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Tracking / Autocross / HPDE / Drifting What these cars were built for! |
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11-01-2014, 08:57 PM | #1 |
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Spacers and Track width
What's everyone thoughts on Track days and Spacers?
IMO the "theory" behind it sounds great, but response/feedback/drawbacks from experienced (track day) regulars would be awesome. The idea atm is to buy RPF1s 17 x 8 +45 (because its affordable and it fits over the AP Racing Endurance) Wrap them in sticky A050s or Z221 - 235 40 17 Then slap some 20 or 25mm spacers **** My aim is to push out as much I can from these cars without putting down large sums of money. **** Cheers |
11-01-2014, 09:18 PM | #2 |
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The theory is simple: Don't.
What suspension deficiency are you trying to address with spacers? I ran 17x8" +44 without issues. 235/40-17 tires, too. -alex |
11-01-2014, 09:23 PM | #3 |
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high speed sweepers without dancing
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11-01-2014, 11:06 PM | #4 |
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The lack of information in your reply doesn't help.
Would you care to elaborate? What is your car doing that you don't like? What do you mean by "high speed" and "dancing"?
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11-01-2014, 11:41 PM | #5 |
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Track - Winton Motor Raceway
Turn 5 to 6 130km/h give or take 5km/h (AD08Rs - 32PSI Hot) - high speed sweeper is just the name given to it Dances - as in tail is in and out and I have to do micro corrections through it I have 7 clicks down from the front and 5 from the rear because I like the over steer characteristics, I'm well aware this plays a factor in how it "dances" but the current settings suits the track Experience level of the track - 5 with the 86 **I've driven a 34 GTR (400kg heavier) with less development time going through that same turn more stable and faster (yes I know these are 2 completely different cars) Car Mods (in short) UEL Headers (4 to 1) & Overpipe 2.5' OFT Stage 2 UEL E85 Perrin Oil Cooler Shockworks Coilovers (6f / 5r) - camber 3.4 front - 2.7 rear Cusco Front Sway 20mm Cusco Rear Sway 16mm Cusco Rear Lateral Link - Lower Control Arms Cusco Rear Lateral Link - Toe Arms Cusco 4.556 Final Gears + Solid Pinion Spacer Volk Racing TE37SL 18 x 9.5 +45 Yokohama Advan Neova AD08R - 255 35 18 Essex AP Racing Endurance Competition Brake Kit Project Mu RC09 Club Racer (F1102) - Front / Rear Last edited by tnle; 11-02-2014 at 12:08 AM. |
11-01-2014, 11:53 PM | #6 | |
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Quote:
I've added more information in the above comment |
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11-02-2014, 01:25 AM | #7 |
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The most popular fitment with the track guys seems to be a 17x9 wrapped in 245/45..17x8 with a 20mm spacer will have more poke than just a 17x9 if im not mistaken and I read somewhere that more poke creates more turbulence which in turn slows down the car.
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11-02-2014, 01:45 AM | #8 | |
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Quote:
http://www.ft86club.com/forums/showthread.php?t=72989 * I am under the impression they would clear the spokes (because the sprint kit does) and the barrel (because they fit under the 17 x 8 +45) but this is theoretical, a solid image of an Endurance Kit or template behind a set of RPF1s 17 x 9 +35 would be awesome RPF1 17 x 8 +45 was the on the official Essex fitment page http://www.ft86club.com/forums/showthread.php?t=64282 Poke should be almost identical, the difference wouldn't be enough to disturb me. |
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11-02-2014, 10:37 AM | #9 |
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17x9 et 35 RPF1s clear the AP calipers by a narrow margin, but they clear. Just get those and 245/40/17 tires and call it a day.
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11-02-2014, 07:46 PM | #10 |
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I had one of my mates check the endurance kit template behind his rpf1 17 x 9 +35, he said they do not clear the barrels
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11-03-2014, 10:55 AM | #11 |
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There are MUCH better ways to correct that than through increasing track width. Plus, 40mm of extra width probably isn't going to do anything for stability.
I would consider damper adjustments, camber/toe settings or a diffuser before resorting to spacers to correct instability.
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11-03-2014, 11:43 AM | #12 | |
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Quote:
There's a reason every major racing series has very strict limits on track width with big penalties for going over. |
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11-03-2014, 11:51 AM | #13 | |
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Quote:
OP, if you like the car's balance in low speed corners and only want to increase high speed stability, I would think a rear diffuser (and possibly a wing) would be the way to do it.
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11-03-2014, 11:58 AM | #14 |
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You're missing my point, which is that saying extra track width won't help stability contravenes basic physics. It probably won't fix the OP's problem but this is an error of fact.
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