lca relo
I don't use them, but I don't need them... They can help a car hook. So can better tires, better LCA's, better TA's etc. I don't know what's done to the car now, what's going on with it (might not hook badly, but sometimes folks just have to have it all).
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Results matter. Talk is cheap. We are miles beyond the success anyone else has had with the 4th gens, and C5, C6, C7 Corvettes,
10 SCCA Solo National Championships, 2008 Driver of they Year, 2012 Driver of Eminence
13 SCCA Pro Solo Nationals Championships
2023 UMI King of the Mountain Champion
LCA brackets could help, a TA could help. Could make it worse. The chatter is a bit of wheel hop/tire shake. By moving the instant center rearward like LCA's in lower holes do, you could stop it by planting the tires harder which could bog the car. Or you might make it worse if you gain a little traction but can still spin the tires, just not enough to SPIN them and that can make the shake worse.
LCA brackets are inexpensive and certainly easy to try. Not ideal in lower holes for stability, but that's easily changed for street driving if you see fit. We sell UMI parts, you can find links here: http://www.stranoparts.com/searchbym...D=18&ModelID=7
LCA brackets are inexpensive and certainly easy to try. Not ideal in lower holes for stability, but that's easily changed for street driving if you see fit. We sell UMI parts, you can find links here: http://www.stranoparts.com/searchbym...D=18&ModelID=7
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www.stranoparts.com --814-849-3450
Results matter. Talk is cheap. We are miles beyond the success anyone else has had with the 4th gens, and C5, C6, C7 Corvettes,
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Said he has boxed arms. I guess they could be stock with stock air-gap bushings which could be an issue.
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Results matter. Talk is cheap. We are miles beyond the success anyone else has had with the 4th gens, and C5, C6, C7 Corvettes,
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13 SCCA Pro Solo Nationals Championships
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www.stranoparts.com --814-849-3450
Results matter. Talk is cheap. We are miles beyond the success anyone else has had with the 4th gens, and C5, C6, C7 Corvettes,
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Verdad Gallardo i got my factory arms boxed and put in energy suspension bushings. i dont think it will bog with 4000 stall. not sure if you knew it is an auto. boxing the arms helped keep the rear planted but now it just spins instead of hopping. havent tried lauching with my slicks yet but i think it will be an improvement. im definatly getting a torque arm relo kit because i have already broken one tailshaft housing and not looking for another. who makes a decent one?
^^UMI makes a good design.
I'm waiting to recieve my LCA reloc. in the mail. I have Boxed arms, Adj. PHB, BMR short T/A. I'll let you know if they help. I do get quite a bit of chatter in first.
I'm waiting to recieve my LCA reloc. in the mail. I have Boxed arms, Adj. PHB, BMR short T/A. I'll let you know if they help. I do get quite a bit of chatter in first.
i got my factory arms boxed and put in energy suspension bushings. i dont think it will bog with 4000 stall. not sure if you knew it is an auto. boxing the arms helped keep the rear planted but now it just spins instead of hopping. havent tried lauching with my slicks yet but i think it will be an improvement. im definatly getting a torque arm relo kit because i have already broken one tailshaft housing and not looking for another. who makes a decent one?
__________________
www.stranoparts.com --814-849-3450
Results matter. Talk is cheap. We are miles beyond the success anyone else has had with the 4th gens, and C5, C6, C7 Corvettes,
10 SCCA Solo National Championships, 2008 Driver of they Year, 2012 Driver of Eminence
13 SCCA Pro Solo Nationals Championships
2023 UMI King of the Mountain Champion
www.stranoparts.com --814-849-3450
Results matter. Talk is cheap. We are miles beyond the success anyone else has had with the 4th gens, and C5, C6, C7 Corvettes,
10 SCCA Solo National Championships, 2008 Driver of they Year, 2012 Driver of Eminence
13 SCCA Pro Solo Nationals Championships
2023 UMI King of the Mountain Champion
All you can do is try it. If you buy used bolt-ins then you can
at least resell them at no loss.
If you go too far with geometry you will find wheel hop in
reverse, or brake hop. This is bad; forward wheel hop only
spoils your fun or maybe breaks a stock rear end. Brake hop
is safety critical, potentially. If you start to find more ABS
action under panic braking (find a parking lot, try standing
on it from 40MPH) you might need to readjust / compromise.
I think wheel hop involves more than geometry. You need a
tire compound with the right (wrong) kind of stick and release.
A setup that plants them hard, loads up the suspension big
time, then loses it all once the transient begins to relax has
the potential to magnify wheel hop over one that is more mellow
and just lets the tires smear. Or instead of a little "chatter" you
get a slower, heavier and possibly more hurtful (because the
energy per bang is bigger) hop. Anyway, put the track tires on
and you may find a very different "hop" behavior
So I recommend trying it with the used relos and see; make sure
you have enough shock to scrub off resonant bounce and try the
two geometries comparing to stock, see what does it for your
setup. Or setups if you run different tires for track than street.
at least resell them at no loss.
If you go too far with geometry you will find wheel hop in
reverse, or brake hop. This is bad; forward wheel hop only
spoils your fun or maybe breaks a stock rear end. Brake hop
is safety critical, potentially. If you start to find more ABS
action under panic braking (find a parking lot, try standing
on it from 40MPH) you might need to readjust / compromise.
I think wheel hop involves more than geometry. You need a
tire compound with the right (wrong) kind of stick and release.
A setup that plants them hard, loads up the suspension big
time, then loses it all once the transient begins to relax has
the potential to magnify wheel hop over one that is more mellow
and just lets the tires smear. Or instead of a little "chatter" you
get a slower, heavier and possibly more hurtful (because the
energy per bang is bigger) hop. Anyway, put the track tires on
and you may find a very different "hop" behavior
So I recommend trying it with the used relos and see; make sure
you have enough shock to scrub off resonant bounce and try the
two geometries comparing to stock, see what does it for your
setup. Or setups if you run different tires for track than street.
TECH Resident
Joined: Oct 2005
Posts: 781
Likes: 0
From: Taxme, Ohio
Looking at your 60' time I don't think my experience is too useful but here's what I have. Tires really hopped hard after I lowered the car 1.2" which turned out to be 2 inches. I replaced the LCAs and installed relo brackets; putting the arms in the lowest position. The arms are almost perfectly parallel to the chassis now. The result is that although the tires spin frantically in 2nd gear, I have not experienced the violent hop I had before. Actually I have no hop whatsoever - for me the brackets worked....
i would like to get a umi relo kit for the torque arm but to my knowledge they dont make them for my car. its a thirdgen. 1986. i cant use used bolt in relocation brackets for my lcas because noone makes them for a 12 bolt moser. kind of screwed all the way.
sure, it's a bit more work, but IMO, i think it would be worth it. you should also be able to set them to the stock setting if needed, or if it doesn't help....but i can't imagine that it wouldn't help at least a little.
Plan and simple they work especially if you have a lowered car. I purchased a set for my new 9" when I got it. I also got new panhard and lowers that are poly/rod 3 point sub frames and a floor mount torque arm at the same time as well as a alum drive shaft from Bob at EPP.
The car is lowered and before all the work this summer if I hammered it at low speeds it would get sideways almost every time I stood on it. After all the parts it really doesnt spin in first anymore and barely spins going into second. This is an auto by the way with 3.70 gears. I can launch at the track ***** to the wall and just barely spin if at all off the line but I still spin hitting second partially because the car is set to shift hard into second. The drag radials I am putting on next year will help this hopefully. But for running street tires on a basically stock motor car I cut good sixty foot times. 2.0XX or 2.1XX not bad for kdws 275 40 17.
What ever you do call Sam and talk to him he will likely be able to tell you what you need to hook up the car. If nothing else call Sam and order the parts he treats you right. Plus I like to help out the middle man instead of giving all my money direct to the manufacture. If it wasn't for the commision checks I make from being in the middle of sales I not only wouldn't have been able to buy all the parts for mine this year I wouldn't be able to afford the car to start with.
Lastly and most importantly UMI makes good products.
The car is lowered and before all the work this summer if I hammered it at low speeds it would get sideways almost every time I stood on it. After all the parts it really doesnt spin in first anymore and barely spins going into second. This is an auto by the way with 3.70 gears. I can launch at the track ***** to the wall and just barely spin if at all off the line but I still spin hitting second partially because the car is set to shift hard into second. The drag radials I am putting on next year will help this hopefully. But for running street tires on a basically stock motor car I cut good sixty foot times. 2.0XX or 2.1XX not bad for kdws 275 40 17.
What ever you do call Sam and talk to him he will likely be able to tell you what you need to hook up the car. If nothing else call Sam and order the parts he treats you right. Plus I like to help out the middle man instead of giving all my money direct to the manufacture. If it wasn't for the commision checks I make from being in the middle of sales I not only wouldn't have been able to buy all the parts for mine this year I wouldn't be able to afford the car to start with.
Lastly and most importantly UMI makes good products.