Suspension, Brakes, Drivetrain discuss the wondrous effects of boost and your miata...
Sponsored by:
Sponsored by:

Tire Rack just frakked up.

Thread Tools
 
Search this Thread
 
Old 01-28-2010, 02:27 AM
  #121  
Senior Member
iTrader: (8)
 
boileralum's Avatar
 
Join Date: Mar 2006
Location: Indianapolis, IN
Posts: 1,105
Total Cats: 229
Default

Originally Posted by JasonC SBB
BS I ran 195's and 205's for years with 240 whp running Azenis class tires. I switched to a 3.9 diff from 4.3 to solve the 1st gear hookup problem. They won't spin if it's warm out.

I never said there was anyting wrong with posin' BTW. Pose away.
LOL. The shelves of trophies would seem to indicate that poseur status = not found.
boileralum is offline  
Old 01-28-2010, 02:33 AM
  #122  
Elite Member
iTrader: (7)
 
turotufas's Avatar
 
Join Date: Jul 2009
Location: Gainesville,Fl
Posts: 3,304
Total Cats: 7
Default

I like your avatar.
turotufas is offline  
Old 01-28-2010, 07:31 AM
  #123  
Elite Member
iTrader: (3)
 
Mach929's Avatar
 
Join Date: Oct 2004
Location: lansdale PA
Posts: 2,494
Total Cats: 0
Default

Originally Posted by JasonC SBB
BS I ran 195's and 205's for years with 240 whp running Azenis class tires. I switched to a 3.9 diff from 4.3 to solve the 1st gear hookup problem. They won't spin if it's warm out.

I never said there was anyting wrong with posin' BTW. Pose away.
when it's warm out i have almost no issues with 195/55/14 t1rs and 4:10 gears. the little extra tire diameter helped quite a bit
Mach929 is offline  
Old 01-28-2010, 07:40 AM
  #124  
Elite Member
iTrader: (8)
 
fmowry's Avatar
 
Join Date: Sep 2006
Location: Severn, MD
Posts: 1,907
Total Cats: 6
Default

Originally Posted by JasonC SBB
BS I ran 195's and 205's for years with 240 whp running Azenis class tires. I switched to a 3.9 diff from 4.3 to solve the 1st gear hookup problem. They won't spin if it's warm out.

I never said there was anyting wrong with posin' BTW. Pose away.
Try 300+ ft-lbs at 2000 rpm. And when I had 260 ft-lbs with my FMII+50 shot, I spun through second on T1S 215-40-16s. I'm beginning to think your 240 whp on a 2554 at 10 psi or whatever was on a slightly optimistic dyno.

Frank
fmowry is offline  
Old 01-28-2010, 08:13 AM
  #125  
Elite Member
iTrader: (12)
 
Doppelgänger's Avatar
 
Join Date: Sep 2007
Location: Charlotte, NC
Posts: 6,850
Total Cats: 71
Default

Originally Posted by SolarYellow510
Scroll up a few rows and remember that JasonC lives here, too. It's the straight men from Texas you see swinging from Emilio's nuts in this thread.
Haha , it was a little sarcasm...just like the sarcasm in ThePass's posts
Doppelgänger is offline  
Old 01-28-2010, 10:21 AM
  #126  
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,338
Total Cats: 573
Default

Originally Posted by boileralum
Negative. At 14psi, I can't floor it in first gear on 15x8 6ULs w/ 225 RS-2s without spinning the tires.
you need a tuneup or a clutch then... i break loose in 2nd from a roll on the same shoes.
y8s is offline  
Old 01-28-2010, 10:37 AM
  #127  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,493
Total Cats: 4,080
Default

Originally Posted by y8s
you need a tuneup or a clutch then... i break loose in 2nd from a roll on the same shoes.
"I can't floor it in first...without spinning tire"

He can not floor it without spinning tires, conversely, when he does floor it in first he spins tires.

"i break loose in 2nd from a roll on the same shoes"

You break loose in 2nd from a roll. Sounds like the same issue to me...
Braineack is offline  
Old 01-28-2010, 10:39 AM
  #128  
Elite Member
iTrader: (8)
 
fmowry's Avatar
 
Join Date: Sep 2006
Location: Severn, MD
Posts: 1,907
Total Cats: 6
Default

Originally Posted by Braineack

Sounds like the same issue to me...
Neither guy can drive?
fmowry is offline  
Old 01-28-2010, 10:47 AM
  #129  
Elite Member
 
JasonC SBB's Avatar
 
Join Date: Jul 2005
Posts: 6,420
Total Cats: 84
Default

Originally Posted by fmowry
Try 300+ ft-lbs at 2000 rpm. And when I had 260 ft-lbs with my FMII+50 shot, I spun through second on T1S 215-40-16s. I'm beginning to think your 240 whp on a 2554 at 10 psi or whatever was on a slightly optimistic dyno.
I've been thinking that, but it made 212 hp on a Dyno Dynamics which was known to read about 10-11% low, and a '99 with the same setup but better exhaust made 217 hp. BEGI has a plot on their website of a 2554 making 240 hp on a DD.

Regarding wheel weight, the irony is that lighter weight really helps on bumps, and most tracks are far smoother than many roads (if you don't hit the berms); so unless you are competing or going after the last 10ths of a second the light weight doesn't have much effect.

Like I said, pose away, I'd do it too, bec 225's just look damn good

Oh, and I can feel the weight difference on certain types of bumps, between my superlight SSR + RE01's, vs the 15x8's + 225 RA-1's. It's the sort of the same feeling live rear axles get when going over certain types of bumps, but smaller.
JasonC SBB is offline  
Old 01-28-2010, 10:53 AM
  #130  
Elite Member
 
JasonC SBB's Avatar
 
Join Date: Jul 2005
Posts: 6,420
Total Cats: 84
Default

P.S. it's the peak torque mulitplied by gear and diff ratio divided by tire diameter that spins tires. 14 psi will more likely spin tires than 10 psi
JasonC SBB is offline  
Old 01-28-2010, 11:12 AM
  #131  
Elite Member
iTrader: (8)
 
fmowry's Avatar
 
Join Date: Sep 2006
Location: Severn, MD
Posts: 1,907
Total Cats: 6
Default

I've got 225 RA-1s on 6ULs for the street but it would be nice to stick some fat 245-40 or something on the back for straightline performance if I wanted to. I suppose if I want to hit the strip (to pose) I could get some MT Street drag radials in 225-50 for the rear. Remember with my LS6 swap the traction limitations from a standstill will be evident. 3.42 rear.

Frank
fmowry is offline  
Old 01-28-2010, 11:17 AM
  #132  
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,338
Total Cats: 573
Default

Originally Posted by Braineack
"I can't floor it in first...without spinning tire"

He can not floor it without spinning tires, conversely, when he does floor it in first he spins tires.

"i break loose in 2nd from a roll on the same shoes"

You break loose in 2nd from a roll. Sounds like the same issue to me...
't <-- I must have missed that.

frank, dont be a douche.
y8s is offline  
Old 01-28-2010, 11:47 AM
  #133  
Former Vendor
Thread Starter
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,442
Total Cats: 2,099
Default

I used to mob around on 185/60s on 5.5" daisies. The ability to turn the rears into smoke whenever I wanted was a real hoot. It was an awesome sleeper, too - I destroyed some poor soul in an E46 M3 on the daisies.
Savington is offline  
Old 01-28-2010, 11:48 AM
  #134  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,493
Total Cats: 4,080
Default

Originally Posted by y8s
't <-- I must have missed that.

frank, dont be a douche.

but you can spin it say that since he's not breaking loose in 2nd like you, he's inferior!!!!
Braineack is offline  
Old 01-28-2010, 12:35 PM
  #135  
:(
iTrader: (7)
 
magnamx-5's Avatar
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,255
Total Cats: 4
Default

hell ive broken traction in downshifting to third at 50 mph on my 225's i could imagine if i ran less tire how much more squiriming i would have to contend with.
magnamx-5 is offline  
Old 01-28-2010, 05:15 PM
  #136  
Moderator
iTrader: (12)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 20,652
Total Cats: 3,011
Default

Originally Posted by JasonC SBB
Regarding wheel weight, the irony is that lighter weight really helps on bumps, and most tracks are far smoother than many roads (if you don't hit the berms); so unless you are competing or going after the last 10ths of a second the light weight doesn't have much effect.
Wheel and tire weight has EVERYTHING to do with accelerating and decelerating.

Or were you joking?
sixshooter is offline  
Old 01-28-2010, 05:18 PM
  #137  
Elite Member
iTrader: (6)
 
Nagase's Avatar
 
Join Date: May 2009
Posts: 1,805
Total Cats: 2
Default

Honestly, I think that the Tire Rack choice for a daily driver is exactly wrong. It might not be so important to some to have the last bit of speed on a Miata, but everyone can appreciate what lower unsprung mass does for the car... cheaping out here means losing the light, nimble, willing, eager feel of the car, and that's a real loss.
Nagase is offline  
Old 01-28-2010, 10:43 PM
  #138  
Senior Member
iTrader: (8)
 
boileralum's Avatar
 
Join Date: Mar 2006
Location: Indianapolis, IN
Posts: 1,105
Total Cats: 229
Default

Originally Posted by Braineack
but you can spin it say that since he's not breaking loose in 2nd like you, he's inferior!!!!
Yes, apparently since I have grip in 2nd gear and not 1st, my torques are all screwed up, lol.

In all honesty, I know that part of my problem is too much rear camber, as in, it is decreasing my available contact patch. Not worth dealing with until it warms back up around March, as the 195/55/15 Blizzaks on my wide-*** 6.5" Rota are absolutely silly at full throttle, even though I am dialed back to the stock actuator pressure of 7-8psi.
boileralum is offline  
Old 01-28-2010, 10:57 PM
  #139  
Junior Member
 
SolarYellow510's Avatar
 
Join Date: Apr 2008
Posts: 349
Total Cats: -2
Default

Originally Posted by fmowry
Remember with my LS6 swap the traction limitations from a standstill will be evident. 3.42 rear.
If you'd kept your LS6 in a Vette, you could run 315 rears on cheap replica wheels, and still have traction limitations.
SolarYellow510 is offline  
Old 01-29-2010, 12:07 AM
  #140  
:(
iTrader: (7)
 
magnamx-5's Avatar
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,255
Total Cats: 4
Default

Originally Posted by SolarYellow510
If you'd kept your LS6 in a Vette, you could run 315 rears on cheap replica wheels, and still have traction limitations.
yeah but unless he had it in a newer vette he would have several hundred pounds more wieght to help him stay planted as well.
magnamx-5 is offline  


Quick Reply: Tire Rack just frakked up.



All times are GMT -4. The time now is 08:27 AM.