could you do me a favor and take a picture of the inlet or outlet of the cat with a ruler held up to measure the diameter? could you also list what is the advertised diameter of the cat. thank you in advance. -demitri

 

Do you mean the inner diameter of the flange opening? If so, I believe it is 2.5" inner diameter. Contact Dave himself and I'm sure he will be more than happy to answer any questions.

 

i've always thought it was 2.5 outter, if it's really that then i have to get the 2.25 inner...does anyone have pics? measurements?

 

As I said, Dave has more experience with Carsound cats. than anyone I can think of, and will have no problem answering all of your questions. I'm quite certain that the flange is 2.5" ID, because he tapers his cat-backs' B-pipe flanges to eliminate the mismatch between the cat's 2.5" ID outlet and the 2.5" OD tubing used on the cat-back. Still, why not just ask him anything you still need answered?

EDIT: It didn't occur to me that you might not realize that Dave Stadulis is the owner of SMSP.


[Modified by Padawan, 12:37 AM 3/20/2003]

 

okay thanks i will contact him

 

The 2-1/2" universal cats are measured as the ID. This is so the muffler shops can just slide the tubing in each end and weld them up. For my 2-1/2 cats. I use a short piece of 2.50" OD x .071" wall 409 sst and flare it for the donut. So the ID of the inlet shouldbe around 2.36". On the outlet side, the 3 bolt flange slides over the tubing so the ID is 2.50" +. This is why I do a taper flare on my B pipes so they will be at least 2.50" ID at the inlet and there will be no mismatch.

 

Pix you requested:





to Dave.

Edit: If anyone is wondering, IT ISN'T RUSTED!



[Modified by SlayANT, 2:55 AM 3/25/2003]