rear suspension height adjustment

[blucille]

I'm looking to lower my '72 a 1/2" to an inch in the rear, I know the radius arm needs to come off the torsion bar, but how involved is the process? Car does not have the later style adjustable radius arms.

been reading up on this, and doing a bunch of searches, but I'm hoping for a quick recap. I'm hoping by bushings are ok.

Lewis

[Tom F.]

Lewis,

Buy one of these: http://www.homedepot.com/Tools-Hardw...atalogId=10053

Drop me an email, and we can set up a phone call. I just did it on my car.

Tom

[John912]

Here's another option, non digital but works just as well and may be less expensive. Not sure what degrees are for lowering from stock height. Stock ride height is about 36 degrees, check specs. Make sure car is level on jackstands when measuring.


http://www.competitionengineering.co...?CatCode=10160


John

[Tom F.]

BTW, the later adjustable arms are great, but the factory did not use them to set the suspension when the cars were new. All of them came set at the lowest position. The idea was that the car could be raised back up, as the suspension sagged over the years. Or, maybe it was to give owners the option of going with the Safari look.

Whatever, the Carrera shop manual has an extensive discussion of corner balancing, which is worth checking out.

[Neil '67 911S]

Lewis,

Buy one of these: http://www.homedepot.com/Tools-Hardw...atalogId=10053

Drop me an email, and we can set up a phone call. I just did it on my car.

Tom

I just bought one of those at Sears last weekend. On sale for about $34. I used one of their non-digital (analog?) inclinometers for 20 plus years.

Measure your trailing arm angle relative to the door sill on that side. This way you don't have to worry about getting the car itself perfectly level.

[cmcfaul]

just measuring the hight at the end would give more accuate results....no?

Chris

[MarkS]

http://www.rennlight.com/cgi-bin/spring.cgi

[Dezzmo]

Hi Lewis,

I have an angle locater that I can let you borrow, I'll give it to you when we meet up in NY later this month.

I also just finished lowering my suspension recently so we'll chat more about then.

TimG.

[blucille]

thanks, Tim, I look forward to it.

I'm going to leave the rear alone for now, but I do have one of the gauges shown, very similar to the competition engineering one.

Lewis

[68911+1]

just measuring the height at the end would give more accurate results....no?

I think so after experimenting many times.

For what it is worth, my rule of thumb for a SWB car is, change the measured amount from the tip of the swing arm by 1/2 the amount you want to change the height of the car. (To lower the car 1 inch then raise the swing arm height one-half inch) Yep it works.

For a LWB car you need to reduce the amount a bit more for the longer swing arms.