1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

carb question (i did search)

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Old 04-08-04, 01:08 AM
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carb question (i did search)

i did search, and didnt find what i needed...exactly. my question is, does the weber 48 ida have that much of a substantial increase over the dcoe, is it worth it? i have a 84 gsl, stock now, but i plan to run a mild street port with a racing beat header, and a racing beat/weber(?) intake manifold. your help would be appreciated.



P.S. if there is a link, from a search that i missed, im sorry, just point me in the right direction.
Old 04-08-04, 07:18 AM
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http://www.inglese.com/tech.htm

Good luck.
Old 04-08-04, 08:11 AM
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Re: carb question (i did search)

Originally posted by perfect_circle
i did search, and didnt find what i needed...exactly. my question is, does the weber 48 ida have that much of a substantial increase over the dcoe, is it worth it? i have a 84 gsl, stock now, but i plan to run a mild street port with a racing beat header, and a racing beat/weber(?) intake manifold. your help would be appreciated.



P.S. if there is a link, from a search that i missed, im sorry, just point me in the right direction.

Yes there is a big difference between an IDA and DCOE. PM me if you need help setting it up.
Old 04-08-04, 01:10 PM
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i realize there is a diferrence, but is the difference worth the extra money for my application. also within a year or two, i want to go with forced induction.
Old 04-08-04, 01:34 PM
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it should be worth it from what ive heard....racing beat? do you mean the dellorto setup? it is said with racing beat exhaust and that carb setup it is a 53% increase in power. theres a guy on here selling one, PM Bbasso
Old 04-08-04, 01:42 PM
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The IDA is really "cold blooded" though. It doesn't have a choke, and is really hard to start even in warm weather from what I hear. I would personally go with a DCOE, only because I live in a colder climate. I don't know if the DCOE has a choke, but I hear it is much better at starting in cold weather and has better drivability in the city. It make more low end torque I think due to the longer intake.
Old 04-08-04, 01:47 PM
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yeah, and i live in michigan, so is cold. any one else want to put in there two cents. any one agree with 85rotarypower, because that would be more convieniant(sp?) seen as it is cheaper. thanks.

EDIT: also, if i should go with dcoe should i go with 45, or 48. because the rotaryshack website sayd that the 48dcoe is better for street ported engines.

Last edited by perfect_circle; 04-08-04 at 01:51 PM.
Old 04-08-04, 01:58 PM
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I would say go with the 48 DCOE, if your going to streetport your engine. If not, go with the 45. I hear good things about it. Actually, I hear more good things about a DCOE than the IDA's.
Old 04-08-04, 02:02 PM
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two more questions, on the rotary shack website, they have the dcoe as a side draft, can it be used as a down draft. which is beter for my setup, and can it handle boost?

thanks

P.S. or should i just get my nikki modded by sterling??

Last edited by perfect_circle; 04-08-04 at 02:04 PM.
Old 04-08-04, 02:04 PM
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the DCOE is strictly sidedraft due to the design of the float bowls. I have seen DCOE's, Mikuni's, and Dellorto's (all sidedraft) used under boost. They are fairly reliable too. I see more threads with problems with the Downdraft IDA's than the sidedraft carbs.
Old 04-08-04, 02:08 PM
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thank you, now i am pretty sure how i want to do this. any one got a used 48 dcoe for sale??
Old 04-09-04, 02:29 AM
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I think that the down draft carbs are really best for bridge and peripheral port motors. if you wann arun a street port then the side draft is the way to go
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