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Author Topic:   4 bar z-link swing arm
xtremepro99
Dirt Roller

Total posts: 11
posted July 20, 2004 10:39 PM  
have pro chassis 4 bar left side swing arm z-link rs what are some good springs to run in rear have panhard bar behind r.r. in middle of housing

NJantz
Dirt Forum Champ
Total posts: 755
posted July 21, 2004 06:59 AM  
LR 250, RR 225 for small med. banked 1/4mile tracks.

[This message has been edited by NJantz (edited July 21, 2004).]

hms
Dirt Roller

Total posts: 16
posted July 22, 2004 10:16 AM  
I have the same thing it is a 03 z/4
we started running a 16inch 175# spring on the lr and 200 on the rr

with nova lowers and metric spindles I run 900 rf and 700lf and the car seems to be working very good we have been on wet banked tracks and flat dry tracks and with a little panhard angle adjustment and wheel offsets the car comes right in

as far as the weight percentages even on front and 25#s of bite in lr

we tried the heavy springs last year and the car was not consistent on entry with the tall spring, it loads and unloads softly
the left rear is hardly on the spring anyway most of the time it is on the bars

xtremepro99
Dirt Roller

Total posts: 11
posted July 22, 2004 10:01 PM  
Are you guys still runnin the same 16 inch springs. or same numbers and also is your top 4 bar shorter than your lower and if so what are some good adjustments to make when it goes dry slick.

hms
Dirt Roller

Total posts: 16
posted July 23, 2004 06:44 AM  
Yes we are still running the same 16 inch 175 on lr, the rr is a 200 13 inch.
the top link is shorter.
top link on the lr is in 2 or 3 hole up and the lr lower is in top hole. for dry slick we move lr wheel out 1 to 2 inches depending on how dry also put more angle in pan hard 7 to 10 degrees down towards rr.
make sure your bird cages is indexed so top is behind bottom 3/8 of an inch

sometimes we add 25#of lead right above the rr to give more side bite

let me know if this works for you

xtremepro99
Dirt Roller

Total posts: 11
posted July 23, 2004 06:49 PM  
I will def. try this and thank you very much for the info. Just had one question and that is my r.r. spring is also a 16 200 will that change anything.

WPP
Dirt Freak

Total posts: 451
posted July 23, 2004 07:28 PM  
hms how are you looking at the birdcage i always thought you tilt the birdcage foward at the top standing at the left rear did you mean to tilt it back at the top . But i can see when running the shorter upper link it will index forward more. thanks

hms
Dirt Roller

Total posts: 16
posted July 26, 2004 06:53 AM  
I have been putting the top of both birdcages toward the back of the car 3/8's of inch I haven't tried going forward. I am running a 13 200 but I think the 16 inch would keep it from coil binding

extremepro99 did you run this weekend

xtremepro99
Dirt Roller

Total posts: 11
posted July 26, 2004 08:10 AM  
No got rained out. gonna make to a prac. this week though and try it all out.

hms
Dirt Roller

Total posts: 16
posted July 26, 2004 01:06 PM  
where do you race we rained this weekend.

xtremepro99
Dirt Roller

Total posts: 11
posted July 27, 2004 07:45 PM  
If you guys could let me know one other thing and that is what are some good shocks to run, also i heard about a good shock to run on the left rear to help plant it better just want to know if this would help. The swing arm on the right side which is what the spring is on i got three holes and right now i am in the middle one and have not changed it for any track conditions just wonderin if that would help out any. Thank you guys for the input.

hms
Dirt Roller

Total posts: 16
posted July 28, 2004 02:31 PM  
I am running a 94 on the rr and a 95-3 on the lr I am thinking about going to a 96-2 to hold the lr up when I lift off the gas

If you move the front bar on the swingarm up hang on you will have a ton of roll steer
I did this one time at harlan ia it is a very long track I dont think i was ever straight.

play with the rear bar top hole when it is slick and middle when it is tacky.

xtremepro99
Dirt Roller

Total posts: 11
posted July 28, 2004 07:14 PM  
How do you feel about front shocks, do u want an easy up on the left front or no. And maybe what are some good shock numbers for the front. thank you

hms
Dirt Roller

Total posts: 16
posted July 29, 2004 06:21 AM  
75-3 lf 76 rf I haven't tried any others

hms
Dirt Roller

Total posts: 16
posted August 02, 2004 01:25 PM  
Did you run this weekend and did any of this work

xtremepro99
Dirt Roller

Total posts: 11
posted August 02, 2004 05:09 PM  
Yeah ran this weekend and it ended up gettin real dry in the main. The car had some good forward off the corners but a little loose gettin in. I was wonderin if some of my spring numbers in the back are effectin the car i have a 175 lr 200 r.r. I only had the top four link up to 3 hole, maybe should of went more. I also have a brake floater on the r.r.

hms
Dirt Roller

Total posts: 16
posted August 03, 2004 06:48 AM  
we were getting very loose in sat I think I should have lowered the panhard a couple of teeth on the rear end side. You can also move the rf out this will tighten you up getting in.

we found the spring mount on the left rear was bent up for some reason it is bottoming out hard keep an eye on yours with that 175 spring I think my spring might have flattened out?

xtremepro99
Dirt Roller

Total posts: 11
posted August 03, 2004 08:04 AM  
i meant i have brake floater on l.r. only and i was runnin panhard bar on r.r. on bottom hole because it mounts behind r.r. and about 3 or 4 inches up on frame.

hms
Dirt Roller

Total posts: 16
posted August 06, 2004 09:33 AM  
When it is on the back it will losen you up getting when the pinion drop under deceleration it raises your roll center.
In this situation try moving the rf wheel out 1 inch if it is still loose in make sure the rear is square to the front, or change the rf shock go one number slower or heavier the bigger the number the slower the weight transfers you could even speed up the rr shock go to a 93 good luck

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