turbogrill Posted March 6, 2017 Report Share Posted March 6, 2017 Hi, I am still confusing about springs, talking to the tech inspector didn't help either. The rules says that OEM replacement is 0 points. 1. If I cut my springs, is it still an OEM replacement? 2. If I buy springs that are stiffer but has the same OD/ID as OEM, is it still OEM? 3. If I buy lowering springs, can it it still be OEM? Thanks Quote Link to comment Share on other sites More sharing options...
Alchemy Autosport Posted March 6, 2017 Report Share Posted March 6, 2017 any spring, cut or purchased (stiffer/lower) that retains the stock wound diameter (+/- .25") is FRIZZLE! (Free) The rule is designed to make adjustable sleeved coilovers a point hit only. 1 Quote Link to comment Share on other sites More sharing options...
Mikiel Posted March 6, 2017 Report Share Posted March 6, 2017 Here's the rule: springs, non-OE coil springs (including ‘coil-over’ kit): 10 pts per corner Exemption: Competition vehicles may replace OE coil springs for 0 pts provided that the replacement maintains the exact same ID/OD measurements as the OE spring (+/- 0.25”) Cut, stock springs are zero points. Stiffer springs with the same OD/ID measurements (plus or minus a quarter inch) are zero points. Lowering springs with the same OD/ID measurements (plus or minus a quarter inch) are zero points. If you replace the stock springs with coil-overs or some other spring that doesn't match the OE measurements, now you're at 10 points per corner. Clear as mud? 1 Quote Link to comment Share on other sites More sharing options...
Hi_Im_Will Posted March 6, 2017 Report Share Posted March 6, 2017 (edited) 1 hour ago, turbogrill said: Hi, I am still confusing about springs, talking to the tech inspector didn't help either. The rules says that OEM replacement is 0 points. 1. If I cut my springs, is it still an OEM replacement? 2. If I buy springs that are stiffer but has the same OD/ID as OEM, is it still OEM? 3. If I buy lowering springs, can it it still be OEM? Thanks In practice, any spring that fits the stock seat, is advertised for your car, or looks kinda like the stock spring, is zero points, regardless of how you modify it. Edited March 6, 2017 by Hi_Im_Will grammar 2 Quote Link to comment Share on other sites More sharing options...
turbogrill Posted March 6, 2017 Author Report Share Posted March 6, 2017 Got it!!! Thanks! Talking to tech it seemed like any thing but a Nissan OEM from the 1970 would be a hit. Quote Link to comment Share on other sites More sharing options...
Eman911 Posted March 7, 2017 Report Share Posted March 7, 2017 So, any torsion bar with a diameter + or - .25 inches is how much? What if my springs are .380" larger in OD is the first .25" free? Quote Link to comment Share on other sites More sharing options...
enginerd Posted March 7, 2017 Report Share Posted March 7, 2017 19 minutes ago, Eman911 said: What if my springs are .380" larger in OD is the first .25" free? If that's how you want to think about it, then yes. The 0.13" excess will cost you 10 points / corner: springs, non-OE coil springs (including ‘coil-over’ kit): 10 pts per corner Quote Link to comment Share on other sites More sharing options...
PNWZR1 Posted March 7, 2017 Report Share Posted March 7, 2017 7 hours ago, Mikiel said: Here's the rule: blah blah blah Clear as mud? What are you doing for leaf springs? Quote Link to comment Share on other sites More sharing options...
Ron_e Posted March 7, 2017 Report Share Posted March 7, 2017 (edited) 28 minutes ago, PNWZR1 said: What are you doing for leaf springs? Go for it. Is a leaf spring rule or lack thereof going to put ithe Corvette or any leaf spring vehicle on the podium? Given its lack of podium appearances there might be bigger fish to fry like VPI than a specific Corvette leaf spring rule. No dog in the fight, just suggesting. Edited March 7, 2017 by Ron_e Quote Link to comment Share on other sites More sharing options...
PNWZR1 Posted March 7, 2017 Report Share Posted March 7, 2017 1 hour ago, Ron_e said: Go for it. Is a leaf spring rule or lack thereof going to put ithe Corvette or any leaf spring vehicle on the podium? Given its lack of podium appearances there might be bigger fish to fry like VPI than a specific Corvette leaf spring rule. No dog in the fight, just suggesting. Well just an observation of somebody going through tech with a leaf spring change. Granted I don't expect tech to be able to differentiate between the 10 different leaf springs that came on C4's. Just another rule that is hard to enforce and keep in check. Quote Link to comment Share on other sites More sharing options...
JDChristianson Posted March 7, 2017 Report Share Posted March 7, 2017 8 hours ago, Eman911 said: So, any torsion bar with a diameter + or - .25 inches is how much? What if my springs are .380" larger in OD is the first .25" free? Trouble maker..... Shouldn't you be out chasing down Luigi on his Vespa finding out what he did with your parts? Quote Link to comment Share on other sites More sharing options...
Hi_Im_Will Posted March 7, 2017 Report Share Posted March 7, 2017 11 hours ago, Eman911 said: So, any torsion bar with a diameter + or - .25 inches is how much? What if my springs are .380" larger in OD is the first .25" free? 9 hours ago, PNWZR1 said: What are you doing for leaf springs? 7 hours ago, PNWZR1 said: Well just an observation of somebody going through tech with a leaf spring change. Granted I don't expect tech to be able to differentiate between the 10 different leaf springs that came on C4's. Just another rule that is hard to enforce and keep in check. Let me repeat, since it applies to leafs and torsion bars also: In practice (at the track and in impound, not in forum-land) , any spring that fits the stock seat, is advertised for your car, or looks kinda like the stock spring, is zero points, regardless of how you modify it. The rule is intended to penalize coil-overs, egregiously different wire diameters, and stuff that obviously is not intended for your car (think school bus springs on a pinto). If you're unsure about your particular spring, email Phil (phil.mckinney@chumpcar.com) and state your case as to why the specific spring you have (or intend to buy) should be zero point. If you ask nicely and make a good argument, you're likely to get your specific case clarified in your favor. 2 Quote Link to comment Share on other sites More sharing options...
lenbo211 Posted March 7, 2017 Report Share Posted March 7, 2017 17 hours ago, Mikiel said: Clear as mud? The rule is basically about coil overs. outside of that I've never seen or heard of them worrying about springs. And as Mikiel suggests, if in doubt, rub mud on it so it looks stock. 2 Quote Link to comment Share on other sites More sharing options...
lenbo211 Posted March 7, 2017 Report Share Posted March 7, 2017 10 hours ago, PNWZR1 said: What are you doing for leaf springs? Now you're just causing trouble. What's wrong? you can't handle a thread that is shorter than 5 pages? Quote Link to comment Share on other sites More sharing options...
TBone Posted March 7, 2017 Report Share Posted March 7, 2017 32 minutes ago, Hi_Im_Will said: (think school bus springs on a pinto). I ran station wagon springs on my Pinto. But that wasn't ChumpCar... 1 Quote Link to comment Share on other sites More sharing options...
Mikiel Posted March 7, 2017 Report Share Posted March 7, 2017 15 hours ago, PNWZR1 said: What are you doing for leaf springs? That's up to Phil. Send him an email with your proposed change and he'll give you a number. Quote Link to comment Share on other sites More sharing options...
TiredBirds Posted March 8, 2017 Report Share Posted March 8, 2017 On 3/6/2017 at 5:19 PM, Hi_Im_Will said: In practice, any spring that fits the stock seat, is advertised for your car, or looks kinda like the stock spring, is zero points, regardless of how you modify it. That... get on the Moog website and have at it. Quote Link to comment Share on other sites More sharing options...
PNWZR1 Posted March 8, 2017 Report Share Posted March 8, 2017 23 hours ago, Mikiel said: That's up to Phil. Send him an email with your proposed change and he'll give you a number. Tech can do their job at tech in or impound. Quote Link to comment Share on other sites More sharing options...
LAMR2 Posted March 8, 2017 Report Share Posted March 8, 2017 And then when you don't like his answer you'll complain about not knowing beforehand. 2 Quote Link to comment Share on other sites More sharing options...
Mellow Mike Posted March 8, 2017 Report Share Posted March 8, 2017 (edited) On March 6, 2017 at 4:44 PM, turbogrill said: Hi, I am still confusing about springs, talking to the tech inspector didn't help either. The rules says that OEM replacement is 0 points. 1. If I cut my springs, is it still an OEM replacement? 2. If I buy springs that are stiffer but has the same OD/ID as OEM, is it still OEM? 3. If I buy lowering springs, can it it still be OEM? Thanks This is racing. The rules tell you what you can't do, not what you can do. So print a copy of the rules put in the mag rack next to the John and when you come up with some "bright" idea check if it is mentioned in the rules, if it is not mentioned in rules it's legal. Edited March 10, 2017 by Mellow Mike spelling 1 Quote Link to comment Share on other sites More sharing options...
PNWZR1 Posted March 9, 2017 Report Share Posted March 9, 2017 3 hours ago, LAMR2 said: And then when you don't like his answer you'll complain about not knowing beforehand. You think 20 points for a spring matters when my car is already at a 14,000 VPI? Quote Link to comment Share on other sites More sharing options...
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