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Author Topic:   Having problems with a harris!!!!!
farmer334
Dirt Roller

Total posts: 23
posted August 05, 2002 10:06 PM
Hey guys, I am in need of some assistance. I have a 99 harris, and the car keeps acting up. I have been having problems with the car pushing real bad, and now, the car will go from loose to tight, then back to loose, I mean real loose. I am also having problems getting the car to lift. I run on a half mile, semi banked clay track, here is the layout of the car.

lf-550 sprg, 76 shock
rf-650, 77-4 shock
rr-200, 94
lr-225, 93
cross-50.6
left- 52.8
rear-55.5
it is a 3 link set up with long pull bar, the panhard bar is behind the rear end, and it is long. I have a inch and a quarter stagger on the rear.thanks for your time and help guys.

2nd2none
Dirt Maniac

Total posts: 193
posted August 05, 2002 10:13 PM
does it act differently everytime you go into the turns? Like going into 1 one time it will push and next time around it goes in loose? If this is the case, check your rearend and make sure it is not bent.

Gene
Dirt Maniac

Total posts: 183
posted August 05, 2002 11:25 PM
Sounds like something is bound up. Check for froze-up shock, and pan-hard bar bind.

autoshop
Dirt Full Roller

Total posts: 65
posted August 06, 2002 12:33 PM
Check your rear sliders and make sure they are not bound up .

wdf
Dirt Newbie

Total posts: 4
posted August 06, 2002 02:05 PM
i also run 99 harris. if rr spring is behind housing, try moving it ahead. i have also cured mid corner push with more stagger (3 inches). i would also take split vaive shock off rf. also were is the torque link left to right? more to right will help if tight more to left if loose. remember to try 1 thing at a time.

farmer334
Dirt Roller

Total posts: 23
posted August 06, 2002 03:11 PM
everything on the suspension is new, the rear end housing is new, I checked, and nothing seems to be bound up. What would be the best hole to mount the trailing arms in, they are both in the top now, thinking about puting the left arm in the center, would this help with the problem: thanks for your help

Mudrat454
Dirt Roller

Total posts: 17
posted August 07, 2002 12:06 AM
wdf,
If you move the right spring from behind to infront of rearend does it change any of the static settings as far as wheel weights or anything? I am thinking of swapping it for the heat and swap it back for the feature? I have a 98 Harris with 99 updates.

wdf
Dirt Newbie

Total posts: 4
posted August 07, 2002 08:46 AM
yes it does. going from front to back i take out 12 turns on the slider. i also am running a 225 spring on rr when behind. i used to change back and forth, but now leave it behind all the time and adjust other things that are easier.

wdf
Dirt Newbie

Total posts: 4
posted August 07, 2002 08:50 AM
farmer334, trailing arms should both be in center hole for a neutral setting. up on left tightens car and down on right tightens. if you don't have a harris setup book you should call them and get one. let me know if you need the #.

CUSTOMPERFORMANCE
Dirt Freak

Total posts: 464
posted August 07, 2002 05:38 PM
I would drop the split valve shocks and run a 75 and 76 in front and a 93 lr and 94 rr. Run the left trailing arm in the top and rr in bottom, one thing to get more bite is to change the lr trailing arm frame plate with 5 holes on the same index as the 3 hole so you can run more angle in the lr. I am running 15-20 deg in the lr and only about 5 in the rr and i have all the bite i need even when it slicks up.

farmer334
Dirt Roller

Total posts: 23
posted August 07, 2002 06:10 PM
Thanks for the help guys, I ran up to the track last night, and ran it for a while after I changed some of the stuff ya'll talked about, and the car seemed better, but it is still going from tight to loose, I am going to move the rr slider to the rear and see if that helps. should I run a heavier spring if I move it to the rear?

CUSTOMPERFORMANCE
Dirt Freak

Total posts: 464
posted August 07, 2002 07:27 PM
Also maybe run more cross % like 52-53% and se if it helps.

Dirt2race
Dirt Full Roller

Total posts: 40
posted August 11, 2002 03:50 PM
Any car that is tight will be loose on exit and a real tight car will be loose in the middle also. Check the lead in the rear end. Put your trailing arms in the center holes. If the car needs more bite, move the left to the top hole. If more is needed, move the right to the bottom hole...... When trouble sooting handeling problems, you have to fix the entry problem first, then fix the middle and last fix the exit. You can't make the car run through the middle good or exit good until it enters good.

autoshop
Dirt Full Roller

Total posts: 65
posted August 12, 2002 11:28 AM
Guys needs some advise, My car has a throttle push . It gets in and thru the corner fine but upon throttle is pushes pretty bad.I have to lock the brakes down to keep it from pushing. I have the both rear lowers trailer arms in the center hole. Should I run the rr in the top hole or go to a stiffer 5th spring. Currenty I'm running a 275 in the back hole on the fifth spring. The springs in front are 650 lf 750 rf in the rear are 225 lr in front of rearend and 175 in back of rearend. It has 52ls 51.5 cross 59.5 rear weight. the travel on the shocks are 2 lf 2.5 rf 2.5 lr 3 rr Any ideas guys.

Dirt2race
Dirt Full Roller

Total posts: 40
posted August 12, 2002 05:02 PM
I would say drop the LR spring 25lbs. See if that frees up the car off. If it does, but not quite enough, drop it 25 more. Try not to play with the trailing arm until it is absolutly necessary, as this will change the entry of the car. Always remember, the RR gets you in the corner, the LR gets you out.

autoshop
Dirt Full Roller

Total posts: 65
posted August 12, 2002 06:16 PM
I'll try that. The trailer arms were in the top holes both sides but I lowered the right side first because the track was drying out. Then lowered the left one to free up the rear of the car. It was better with the trailer arms in the center holes for about 10 laps then if went back to pushing off the corners under thottle.

LITTLEMAN
Dirt Maniac

Total posts: 130
posted August 12, 2002 11:31 PM
Farmer 334,Your front springs sound pretty soft for a half mile track,you sure your not runnin out of shock travel on the right front creatin a push or the lower a frame bottoming out on the inside of the frame?does the push loose condition depend on how you enter the corner?how rough the track?A little stiffer in the front should stabilize it from transfering alot onto the right front.good luck

workin it
Dirt Roller

Total posts: 11
posted August 13, 2002 12:41 AM
I don't know about the second guy who told us his specs, but for the thread starter with the harris.....spend an afternoon putting in bracketry for a j-bar. In my situation I typically had a midcorner and/or throttle push, and it helped a bunch to get rid of long panhard behind housing. It wasn't consistent enough for me and the change doesn't require much work. Try 4 inches of rake in j-bar from heim to heim...

GnarlyCar
Dirt Newbie

posted August 13, 2002 09:52 PM
Farmer,
From the look of your setup and what you've described, I'm gonna guess you gotta drive the car in really hard and really deep and throw it to make it turn, and then it gets loose getting off. I'd have to say the easiest and cheapest solution would be to bump your crossweight to about 52-53% and add about an inch of stagger. It'll drive a lot different in that you won't wanna drive it in quite so hard, but it'll be much faster thru the middle of the corner, and you won't be baking the tires getting off as bad because you'll have a little more momentum getting off the corner. The crossweight change itself would probably cure some of what you're describing, but the fact that you're only running an inch and a quarter stagger tells me you've got to spin the tires to make it turn through the middle, and they're gonna keep spinning all the way through, creating a nasty loose condition once the car really decides to turn. Just because you've got your foot to the floor doesn't mean the car's going as fast as it can, it just means the tires are spinning as fast as they can. Run a little more stagger and pedal the car a little through the middle of the turn and you might be surprised how much quicker to can be.

Also, unless you're running both rear springs on swingarms or any other way in front of the rear end, they look a bit stiff.. I run both springs on top of the rearend on my 4-bar and they're LR 160, RR 175. I'd mess with the crosswieght and stagger first, though.
It never hurts to say it again..fix the problems in order: corner entry first, then midturn, then exit. If it ain't gettin in right, don't worry about midturn or the exit until it is. A lot of times if you fix the entry, the midturn and exit fix themselves.

Or I might be all wet...
Matt

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