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65mm TB: which by-pass air valve?
#1

I've found a couple '94-95' Cobra TB's for sale (never seen one before, not installed on a 2.3T). One has no IAC-by-pass air valve/solenoid attached, and the other has the squatty, later black version which looks nothing like the 2.3T type. Does the 2.3T type IAC-BP valve just bolt onto the mustang TB? Do I need to buy a different one for the TB, or can the later, Mustang unit be re-wired for the 2.3T harness and computer??? THANKS!
John

3 XR4Ti's (1 street/road course w/ Cossie stuff); WRX; Lightning; F250 PS X; Focus ZX3
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#2

Check out MM&FF June 03 in Xtreme Group files. Tiny Avenger in HB has adapter to mount 65mm 94-95 5.0 TB. :lol:
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#3

You should buy the throttle body that looks exactly like the stock 2.3 TB. This larger throttle body can be found on '91-93 5.0 thunderbirds and cougars as well. I use the stock 2.3 IAC on the larger throttle body and i don't have any problems with idle. Just make sure that you use a gasket.
Restoring '84 Mustang GT Turbo 2E, SPDIS, air dam, lowered, basic bolt ons, super 60, PK1, 35#ers, RR +4*
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#4

You can use the stock one if you make a plate to mount the inlet and outlet lines. You can mount it anywhere in the engine compartment but try and minimize the amount of tubing used.
It doesn't have to be mounted on the T/B.

Mike SVOR
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#5

94-95 Cobra = 60mm TBs
Any sufficiently advanced technology is indistinguishable from magic. - Arthur C. Clarke
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#6

Do you mean the Idle Air Motor/Bypass?

If so, I've run both the 2.3 style Idle Air and the later style Idle Air from the 94-95 throttle body on the 94-95 throttlebody installed on my car. I noticed no difference between running either style Idle Air. There was no adaptor needed to bolt the older style Idle Air piece on to the 94-95 style throttle body. The only adaptors you need is an adaptor to mount the throttlebody to the upper intake and an adaptor if you want to use the older style throttle position sensor (or you can get a wiring adaptor from Tiny Avenger to plug the newer style one into the stock wire harness).
Lon
1985.5 SVO
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#7

Thanks, guys. I don't intend to use Dave's adaptor plate, but I will probably call him for the connector adaptors, unless you guys have found it easy to splice into the later TB TPS and IAC. BTW, the second one I'm looking at is actually a 65mm TB, but with the same general configuration as the 2.3T, and the 60mm 5.0's.

Also, Mike thanks for the tip on remote mounting. But, I still have to keep this at least looking smog legal for CA, and I'm guessing most techs would spot that and ask a few more questions...
John

3 XR4Ti's (1 street/road course w/ Cossie stuff); WRX; Lightning; F250 PS X; Focus ZX3
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#8

Quote:Originally posted by frmrpro:
but I will probably call him for the connector adaptors, unless you guys have found it easy to splice into the later TB TPS and IAC.
There used to be a FMS part (in the "rod" section) that adapted the later style TPS plus to the earlier harness..part # M-9989-A1

Or you could just splice the wires
"Nobody can be so amusingly arrogant as a young man who has just discovered an old idea and thinks it is his own."
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#9

Quote:Originally posted by frmrpro:
...the second one I'm looking at is actually a 65mm TB, but with the same general configuration as the 2.3T, and the 60mm 5.0's.
So for sake of argument, what is the size of the stock throttle bodys of the 2.3L? I have been toying with the idea of going bigger, but I have not found a good donar to pull from. Will the 60mm bolt to our upper intake without an adaptor platewith some lite modification? How can you tell if it is a 60mm, 65mm, or smaller/larger? Is there a number on it somewhere? Thanks.

Jim B.
Gunmetal Gray 88 TC; an ongoing experiment!!!!
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#10

The 65mm one has it actually embossed onto the TB... must be a FMS part.
John

3 XR4Ti's (1 street/road course w/ Cossie stuff); WRX; Lightning; F250 PS X; Focus ZX3
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