When is a back brace (9") needed. How fast do you run?
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From: Rochester, NY
When is a back brace (9") needed. How fast do you run? Looking for info on this.
I've seen some really fast cars that have had a normal non fab9s without a back brace. running 9's 8.50s. Lighter, auto, cars. fox bodies, and stuch.
But then I see ton of guys getting very nice MWC/ other big money fab9 setup that I know probally don't need all that. I'm not sure on our setups with the TA on the center, and the LCAs on the outisde how much its needed? I can see it on a leaf spring/4link/latter bar car what had everything mounting on the housing tubes. But we don't, so I would think its that big of a concern? Its also a cost and weight saving, not neededing on . My car isn't heavy, But I lauch pretty hard with the t56 6500+.
I'm changing to a 9ich and thinking if I'd need one or not? Looking to get it lighter the s60. around 150#
alum center/spool/35+ light axles/ narrowd. going to a anti-rool bar (lighter) and making a lighter style 4130 TA, direct mount
I've seen some really fast cars that have had a normal non fab9s without a back brace. running 9's 8.50s. Lighter, auto, cars. fox bodies, and stuch.
But then I see ton of guys getting very nice MWC/ other big money fab9 setup that I know probally don't need all that. I'm not sure on our setups with the TA on the center, and the LCAs on the outisde how much its needed? I can see it on a leaf spring/4link/latter bar car what had everything mounting on the housing tubes. But we don't, so I would think its that big of a concern? Its also a cost and weight saving, not neededing on . My car isn't heavy, But I lauch pretty hard with the t56 6500+.
I'm changing to a 9ich and thinking if I'd need one or not? Looking to get it lighter the s60. around 150#
alum center/spool/35+ light axles/ narrowd. going to a anti-rool bar (lighter) and making a lighter style 4130 TA, direct mount
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I think I should look into what housing too. I just started looking at the quick performace setup, and looked good for the price. But looks like a stock style with the tubes not braced that well inside, is the only thing I don't like on it.
But not sure how much is needed really?
I would love to get a racecraft housing, but I htink its way more then what I need right now.
http://yellowbullet.com/forum/showthread.php?t=195250
But not sure how much is needed really?
I would love to get a racecraft housing, but I htink its way more then what I need right now.
http://yellowbullet.com/forum/showthread.php?t=195250
Last edited by studderin; Dec 26, 2009 at 02:07 PM.
The one I built was 154 lbs, back-braced. From what Ive been told by a guy who runs low 8's high 7's, it helps alot on cars with alot of shock, which we have with m6's should we ever make some decent power.....
Here's the one I built:
Here's the one I built:
Then I had a problem bending double adjusters, so I made an ultra duty one, with a custom double adjuster, 1.25" thread vs .750" thread.....
Soon as I swapped that my 60's went from 1.53, to 1.42
Problem I see with the quick time is it looks flimsy, the tubes are choked (stepped), looks like that torque arm style mount will fold under enough power in a six speed car.
Soon as I swapped that my 60's went from 1.53, to 1.42
Problem I see with the quick time is it looks flimsy, the tubes are choked (stepped), looks like that torque arm style mount will fold under enough power in a six speed car.
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wow that looks really nice! Like the slider on the TA.
did you make the brakets? what housing in that, mild? you have a narrwoung hit, how doe thouse shout mounts work. have any more installed pics.
did you make the brakets? what housing in that, mild? you have a narrwoung hit, how doe thouse shout mounts work. have any more installed pics.
Last edited by studderin; Dec 26, 2009 at 06:48 PM.
I would have to say to stay away from the QP housing. I've seen first hand how they turn out, and wouldn't recommend using one in a high-horse situation. Just a street cruiser, maybe, but not something that would see a trans-brake, or a manual trans.
I'd rather not go into more detail over the post, but would be willing to over pm. My advise is to simply stay away.
I'd rather not go into more detail over the post, but would be willing to over pm. My advise is to simply stay away.
Thanks
Its an extremely light but large od torque arm, 1 5/8" 4130 chrome moly, .058 wall, 1.5" x .058 and other sizes. Housing is a strange housing narrowed 4" per side.All brackets except the shock mounts I made, those are competition engineering coil over shock mounts, which I have strange SA coil overs on.
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you have anymore pic? I like the way the LCA brackets are just the side plates. with the bolt in them, I dont think there going anywhere unless the panhardrod bends off or somthing stupid. Nice and simple.
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I can understand wanting to save weight, but if I were going to make big power, I wouldn't risk some weight on the "well it should be ok" philosophy.. Also, you could gun drill the axles to save a little..
I don't think the backbrace is needed for anything more then about 600 hp, say with a 3500 lb car... but anymore then that with a stick tranny and a slick, I'd put it on there.
Studderin... I know you'll eventually end up building a big motor for the car, everyone always does...... put the backbrace on now, so you can save yourself from having a problem down the road. If you're spending the $ on a chromoly housing, mine as well have it built for a 1000 hp stick setup, so you never have to look at it again.
Studderin... I know you'll eventually end up building a big motor for the car, everyone always does...... put the backbrace on now, so you can save yourself from having a problem down the road. If you're spending the $ on a chromoly housing, mine as well have it built for a 1000 hp stick setup, so you never have to look at it again.
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From: Rochester, NY
thanks,man.
Do you know how the tubes are welded to the housing inside? Is in pretty basic like the 1st pic, or do they put a better plate gusset in there?
Do you know how the tubes are welded to the housing inside? Is in pretty basic like the 1st pic, or do they put a better plate gusset in there?
