2nd Generation Specific 1986-1992 Discussion

Differences Of Fc And Fd Throttle Body

Old Mar 9, 2004 | 11:55 PM
  #1  
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Any if at all?
Old Mar 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
Old Mar 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
Old Mar 10, 2004 | 01:10 AM
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The FD's are 50 X 50 & 45
Old Mar 10, 2004 | 01:25 AM
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what about the TPS output?
Old Mar 10, 2004 | 04:25 AM
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the 20b TB is where its at
Old Mar 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?
Old Mar 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..
Old Mar 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
Old Mar 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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