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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 April 17th, 2018, 06:39   #16
dieselherb1
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I hope to have a competitive MK5 TDI. Lowered, 250HP, Wavetrac etc.
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Old May 24th, 2018, 14:19   #17
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Herb, me too! Have a Wavetrac on the bench ready for install and some KW V3'S on the way!
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Old June 2nd, 2018, 05:28   #18
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Do you think the Fluidamper is worth the money?
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Old June 6th, 2018, 13:02   #19
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Power to weight ratio is everything. That includes the driver. ABA powered VWs are nothing to sneeze at these days. Very common to see mk3 Golfs competing in Rally/Rally cross. Also ABA swapped mk1 and mk2 chassis cars. There is an ABA powered mk2 Jetta that is making around 654hp.
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Old June 12th, 2018, 14:49   #20
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Quote:
Originally Posted by dieselherb1 View Post
Do you think the Fluidamper is worth the money?
I bought one for both of my TDIs, so I think they're worth it. I haven't installed one of them yet, so I'll be able to say 100% in the coming weeks when I get it installed.

Just throwing this out there for anyone that might be interested in driving my built RTDI at either some high speed Auto X(sometimes known as Time Attack/Time Trials) or a HPDE is to shoot me a pm to work out the details.
The one catch is that I get to sit shotgun, since I'm unable to drive due to a diving accident. This is my way of fulfilling my need for speed and that adrenaline rush that I used to get when I was behind the wheel.

I'm located near Green Bay, WI, so some of the tracks in the area are Road America, Blackhawk Farms, Autobahn Country Club, and Gingerman.
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Old March 2nd, 2019, 15:37   #21
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I'm joining the discussion late, but I'm interested in the possiblity of autocrossing my 2015 Jetta TDI SE. It's certainly not very fast , as im coming from a 2013 wrx.

I was curious if the Jetta would be competitive, with the right rims and tires? It's bone stock and must stay that way.

What rims and tires have folks found to be optimal, and is it even worth my time? I don't expect to win but it would be nice to at least be somewhat competitive without having to spend a lot or make the car not suitable for DD.

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Old March 2nd, 2019, 16:08   #22
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You'd probably have fun but I wouldn't expect the car will be competitive. Suspension is pretty primitive, and even with good tires you can't get any camber adjusted into the front with stock components. And the gearing is a big disadvantage: most courses will require a 1-2 shift which costs time.
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Old March 2nd, 2019, 16:29   #23
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I agree with Indigo, first thing to address is suspension. In stock form these cars are designed to understeer.

Maybe stick with fun runs after the autocross is over
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Old March 2nd, 2019, 17:30   #24
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I can handle understeer if the car is still able to be quick with a good driver. I just get too frustrated when I bang out what I think was an amazing lap only to find out I barely beat the newbie in his rotted out Taurus with factory tires.
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Old March 3rd, 2019, 18:02   #25
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Quote:
Originally Posted by SuzukiDan7 View Post
I can handle understeer if the car is still able to be quick with a good driver. I just get too frustrated when I bang out what I think was an amazing lap only to find out I barely beat the newbie in his rotted out Taurus with factory tires.
You can do well and beat plenty of other "quick" cars, but you won't be truly competitive in HS class (and certainly not in anything higher like STH) with the Fiesta ST's you'll be going against.

I ran my 2014 Jetta TDI today with Koni coilovers (corner balanced), Tyrolsport Caliper Stiffening Kit, HPS 5.0 pads, ECS Rotors, 17x8 RPF-1's w/ 225/45R17 Goodyear Eagle F1 Asymmetrical 3's... and 2 of the 3 ST's in HS class were still ~2-3 seconds faster (they also PAX'd in the top 10, FWIW). I did, however, run the 4th fastest time (out of 21) in the Novice class.
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Old March 7th, 2019, 05:28   #26
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I have run the only TDI powered Beetle in the USA in Lemon and Champ racing for 5 years. done right they are supper fast after the suspension is set right .

As you cas see we are leading aver fast group real race cars.

this is our new car from last year soon to be TDI powered
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Old March 11th, 2019, 07:37   #27
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Quote:
Originally Posted by dieselherb1 View Post
I hope to have a competitive MK5 TDI. Lowered, 250HP, Wavetrac etc.
I suspect at 250hp and Wavetrac that your mods put you in CSP (handicap of 0.843 IIRC) = you will not be competitive in PAX, maybe raw if you're a ridiculously skilled driver, but even that is doubtful.

ANYONE legitimately considering auto-x should start first with reading the SCCA rules - they are VERY specific about mods/classification. Then go do some ride-a-longs with the local fast guys, while there - talk to a bunch of folks about competitive cars. Then go buy a cheap older Base Cooper and learn to drive in HS. THEN decide if you really want to be competitive. Regardless of the path you choose - have FUN! It is an absolute blast
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Old March 15th, 2019, 12:47   #28
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Originally Posted by USMCFieldMP View Post
You can do well and beat plenty of other "quick" cars, but you won't be truly competitive in HS class (and certainly not in anything higher like STH) with the Fiesta ST's you'll be going against.

I ran my 2014 Jetta TDI today with Koni coilovers (corner balanced), Tyrolsport Caliper Stiffening Kit, HPS 5.0 pads, ECS Rotors, 17x8 RPF-1's w/ 225/45R17 Goodyear Eagle F1 Asymmetrical 3's... and 2 of the 3 ST's in HS class were still ~2-3 seconds faster (they also PAX'd in the top 10, FWIW). I did, however, run the 4th fastest time (out of 21) in the Novice class.
I'm trying to remember, doesn't pax time take into account the fact that my Jetta has zero chance against something like a fiesta ST in raw times? Or was it just based on class?
The last autox I went to they focused more on pax times than raw, which made sense to me, that way everyone should theoretically be competitive regardless of your car.
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Old March 15th, 2019, 15:45   #29
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PAX is indeed a handicap system to try to create a level playing field, BUT....it tries to deal with CLASS differences, not car differences. Your '15 TDI Jetta and the FiST are both in H Street (as long as modifications are limited to rule allowances for the class), so there is no actual handicap difference between the two. You're still gonna have fun though!

Probably not explained particularly well, sorry.
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Old March 16th, 2019, 08:17   #30
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Quote:
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ANYONE legitimately considering auto-x should start first with reading the SCCA rules - they are VERY specific about mods/classification.
That is an incredible understatement. Just changing the pedal caps (ie if you want the GTI look) will bump you out of HS. When I was going through the SCCA rules and classes, I quickly came to the conclusion that I could spend a smallish amount of money and be in the higher end of HS OR I could spend a ton of money to go up a class and do poorly. Needless to say I chose to have fun with the car in HS.

If (when) I choose to race something that is more competitive, then Ill goto a car dedicated for the purpose but that is a whole 'nother conversation.


Quote:
Originally Posted by SKI-R
PAX is indeed a handicap system to try to create a level playing field, BUT....it tries to deal with CLASS differences, not car differences. Your '15 TDI Jetta and the FiST are both in H Street (as long as modifications are limited to rule allowances for the class), so there is no actual handicap difference between the two. You're still gonna have fun though!
The PAX system kinda annoyed me and I also wanted a better way to see how well I was improving so a couple years ago I put together a spreadsheet which would ingest the the full per-race data for the whole season from AXWare. The goal was to factor out the car from the equation and compare the drivers themselves. Essentially, working toward the same goal as PAX but from the opposite direction. This actually worked fairly well but after 2 years of data the spreadsheet was at its limits. An interesting side effect of this method was that I could also pull in and use the HSAX data as well.

I also have an older one I created for go-karts. It doesnt go into nearly as much detail but it has data going back to 2015. In both cases they have the added benefit(?) of being able to estimate who will win.*

Id love to have the time/effort/funding to work with the all of the historic AXWare data (ie like they do for PAX) and provide a service for everyone to use. I.e. I think it would be fun for the guy just starting out to be able to reasonably compare himself to his buddy who was racing a completely different car 5yrs ago. Or in our case, just how well am I doing compared to that Fiesta ST who consistently gets better times. Or more specifically, am I actually catching up to that guy racing, and often winning with, a stock 2015 GTI in Pro?

...If such a service existed, *would* anyone else find something like that useful?


*to preempt the naysayers, I am well aware that there is a bit of "fuzziness" inherent to this in that there are a number of caveats, assumptions, etc that cant be avoided. Just like with your bathroom scale, there is a certain level of accuracy and so consistency throughout is key in order to have anything meaningful.
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