Your donations help keep this valuable resource free and growing. Thank you.
|
Wheel Spacers & Drag Racing |
Post Reply |
Author | |
Rebel Machine
AMC Addicted Joined: Jul/03/2007 Location: Western Il Status: Offline Points: 5121 |
Post Options
Thanks(0)
Posted: Mar/17/2018 at 12:21pm |
On the surface it seems like a bad idea. Better the wheel contact the brake drum & axle flange than have another layer in between.
I'm wanting to change to a 275 tire on my '69 AMX. The style of wheel I have is a 15"x8". I have two pairs, one with a 4.5" backspacing and another with 5.5". The 4.5" wheel pushes the current 255 tire outwards to where I wouldn't want it to go any further out. The 5.5" wheel brings in the same tire too close to the leaf spring which necessitates a 1/4" spacer. Ideally a 5" backspace wheel would be the ticket but they don't make one. Are there any pitfalls to drag racing with spacers on the drive wheels? -Steve- |
|
PROSTOCKTOM
Supporter of TheAMCForum Joined: Jun/20/2010 Location: Indiana Status: Offline Points: 2458 |
Post Options
Thanks(0)
|
So long as your studs are long enough to still allow the minimum thread engagement per NHRA rules. The same length as the diameter of the stud then I do not see why using a a 1/4" spacer is any problem. However I would use a spacer made of a billet aluminum or a steel spacer and not one made from a cast aluminum.
Tom
|
|
Rebel Machine
AMC Addicted Joined: Jul/03/2007 Location: Western Il Status: Offline Points: 5121 |
Post Options
Thanks(0)
|
Thanks for the advice. The other option would be to have the 4.5" wheel machined back to 5" but that would likely compromise the integrity of the wheel.
-Steve- |
|
amc67rogue
AMC Addicted Joined: Nov/05/2008 Location: Phx. AZ. Status: Offline Points: 1578 |
Post Options
Thanks(0)
|
What is too close?
|
|
Keith Coggins 67Rogue X code
|
|
Rebel Machine
AMC Addicted Joined: Jul/03/2007 Location: Western Il Status: Offline Points: 5121 |
Post Options
Thanks(0)
|
Touching.
-Steve- |
|
69 SCRambler
AMC Apprentice Joined: Mar/06/2013 Location: NJ Status: Offline Points: 29 |
Post Options
Thanks(0)
|
Perhaps roll the fender flanges over to gain additional clearance?
|
|
Rebel Machine
AMC Addicted Joined: Jul/03/2007 Location: Western Il Status: Offline Points: 5121 |
Post Options
Thanks(0)
|
The 5.5" backspace wheels put the tire against the leaf spring not the fender. -Steve- |
|
70Javelin360
AMC Apprentice Joined: Feb/20/2008 Location: waukegan, il Status: Offline Points: 153 |
Post Options
Thanks(0)
|
Ive seen 8 sec cars use spacers, its all about clamping force and flat surfaces. just like using a spacer on a flexplate or torque converter
|
|
http://www.cardomain.com/ride/2431219
|
|
RADAMX
AMC Apprentice Joined: Jul/09/2007 Location: Tucson Az. Status: Offline Points: 188 |
Post Options
Thanks(0)
|
I have spacers on mine . I also have the 5/8 studs
1.36 60ft |
|
Hurst390
AMC Addicted Joined: Apr/20/2008 Location: secret Status: Offline Points: 5822 |
Post Options
Thanks(0)
|
It might be hard to see but I have dual pattern wheels. I was gonna run 5/8 studs but just decided to run (10) 1/2" studs with 3/16 spacers
It has been 1.277 60 ft. best |
|
SC/Hurst Rambler
11.62 120 100% Street Legal |
|
Post Reply | |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |