How about a national IS-F drag competition?
10-24-08, 07:54 PM
#48
11 Second Club
Thread Starter
I think I need drag radials. Unfortunately, the tire sizes are kind of weird. Anybody here have ANY idea of a possible 15 pound 17" rim that fits on our car?
10-24-08, 10:44 PM
#49
Why not just get some DR's for your RE30's? You already have one of the lightest strongest wheels in an 18" there is. One of the very few wheels that comes in @ less than 1lbs per " which is just insane. I think James got a real good deal on some 18" dr's that worked on his is350 from tirerack
oh and if the !!!! quotes behind your 200lbs comment need that much emphasis why not trying to eat about 1000 calories less than you normally do per day for the next 3 months and get on a workout program? You dentist have plenty of free time
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10-27-08, 02:18 PM
#50
FYI...Changed Nitrous shot to 80hp today and blended in some 100 octane fuel for saftey. I did the simple weight reductions: Spare tire, and floor mats. I'm still running my 20" rims with a total Dia. of 26" 275/30/20 on the rear. The weight of the rim itself is lighter than stock but tires weight more. Sunday is D-Day so wish me luck.
10-27-08, 04:10 PM
#51
11 Second Club
Thread Starter
I'm thinking I might go 17x8 and do Nitto 245 45 17s. 25" outer diameter is just a little smaller and might require a 5th gear shift where keeping the 245 45 will still just keep me within 4th gear. I did some "eyeballing" and there seems to be enough clearance do do 17's on the IS-F - but I have to make sure it isn't one of those rims with a "step" on the inner side of the rim. I might just keep the RE30's in gunmetal in 17 x 8. Reason I'm thinking 245 instead of 275 is that I think the 245s in DRs can handle the 400 hp and reduction in rotating mass will help even more. I'm not quite sure of the offset, but I'm thinking 33 mm offset. Now I just gotta find gunmetal 17x8 +33 RE30s. I already know where to get the tires.
10-27-08, 06:29 PM
#53
I'm thinking I might go 17x8 and do Nitto 245 45 17s. 25" outer diameter is just a little smaller and might require a 5th gear shift where keeping the 245 45 will still just keep me within 4th gear. I did some "eyeballing" and there seems to be enough clearance do do 17's on the IS-F - but I have to make sure it isn't one of those rims with a "step" on the inner side of the rim. I might just keep the RE30's in gunmetal in 17 x 8. Reason I'm thinking 245 instead of 275 is that I think the 245s in DRs can handle the 400 hp and reduction in rotating mass will help even more. I'm not quite sure of the offset, but I'm thinking 33 mm offset. Now I just gotta find gunmetal 17x8 +33 RE30s. I already know where to get the tires.
Maybe? If for any reason your stock ECU is pulling timing then a higher octane will help. You should try. Run 100 octane but before you stage the car reset your ECU for max timing. Otherwise no need for anything more than 93.
Last edited by HKS350; 10-27-08 at 06:34 PM. Reason: a run-on sentence.
10-29-08, 08:45 AM
#55
Why don't ya mount em on 18" Volk RE30 wheels??? They are wayyyyyyyyyyyy lighter than the stock IS350 wheels. Less rotational mass = better acceleration
I really like ToothDoc's style.. he really concentrates on weight of the components in his car which is ultimately important...
I really like ToothDoc's style.. he really concentrates on weight of the components in his car which is ultimately important...
Last edited by caymandive; 10-29-08 at 08:52 AM.
10-29-08, 08:17 PM
#56
11 Second Club
Thread Starter
Don't give him too many ideas! He's already got an advantage of being about 50 pounds lighter than me! LOL. I didnt' know they made 245/40/18 MTs!! That would be PERFECT for me too. Looks like I'm going to do some googling...
You know, it's easy to justify the purchase of drag radials. I notice they're going for like 200 or so a tire which makes them cheaper (actually, much cheaper) than stock 19" PS2s so by burning up the drag radials instead of the stock tires, you're actually saving money!
You know, it's easy to justify the purchase of drag radials. I notice they're going for like 200 or so a tire which makes them cheaper (actually, much cheaper) than stock 19" PS2s so by burning up the drag radials instead of the stock tires, you're actually saving money!
Last edited by ToothDoc; 10-29-08 at 08:48 PM.
10-30-08, 04:26 AM
#57
You know, it's easy to justify the purchase of drag radials. I notice they're going for like 200 or so a tire which makes them cheaper (actually, much cheaper) than stock 19" PS2s so by burning up the drag radials instead of the stock tires, you're actually saving money!
Also those MT 245/40/18's are relatively new and have pretty good ratings not to mention it doesn't change the overall tire diameter by more than 1.2% so that dreaded 5th gear issue will be a non-issue.
10-30-08, 10:36 AM
#59
You have no case when it comes to these weight complaints.
Good luck to all of you. I am guessing someone might hit 12.3 on a good DA day.
Jeremy I am hoping to see you hit sub 12.8x with your 65shot.
10-30-08, 06:57 PM
#60
11 Second Club
Thread Starter
Well, the 50 pounds taken out is the jack, spare, tools, and 3 pound engine cover. I'm thinking James did the same thing. So, reality is that I'm 195 and so 30 pounds which is more than offset by the 40 pound savings in the rims. So yes, you're correct - I probably have about a 10 pound advantage. But, that could be negated by him using a lighter battery. BUT, the secret is rotating mass is more valuable than regular mass. I asked the old guy who runs the tech check in at GLD and he said in very very powerful drag cars, the rotating mass makes quite a difference, but in our cars, he said it's just like weight loss and not too much due to rotational mass so not the 6x advantage that I thought I had (6x meaning 1 pounds of rotating mass = 6 pounds of less weight).