Printable Version of Topic

Posted by: blabla914 Aug 30 2009, 02:20 PM

curious to know how much weight is saved with this change. Anybody know?

Thanks,

kelly

Posted by: john rogers Aug 31 2009, 06:21 PM

Probably does not save any weight but it will allow you to bolt in a 23mm master cylinder if you ever need to.

Posted by: SirAndy Aug 31 2009, 06:38 PM

Not much at all and in a position where it does not matter much. About as low in the car as you can get.

Plus, i have seen them flex while mounted in a 914. I got rid of mine and went back to the steel cross member.
Andy

Posted by: blabla914 Sep 1 2009, 11:21 AM

Hmm. That's an interesting fact I didn't know about with the master. Thanks John.

Andy, I agree even if it saved quite a lot of weight it's not really in an area where you need to save it. I'm curious about the flex issue. What were the signs it was flexing?

Thanks,

Kelly

Posted by: SirAndy Sep 1 2009, 01:24 PM

We were standing around the lift watching it twist while the steering wheel was turned ...
Andy

Posted by: slow914 Sep 13 2009, 01:48 AM

We put a steel cross member back on a early 911 this summer as the hole keeping the torsion bar adjustment screw in broke open while AXing with an aluminum cross member

He said he pulled in after the run and a track marshal came and handed his torsion bar to him He barely noticed it was gone with the 22mm tarret ha

Posted by: CliffBraun Sep 13 2009, 02:19 PM

You're probably saving about 10 pounds (disclaimer, number pulled straight out of ass). If you have a steel one sitting around you can weigh it and the aluminum one is gonna be about 1/3-1/2 the weight (if they were identical it'd be closer to 1/3, pretty sure they're not).

I've never had any problems with the aluminum one on my car, but fatigue for aluminum is different than that of steel, and it's important to be aware of that.

Andy, There had to have been something else wrong with that bar. I may have to put my car on the lift sometime this week and check that out.

Posted by: Joe Ricard Sep 13 2009, 06:46 PM

I'm thinking of filling my steel one with lead shot. If I have to add weight to the car to make it class legal The tube is where I want to put it.