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Author Topic:   Strongest J bar
dirtracer14
Dirt Forum Champ
Total posts: 1261
posted February 01, 2005 07:41 PM  
Who has the strongest jar....how long have you run it and what ones to stay away from? I have never wanted to run one because i allways see them break... but figured that had to be a strong one out there?

bluto
Dirt Roller

Total posts: 10
posted February 01, 2005 10:59 PM  
Craig, I run the afco one with the rubber cushions. I think it is better than speedway. If you hurt it, it usually bends in the curve a little. I've never seen one actually break in 3 years of using one. Either bend it back or lengthen it a little to make up the difference. We weld a gusset on the back side of the pinion side heim also. I have bent the pinion mount or the frame before the j-bar. The only one I have actually destroyed was the wreck that put me in the hospital. The j-bar was the least of my worries then. Greg

ratracer10
Dirt Maniac

Total posts: 141
posted February 02, 2005 06:32 AM  
I had an Allstar J-bar break on me last year. I cost me my chassis and block by sending me into the wall. The Affco one doesnít look much different to me. From now on I will be using the UB Machine J-bar. Itís a little long, but the way itís made you can just cut the top end off to the length you want and run a tap into it to rethread it. I will never use another J-bar that puts a side load on a rod end that is not reinforced again.

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- When in doubt, hit the gas.

Dustejr73
Dirt Maniac

Total posts: 177
posted February 02, 2005 09:12 AM  
Craig, I ran an AFCO rubber bushing one for 4 years and only had one break. it broke the heim joint off where it mounts to the pinion plate and i think that was caused by the bolt loosening up due to a vibration in the car. they always held up well for me and you know how rough southern oregon speedway can get.

dirtracer14
Dirt Forum Champ
Total posts: 1261
posted February 02, 2005 07:17 PM  
Thats the kind of input i was looking for ...yes it gets rough down there and it sounds like it held it pretty good?

#13 mod
Dirt Full Roller

Total posts: 72
posted February 03, 2005 07:50 AM  
Not that I'm trying to sell you Harris Auto Racing parts, but they make the most well build j-bar I've ever seen. It's an all welded I beem style j-bar with rubber bushings. Way better than any other I've ever had my hands on.

jeraney
Dirt Roller

Total posts: 8
posted February 03, 2005 10:31 AM  
What no 12 inch one Craig.
jbar curved end hiem looks like the weak spot. Lets see some pics of ones that have been modifed.

ratracer10
Dirt Maniac

Total posts: 141
posted February 03, 2005 10:49 AM  
These arenít the best pictures, but you should get the idea. The bottom hiem is not a just a standard screwed in hiem. The outer housing of the hiem is much stronger, plus it is backed by the full-length gusset. They are not only stronger overall, but lighter too.
http://www.ubmachine.com/page20.html

rocket36
Dirt Freak

Total posts: 209
posted February 03, 2005 12:02 PM  
we run (on our open late model) an aluminium j-bar with a turn buckle, so you don't have to disconnect one end of the bar to change the length every time you alter the mounting point of either end. i think it is from "weirs machine".
it is a real nice piece and we have run the same bar, no problems, for 3 years. i'm real happy with it.

[This message has been edited by rocket36 (edited February 03, 2005).]

duece
Dirt Full Roller

Total posts: 28
posted February 03, 2005 06:00 PM  
I also see that Wehrs Machine makes a steel j-bar that is very similar to the aluminum one that you run. Also has the adjuster you are talking about so you do not have to disconnect it. From what I have seen there products are top notch.

dirtracer14
Dirt Forum Champ
Total posts: 1261
posted February 03, 2005 06:14 PM  
Where can i look at the harris one? BTW my panhard was only 8.5" and i really like how it freed up my car. When i run the long bar behind i get a nasty bind so i will try the j- bar and see how it goes.

44nymod
Dirt Maniac

Total posts: 120
posted February 03, 2005 06:58 PM  
I've broke a UB J-bar. I've been running an Afco J-bar with rubber cushion for 3 years now!

#13 mod
Dirt Full Roller

Total posts: 72
posted February 08, 2005 04:51 PM  
This is Harris's phone #18008335174, just ask for Jay or Reese. It's a real nice piece.

tornadotip
Dirt Roller

Total posts: 5
posted February 09, 2005 11:46 AM  
just take a solid j-bar and cut a 1 inch piece of strap to go around the bend on the top. it will make the bar alot stronger. I did this to mine and never had any trouble since.I think the solid bar is better than the bisquit because it less forgiving when the car rolls. Most top runners dont run the bisquits anymore.

dluna
Dirt Freak

Total posts: 334
posted February 09, 2005 04:04 PM  
how do you get the rear-end back to centerline when you adjust the angle in the solid j-bar then?

rocket36
Dirt Freak

Total posts: 209
posted February 10, 2005 12:28 AM  
most solid bars will have a heim joint screwed into the end that attaches to the frame, so you just unbolt the j-bar from the mount or slider and unscrew the heim (or crew in depending whether you want to lengthen or shorten).
the bar that we use from wehrs machine, has a turn buckle so that you don't have to unbolt the j-bar from the mount or slider each time you want to adjust length (every time you adjust angle), making it very simple.

we have found it to be extremely important to maintain a constant side-to-side measurement of the rear end whenever you change bar angle,even an 1/8" matters.

tornadotip
Dirt Roller

Total posts: 5
posted February 10, 2005 06:27 AM  
they also have a jbar with a screw in insert on the straight end, then the heim goes into it. they have them at shaw race cars. Its a nice piece. that way the heim isnt out to far and less likely to break.

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