01-01-2017, 12:21 PM | #23 |
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Go to the site below, view a video of a closed wheel group, then tell me if you're 'racing' your $170,000 car at this track. If you're answer is, 'for sure', you have more money than brains, 'genius'. Or you're just plain stupid.
http://www.sccbc.net/multimedia/videos/ We have not been blessed with great tracks in BC like you guys southward. Until now...this is where the M6 runs...paid members only thanks, in order to keep you squids off the track... http://www.area27.ca |
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01-01-2017, 02:52 PM | #24 | |
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01-01-2017, 03:12 PM | #25 |
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I just like to throw shit
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01-05-2017, 01:23 PM | #27 |
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01-05-2017, 01:54 PM | #28 |
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01-17-2017, 11:57 AM | #29 | |
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The use case and stress/heat that a drivetrain experiences during tracking is significant. Every transmission is built with the ability to manage heat in mind. Look up the parts for the ZF 8HP45 vs 8HP50. Their heat exhchangers are different which is part of the reason why the 8HP50 can be rated for higher torque. There's this uninformed mentality that if I put a tune on my car and the transmission hasn't grenaded itself yet, the tune is safe. It parallels the mentality that the ZF 8HP45 can handle a LOT more power. Heat is what kills torque converters. The heat experienced during one pull may not get you in trouble, but the heat experienced due to a tune (elevated power levels) and 20-30 mins of tracking the car may be enough to significantly damage/wear your torque converter. |
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01-17-2017, 12:28 PM | #30 |
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OP, do you have the additional radiator in your 435? (e.g. the one that is in front of the driver side tire) If not, I suggest starting there first. My wife's F30 335 without that additional radiator got into power reduction mode very quickly the 1 time I took it to Buttonwillow. You should put tires on your mod list as well
Overall I agree with the others on getting a miata or s2k (or E36 M3) kind of cars. |
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01-26-2017, 02:48 PM | #31 |
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get a 235, get tires and suspension, i promise itll be better than that 4 series will be
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02-07-2017, 12:26 AM | #33 | |
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02-07-2017, 12:29 AM | #34 | |
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No more cars though...this one goes to the track. Looking forward to it. Lots of guys run their 325s, the 435 will be fine. And the wife wants to autocross this one...ikr. Autocross? I maybe need to give it a try. |
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02-15-2017, 06:21 PM | #35 |
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I started with my E92 335i at the track bone stock, and gradually modded it over the course (pun intended) of many events w/ BMW CCA and PCA. The 435i xDrive you have isn't all that different of a car in terms of weight/power.
High-temp brake fluid is #1. It matters more than anything, IMO. Good tires or brakes won't help if your brake fluid has boiled. So brake fluid first. I used Motul or Total fluid with success. Tires and brake pads after that. To keep it as economical as possible, buy a dedicated set of rims and tires for the track. I was able to fit a full set of wheels/tires in the back of my E92, a real asset if you don't intend to trailer your rig to the event. Don't drive on the track tires on the street if you don't have to, because if you get a flat, your event might be ruined. Same thing if you mess up your track set during a session; at least you have the option of swapping on your street set and going back out there. Get an OEM BMW set of whatever the smallest set of wheels will fit on your car. Probably 18". Craigslist or even here in the regionals, someone should be selling them for pretty cheap. Michelin PSS is an excellent streetable tire that works well on track. They get greasy when you are really pushing it but work great for most of a 20 min session. More importantly, they last a long time, you can get double-digit track days out of a set if you're a good driver. For brake pads, look for something that doesn't require insane temperatures to function. You would want to upgrade pads the same time as tires, if you get stickier tires it will demand more of the brakes since stickier tires can generate more force = greater heat. I used Hawk pads most of the time with good results. Next is the cooling ...I had an MT in my 335i so I don't know about the 435i auto's and if there are heat problems. In the 335i automatics, BMW didn't upgrade the cooling, they just mated the auto transmission to the car's existing cooling. If they did the same thing for the 435i, then see what other people have run into. Might be worthwhile to invest in a transmission cooler of some sort. As noted, heat is the enemy. Beyond the above, things will get expensive very quickly. Suspension, etc. I would say forget the suspension mods unless there is something you need to do to prevent a problem. E.g. if some part of the suspension is too weak for track duty and should be replaced. Unlikely. I ended up investing $20k+ into my car due to the track - JRZ suspension, race tires, differential, Sparco seats, upgraded everything, etc. It got to a point. After I did my 30-something track day I realized that while the mods were fun and I learned a ton during the process, that I probably wouldn't do it again. I think I had more actual fun when my car was close to stock because I only knew to care about the driving element. The car was fantastic when I had the mods, but in hindsight I felt they ultimately detracted from the track experience because I was focused on the mods. Again, no regrets doing them. Nowadays I'm pretty happy with a stock car with upgraded brake fluid, pads, and tires. Aside from those three items, everything else is a distant second place in terms of what it actually does for the car's performance on the track. I guess this is obvious to me now but wasn't when I was modding. You pay a lot for very little incremental upgrades with suspension, etc. Basically if you feel the car is inadequate after changing brake fluid, pads, and tires, then you should start looking for another car. It would take a very good driver to take the 435i to its limit, so if you're new to tracking a car, it might take you a while. I was at an event once with a guy who had a car similar to mine, he raced motorcycles prior to the event and never tracked a car. I passed him in the morning but he made me look I was standing still in the afternoon once he figured out the physics of it. Charles
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02-23-2017, 01:14 PM | #36 |
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You should look at upgrading your CP, TIC, and FMIC as well. With a JB4 it's highly likely you are going to blow the stock charge pipe, and the stock intercooler just plain sucks...who cares what you are tracking as long as you are having fun
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