GT40s.com
MK-I  MK-II  MK-III  MK-IV  GULF  MIRAGE  J-CAR  LOLA
GT40s.com
Home Forum Gallery Support GT40s.com  
Register FAQ Advertisers Search Today's Posts Mark Forums Read

Go Back   GT40s.com > GT40 Replica Manufacturers' Corner > Superformance GT40s


Superformance GT40s Sponsored by Superformance.

Reply
 
LinkBack Thread Tools Display Modes
Old 4th June 2010, 09:36 AM   #1 (permalink)
Jim
fearsom
Gold Supporter
United States
 
Join Date: May 2006
Location: Fresno
Posts: 91
Wheel backspace

Can anyone tell me what the backspacing is on the Superfomance Halibrand wheels?
fearsom is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Old 4th June 2010, 10:22 AM   #2 (permalink)
Mark IV's Avatar
Mark IV
Sponsoring Vendor
United States
 
Join Date: Sep 2001
Location: W. New York
GT40: Superformance
Posts: 2,887
Re: Wheel backspace

I have a set on the ground off P2270 right now. I will measure them and post for you.
__________________
The GT 40 reunion at the Glen in 1989 was as close to Heaven as I'll get...
Mark IV is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Old 4th June 2010, 10:47 AM   #3 (permalink)
Jim
fearsom
Gold Supporter
United States
 
Join Date: May 2006
Location: Fresno
Posts: 91
Re: Wheel backspace

Thanks I really appreciate your effort. Jim Fletcher

Last edited by fearsom; 4th June 2010 at 11:02 AM.
fearsom is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Old 5th June 2010, 02:44 PM   #4 (permalink)
Mark IV's Avatar
Mark IV
Sponsoring Vendor
United States
 
Join Date: Sep 2001
Location: W. New York
GT40: Superformance
Posts: 2,887
Re: Wheel backspace

Front and rear are 3.75" backspace for the Halibrand type aluminum wheel.
__________________
The GT 40 reunion at the Glen in 1989 was as close to Heaven as I'll get...
Mark IV is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Old 5th June 2010, 05:27 PM   #5 (permalink)
Jim
fearsom
Gold Supporter
United States
 
Join Date: May 2006
Location: Fresno
Posts: 91
Re: Wheel backspace

Thanks For checking and posting Jim
fearsom is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Old 20th June 2010, 06:37 PM   #6 (permalink)
kcoffield's Avatar
kcoffield
Lifetime Premier Supporter
United States
 
Join Date: Nov 2008
Location: Iowa, USA
GT40: SPF P2174
Posts: 162
Re: Wheel backspace

Quote:
Originally Posted by Mark IV View Post
Front and rear are 3.75" backspace for the Halibrand type aluminum wheel.
I made an unusal discovery today while doing some wheel bearing maintenance and have a question related to this thread:

I had previously noticed one pin drive spinner snout that was slightly shy of flush (front passenger side) on P2174 while the other three were about ” proud when the wheels were seated. I measured the pin drive snouts and they were the same. So I measure the back spacing on the wheels and found one is 3.75” and the other is 4.25”! See attached picture. This makes a very noticeable difference in where they run in the wheel well. They are 6 pin Vintage Wheels HA17s. The fronts are 17x8.5. They were on the car when I bought it and these wheels and were purchased and installed by the previous owner. Sort of a bizarre error on Vintage's part to ship a pair of mismatched wheels. Wonder if Vintage will be willing correct the matter for me? They seem to have a good reutation on the various forums. Guess I'll find out.

The Vintage Wheel website says they are available in 3.75" back space unless for use with adapters, then they are available in 4.25", 4.65", or 5". I suspect they'll machine whatever you want.

So my question is:
  • Is 3.75" the common back spacing for 8.5" wide front wheels on SPF cars? The 4.25" back space wheel actual looks to be a better fit in the wheel well.
  • Is the back spacing measured from the outer edge of the wheel to the mounting surface? I just placed a straight edge across the rim and neasured to the hub surface.
  • I take it the SPF pin drive spindle is not considered a pin drive adapter? I'd usually call an adapter as that you would bolt on to a lugged hub/spindle assembly to adapt to pin drive. Is this correct?
Best,
Kelly
__________________
SPF GT40 Mk II, 74 Pantera GTS, 64 Corvette Roadster
kcoffield is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
All wheel 016 Joz GT40 Tech - Powertrain/Transaxles 6 25th May 2008 06:52 PM
revolution wheel chris want GT40s Wanted, and Parts or Services Needed 0 7th February 2008 02:52 PM
GTD 40 steering wheel simon jude GT40 Tech - Exterior, Interior, AC, & Trim 2 22nd October 2006 11:40 AM
wheel offset Kevin Carey GT40 Tech - Chassis,Brakes,Tires,&Wheels 4 13th October 2005 07:16 PM
Wheel Centers llarsen GT40 Tech - Exterior, Interior, AC, & Trim 9 17th August 2005 05:13 AM


All times are GMT -4. The time now is 03:21 AM.