Question about Crawford Cats
#46
Well, Ian and I checked under the car while it was on the lift after the OEM cats were removed, nothing seem to stand out and grab my attention on the heat shields. I did't watch the mechanic every second though, bottle line.....I DON'T HEAR ANY RATTLE ON MY HF CATS!!!!!! Maybe the '03 coupe is built a little different than other models or the newer batch of Crawford Cats were already premodified to avoid this problem. Over all, very satified with the results-can't wait for the smell to go away.
#47
You still have a smell? Mine only smelled for 5-10min, is it normal for the cats to be taking so long to burn in? My Crawfords came already bent too.. Yes 03/04s and 350z's don't seem to have much of a problem, but I take GEE PASTA's word that the 05 is a little more difficult. How did they change your exhaust sound?
#48
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Originally Posted by Finiti35
You still have a smell? Mine only smelled for 5-10min, is it normal for the cats to be taking so long to burn in? My Crawfords came already bent too.. Yes 03/04s and 350z's don't seem to have much of a problem, but I take GEE PASTA's word that the 05 is a little more difficult. How did they change your exhaust sound?
The install was just flawless and the end results were well worth it. I think my arms just healed last week from the header install. Anybody installing a Crawford product will be rewarded with what I call a new driving experience. Now have a "Miller" and say thanks to Crawford products.
![Big Grin](https://g35driver.com/forums/images/smilies/biggrin.gif)
#49
I had mine installed today and damn it was a pita to get some of the bolts out of the cats, anyways I now know what you meant about the clearance issue, the passenger side was fine but the drivers side cat gets real close to the heat shield, but with it being dented in already there was a half inch gap which I made larger by hammering the heat shield more. Took it for a drive afterwards and no rattles at all
![Big Grin](https://g35driver.com/forums/images/smilies/biggrin.gif)
#50
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#55
Originally Posted by FLFIRE
Really stupid question:
Why are the Crawfords and the Helix manufactured with a know clearance problem?
We should not have to bend any aftermarket part in order to have it fit and not cause a rattle. It should be built with acceptable tolerances already from the manufacturer.
Why are the Crawfords and the Helix manufactured with a know clearance problem?
We should not have to bend any aftermarket part in order to have it fit and not cause a rattle. It should be built with acceptable tolerances already from the manufacturer.
![Confused](https://g35driver.com/forums/images/smilies/confused.gif)
![Confused](https://g35driver.com/forums/images/smilies/confused.gif)
#56
#57
Originally Posted by Luke enas
![Confused](https://g35driver.com/forums/images/smilies/confused.gif)
![Confused](https://g35driver.com/forums/images/smilies/confused.gif)
It was my understanding the you just can't "bang in" the Helix cats to make them fit. You had to actually bend in the underside of the foot well.
Last edited by FLFIRE; 07-23-2005 at 05:09 PM. Reason: typo
#58
I'm attempting to install my Crawford cats but running into some problems. The cats only came with bolts, no nuts. Am I to reuse the stock nuts? The nuts are stuck to 4 out of the 6 bolts. I couldn't find any lock nuts that fit at the local Lowe's hardware store. The Crawford bolts have a finer thread. Also, the O2 sensor is stuck. I tried using an adjustable wrench, but it started to strip the sensor. I think it might be 21mm, but my biggest box wrench is 19mm.
#59
Originally Posted by rock
I'm attempting to install my Crawford cats but running into some problems. The cats only came with bolts, no nuts. Am I to reuse the stock nuts? The nuts are stuck to 4 out of the 6 bolts. I couldn't find any lock nuts that fit at the local Lowe's hardware store. The Crawford bolts have a finer thread. Also, the O2 sensor is stuck. I tried using an adjustable wrench, but it started to strip the sensor. I think it might be 21mm, but my biggest box wrench is 19mm.
#60