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Author
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Topic: Front suspension problem(kind of)
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kid vishus
Gearhead Posts: 1994
From: huh?? what? who? ME!?!?!?!
Registered: Oct 2000
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posted 11-25-2000 06:28 PM
   
OK, I know there are a lot of guys here real good at making HP, but how about this:My '69 fastback racecar has the stock shock towers and export brace up front. I am using the stock 6 cyl springs and Koni adj shocks set about as loose as you can go. The problem is when the car comes down from wheelstanding( at the ET finals we had corrected alt of -1200 ft and the car was leaving with the tires a foot off the ground) the springs bottom out real hard. I am using limiters to control the amount of tire hang and plan on putting a bumper under the bottom a-arm but would like to hear anyone else's ideas. I really like the way the car sits with the six banger springs and don't want to raise the front with different springs. Plus I am afraid a diff(stiffer) spring will lose the weight transfering ability it has now.
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Moneymaker
Administrator Posts: 11493
From: Lyons, IL, USA
Registered: May 99
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posted 11-25-2000 08:37 PM
The problem is probably not in the front springs KV, but in the converter. It's probably locking up too soon and causing the car to fall off earlier than it should. Also, just as a side bar, I had a lot of problems with my front Koni shocks. They did not rebound proporly. That's when I switched to the HAL product. The car would lift the front end three feet and then bounce (or porpoise) real bad when it came down. This is after I sorted out my torque converters.  Alex------------------
Alex Denysenko Co-Administrator and Moderator
Fleet of FoMoCo's too long to list!
http://superstockers.homestead.com/week.html
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kid vishus
Gearhead Posts: 1994
From: huh?? what? who? ME!?!?!?!
Registered: Oct 2000
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posted 11-25-2000 08:45 PM
The car carries the front end out nice but it does bounce bad when it comes down. I can actually bottom the springs out coming out of the water and getting on the brakes real hard. I believe the springs are the original factory springs that were put in the car in '69 so they might be wore out. If you push hard on the fender, the second push you can physically bottom it out.
I have the front of the car lightened up quit a bit and it bounces hard enuff that with the big motor it would actually try to pick the tires back up again, but I also had the wheelie bars set too low, so I took them off when I switched motors.
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Moneymaker
Administrator Posts: 11493
From: Lyons, IL, USA
Registered: May 99
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posted 11-26-2000 12:12 PM
One thing that I can suggest is to install a 1/2 inch rubber A/C spacer under the coil spring. I have one on MM. After trying several front springs, I returned to the ORIGINAL 289 HIPO HD front suspension springs that came with the car and added the spacer as they were a little fatigued. Those springs have worked the best for me. Alex------------------
Alex Denysenko Co-Administrator and Moderator
Fleet of FoMoCo's too long to list!
http://superstockers.homestead.com/week.html
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Capri
Gearhead Posts: 1163
From: Lyons, ILL, USA
Registered: May 99
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posted 11-26-2000 04:49 PM
We have a set of brand new Mr GAsket ones in stock if you cant get your hands on em anywhere. I got the for the Capri, but realized I didnt need em. If you elect to change shocke, and want to get the Hals, Email either Me or Dad. Tony
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Ryan Wilke
Gearhead Posts: 607
From: Stanton, Michigan
Registered: Oct 2000
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posted 11-27-2000 08:54 AM
KV,
If you don't want to spend $$ in a different converter or shocks right away and you wouldn't mind doing a little experimenting some AND if you are thinking that you'd like a little stiffer front spring without loosing your stance, I'm thinking you might get the look and the stiffer spring you seek by cutting a coil off of a 302/351W coil spring. I have cut 351W coils under the front of my '69 with a 302/4spd and I like the look and it doesn't bottom out as you discribe yours does....just a thought.
Later,, Ryan ------------------
The '3-Pedal Attitude' Kid
in a '69 FB w/ 306 now, but
the 460+ is coming... :D
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jkilroy
Gearhead Posts: 1289
From: Austin, TX
Registered: Dec 99
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posted 11-27-2000 05:09 PM
Do you have the double adjustable Koni's? You need a firmer shock on compression, isn't that what 90/10's are supposed to do?------------------
Jay Kilroy
68' Fastback GT 390
"No such thing as a cam thats too big"
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kid vishus
Gearhead Posts: 1994
From: huh?? what? who? ME!?!?!?!
Registered: Oct 2000
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posted 11-27-2000 05:10 PM
Ok, did some checking on the car and a little checking in the archives(thought about it),the shock on the drivers side wont adjust and its a whole lot looser than the other. Whenever the car bottomed out coming out of the water it was always the drivers side that would clunk. I had called HAL and they don't make a front shock that fits my car, they have to send them to a custom shop and they alter them so they fit the stock mounts. However,I have a buddy with a '69 with a pair on it and he said he would sell me his for less than cost( he built a new car and wants to put the stang back on the street). I think I'll try that plus put some bumpers under the a-frames just in case.Corruption Inc. Racing
(I still like that)
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Moneymaker
Administrator Posts: 11493
From: Lyons, IL, USA
Registered: May 99
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posted 11-27-2000 05:13 PM
KV, we convert HAL shocks in case your deal falls through. Alex------------------
Alex Denysenko Co-Administrator and Moderator
Fleet of FoMoCo's too long to list!
http://superstockers.homestead.com/week.html
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TomP
Gearhead Posts: 3609
From: Delta BC Canada
Registered: Dec 99
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posted 11-27-2000 06:33 PM
geez...my car always lands soft...ya cant get anything for the 64 Fairlanes front springs just the original huge heavy,but weak big monsters,my car rides almost bottomed out.But doesnt bottom hard on a run.I'd say take the travel limiters off,and probably set the wheelie bars further off the ground if its being pushed back down too hard.Besides...its more fun that way! 
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kid vishus
Gearhead Posts: 1994
From: huh?? what? who? ME!?!?!?!
Registered: Oct 2000
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posted 11-27-2000 09:04 PM
TomP, The wheelie bars haven't been on the car since July 4th weekend. And you are right, it is definately more fun that way, plus it gets a lot more attention. I'm hoping that the bad shock is the culprit, that's an easy fix.
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Capri
Gearhead Posts: 1163
From: Lyons, ILL, USA
Registered: May 99
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posted 12-19-2000 05:34 PM
Just wondering here. Did you get the shocks off and have them looked at????Tony
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kid vishus
Gearhead Posts: 1994
From: huh?? what? who? ME!?!?!?!
Registered: Oct 2000
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posted 12-19-2000 05:52 PM
I took them off and the one on the drivers side wouldn't adjust anymore. So I decided that I'm going to buy some Hals for the front and ditch the Konis. They look like they are a lot easier to adjust, not having to take them off the car and all like the konis.
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