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Author Topic:   wide metric bms, jet, kraft, etc
speedy46
Dirt Maniac

Total posts: 165
posted February 26, 2005 06:23 PM  
Hey guys what does kind of front end parts like spindles rotors etc. do the big metric guys run??? do they use pinto/granada stuff like the chevelle stubs?

KK17
Dirt Freak

Total posts: 229
posted February 26, 2005 07:29 PM  
I had a kraft that used the stock spindle with a small rotor and caliper adapted..also pinto stuff will work with a little effort...also heard of using all small metric.

sdracer12
Dirt Maniac

Total posts: 180
posted February 26, 2005 09:44 PM  
I have a Fegers car, which is a big metric car. We use Impala steering parts, big metric lower A-frames, pinto spindles, and Granada hubs. Most of the Kraft Kars, Specialty Fab J-cars, B&B cars, etc. in this area use the same setup with the big metrics.

RCJ
Dirt Roller

Total posts: 7
posted February 27, 2005 04:53 AM  
What front springs rates do these cars use?

sdracer12
Dirt Maniac

Total posts: 180
posted February 27, 2005 09:28 PM  
We run in the range of 700# to 850# spring rates in the front. Usually 800# left front, with a 700# or 750# right front, in our big metric.

udecide66
Dirt Freak

Total posts: 229
posted March 01, 2005 02:12 PM  
Jet Mods use the Big Metric frames with Stock lowers, same big spindles,11 Inch rotors (which are already 5 on 5) and a small metric caliper, which you need the adapters that mount small caliper to big spindle. all stock steering components.
The front track width on a Jet Mod is very wide, My car has a 3" offset left front wheel and the Right front is a 2" offset wheel, I measured from outside of tires to get around 76-77" real close to the 78" rule.

[This message has been edited by udecide66 (edited March 01, 2005).]

Iowamod20
Dirt Full Roller

Total posts: 73
posted March 02, 2005 09:07 AM  
I built my car on the Big Metric (Impala) stub, and use ford lowers (From 80's & 90's crown vic's), small metric spindles, rotors, and calipers.

I am also close to the 78" rule.

zeroracing
Dirt Forum Champ
Total posts: 1875
posted March 02, 2005 09:15 AM  
what does a jet mod wiegh??? or big metric stubbed mod weigh?

udecide66
Dirt Freak

Total posts: 229
posted March 02, 2005 09:58 AM  
Hey Zero... After I get my mod a 100% together I will let you know all the weights, I should weigh around 2350-2400 with 15 gallons of fuel and 160 lb driver, I will have to add 75-100 pounds of ballast to make weight rule of 2450. (accounting for fuel burn off) This is what I was told by Jet, we shall see

sdracer12
Dirt Maniac

Total posts: 180
posted March 03, 2005 12:37 AM  
My big metric-clipped car weighs 2195, full of fuel, no driver, with no lead.

[This message has been edited by sdracer12 (edited March 03, 2005).]

wissota3x
Dirt Forum Racer

Total posts: 86
posted March 03, 2005 01:07 AM  
A specialty fab(J car) impala stub bare frame,painted with nerfs and bumpers weighs 501 lbs. Jay claims that the same car built on a chevell frame is 30 pounds lighter and all up front savings.I weighed a Pierce frame last year and it was 425 lbs.They are mid size metric.

boas51
Dirt Maniac

Total posts: 190
posted March 03, 2005 06:24 PM  

 
my chassis' are 415 lbs. complete with all mounts, bumpers, nerfs and interior. on a small metric clip.

zeroracing
Dirt Forum Champ
Total posts: 1875
posted March 04, 2005 06:01 AM  
hey boas51 is that car underslung? also what tubing? dom?

boas51
Dirt Maniac

Total posts: 190
posted March 04, 2005 05:22 PM  



 
it is erw tubing, no underslung.

zeroracing
Dirt Forum Champ
Total posts: 1875
posted March 07, 2005 07:12 PM  
looks good

boas51
Dirt Maniac

Total posts: 190
posted March 09, 2005 06:09 PM  
thanks

fastow
Dirt Maniac

Total posts: 168
posted March 09, 2005 09:02 PM  
Boas51 it looks like your mounts for the 4 link left side would use upper link shorter than the bottom is this the way you run the link lenghts?

zeroracing
Dirt Forum Champ
Total posts: 1875
posted March 10, 2005 09:17 AM  
fastow i do not drive one of boas51's cars but i run the top link shorter, and have for over a full season. i like the car with the long lower on the lr.

jMartin32
Dirt Roller

Total posts: 7
posted March 10, 2005 08:16 PM  
can u explain what the atvantage of the shorter top link is . how does the car react differently as aposed to the longer top link?

boas51
Dirt Maniac

Total posts: 190
posted March 13, 2005 08:17 AM  
my chassis' are made to run 2-link or 4- link both sides. you can run a 20" lower for the 2 link or four link, but i also make plugs to run a 16" lower, and use a 16" left upper and an 18" right upper. or you can z the right with a 20" upper.
i also make plugs to run 14 and 12" lowers for the 2-link.
the longer lower will reduce roll steer, and increase birdcage indexing. i have not personally run the longer lower, but assume it will tighten the car, especially if you float the left spring behind.

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