Race Tracking Your Supra - Information exchange

[decodeddiesel]

Well I do consider myself a bit of a trailblazer now ??

I always knew that you were a big fan of the proposed long course, and you were just trying to bring awareness to this concept.

Sponsored

 

[racebuild]

for anybody actually looking for useful information from this thread, the price sheet above doesn’t include quick disconnects, piston upgrades, shafts upgrades, low friction coating, and other available options

it’s not hard to spec a $10k set of JRZ RS pros, although $7-8k is more typical

Should also note that QD’s come standard up front.

Additional useful information: Rear QD are NOT needed to route the canister into the cabin for all BMW chassis, no holes need to be drilled either. If the shop that is installing requires QD/drilling holes in the car, find a shop with more experience.

If you’re considering a piston/shaft upgrade to the Motorsport shaft and FA3030 piston, just move to the Motorsport damper from the get go.

 

[garudathree]

if there isn't a specific kinematic outcome you're looking for, MCS 1 ways easily gets the job done, for a very reasonable price. it's also using the slightly beefier internals from the 2 way remotes, iirc. spring rate and rebound dampening are all i've wanted to adjust coming from kw 2 way clubsports, and i'd find it hard to squeeze out more lat and yaw g from having compression adjustments right now.

 

[AndyK5]

Kyle, I know who you are (Gridlife) and I just wanted to thank you for taking the time to personally share your experiences with the JRZs on this forum. This sort of information is invaluable.

For people who don't know who Kyle is:

Am I supposed to be impressed? I am Dewey Dewitt #70.

 

[AndyK5]

You can like in any car, but I’m pretty sure you’ll want to keep at least a decent amount of the OE coolant in there to prevent corrosion, especially on these German engines.

The purpose of the water wetter is to prevent corrosion, or I'd do straight distilled water. If I must leave coolant in there anyways, I would not bother with a 1 hour drain + 4 flush cycles min @11minutes each for 2 systems and 1 hour button up.

if there isn't a specific kinematic outcome you're looking for, MCS 1 ways easily gets the job done, for a very reasonable price. it's also using the slightly beefier internals from the 2 way remotes, iirc. spring rate and rebound dampening are all i've wanted to adjust coming from kw 2 way clubsports, and i'd find it hard to squeeze out more lat and yaw g from having compression adjustments right now.

So when MCS is sold the first option for 1 way NR is "bare dampers" https://www.racewerkz.com/products/mcs-a90-supra-dampers-1?variant=42449303896216 and it is $3110. Bare means no springs? This company RWE has RWE spec track focused which I think adds springs and camber plates but I am assuming that. Is this how MCS is normally ordered? Just bare dampers and you choose your top hat and spring brand and their rate? Anything else that is needed?

Edit: So yes MCS sells dampers, MCS dealer packages it with top hats and springs.

 

[razorlab]

A reminder to always inspect your whole car after/before your next event. Found this issue today. Rear toe arm is broken. There is an inner piece here that the collar clamps onto to prevent the arm from being loose. This is obviously broken as the collar is cranked down and the arm is still able to move. This will eventually break the arm itself and be not good. I would not have caught this if I didn't have a habit of grabbing everything and twisting/pushing/pulling as I inspect the car.

Now to call in the morning and get a replacement asap as I have an event this coming weekend.

Following up on this. Kudos to SPL, they sent not one, but two replacement arms, no questions asked.

 

[AndyK5]

Following up on this. Kudos to SPL, they sent not one, but two replacement arms, no questions asked.

This is great to know! Great job to SPL.

 

[type-964]

So being in the market for either SPL or Verkline goodies, any consensus on which one to go with? It seems a handful of people have had SPL parts fail on this platform. Looks like SPL is stepping up to support them, but I wouldn’t want someone to have a failure on track - or on the road.

Am I overthinking this? Should I expect to have to inspect the parts every x number of months/events?

 

[Rocksandblues]

Verkline

 

[decodeddiesel]

If I did it all over again I'd go with Verkline. I've dealt with SPL CS and I'm afraid my experience wasn't as positive as @razorlab. Also from a mechanical engineering perspective the design of the Verkline components seems to be superior to the SPL stuff.

 

[FLtrackdays]

So being in the market for either SPL or Verkline goodies, any consensus on which one to go with? It seems a handful of people have had SPL parts fail on this platform. Looks like SPL is stepping up to support them, but I wouldn’t want someone to have a failure on track - or on the road.

Am I overthinking this? Should I expect to have to inspect the parts every x number of months/events?

Go with what your installer is most comfortable with. If doing it yourself, I can second SPL has been mega helpful and sent me a free replacement as well. I think the error might have been our fault, regardless they were helpful as ?
(edit: Wes beat me to the punchline again ?- Verkline for the design win - honestly I didn’t even know they were an option when I was shopping, just Megan racing and a few others that didn’t have other matching part - if that even matters?)

They're not junk, they just need some customization. The spring rates are fine, the dampers are the issue.

I don't know what you mean by "race shop" but the only faster street-tire A90 time attack driver/shop has helped me spec them and supports the build. And the actual shop that ordered them are one of the two largest JRZ shops in the country.

I'll go ahead and assume that your comments (and the other guy) are based on 0 experience using these dampers on this vehicle. Correct?

Sorry to hear amigo. Yes ZERO experience here with that brand. I only suggested them because I’ve heard Jackie Ding has been helpful to others with the products he sells. I do like sharing my numerous general failures/experiences with others, in hope they won’t do the same.

I was mega fortunate to meet John Dean with Sick Sideways and become friends. Dude was a genius with setups in my S2K and helped other race teams while competing around the US and Canada winning. So, if you know someone like that, or if TBR is using those, for example, absolutely give them a shout. One thing I’ve found over the years, most of these guys are mega helpful and looking to make money on the side. Regardless of make/model/platform.

Hence the Ohlins (for me) for ease & readiness out of the box.

 

[razorlab]

If I did it all over again I'd go with Verkline. I've dealt with SPL CS and I'm afraid my experience wasn't as positive as @razorlab. Also from a mechanical engineering perspective the design of the Verkline components seems to be superior to the SPL stuff.

100% agree. Eibach also makes a rear upper arm that is really nice quality with actual high quality bearings.

Turner has real nice front caster arm bushings. Sealed even!

I’ll be installing both of these over the winter.

 

[FLtrackdays]

100% agree. Eibach also makes a rear upper arm that is really nice quality with actual high quality bearings.

Turner has real nice front caster arm bushings. Sealed even!

I’ll be installing both of these over the winter.

Exactly what I was hoping for this car when I bought it. Lots of track options/mods for when I break things ? (glad ur back amigo- still helping us on the side). Anything Turner look delicious ?

 

[racebuild]

100% agree. Eibach also makes a rear upper arm that is really nice quality with actual high quality bearings.



Turner has real nice front caster arm bushings. Sealed even!



I’ll be installing both of these over the winter.

Double check the collar sleeve/spacer tolerance to the bushing. I had some with a little bit more play than I’m comfortable with so I made new ones.

 

[FLtrackdays]

So being in the market for either SPL or Verkline goodies, any consensus on which one to go with? It seems a handful of people have had SPL parts fail on this platform. Looks like SPL is stepping up to support them, but I wouldn’t want someone to have a failure on track - or on the road.

Am I overthinking this? Should I expect to have to inspect the parts every x number of months/events?

I would check and replace bolts (that need it) on a regular basis. Like you do with your pads and fluids. You will go through parts more and things will see more wear & tear. That being said, it’s so well worth it dude. Most track incidents the driver knows exactly what they did or didn’t do to cause the accident. They usually show really good ones/ videos at club driver’s meetings. Go to as many of those that you can.

Question that comes to mind - Dose Verkline have all the necessary goodies, end links for example, to go with adjustable LCAs? Or (answering my own question here) who gives a shit. Mix & match parts and carry on ? My thought was that they‘d play well together. However many of these parts are not working in conjunction with each other, so who cares. Right?

Sponsored