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Motorsports & Track Forum by BimmerWorld
From Auto-X to Trackday to Racing and Professional Motorsports – this is the place to discuss making BMWs fast Sponsored by BimmerWorld |
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#1 |
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Registered User
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ZHP Driving Flat Out
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#2 |
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Registered User
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Hit the red line a few times, I'm too scared to do that to mine!
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#3 |
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Registered User
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That's why you have to drive "flat out" hehe
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#4 |
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Registered User
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Like how you went crazy on the straight lol
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#5 |
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Registered User
Join Date: Apr 2010
Location: Lehigh Valley, PA (Eastern)
Posts: 86
My Ride: 2005 325i Sport 5spd
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Awesome. Making me miss my weekend of skip barber....
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#6 |
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Registered User
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I never act that way but considering my lack of power vs my M3 I just felt like messing around :p I have a dedicated track e36 M3 but It was on time out after an incident at Buttonwillow last Oct. so I didn't let that spoil my season and so far did 3 events on my ZHP haha but my M3 is back up and running since last week so my ZHP is back to DD Mode :-) I got more clips coming up with my adventures at the track with my ZHP. Stay tuned Or subscribe on my YouTube channel: ic0121.
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#7 |
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#8 |
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Registered User
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looks fun
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#9 |
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Registered User
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Ha ha, that was fun to watch! It's like you're slapping a horse on the butt to make it go faster.
Here's my ZHP going through the same course last year. I'm not driving as fast as you were, shifting at 6,000 RPM instead of redline, and obviously m not having nearly as much fun as you did!
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Lowering my car's resale value one track day at a time... |
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#10 |
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Banned User
Join Date: Jul 2011
Location: Yarmouk, Syria Valentine: Kushy
Posts: 9,441
My Ride: Malfouf
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wow! Looking at the video, you need some stiffer engine/transmission mounts!
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#11 |
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Registered User
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Tell me about it, I noticed it immediately at SOW on my track day with the ZHP. Trans. mounts are good but stock of coarse pretty much the whole car is minus a conversion kit from GC. But in my experience it could be both the trans mounts and shifter bushing that's causing all that play. Good observation btw mate :-)
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#12 | |
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Quote:
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#13 |
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Registered User
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Oh it's you! I was wondering who else was taking a ZHP to Speed Ventures events. Yesterday I was at SoW with Speed Ventures and did try revving it to 6,500 a few times and to 7,000 once.
About the shifting... in the 4th session I was downshifting to 2nd on the skid pad, then twice I couldn't get it into 2nd gear while holding the right-hand turn on the pad. I think I was able to downshift fine if I downshifted in a straight line. In the paddock and driving home it downshifted fine. Is that the kind issue you had with transmission mounts?
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Lowering my car's resale value one track day at a time... |
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#14 |
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Registered User
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Haha yeah it's me! And your issue with 2nd gear is possible that your transmission mounts are deflecting a bit under that hard left/right (don't know what direction you did) and while your trying to get into 2nd it's not properly engaging due to the little gforce your creating. But in my style of driving I'm in 2nd gear while heel toeing in the straight. Get your preffered gear in before you go into the turn. Hope that helps.
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#15 |
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Thanks for the tips (and the driving tips at Buttonwillow). I have aftermarket poly transmission mounts with aluminum enforcer cups, but they are not bolt-through mounts and not the stiffest poly option. My motor mounts were stock Lemforder with ~18,000 miles on them, but after this happened on Saturday, on Sunday I switched to BimmerWorld solid rubber (but not bolt-through) motor mounts, since I had a set laying around.
Reviewing my video, the problems going to 2nd happened only after my big tank slapper. But then again it seems I could downshift right as I started turn-in but not during the middle of the skidpad turn. So maybe one of my transmission mounts is broken now, or maybe I just shouldn't try to downshif mid-turn. I looked at the transmission mounts Sunday but didn't take them out. I should go back under the car and remove the transmission support brace to verify those mounts are okay.
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Lowering my car's resale value one track day at a time... |
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#16 |
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Registered User
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Nice, but is there something wrong with shifting at or slightly above redline?
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#17 |
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OEM ///Member
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In for laters when i have fast internet.
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#18 |
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Registered User
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Unless u have a performance software that eliminates your rev limiter, you shouldn't have any trouble hitting the red. The car was designed that way as a "fail safe" so you don't over rev. But if you so happen to go from 3r to 2nd gear or somehow 1st, kiss it goodbye :p
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#19 |
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Registered User
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#20 |
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Registered User
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BMWTek, everything looks fun and games, I like it.
A few things I noticed. First, nice AKG shifter, its one of my favorites. But your shifter is going crazy on gas, there is SOOO much movement. I'd suggests you get new engine/tranny mounts and replace your shifter bushes. That much shifter movement isnt safe , it could easily cause a money shift or a misshift when you least expect it. Get those replaced and enjoy the car
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