View Full Version : front suspension limiters


parish8
12-24-2004, 06:50 PM
i made a set, not real prety and dam my truck is dirty underneath :emb:

anyway, here are some pic's, i have them set of minimum restricition right now. figured i would start there and then tighten them up. i may need to add a gusset but i dont think there is much force there so i will try it like it is for now.

i have about 1/2" of extra studd so i can move up the bump stop and then i have a set of taller bump stops too so i can really restrict it if i want.

going for a test run here in a little bit. i would be suprized if i picked up any 60 but if it is smoother i will be happy. smoother first, then some stickier tires.

pics >> http://www.neufamily.org/images/frontendlimit/

http://www.neufamily.org/images/frontendlimit/DSCN2215.JPG
http://www.neufamily.org/images/frontendlimit/DSCN2222.JPG

Keith
12-24-2004, 07:07 PM
Looks nice. I would gusset them with a little triangle just to be safe though. I bet those torsion bars have some strength to 'em.

parish8
12-24-2004, 07:11 PM
yeah, i might do that before i roll. after looking at the pic's i decided it needed to be tighter so i shimed the bump stop a little. probably go gusset it before i go for a test drive, it fells strong and all but just doesn't look like enough.

http://www.neufamily.org/images/frontendlimit/DSCN2227.JPG

parish8
12-24-2004, 08:00 PM
woohoo, if feels much better. i made about 10 short pulls near my house and they were all in the mid or lower 1.8's. best of 1.80. i am still spining but it is much more controled. lifts a little and goes. did one 0-60 and got a 1.85 60' and 3.65sec 0-60.

it drives fine so i am going to tighten them up some more and see what happens. i wish i had some metal i would go ahead an make the traction bars for the rear.

i am spining quite a bit still, i think consistant 1.6's are in the bag with tires. no nitrous.

Snake Eater
12-24-2004, 08:08 PM
Looks like a good idea. Did you ever think about swapping the shocks out with solid rods with rubber bushings? It would limmit the front to within just 1/2" of travel.

Just for track use only of course.

Snake Eater
12-24-2004, 08:11 PM
Also, take some before and after measurements for the limmiters. Like at the fender well ride hight, then lifted till the tire starts to leave the ground.

After the limmiter is adjusted remeasure. Just so we know how well it works.

parish8
12-25-2004, 12:15 AM
whoa!! :eek2: just pulled a 1.73 60' on cold firejunks, it is about 25deg out there.

i like the limiters, i can't feel them at all just driving around. when i hammer it out of the hole it peals out like mad but it isn't violent so i just stay in it an woohoo, pull a prety good 60' for as cold as it it. i am going to post up some screen shots in the 408 report post.

BlownChevy
12-25-2004, 12:30 AM
Pretty good idea if you ask me.....what gauge steel are you using?

parish8
12-25-2004, 12:35 AM
not sure, i think it was 3/16" or so. i went for a ride before i put in the gussets and it bent them a little right away. doh!

i put in some 1/4" steel gussets on eash side of the pad, it turned out prety ugly but it should be strong.

i am really suprized at how tight i have them and i can't feel them just driving around, i cant even really feel them when i floor it other than the truck just doesn't lift as much, no harsh stop or anything like that.

BlownChevy
12-25-2004, 12:43 AM
I wonder if there is a market for those....Might want to look into it. I think thicker gauge steel may be needed, I wonder how much TQ those are getting off the line.

parish8
12-25-2004, 01:27 AM
I wonder if there is a market for those....Might want to look into it. I think thicker gauge steel may be needed, I wonder how much TQ those are getting off the line.

they shouldnt see any tq, just have to hold up the weight of the wheels.

BlownChevy
12-25-2004, 01:34 AM
they shouldnt see any tq, just have to hold up the weight of the wheels.


I thought you were using them to keep the suspension travel to a min under hard launches......

parish8
12-25-2004, 01:42 AM
I thought you were using them to keep the suspension travel to a min under hard launches......

yep, the truck has a lot of weight transfer and the front comes way up. eventualy it peals out and all of the suspension unloads and it comes down hard on spining wheels, then hooks again. prety violent.

with the suspension limiters it just comes up a few inches and stays there, the wheels spin but it is a more uniform spin without the loading and unloading of the suspension. the way i see it they just have to hold the wheels from droping as far. no motor tq on them but there is the tortion bar spring against them. with the gussets i put in they should be fine.

i didn't expect any reduction in 60' figured it would just be smoother but it is geting out of the hole much better. seems like it is time for some stickier tires.

Keith
12-25-2004, 04:04 AM
You have to hold up all of that unsprung weight, and the twisting of the unwound torsion bars too. Thats probably what bent them that little bit.

Glad to see that they worked for you.

BlownChevy
12-25-2004, 08:36 PM
Any updates on progress?

parish8
12-25-2004, 09:03 PM
nothing new, i would call the suspension limiters a sucess, being able to hammer it out of the hole is soo much easier than trying to roll into it at the just right rate.

not sure what is next for the truck, tires would be nice. some testing with better fuel maybe but i would rather save that for the track or dyno or at least a good race. not sure if you saw my post in the FI section but i am thinking about trying to hook up a complete 2nd set of injectors and running race fuel thru them. pump gas up to 8psi and then let the megasquirt phase in race fuel. now that would be sweet.

BlownChevy
12-25-2004, 09:05 PM
nothing new, i would call the suspension limiters a sucess, being able to hammer it out of the hole is soo much easier than trying to roll into it at the just right rate.

not sure what is next for the truck, tires would be nice. some testing with better fuel maybe but i would rather save that for the track or dyno or at least a good race. not sure if you saw my post in the FI section but i am thinking about trying to hook up a complete 2nd set of injectors and running race fuel thru them. pump gas up to 8psi and then let the megasquirt phase in race fuel. now that would be sweet.

Yeah that would be sweet....

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