How to Custom Centerlink

[jonfarrugia]

I've come to the conclusion that my steering /motor setup will require designing a custom centerlink. I'd like to get some suggestions on how to build it as well as what rod ends to use. All the stock components connect to the center link with a tapperd tie rod. I would assume both the pitman arm and the idler arm will need to be drilled out using a 5/8" striaght drill bit. Between the idler arm/pitman arm and the centerlink there will need to be some kind of spereical joint. The tie rods would connect to the centerlink using rod ends. I'm sure there are many ways to do this but I'd like to get some suggestions on the joints before I start designing one up.

[chicane]

First... welcome.

Second... give us an introduction of whom you are and what it is that you do and what it is that you are working on.

And third... it would help somewhat to explain which suspension you are choosing to modify. Just to save from re-inventing the wheel... there may be some current solutions and/or options available that may negate the time and effort involved in the complexity, of what you are trying to accomplish.

FWIW... there are a couple of companies that have already addressed the drag link issue and may have the singular components that you are looking for. The companies off the top of my head are CV Racing, BSR and Left Hander Chassis.

BTW... it's nice to have another... that likes to jump into the construction of said kinematics head-on... kudos.

[jonfarrugia]

Sorry for the lack of an introduction!

I have been rebuilding a 67 Pontiac Beaumont (Very similar to a Chevelle but the Beaumont is Canadian made by Pontiac using a GM drivetrain.) I started restoring my car to near factory condition....however, after a very cooled winter and a cracked engine block my 67 Beaumont went from factory to full custom. This is my first build so please take it easy on me!!
Once I figured out the block was cracked I began looking for a power train to build my project around. My love was a GM 572 but I just couldn't afford an engine like that. I wanted an engine that I could easily add to if the need ever arose for more power. Well my search ended when I located a complete power train from a Dodge viper. That's right...a V10 viper. As if this idea wasn't far fetched enough. I built a Twin Turbo V10 witch should provide about 1000 RWHP! I've been working on the project for the past few years and have decided to expand my network of forums to help answer some burning questions.
Take a look at my photos and let me know what you think. I have also been posting my progress on the Chevelle forum.

Photos: http://s200.photobucket.com/albums/aa205/buttslapper69/

Chevelle Forum Progress: http://www.chevelles.com/forums/showthread.php?t=181312

The current issue I am trying to resolve deals with designing a center link/ drag link with a 3" drop center to clear my oil pan. If you have any pointers to help me design one like material to use. For example which rod ends, size of rod ends, load capacity. Functionality that should be incorporated like bump steer adjustments. Any help would be appreciated!

[chicane]

There are pre engineered and constructed centerlinks that allow you, the end user, the available adjustments that you are looking for...

For example:




The lefthand world has configurable centerlinks... to include the pitman and idler... for just this purpose. This would meet the specific criteria for the loads involved of said unit... and it is far better and easier I might add... to utilize something like this vice that of re-inventing the wheel.

A tube construction centerlink with rod ends needs to be made of the correct material, the correct heat treatment and would need to be specific to the chassis. There are a few variables in that equation... that can not be overlooked. I would think it to be easier to utilize a product that is already proven and in use with the suspension that you are currently using. Afterall... the front steer suspensions have been used in the lefthand world from quite some time. Basically, the parts are already there.

The picture above is an example of a ROUSH unit... which is a front steer very similar to your current suspension.


**EDIT**: It's either that or you are in serious need of an aftermarket oil pan... which would be even easier and much cheaper.

[jonfarrugia]

Do you have a link to these centerlinks?

[ccracin]

Chicane is absolutely correct. Check with any circle track supply house. The dirt and asphalt modifieds that use stock front clips have been using the 68-72 Chevelle clip for years. There are many parts that have been designed around your exact geometry. Some places to google are: Coleman Racing, Lefthander, Howe, Allstar Performance, UB Machine, CV Racing Products, Stock Car Products, Speedway Motors........... Start there. Good luck and nice project.

[jonfarrugia]

I've searched high and low. I've gone to all the sites you guys have suggested but I am unable to locate an adjustable centerlink for a 67 chevelle. I've found 68 and newer but nothing for a 67. Any other suggestions?

[pro-tour79]

most of the circle track parts are modified versions of the stock item, your best bet is to take measurments of the mounting and pivot points and find one that maches the after market center links are adjustable in one form or another

[jonfarrugia]

That is what i've been trying to do but all the centerlinks i've found are dimensionally different. For example the distance between tie rod mounting locations may be different by 3/4" or the orverall length as much as 1". Those dimensions aren't adjustable unless the center link is cut and welded. Do the dimensions need to be exact? or will I even notice a difference if there is a 3/4" difference?

[E.rodz]

wow body work looks awsome so far. are you stuck on running the stearing box? why not run a rack and save some room for your turbos and your exsaust. just a sugestion. its kind of going to be an attension whore isn't it. keep it different.