IDA Webers? Has anyone

[Cracker]

running IDA's tried using the taller 5" stacks instead of the 2.5"? Hood clearance aside I was told they really like that extra lenght. What impact would this have on tuning, drivability or torque?

Also, is there anyone who would choose to install this set on their car AGAIN after "dealing" with them and why? Thanks for your thoughts! Does anyone have any pictures of the 5" stacks installed?

Cracker

[jamvan]

Cracker:

I run 48 IDA's on my 289. While all the tuning was done by the prior owners mechanic, which I must say he did a fantastic job with the tuning after a lot of trial and error, it was my understanding anything you do (changing the stacks, installing screens, etc.) will require re-tuning to get max performance.

I currently run the shorter stacks with srcreens and the performance couldn't be better. My only issue is that the idle needs to run a little higher than usual (1100 rpm's) and occasionally if the car is at full running temp and is then shut down upon restarting you get a little vapor lock which results in some backfiring until it's cleaned out.

While they may require a little more work to tune, I love the set-up. Nothing is sweeter than a 289 FIA with a set of Webers. But if you are looking for simplicity then get rid of them.

Best thing I can tell you is its not worth trying to tune them yourself unless you have lots of experience and the correct tools. It's an art in itself - better off spending the money getting it done professionally so you have more time to enjoy the car.

jim v.

[Jim Holden]

Cracker:

Chuck at Cobra Restorers has some experience in tuning webers.

You might try contacing him: http://www.cobrarestorers.com/

Jim