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Hi fellas, I'm finding it impossible to find 100cpsi 2" metal cats... I can only seem to find them in 200cpsi. 2.25" seems to be the smallest 100cpsi available. Is there any reason for this do you think?
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'99 Mazda 121 Demio - 5 speed, B5
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What?1986 Comp Prep SVO Mustang(1 of 83) Four cylinder turbo! (Think first Fox body "R" model!)
1995 F-150 Extra Cab and it was free!
1991 Festiva L, Surf Blue with A/C
1995 Jeep Cherokee 2wd 5 speed 4.0 and it was free!
1993 Aqua Festiva and it was cheap!
1994 Brake Swap and it was cheap!
1969 Ford F100 Big Block Ranger and it was free! (coming 2/12) -
Why can your parts store get you a cat? You can just buy the 2.25 inch one and put some reducers on both ends.91 Festiva BP Autocross/Track/Rallycross hopeful
14 C7 Z51
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Yes, well looks like that's the only solution if you want 100 cell... been lookin everywhere!'99 Mazda 121 Demio - 5 speed, B5Comment
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why bother??Originally posted by Grey Vw View PostB6 with lightweight Flywheel, FMS street cam
Holy heck gee willickers its fast!!droolComment
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Because it's apparently the only solution.Originally posted by blitzbuggy View Post91 Festiva BP Autocross/Track/Rallycross hopeful
14 C7 Z51
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Why install a cat? Emissions tests?1990 White L-Plus 5-speed rust-machine
Scrapped
1991 Blue L 5-speed
daily driver, intermittent project
1993 rustless wonder
A shell, awaiting suspension, brakes, and B6TComment
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Illegal not to have one in Australia. So the less restrictive cat, the better...'99 Mazda 121 Demio - 5 speed, B5Comment
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How would a 100csi be any more restrictive than 200csi?
The 200 will have smaller holes, but twice the holes in the same area should mean that there is more surface area to the holes.
The surface area of the holes in a cat is generally larger than the cross section of the pipe they're fitted to, to reduce pressure differential across the catalyst.Comment
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You right it's not... which is why I was wanting to find a 100 cell 2" cat
'99 Mazda 121 Demio - 5 speed, B5Comment
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Oh, you want the restriction. How different... In that case, carry on.Comment
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No no, 100 cell is less restrictive, much larger holes! Sorry if I misled
'99 Mazda 121 Demio - 5 speed, B5Comment
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