it GTV 911?

It sounds really wrong to me... :|

Re: PowerMods911 - GTV6 2.8 TT - Race Car

Posted: Tue Apr 02, 2013 11:52 pm
by PowerMods911
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.

Re: PowerMods911 - GTV6 2.8 TT - Race Car

Posted: Thu Apr 04, 2013 10:59 am
by PowerMods911
Here are pics of the upside down ball joint Kevin refers to as being loose with 20mm play.

Re: PowerMods911 - GTV6 2.8 TT - Race Car

Posted: Thu Apr 04, 2013 11:35 am
by PowerMods911
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.

Re: PowerMods911 - GTV6 2.8 TT - Race Car

Posted: Thu Apr 04, 2013 11:42 am
by Giuliettaevo2
What kind of balljoint did you use for the upsidedown conversion?

Re: PowerMods911 - GTV6 2.8 TT - Race Car

Posted: Thu Apr 04, 2013 12:00 pm
by PowerMods911
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.

Re: PowerMods911 - GTV6 2.8 TT - Race Car

Posted: Sun Apr 14, 2013 2:18 pm
by kevin
How's the new front suspension set up coming . Found some pics of last race 2012 showing huge body roll in comparison

Re: PowerMods911 - GTV6 2.8 TT - Race Car

Posted: Wed Apr 17, 2013 11:31 am
by PowerMods911
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.

Re: PowerMods911 - GTV6 2.8 TT - Race Car

Posted: Wed Apr 17, 2013 11:41 am
by PowerMods911
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

Re: PowerMods911 - GTV6 2.8 TT - Race Car

Posted: Wed Apr 17, 2013 12:03 pm
by Giuliettaevo2
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. :)