Notices
Motor Sports If you like rallying, road racing, autoxing, or track events, then this is the spot for you.

Autocross EVO - Street Modified Build

Thread Tools
 
Search this Thread
 
Old Aug 29, 2007 | 03:10 PM
  #676  
evobeatsti's Avatar
Evolved Member
iTrader: (7)
 
Joined: Jul 2006
Posts: 1,117
Likes: 1
From: Los Angeles, CA
thats what i love about sm, it is really easy to take the car back to stock whenever you want to...

anyone adivce on a good starting tire pressure on a 275/40/17 v710?
Reply
Old Aug 29, 2007 | 03:15 PM
  #677  
chrisw's Avatar
Evolved Member
iTrader: (2)
 
Joined: Mar 2003
Posts: 2,217
Likes: 0
From: Santa Cruz
Depending on your mods, YMMV

I run 38-40 psi front and 36-38 rear.
Reply
Old Aug 29, 2007 | 03:45 PM
  #678  
Silk's Avatar
Evolved Member
iTrader: (4)
 
Joined: Apr 2005
Posts: 775
Likes: 0
From: Milwaukee ish
What do you mean by your KW's were eating away at your camber plates. Also what camber plates are you running


Originally Posted by evobeatsti
my alignment was way off this weekend, the car is getting some tlc from vesko this week in prep for next weekend. i think i was at -2.8 on one side and -3.0 the other side. the rear is right at -1.7 i think. the big problem is that i had like .25 toe! getting that fixed also. plus my kw's were literally eating my camber plates so vesko is dealing with that too. thanks for the adice on the tires, i will go with higher pressures next time, i was at 32 on all 4 this weekend and the car felt fine enough to me i will try 35 psi next weekend

jon my comment with the 60 foot time was i couldnt believe that it was that slow, not that it was a fast time...

my goal this week is top time of day, hopefully i can drive that

what is everyone else running tire pressure wise?
i have a 275/40/17...
Reply
Old Aug 29, 2007 | 04:03 PM
  #679  
evobeatsti's Avatar
Evolved Member
iTrader: (7)
 
Joined: Jul 2006
Posts: 1,117
Likes: 1
From: Los Angeles, CA
i had cusco camber plates and the washer or something in the camber plate was just torn apart from the kw's, i cant explain it in detail, i dont know enough about it but i know what i saw, v3's and cusco camber plates, at least the way the put them on my car, dont work
Reply
Old Aug 29, 2007 | 08:30 PM
  #680  
ReSin's Avatar
Evolving Member
iTrader: (1)
 
Joined: Nov 2005
Posts: 112
Likes: 0
From: Sandbox bound...
^Take some pics...as I have the same set-up...

Dennis
Reply
Old Aug 29, 2007 | 08:46 PM
  #681  
evobeatsti's Avatar
Evolved Member
iTrader: (7)
 
Joined: Jul 2006
Posts: 1,117
Likes: 1
From: Los Angeles, CA
oh well a shop is fixing it right now, i will see if i can get the destroyed parts to get pics of.

after i autox'd on the new camber plates, i started hearding a clicking sound from the front suspension everytime i hit a decent bump. after some diagnosis, we attributed it to missing alan bolts in the spring perch. i replaced those but the noise kept getting worse and worse. after a while it would pop loudly everytime i encountered a bump.

I took my car to a race shop in slc and they found that the camber plates were getting chewed up. i will get pics when i pick up the car tomorrow
Reply
Old Aug 29, 2007 | 10:38 PM
  #682  
SS RX7 r2's Avatar
Evolved Member
iTrader: (1)
 
Joined: Feb 2003
Posts: 1,038
Likes: 2
From: SoCal
Originally Posted by evobeatsti
oh well a shop is fixing it right now, i will see if i can get the destroyed parts to get pics of.

after i autox'd on the new camber plates, i started hearding a clicking sound from the front suspension everytime i hit a decent bump. after some diagnosis, we attributed it to missing alan bolts in the spring perch. i replaced those but the noise kept getting worse and worse. after a while it would pop loudly everytime i encountered a bump.

I took my car to a race shop in slc and they found that the camber plates were getting chewed up. i will get pics when i pick up the car tomorrow
Sounds like the shaft spacer could've been too short, allowing play if the top sleeved nut was bottomed out. That could damage the bearing and any shaft washers. It happens on JICs when used with cusco hardware. Just need to add some washers or a longer spacer.

Or the underside of the plate could be banged up by the spring top hat making contact. Then again a longer spacer would be needed for clearance.

Last edited by SS RX7 r2; Aug 30, 2007 at 11:36 PM.
Reply
Old Aug 30, 2007 | 11:39 AM
  #683  
evobeatsti's Avatar
Evolved Member
iTrader: (7)
 
Joined: Jul 2006
Posts: 1,117
Likes: 1
From: Los Angeles, CA
that does sound about right
Reply
Old Aug 30, 2007 | 07:48 PM
  #684  
ReSin's Avatar
Evolving Member
iTrader: (1)
 
Joined: Nov 2005
Posts: 112
Likes: 0
From: Sandbox bound...
My right top sleeve nut comes loose every so often, but I recognize the noice, so I just tighten it up. I bet it loosened up on you, causing a grap when you hit potholes and bumps...eventually tearing up the camber plate...at least it's getting fixed now. g/l...

Dennis
Reply
Old Aug 30, 2007 | 08:08 PM
  #685  
evobeatsti's Avatar
Evolved Member
iTrader: (7)
 
Joined: Jul 2006
Posts: 1,117
Likes: 1
From: Los Angeles, CA
thanks, everythin is fixed and i went with some stiffer springs at the same time and it feels amazing
Reply
Old Aug 31, 2007 | 12:05 AM
  #686  
Silk's Avatar
Evolved Member
iTrader: (4)
 
Joined: Apr 2005
Posts: 775
Likes: 0
From: Milwaukee ish
I had a similar problem. I have KW V3 Robispec clubsports and am using Tein camber plates in front and rear. Right after I installed them I noticed a kinda banging noise whenever I hit a pothole. It turned out that the top nut on my leftside front strut was coming loose and banging around inside the camber plate. I tightend it but the problem kept coming back. So eventualy I took the bolt completely off and applied some loctite. Then I retightend the nut and I have yet to have the problem come back after about 8 auto-x's.
Reply
Old Sep 4, 2007 | 09:04 PM
  #687  
SeanJhn9's Avatar
Evolving Member
iTrader: (12)
 
Joined: May 2005
Posts: 398
Likes: 0
From: Meridian, ID
Originally Posted by EVOlutionary
Thanks! It's taken alot of time, hard work, setbacks, and $$ to get it where it is today. I basically had to go through a full build on my last EVO (04 with SSL) before I figured out exactly what I needed. We finally got the car development "finished" (at least for this year). We don't plan on making any changes between now and Nationals. All the rest of the changes I would make are big $$ and will require quite a bit of testing and tuning. I'll save those for next year if I stick with SM.

The car sure is a blast to drive. Best part is, after the season is over I'll put the stock seats back in, throw on some snow tires, take off the aero stuff and some of the graphics, and it will be my daily driver.

Depending on how things go this year at Nationals, this car may be built to run XP in 2008. Full cage, carbon doors, remove glass, etc. . .

EVOlutionary

awesome car man!

how would you compare the 04 SSL to the new RS? do you think you would have gotten the 04 to go as fast as the RS is if you would have kept it? only reason i ask is because i have an 05 SSL and i'd like to get it to compete at a national level, but dont know if the added weight will let the car do so, i know i can always get it to make more power, but i'm already running a 20g9-5, cams, and standalone, i know alot has to do w/ my driving skill lol, but when i get that up to par i'd hate to have the car be the only setback


anyways, good luck at nats!
Reply
Old Sep 5, 2007 | 07:59 AM
  #688  
EVOlutionary's Avatar
Thread Starter
Evolved Member
iTrader: (38)
 
Joined: Sep 2004
Posts: 3,673
Likes: 10
From: Michigan
SeanJhn9-

Thanks for the compliments. It sure is fun to drive! As for the '04 SSL, the only REAL difference that couldn't be equalized easily with the rules is the viscous coupling center diff of the '04 vs. the ACD in the '06. Other than that, you can replace the seats, remove rear seats, remove stereo and speakers, replace the roof with an aluminum roof from an RS or MR, etc. (Yes, if I kept the '04 I was actually going to do the roof swap to lower center of gravity )

Between the ACD and VCU I still don't think there is a concensus which one is faster or better for autocrossing. I'm going to say the ACD, simply because it has more control over the diff, but I'm sure there are some who will disagree.

Since you have an '05, you already have the ACD and the only thing you are lacking is the MIVEC. In my opinion an '05 SSL, with the right mods, can be just as effective as an '06 RS. The key is suspension, wheel and tire, and chassis setup. Power does not mean a whole lot. With a properly set up car, you can be very successful without much power. Look at my car. We won every single race we entered this year except 1, and that was with only 325whp running pump gas. Even at the 1 race we lost, sure, more power would have helped us, but having the car better sorted would have helped also. We had just added the wing and the car was pushing badly. It was really hard to get it to rotate in corners. It was basically just a test and tune day and we were still only out of 1st place by a few thousandths.

You can build your EVO into as competitive of an autocross car as you can afford. No one has ever built a 100% complete StreetMod EVO. The cost to get it to the minimum weight would be very high. But you can get it into the 2900 pound range pretty easily, even with the SSL. Depending on how far you want to go, you could consider an aluminum roof swap, but consider - it will probably only give you a couple tenths improvement per lap. Until you have done everything else that will give you equivalent improvements, and you feel you still need those last couple tenths to win, I would not really consider it. Making the drive faster is always a better idea. Find someone really fast to co-drive your car. Andy almost always beats me by around 0.5-1 second per lap in my own car.

EVOlutionary
Reply
Old Sep 5, 2007 | 03:42 PM
  #689  
evobeatsti's Avatar
Evolved Member
iTrader: (7)
 
Joined: Jul 2006
Posts: 1,117
Likes: 1
From: Los Angeles, CA
great advice.. i am hating the acd lately. it is so jumpy flooring it out of turns, it seems like it takes it a second to realize that i am hammering it then the car jumps a little then finally goes and it really jerky. A race car engineer who is now finally working on my car suggested i go with a mechanical diff b/c it saves weight and is more effective and i am considering that

next year i am offing the kw's and getting something more aggressive... the guy who works on my car suggested some tien super racings with custom valving and springs...

Evolutionary, Mark, what coilovers are you running?? what spring rates?
Reply
Old Sep 5, 2007 | 04:04 PM
  #690  
hokiruu's Avatar
Evolved Member
iTrader: (19)
 
Joined: Apr 2006
Posts: 2,004
Likes: 2
From: Truckee, CA
Originally Posted by evobeatsti
great advice.. i am hating the acd lately. it is so jumpy flooring it out of turns, it seems like it takes it a second to realize that i am hammering it then the car jumps a little then finally goes and it really jerky. A race car engineer who is now finally working on my car suggested i go with a mechanical diff b/c it saves weight and is more effective and i am considering that
Very interesting. I have been under the impression that my VIII was at a serious competitive disadvantage compared to the IX due to lack of the ACD, to the point where I considered selling it in favor of an IX, which I don't really want to do.
I have been curious about a mechanical solution, but not sure what the best options are. Obviously the VIII can benefit from a front diff and even a upgraded rear diff, but what are some of the best options for the center diff? Variable by how it is packed with disks, or in-cabin like some of the more complex rally drivetrains, what realistic options do we have?
Reply



All times are GMT -7. The time now is 03:57 AM.