Go Back   Corvette Forum > C3 Corvettes, 1968 - 1982 > C3 Tech/Performance
Sign in using an external account
Register Forgot Password?
Register Search Today's Posts Mark Forums Read FAQ Vendor Directory
Search
C3 Tech/Performance
V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette Sponsored by
VBP

Welcome to Corvetteforum.com!
Welcome to Corvetteforum.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Corvetteforum.com today!


Corvette Store
 
 
C7 Parts & Accessories
C6 Parts & Accessories
C5 Parts & Accessories
C4 Parts & Accessories
C3 Parts & Accessories
C2 Parts & Accessories
C1 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
  
Reply
 
 
 
 
Thread Tools Search this Thread
Old 02-18-2011, 02:37 PM   #1
elle88
CF Senior Member
 
elle88's Avatar
 
Member Since: Sep 2008
Default qa1 single adjust discontinued. and now what to buy ? help

I already have the qa1 single adj on the rear of my 69 427 ( spirited driving -road racing )

today i wanted to buy the front shocks TC1959P but they are not available anymore. just 1 left at summit, nothing elsewhere.

and now ?
the dual adjust qa1 are so expensive...and they are on back order. options ? what about koni adjustable ?
http://www.summitracing.com/parts/KO...1019/?rtype=10
any experience?
they are adjustable in rebound only
i have to buy tomorrow...

Last edited by elle88; 04-01-2011 at 01:58 PM.
elle88 is offline   Reply With Quote
Old 02-18-2011, 04:14 PM   #2
gkull
CF Senior Member
 
gkull's Avatar
 
Member Since: Apr 1999
Location: Reno Nevada
Default

How about the QA-1 R1959P did you also call "Jegs" or "QA-1" ? The koni's kind of suck as far as adjustment goes because you have to remove them to adjust and it is kind of guessing game even when you try to make a change. That is why i like QA-1

http://qa1.thomasnet.com/results/che...53&backtoname=
gkull is offline   Reply With Quote
Old 02-18-2011, 08:07 PM   #3
TheSkunkWorks
CF Senior Member
 
TheSkunkWorks's Avatar
 
Member Since: Apr 2007
Location: Graceland in a Not Correctly Restored Stingray
Default

The Koni Special D's are single adjustable in rebound, but yes you do have to remove them to adjust.
TheSkunkWorks is offline   Reply With Quote
Old 02-18-2011, 11:06 PM   #4
Solid LT1
CF Senior Member
 
Solid LT1's Avatar
 
Member Since: Dec 2003
Location: Fremont CA
Default

Quote:
Originally Posted by TheSkunkWorks View Post
The Koni Special D's are single adjustable in rebound, but yes you do have to remove them to adjust.
Koni calls the C2/3 Vette shocks Koni "Classic" style and they adjust for wear on both compression/rebound in my expirience with them. I do agree the adjustment proceedure really sucks especially the rears where you have to pull out the nylon ring from under the dust cover.

For the $$$ Koni does the job the best, the Penske's require too much maintenance for the performance they offer.

Koni North America seems to have a great sale on the Classic shocks right now, under $200 a pair!
Solid LT1 is offline   Reply With Quote
Old 02-18-2011, 11:52 PM   #5
Ray Y
CF Senior Member
 
Ray Y's Avatar
 
Member Since: Sep 2006
Location: Kalispell MT
Default

Try Van Steel. I just got a set a couple of weeks ago. Single adjust with 500# HyperCo Springs.
Ray Y is offline   Reply With Quote
Old 02-19-2011, 03:21 AM   #6
elle88
CF Senior Member
 
elle88's Avatar
 
Member Since: Sep 2008
Default

Quote:
Originally Posted by gkull View Post
How about the QA-1 R1959P did you also call "Jegs" or "QA-1" ? The koni's kind of suck as far as adjustment goes because you have to remove them to adjust and it is kind of guessing game even when you try to make a change. That is why i like QA-1

http://qa1.thomasnet.com/results/che...53&backtoname=
Do you mean these?
http://www.summitracing.com/parts/HAL-RC1959P

they say " firm compression , adjustable rebound"
possibly what i need... but i need to understand first

I have f41 suspensions and ride height. REAR qa1 single adj. they are fine , better than Bilstein SPORT that were damn stiff! I use rear qa1 at 3rd-4th click from soft. going further the 4th is unuseful

FRONT i have now Bilstein HD but too soft , too little damping , front end of car bouncing .

So ,does " firm compression , adjustable rebound" will work? I think i need firm compression to contrast nose dive when braking and dampen body roll when cornering.
softer rebound seems good because will bring down faster the inside wheel while cornering and will make easier that the tires follow the road after a bump . Am i wrong?

doubts :
-will the softer rebound will make the nose bouncy anyway?
- they say "stiff compression " . yes but how much ? being a drag race shock , how stiff are drag shocks in compression? standard like a bilstein HD or very stiff like a bilstein SPORT?
elle88 is offline   Reply With Quote
Old 02-19-2011, 10:28 AM   #7
gkull
CF Senior Member
 
gkull's Avatar
 
Member Since: Apr 1999
Location: Reno Nevada
Default

my disclaimer is that I have not used them. calling QA-1 might get a better answer.

The front spring rate determines how much ultimate front end dive you get. The compression rate of the shock slows the spring compression.

You want as little shock compression as practical. I believe that my frame rails cracked where the rear a-arm bolt attaches as a direct result of 700 pound springs and to much compression resistance on my QA-1 dual adjust.

Rebound dampening resists spring oscillation or the bouncy feel
gkull is offline   Reply With Quote
Old 04-01-2011, 01:57 PM   #8
elle88
CF Senior Member
 
elle88's Avatar
 
Member Since: Sep 2008
Default

at the end the only place where the shocks seemed available was this. otherwise discontinued

http://www.vbandp.com/C2-C3-Corvette...ml?keyword=qa1

received today . but the code on the boxes is not TC1959P, it's TS508 . I found nowhere this code... Disappointed at first , then i have checked dimensions and fitment and look fine. I put the stud in a vise and checked compression and rebound by hand and it looks that they are about the same and equally increasing while turning the ****. actually the rebound looks a little stronger than compression. i tried till the 4th click , then too hard
elle88 is offline   Reply With Quote
Old 04-01-2011, 10:41 PM   #9
Gale Banks 80'
CF Senior Member
 
Member Since: Nov 2008
Default

Call Van Steel and ask for Paul. He knows his C3's, Autocross and Shocks. If the Single ajust QA-1s really are discontinued it dosn't matter cause He is going to Talk You into the Dual Ajust Fronts anyway.
Gale Banks 80' is offline   Reply With Quote
Old 04-01-2011, 11:15 PM   #10
Richard454
CF Senior Member
 
Richard454's Avatar
 
Member Since: May 2003
Location: Atlanta GA
Send a message via AIM to Richard454
Default

Quote:
Originally Posted by Gale Banks 80' View Post
Call Van Steel and ask for Paul. He knows his C3's, Autocross and Shocks. If the Single ajust QA-1s really are discontinued it dosn't matter cause He is going to Talk You into the Dual Ajust Fronts anyway.
Paul...- from the semi-coil overs to the coil overs-" It's not that much more..."

Anyway-I just got the semi coil overs ( single adjust QA1) from Van Steel- at $569/set minus the 10% Corvette Forum discount- I think I'm gonna be real happy w/ them.
Richard454 is offline   Reply With Quote
Old 04-02-2011, 10:31 AM   #11
redvetracr
CF Senior Member
 
redvetracr's Avatar
 
Member Since: Aug 1999
Default

you couldn`t have gone wrong buying these.

http://forums.corvetteforum.com/c3-p...-bushings.html
redvetracr is offline   Reply With Quote
Old 04-16-2011, 12:50 AM   #12
gkull
CF Senior Member
 
gkull's Avatar
 
Member Since: Apr 1999
Location: Reno Nevada
Default

The pictures of the spring adjust ends for the front sways.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
gkull is offline   Reply With Quote
Old 04-16-2011, 03:16 AM   #13
elle88
CF Senior Member
 
elle88's Avatar
 
Member Since: Sep 2008
Default

Thanks Gkull
look at pics.i show the problem
wheels on the ground. there's always 1 bushing that doesn't fit perfectly in the related hole. And if i make the spring less tight is even worse

Click the image to open in full size.

Click the image to open in full size.

Last edited by elle88; 04-16-2011 at 03:31 AM.
elle88 is offline   Reply With Quote
Old 04-22-2011, 09:54 AM   #14
elle88
CF Senior Member
 
elle88's Avatar
 
Member Since: Sep 2008
Default

test drive today after fitting
-qa1 front single adj
-adjustable sway bar links

-these QA1 TS508 are really the way to go in my opinion ( already tried Bilsteins HD and sports). i have found a good setting at click 8 but i can go even harder in the setting without increasing the ride harshness. they dampen the springs in the way i like but without seriously affecting the comfort. tight ride but not harsh. i'm somewhat surprised

-adjustable way bar links.
even if they don't fit perfectly ( see above pics) they work and i like them. I believe that a big sway bar like mine requires those

-Gtr1999 steering box. Gary's job has been reported on the forum many times and i confirm that his steering box is very tight and no play ( possibly just a tiny bit but it could be something i have overlooked). Good job. i just fear that with my manual steering and the big effort in steering , the tight setting of this box could go away because gear's stress-wear

Last edited by H P Bushrod; 04-22-2011 at 08:32 PM. Reason: nsv delete
elle88 is offline   Reply With Quote
Old 04-22-2011, 09:54 AM
 
Go Back   Corvette Forum > C3 Corvettes, 1968 - 1982 > C3 Tech/Performance
Reload this Page qa1 single adjust discontinued. and now what to buy ? help
 
 
 
Reply

Tags
adjust, bilstein, c3, c6, corvette, discontinued, double, forum, qa1, qa1ts508jegs, rc1959p, shocks, single, sport, stiff, ts508


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -4. The time now is 04:40 AM.


Emails & Password Backup