Track forum general chit chat.

[M3SQRD]

Originally Posted by roastbeef

Anyone have anything good or bad to say about Motion Control Suspension?

MCS suspension setups are awesome! I’ve used JRZ, Moton, TCK and MCS setups on my e46 M3, e92 M3s and f82 M4 - the MCS 2WR setup is by far my favorite suspension setup.

[M3SQRD]

Originally Posted by jid2

Question for the group.

On my DCT car I am getting low RPM high load knock like crazy. Didn't notice it much when I first got the car, but this fall and winter it is really lame. Gas in the Northwest is 92, perhaps the winter blend is what's doing it. I also feel like the Alpine tune I have is trying to put too much timing into that portion of the map to give it better low RPM response.

Anyone else deal with this?

I’m running BPM stage 2 and haven’t experienced this...Have you tried installing the stock tune and see how the car runs compared to the Alpine tune?

[jid2]

^^^^ That's on my to-do list. Just haven't felt like getting out the computer and remembering what it involves.

[M3 Number 86]

Originally Posted by jid2

^^^^ That's on my to-do list. Just haven't felt like getting out the computer and remembering what it involves.

hmm i thought our cars had knock sensors and that timing sets were based on targets.....ie car won't advance timing knowing it's knocking?

[dparm]

Does anyone use an OEM double-pane/fog-free helmet visor? I'm not talking about those stick-on things or the sprays, I mean a legit one from Bell or whoever.

If so, do you have problems with glare or reflections of your face on it?

[M3 Number 86]

installing JRZ RS2 in a couple of weeks and buying additional parts that I need to source. Do I need thrust sheets for front and rear or just front or none at all. I'm going with a 6" spring and no helper spring, with JRZ does the spring unseat like it does with KW when both wheels are up in the air? I don't think I use them on my KW (thrust sheets).

[roastbeef]

Did anyone else get into the Speed Secrets "braking and corner entry" webinar? I wasn't able to participate, but I paid to get access to the recordings. I'm only ten minutes in and I can tell it's going to be fantastic.

[slicer]

Originally Posted by M3 Number 86

installing JRZ RS2 in a couple of weeks and buying additional parts that I need to source. Do I need thrust sheets for front and rear or just front or none at all. I'm going with a 6" spring and no helper spring, with JRZ does the spring unseat like it does with KW when both wheels are up in the air? I don't think I use them on my KW (thrust sheets).

Thrust bearings are optional. It will eliminate spring bind. I noticed it primarily during low speed turns with elevation change (like entering a driveway). My KW's used to make noise in those instances. I have them on my Ohlins and I do not experience anything like that). I think there's performance advantage in a track environment but I don't know that the impact is obvious.

Nobody can answer your question about the spring unseating without a helper. That's dictated by the travel of the shock and your ride height. Think about it. If your dampers are designed to run at up to stock ride height and you slam them 2" below that then at full droop that extra travel is taken up by the helper. However you can try to spec your planned ride height with JRZ and they can adjust the internals accordingly. However keep in mind that there is a very small margin of error there - it seems to me you would need to install, set ride height, remove and send back for them to get it perfect. There's a reason why most suspension kits come with helper springs.

I have had multiple discussions with PSI in Sonoma about this topic. Eventually I will send my suspension into them to have them adjust the internals to allow me to delete the helper at my ride height.

[M3 Number 86]

Originally Posted by slicer

Thrust bearings are optional. It will eliminate spring bind. I noticed it primarily during low speed turns with elevation change (like entering a driveway). My KW's used to make noise in those instances. I have them on my Ohlins and I do not experience anything like that). I think there's performance advantage in a track environment but I don't know that the impact is obvious.

Nobody can answer your question about the spring unseating without a helper. That's dictated by the travel of the shock and your ride height. Think about it. If your dampers are designed to run at up to stock ride height and you slam them 2" below that then at full droop that extra travel is taken up by the helper. However you can try to spec your planned ride height with JRZ and they can adjust the internals accordingly. However keep in mind that there is a very small margin of error there - it seems to me you would need to install, set ride height, remove and send back for them to get it perfect. There's a reason why most suspension kits come with helper springs.

I have had multiple discussions with PSI in Sonoma about this topic. Eventually I will send my suspension into them to have them adjust the internals to allow me to delete the helper at my ride height.

i think i'll go with the thrust sheets (not bearings, keep it cheap lol).
Regarding full droop, I just didn't want such a huge gap where in that case I would just throw on the helper springs.

[admranger]

Originally Posted by M3 Number 86

i think i'll go with the thrust sheets.

Do your ladies prefer satin or silk ones?

[Bimmer Barney]

Originally Posted by dparm

Does anyone use an OEM double-pane/fog-free helmet visor? I'm not talking about those stick-on things or the sprays, I mean a legit one from Bell or whoever.

If so, do you have problems with glare or reflections of your face on it?

I've used them when I raced motorcycles and never had any glare issue.

[M3 Number 86]

Originally Posted by admranger

Do your ladies prefer satin or silk ones?

What about velvet? Straight luxury. Haha

[scotty_miller]

Worked with a company in Cali called Ciro Designs. Not sure if any of you west coast guys have worked/heard of them. Had them design me a 69.5 x 10 wing element with custom struts and end plates specific to BMW CCA club racing rules for HP class. They use APR for the element work custom to your specs and do all in house fab and CAD for everything else. Wing element, struts, hardware, and end plates turned out great. Awesome communication and price

[CorruptCommie]

Well you can't just say all that and not say the price

[roastbeef]

I know it's a different application, but we have to deal with the same contributing factors. These vids are always interesting to me.

[scotty_miller]

Originally Posted by CorruptCommie

Well you can't just say all that and not say the price

How could I forget!? He did it all for 1500

[M3 Number 86]

Shakedown with aero removed, old Pirelli scrubs, and kw clubsport. Wanted one test day to get back into the groove and feel the clubsports before switching to jrz. Was kind of a scary day since most of the wiggling was in the high speed you don't wanna go off there spots lol. I noticed I can feel the rear end much more quicker now.

Pros, can correct immediately without tail coming out. Cons, I could be correcting when in fact it's just a squat waiting to set and naturally grip.

I made the mistake of going out with my aero settings and it was hairy haha. Adjusted my suspension completely and it got more stable at the end of the day. Settings were way different, for example I had compression in front softer than the rear with aero but had to have it stiffer than the rear without the aero.

[M3 Number 86]

Originally Posted by scotty_miller

Worked with a company in Cali called Ciro Designs. Not sure if any of you west coast guys have worked/heard of them. Had them design me a 69x10 wing element with custom struts and end plates specific to BMW CCA club racing rules for HP class. They use APR for the element work custom to your specs and do all in house fab and CAD for everything else. Wing element, hardware, and end plates turned out great. Awesome communication and price

Member on here who is a Nissan engineer custom fanned uprights for AriuSen Aeromotions wing to be matched with the z4 APR base plates. Perfection.

[M3MPH1S]

Well my daily 97 F150 decided to crap out on me (rod knock), so I figured the only reasonable response would be to nab an E46 330i ZHP :P

[roastbeef]

very nice. i miss my e46.

[StripclubDJ]

Lmao Phil I'm surprised you didn't get black flags for all that slippage

[M3 Number 86]

Originally Posted by StripclubDJ

Lmao Phil I'm surprised you didn't get black flags for all that slippage

I saw them kind of wanting to so I dialed it down but then that's not a freaking test day for me lol