To 315.... or not to 315?????? SP edition - EvolutionM - Mitsubishi Lancer and Lancer Evolution Community

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

To 315.... or not to 315?????? SP edition

Old Sep 18, 2018, 04:42 PM
  #1  
Newbie
Thread Starter
iTrader: (4)
 
Hoojan's Avatar
 
Join Date: Apr 2014
Location: Omaha, NE
Posts: 50
Thanked 0 Times in 0 Posts
To 315.... or not to 315?????? SP edition

Well I keep going back and forth. Trying to decide if going from 285 to 315 with Street Prepared rules makes any sense. Has anyone tried this on a 8/9 with the limitations of SP? I know it is possible in SM, but will it be too wide, how to make the front fit... are all the questions that keep running through my head... I am about to just say F it and just get wheels/tires and see if this works... Who knows... any thoughts? (I have come to terms with the cutting that would be necessary)
Hoojan is offline  
Old Sep 18, 2018, 04:44 PM
  #2  
Evolved Member
iTrader: (1)
 
Dallas J's Avatar
 
Join Date: Jul 2004
Location: Portland, Or
Posts: 3,507
Thanked 135 Times in 112 Posts
Cutting fenders is totally legal in SP though I dont recall if overfenders are cool or not. Seems if you have enough weight to over heat the tires then you need more tire. And we can roast 285s dual driven.
Dallas J is offline  
Old Sep 18, 2018, 05:03 PM
  #3  
EvoM Super Moderator
iTrader: (3)
 
MinusPrevious's Avatar
 
Join Date: May 2008
Location: So.Cal
Posts: 5,373
Thanked 693 Times in 662 Posts
Heres a clip from SCCA SP rules. Seems like Kens car (315's) below meets some of the rules, but his front fenders would not be allowed

His SSB susp modifications would not be allowed



Last edited by MinusPrevious; Sep 18, 2018 at 06:57 PM.
MinusPrevious is online now  
Old Sep 19, 2018, 06:11 AM
  #4  
Evolved Member
iTrader: (41)
 
EVO8LTW's Avatar
 
Join Date: Jul 2004
Location: Northern Virginia
Posts: 4,014
Thanked 11 Times in 10 Posts
If you have to make the car wider to fit the 315s, you will need to turn more in slaloms. Is this not an issue in reality? Years ago I know the thinking of some 4th gen f-body SP drivers was that going to 335s and beyond in front was counterproductive for this reason.
EVO8LTW is offline  
Old Sep 19, 2018, 08:40 AM
  #5  
Evolved Member
iTrader: (1)
 
Dallas J's Avatar
 
Join Date: Jul 2004
Location: Portland, Or
Posts: 3,507
Thanked 135 Times in 112 Posts
Certainly diminishing returns as you go wider but the 285s we can over heat them so quickly that Im spraying every run 2x just to slow it down. Its true though, you will have to turn further around elements but that should be more than offset by increased cornering speed. We're also still pretty narrow compared to an F-body. My reference is usually the GTRs and my buddies CAM mustang which are around 75-77". I can get 315s on the car and still be under 70 with an ASP Evo probably 71".

Im SM trim I think I can get 335s to around 71" but thats going a little beyond what the average person may have access to.
Dallas J is offline  
Old Sep 19, 2018, 09:00 AM
  #6  
Newbie
Thread Starter
iTrader: (4)
 
Hoojan's Avatar
 
Join Date: Apr 2014
Location: Omaha, NE
Posts: 50
Thanked 0 Times in 0 Posts
The width of the car is a concern for sure but I do think it will be out weighed by the grip improvement. We can cut fenders and have flares but cannot replace complete fender... I am fine with that. We cannot modify anything for fitment inboard of the wheel hub, so that makes ride height a little bit of an issue. Front will have to be raised to get everything to fit..
Hoojan is offline  
Old Sep 19, 2018, 09:10 AM
  #7  
Evolved Member
iTrader: (1)
 
Dallas J's Avatar
 
Join Date: Jul 2004
Location: Portland, Or
Posts: 3,507
Thanked 135 Times in 112 Posts
In ASP, you should probably raise the car a bit anyways. If you look at Tom Berrys car, they are a nearly stock ride height up front with the rear run quite a bit lower. This is to keep the geometry from getting all crazy. And that car use to be low, so I can only assume Tom/Marshal tried both and they agreed not screwing the geometry was more beneficial than lowering CG.

Just to contrast to SM, the fender replacement is usefull so you arent cutting "front bodywork" width which is measured at the centerline of the front wheels. That effects how wide you can get the front aero. ASP doesnt have that same need, so cut away and bolt on some universal overfenders like Zack (wanabgts here)

Dallas J is offline  
Old Sep 19, 2018, 12:56 PM
  #8  
Evolved Member
iTrader: (6)
 
V.8MR's Avatar
 
Join Date: Nov 2006
Location: Chicago
Posts: 1,690
Thanked 42 Times in 38 Posts
Those fender overs dont bother me. Car looks agressive as hell.
V.8MR is online now  
Old Sep 19, 2018, 01:40 PM
  #9  
kaj
Evolved Member
iTrader: (58)
 
kaj's Avatar
 
Join Date: Mar 2006
Location: Fresno, CA
Posts: 9,718
Thanked 240 Times in 230 Posts
Originally Posted by V.8MR View Post
Those fender overs dont bother me. Car looks agressive as hell.
He says they are the $30 flares from Amazon/eBay.. but the only ones I can find are flat on the bottom, so don't allow the wheel/tire to tuck at all. The bright side would be no need to cut the quarter panel.. the downside is they wouldn't really work LOL
Anyone know of a decent, functional, and cheap-ish set? If I find some, then I wouldn't need to wait on offset rear control arms. I really like how these look:

Originally Posted by MinusPrevious View Post
kaj is offline  
Old Sep 20, 2018, 09:34 AM
  #10  
Evolved Member
iTrader: (2)
 
griceiv's Avatar
 
Join Date: Dec 2006
Location: LA, CA
Posts: 1,396
Thanks: 0
Thanked 17 Times in 15 Posts
I have wanted to put 315's on Tom's car for a long time. I don't think the fronts will fit legally with SP rules. It is contact in the area behind the wheel when steering that limits it.
griceiv is offline  
Old Sep 20, 2018, 09:48 AM
  #11  
Evolved Member
iTrader: (1)
 
Dallas J's Avatar
 
Join Date: Jul 2004
Location: Portland, Or
Posts: 3,507
Thanked 135 Times in 112 Posts
Ive had an idea for an offset spherical bushing using a delrin base to push the wheel forward but that does have the negative aspect of causing sticktion in the front bushing. Would have to also melt out all the rubber from the OE bushing to make sure that weight is less than a spherical + spacer weight. It might be legal if done right. Or just bring Tom to SM... the waters warm
Dallas J is offline  
Old Sep 20, 2018, 02:01 PM
  #12  
Newbie
Thread Starter
iTrader: (4)
 
Hoojan's Avatar
 
Join Date: Apr 2014
Location: Omaha, NE
Posts: 50
Thanked 0 Times in 0 Posts
Originally Posted by griceiv View Post
I have wanted to put 315's on Tom's car for a long time. I don't think the fronts will fit legally with SP rules. It is contact in the area behind the wheel when steering that limits it.
Well dang... I have a set of wheels and tires (borrowed) that I am going to test fit once our events are over for the year... They are 18x12's but I was contemplating 18x11... Who knows..
Hoojan is offline  
Old Sep 20, 2018, 02:19 PM
  #13  
Evolved Member
iTrader: (1)
 
Dallas J's Avatar
 
Join Date: Jul 2004
Location: Portland, Or
Posts: 3,507
Thanked 135 Times in 112 Posts
Are they the Rota P45 18x12 +20 or something different? Along the 315 topic, im trying to figure out wheels right now too. Im leaning towards Forgestar F14s in 18x12 around +32.
Dallas J is offline  
Old Sep 20, 2018, 08:04 PM
  #14  
Evolved Member
 
ayoustin's Avatar
 
Join Date: Jul 2014
Location: Chicago
Posts: 1,097
Thanked 80 Times in 71 Posts
Not familiar with SP rules but you're not gonna fit 315s with stock trailing arm without flares.
ayoustin is offline  
Old Sep 20, 2018, 09:46 PM
  #15  
Newbie
Thread Starter
iTrader: (4)
 
Hoojan's Avatar
 
Join Date: Apr 2014
Location: Omaha, NE
Posts: 50
Thanked 0 Times in 0 Posts
Originally Posted by Dallas J View Post
Are they the Rota P45 18x12 +20 or something different? Along the 315 topic, im trying to figure out wheels right now too. Im leaning towards Forgestar F14s in 18x12 around +32.

They are Forgestar F14, not sure the offset though...
Hoojan is offline  

Thread Tools
Search this Thread

Contact Us About Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.