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TDI Motorsports This section is dedicated to the folks who push the TDI to the absolute limit racing. Topics should include articles about TDIs in the SCCA ProRally Series, Drag Racing, AutoCross and any other events that include TDIs.

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Old July 10th, 2017, 19:07   #76
TheFawkingHux
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Location: Connecticut
TDI(s): Mk3 Golf CL
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Front control arms parallel to ground is a must.

Rear beam is fine, seemed to do perfectly fine for the racing Minis for the past 50 years.
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Old July 10th, 2017, 20:40   #77
3L3M3NT
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Quote:
Originally Posted by shepner View Post
That's an idea...How much worry is there about the bolts breaking? Are you suggesting no sway bars at all?
stephen
He's suggesting that you disconnect your front sway bar to see how the car handles without it. If you like how it handles keep it that way and if you don't like how it handles, just reconnect the sway bar.
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Old July 11th, 2017, 06:25   #78
CNGVW
 
Join Date: Sep 2009
Location: Bob Mann Auto, 111 High St, Pembroke MA 02359
Fuel Economy: Built a 2002 TDI Jetta that got 120 mpg of diesel using a CNG blend.
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OK I will share with you what years of real racing we have learned to work on the DRVOLKS.com Beetle .
Below is the car with many round of testing and retesting an make up the parts as we go.the roll center as it is now!

to get it to this point one of the biggies add on was the tall lower ball joint

I am working with other Chump VW teams to test what I have found to work.
below is the work that had to be done to get the roll center to work. and my drivers are all real race car drivers not want to be,s so the feed back on it from all drivers at WG is is was the best handling car they had ever driven!!!
Ok I would gladly help
The ball joints are from Speedway parts but the screw tube bottoms to weld on your lower A frames
make shore you check your camber and the axle because you can pull the axles out of the inner cup.
Buy the reamer that matches the taper .
You must mock up the rotor and hub tight and machine the lower ball joint hole off center so that the ball joint screw tube dos not hit the rotor. and recheck after you are done with no springs to make shore the ball joint do not hit the rotors as the swing up/down
How I did it was take the spindle mount it in the brige port with the old ball jount hole at the top and the top of the spindle that the strut gos through is pulled tight to the table the angle was just about right. You may need to shim and use a end mill to punch it off center a bit. it will not follow the stock hole angle . start small and use the reamer with a hand drill so just the bottom thread is below the finished hand grinded part after I was done I had to hand grind the part where the nut pulled down to clear the nut and at a 90deg to the ball joint and cut the top of the ball joint sticking up from hitting the CV joint
I used TT lower control arms forged .
If you give me all the measurement as in the rollcenter jpg i will do the math for you. or just buy his program
I had to cut off 1 inch of the top of the sub frame too this point was 40 HR
I run no sway bars
Then you will need to do bump steering fix after all this work read up on that
What I had to do 19 hr later is cut the bottom of the rack 3/8 and cut the tie rod end off the spindles and swap left for right and weld them up 5/8 of a inch up.
below is the car with is new rubber 275/40/17 on 9.75 rims all corners

This is as I know the biggies tire ever put on a VW plate form like mine that really races and it worked.
Bob Mann
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bobtec@comcast.net

VW and Audi Master Technician and TDI Specialist. Bob has over 35 years of experience in the field, and is listed on TDIclub.com as a trusted TDI Mechanic.
Bob is also known for his CNG conversions and is a consultant for Patrick Racing.
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Old July 12th, 2017, 14:55   #79
shepner
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Good stuff! Thanks everyone. Lots to dig through and try. Taking an earlier cue, I ordered a ball joint to play with which I need to pick up tonight.

>275/40/17 on 9.75 rims all corners
and you can still turn the wheel?

While Im not intending to go anywhere that extreme with this car but I would like to be able to know how to determine this stuff for myself for when I finally can have a dedicated race car. Which software package is that for the suspension? I know that there are several out there. Any real pros/cons to any of them? For stuff like spring rate, are you measuring that or is there someplace that you can look it up? Related, does VW actually publish stuff like that anywhere? It doesnt seem to be in the shop manuals. Gear ratios are another one I was looking for and couldnt find. I kinda miss that from the old Bentley manuals.

stephen
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Old July 22nd, 2017, 10:28   #80
Tikra
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Guts - is there anyone out here to help me with my polo setup?
I can hear you saying "POLO"? Yes, we planted an AFN 1997 tdi into our 11/1997 Polo 6N1open air (slightly 850 kilo heavy). Todays setup is 143 hp with original injectors and original turbo which speed us up within seconds above 205 km/h - with power left but to high in rpm and causing fast increase of temperature.
We use the original 02A CYP transmission.
The future looks like:
Different map sensor, 200hp, race520 nozzles from fratelli bosio (it), turbo either from the audi 2.5 or kkk04.
Still will keep us with the 5th gear....
Advices are welcome:
Configure my own transmission fitting in the 02A housing? What do you suggest? Only 5th gear exchangement? I have 4 mm left in the motorcompartimment so expansion to 6th gear is no possibility....
Brakes actual G60 front ... polo gti back.
Suspension to be considerd (any suggestions for street and weekend track setup?)
Cheers and thank you guys for helping us out....
Helge

Last edited by Tikra; July 22nd, 2017 at 10:31.
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Old July 25th, 2017, 10:06   #81
TheFawkingHux
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TDI(s): Mk3 Golf CL
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I've always had great performance out of Bilstein struts and H&R springs. Handle beautifully and drop it tastefully without being stupidly low, I've had it on three mk2s and two mk3s. The only reason I have Koni coilovers on my Golf right now is it came with them and the bushings are still good. That and I have tuition to pay for, so it's either a class or a cup kit 😞
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Old August 1st, 2017, 11:11   #82
Tikra
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Guys,
does it make sense to use this one on a Polo (street and weekend circuit)?
https://silverproject.eu/en/shop/vw-...e1-adjustable/
or do you know alternatives?
Thanks in advance
Helge
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Old August 1st, 2017, 12:33   #83
CNGVW
 
Join Date: Sep 2009
Location: Bob Mann Auto, 111 High St, Pembroke MA 02359
Fuel Economy: Built a 2002 TDI Jetta that got 120 mpg of diesel using a CNG blend.
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Those will work well . As I showed you need to keep the lower control arm flat or make up a long lower ball joint . Its all about true roll center I can drive around any lowered car any time I wish!



Quote:
Originally Posted by Tikra View Post
Guys,
does it make sense to use this one on a Polo (street and weekend circuit)?
https://silverproject.eu/en/shop/vw-...e1-adjustable/
or do you know alternatives?
Thanks in advance
Helge
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Bob Mann
www.DRVOLKS.com
bobtec@comcast.net

VW and Audi Master Technician and TDI Specialist. Bob has over 35 years of experience in the field, and is listed on TDIclub.com as a trusted TDI Mechanic.
Bob is also known for his CNG conversions and is a consultant for Patrick Racing.
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Old August 9th, 2017, 22:05   #84
adamsjeremy93
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Join Date: Aug 2017
Location: Virginia
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I race my Daily driver 2006 Jetta Tdi BRM DSG. I attend HDPE, time attack and autox. I am in the SMF class for time attack and autox. Mods are 2006 VW Jetta TDI
- GTB1749V Turbo
- PD150 Injectors
- Stage 2 Colt Cam
- 3 Inch Turbo Back Exhaust
- Malone Custom Stage 4 custome Tune
- DSG Stage 1 Tune
- BFI Stage 1 engine trans and dogbone mounts
- TyrolSport Deadset Rigid Subframe Collar Kit
- 034 Track Density Strut Mounts
- H&R Coilover Suspension - RSS Clubsport
- Super Pro Rear Sway Bar 24MM
- SuperPro Control Arms - Performance Lightweight Alloy
- SuperPro Rear Lower Frontward Control Arm Inner Bushing Kit
- SuperPro Rear Main Control Arm Inner Bushing Kit
- SuperPro Rear Main Control Arm Outer Bushing Kit
- SuperPro Rear Trailing Arm Front Bushing Kit
- SuperPro Rear Upper Control Arm Inner Bushings
- SuperPro Rear Upper Control Arm Outer Bushings
- VW Golf R32 Slotted Rotors Blue Calipers Big Brake Kit Front (345x30) and Rear (310x22) with HPS 5.0 pads
- ECS Braided Brakes Lines
- Enkei Raijin 18x8 Black Wheels
- Hankook Ventus RS3 235/40/18
- Badgless Front Grill
- GTI OEM Projector HeadLights
- Euro LED TailLights
- VW Golf R32 MFD2 Radio
- BFI Weighted Shifter
- 35% Tint All Around
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Old August 14th, 2017, 05:46   #85
CNGVW
 
Join Date: Sep 2009
Location: Bob Mann Auto, 111 High St, Pembroke MA 02359
Fuel Economy: Built a 2002 TDI Jetta that got 120 mpg of diesel using a CNG blend.
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Well a lot of you guys bit your tongue on what we did to the DRVOLKS.com Beetle would work !!
Thompson Speedway 1.5 Miles, Lemon race with 115 cars on the track for 14 hrs
We set track record for the Northeast lap time of 1.30.115 of a VW, front wheel drive, TDI only using 3th and 4th gear
We got 4.45 HR on a stock tank of fuel at those kind of speed with over 100 on the track at any given time.
Ok I thought to give a update on how it worked just did Thompson L**** race The changes work very well . Got the car down to 1.30.115 with over 100 cars on the track at any given time .fastest car time was 1.26.580 and we were 5th fastest B class and over all 22th fastest out of 111 cars. And on diesel!!

Friday we tested and where at 1.33 with a clean track all day and where happy.
We did have some setbacks on Saturday 8 laps in we lost the power steering hose and spend 3 hr trying to fix it and Peter of IDPARTS.Com left one out side his warehouse . one drive drove 4 hors to get it. So we could finish up the day. Thank you Peter.

It was a blast now to get ready for the next race.
__________________
Bob Mann
www.DRVOLKS.com
bobtec@comcast.net

VW and Audi Master Technician and TDI Specialist. Bob has over 35 years of experience in the field, and is listed on TDIclub.com as a trusted TDI Mechanic.
Bob is also known for his CNG conversions and is a consultant for Patrick Racing.

Last edited by CNGVW; August 14th, 2017 at 12:01.
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Old August 15th, 2017, 07:22   #86
shepner
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That's great! Keep us posted for how the next one goes

I just got done replacing the front pads and rotors on mine. Also did the first flush with Castro SRF. The OEM pads were glazed, cracked, and starting to crumble. For my stock size brakes, Frozen Rotors was the only (good) choice and G-Loc brakes (excellent customer service btw) is the only one who would do the pads. The rears are still holding up so I'll change them out later. I'm only on their entry racing R8 compound but these things start out noticeably more effective then OEM and they get more so the moment they get slightly warm.

This Sat/Sun are my next Solo races. Next weekend is HSAX at Milwaukee Mile.

stephen
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Old August 16th, 2017, 02:31   #87
dieselherb1
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Location: Va.
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2017 Bugout will be at Dominion Raceway Thornburg Va. Sept. 3. they have a 2 mile road course and will be doing a "rolling drag" 1/8 mile race. I went to Dub Deliverance last week, very disapointed! not a single TDI on the track.
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Old August 20th, 2017, 16:36   #88
adamsjeremy93
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I would of been out to dub deliverance but I had a medical reason for not being there and won't be able to get behind the wheel of a car until mid September.
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