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Bernd
GenIII
 
4/10/2001
14:17:48
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 Subject: Catalytic Convertors - Did my homework
IP: Logged
Message:
Well, I called Random Tech, Catco, and Car-Sound and here's the low-down:
First off, all the Catalytic Convertors use the same actual brick material but
it's up to the manufacturer on how much of the precious metal (catalyst) to use
and how big of a brick (for flow).
** Random Tech
Uses a smooth case and a shorter "brick" for increased flow...HP gains
negligable with shorter brick. Possibility of brick "rattling" with extended
hot/cold expansion and contraction of the casing itself since there is no
ribbing but they do use a thicker matting to hold the brick in place. Inlet
and outlet tubes not lap jointed (as per tech on the phone) but are flared
instead and are 100% stainless steel (case included). They also stated that
Catco is NOT the same thing and are NOT related at all. The interesting thing
is that they actually recommended using Car-Sound instead of theirs for the
more budget oriented (not on quality...just on price).
** Catco
No website available...but are definitely NOT the same as Random Tech...as
stated to me by the tech on the Catco support line. Standard inlet and outlets
welded (not lap jointed to prevent turbulence) and only have a slight rib to
hold the brick and matting. They also do NOT have a OBD-II compliant OEM
replacement for the R/T or Regular Dakota's...just universal convertors for the
budjet minded.
Catco Catalytic Converters
4410 W 37th Ave
Hobart, IN 46342
Contact: 219-947-1664
** Car-Sound
They use a slightly smaller brick and thicker matting (almost like the Random
Tech) but the main difference is the case. It uses a ribbed casing around the
ceramic (brick) and matting to keep it from rattling (due to constant expanding
and contracting of the case itself). They use stainless steel inlet and outlet
tubes which are lap jointed on the outlet to prevent turbulence in the cat. A
polished Stainless Steel casing available for Show Cars as well.
The choice is now yours...That's the facts.
Bernd D. Ratsch
1997 Dodge Dakota SLT
Supercharged w/Nitrous
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Bob
DakotaEnthusiast
4/10/2001
20:11:22
| RE: Catalytic Convertors - Did my homework
IP: Logged
Message:
Dam Bernd!You should get a star on that home work.Your the man!
Zoom zoom
PS-I thought a brick was some serious drugs!
00 Dak.CC SLT Plus 4.7L 235hp 355 L-Slip Auto.
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Bernd
GenIII
4/10/2001
23:23:58
| RE: Catalytic Convertors - Did my homework
IP: Logged
Message:
Depends on what kind of a "brick" you're referring to Bob. ;)
Bernd D. Ratsch
1997 Dodge Dakota SLT
Supercharged w/Nitrous
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Jonas Janek
Unregistered
4/11/2001
01:21:19
| RE: Catalytic Convertors - Did my homework
IP: Logged
Message:
Very interesting, here is a question, as far as horsepower, torque, etc would running a double cat be better, or would one of these be better than the stock cat. I really dont know much about these on the performance end will someone fill me in?
Jonas
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Bernd
GenIII
4/11/2001
10:20:40
| RE: Catalytic Convertors - Did my homework
IP: Logged
Message:
If your vehicle came equipped with two cats, that's what you are required to run (emissions laws...not performance wise). If it came with a single...then you run a single.
The only part that you really need to worry about are the local emissions laws...plus...a shop can't "legally" remove the cat unless it's beyond the 50-80K mile mark. If you have less than 50K on the cat, your dealer has to replace it under warranty...unless you have non-approved headers on the engine (in other words...not Mopar headers).
Bernd D. Ratsch
1997 Dodge Dakota SLT
Supercharged w/Nitrous
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jase
Dodge Dakota
JOIN HERE
4/16/2003
19:24:56
| RE: Catalytic Convertors - Did my homework
IP: Logged
Message:
I have a question....i am looking for a catco catalytic converter for my dakota...it has the 3.9 in it and i am trying to fix the truck up...where can i pick one up at or the cheapest site to get one off of...ne other tips on how to get more power out of my truck would be appreciated...
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Evil Doer
Dodge Dakota
JOIN HERE
4/17/2003
06:54:04
| RE: Catalytic Convertors - Did my homework
IP: Logged
Message:
As for running two cats, I remember reading somewhere that if you didn't use cats designed to a two cat application that they wouldn't get hot enough and would be ineffective.
Something to consider if you're concerned about emmissions.
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