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2nd Generation Specific 1986-1992 Discussion

Differences Of Fc And Fd Throttle Body

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Old 03-09-2004, 11:55 PM
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Any if at all?
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Old 03-10-2004, 12:01 AM
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its upside down, and the bolt patterns are different. i think the throttle plates are bigger too on the fd
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Old 03-10-2004, 12:13 AM
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I knew they were upside down. The butterflies look a little larger, not by much to me. I cant tell about the bolt pattern. Almost like its more square.



Thanks for the info man
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Old 03-10-2004, 01:10 AM
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The FD's are 50 X 50 & 45
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Old 03-10-2004, 01:25 AM
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what about the TPS output?
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Old 03-10-2004, 04:25 AM
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the 20b TB is where its at
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Old 03-10-2004, 08:06 AM
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Originally Posted by TheCamel' date='Mar 10 2004, 05:25 AM
the 20b TB is where its at
How big are the butterflies?
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Old 03-10-2004, 08:19 AM
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Originally Posted by Cheers!' date='Mar 9 2004, 11:25 PM
what about the TPS output?
It's not a gay plunger style TPS like the FCs.. Theres a resistor that bolts on to the main throttle shaft on the backside, and as the throttle opens, it turns the inside of the TPS..



And Mike it's not upside down compared to the N/A FCs..
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Old 03-10-2004, 08:45 AM
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FC is 45mm x 3.

FD is 45mm + 50mm x 2.

FD does not have any fittings for prior to throttle plates.





-Ted
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Old 03-10-2004, 10:30 AM
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Originally Posted by Cheers!' date='Mar 9 2004, 11:25 PM
what about the TPS output?
electrically they (s5, cosmo and fd) are the same. physically the cosmo and fd are not plunger style
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