Throttle body ?

[s14sleepyeyez]

Not sure if anyone has discussed this but will the Q45 throttle body fit on the KA24de and is it a good upgrade?If not then what would be a good throttle body upgrade?

[3dKa24]

Youll feel a difference but its way to big (90mm as opposed to 58-60mm stock KA) not worth it unless your going big, Raised redline, high lift long duration cams, raised compression, upgrade fuel components, Race headers full 3" exhaust Then it will supplement well or Turbo. Otherwise its just overkill.JUst port it to 62-65mm that should suit an average to mildly modded KA,Check out http://www.Maxbore.com.

[s14sleepyeyez]

Thanks for the info, wasn't really sure if it was too big for th KA. Knowing it was 3 inches +.But I like what I see with what maxbore has to offer. But if I wanted to just say choose a different throttle body to upgrade too what would be recommened?

[3dKa24]

Well I read a post Where BigVinnie said We can use a 90-93 Mustang Gt Throttle Body, Last week when I read it Istarted bidding ON like 3 of them but they went for like 50-60 bucks, I was looking to spend 30 or so, but now im broke til next week. Maybe he can chime in and verify.

[BadMojo]

Well I read a post Where BigVinnie said We can use a 90-93 Mustang Gt Throttle Body, Last week when I read it Istarted bidding ON like 3 of them but they went for like 50-60 bucks, I was looking to spend 30 or so, but now im broke til next week. Maybe he can chime in and verify.

Maybe it's late and my brain isn't working (again), but isn't the TB from the 5.0L Mustang GT 60mm, the same as the KA TB? Perhaps it will physically work without modification, but what's the point if it's the same size? I'd imagine you can get a KA throttle body really cheap from someone here who's parting out their car.

[s14sleepyeyez]

Yeah I really wouldn't see why someone would want to modify to a TB the same size as a KA?.. but if there is any other TB's that would work on the KA that would be a good performance upgrade?

[3dKa24]

NOpe wrong, the 5.0 TB's are 65mm what would be the purpose of swapping for the same size , why would I even post that info if it were the same size.ex. http://cgi.ebay.com/ebaymotors...56768Search around im so Right.

[s14sleepyeyez]

so i am guessing this would be a better upgrade then. thanks for the info 3dKa24.

[Bigvinnie]

Maybe it's late and my brain isn't working (again), but isn't the TB from the 5.0L Mustang GT 60mm, the same as the KA TB?

Correct the stock Ford mustang TB comes in 60mm diameter (mid86-93 ford mustang V8 MPI), early 86's were still carburated.After market Ford Mustang TB's (mid86-93) by (BBK, Professional Products, and ACCUFAB) all come in 60,65,and 70mm diameters with the same bolt pattern and work with slight modifying of the TPS and a manifold port for the larger butterfly.You can always go to http://www.maxbore.com and get the stock TB bored to 64mm with new butterfly for $100 plus shipping and the manifold ported for $110, I believe.....
Modified by Bigvinnie at 5:28 PM 7/8/2006

[BadMojo]

You can always go to http://www.maxbore.come and get the stock TB bored to 64mm with new butterfly for $100 plus shipping and the manifold ported for $110, I believe.....

Yeah, I was checking that site out. The guy seems to do good work. Do you think 64mm is the biggest you'd want to go boring the KA TB?

[Bigvinnie]

Yeah, I was checking that site out. The guy seems to do good work. Do you think 64mm is the biggest you'd want to go boring the KA TB?

I would say that it depends on your intake cam placement. Retarding the intake cam will significantly raise the power band and high end power. It would be good to increase the diameter to lets say 64~66mm to make a high end engine (although it detunes streetability, to make it more of high rever 1/4mile car). Enlarging the TB too much decreases swirl at lower RPM so an ecu tune would defenitely need to be used to lean out at low throttle/RPM, and have it adjusted to load and ignition timing to make proper power.If you are looking to stay within a moderate range (streetable range with stock cam placement or upto a 5 degree retarded intake cam) 60~63mm would do some justice on increasing alot of midrange power upto 4500~6000RPM.I myself have a 62mm TB it isn't in place yet as I am doing some adjustments to the manifold. But I have ran it before on other KA set up's and it works excellent at 62mm actually increasing leaness to the stock ecu fuel map which already runs a little on the rich side.

[3dKa24]

Yeah I was mistaken on the size thing. Sorry for thatAlthough you can buy a 91-93 explorer V8 engine T.B which definately is 65mm and Mustang guys use it as a Swap with some modification. So if we are able to bolt up Mustang T.B's this swap should work.BTW heres the guide to make the Explorer T.B fit on A mustang.http://www.veryuseful.com/must...B.pdfIn case someone wants give it a shot.

[Bigvinnie]

Yeah I was mistaken on the size thing. Sorry for thatAlthough you can buy a 91-93 explorer V8 engine T.B which definately is 65mm and Mustang guys use it as a Swap with some modification. So if we are able to bolt up Mustang T.B's this swap should work.BTW heres the guide to make the Explorer T.B fit on A mustang.http://www.veryuseful.com/must...B.pdfIn case someone wants give it a shot.

Good info. I do need to make a note and point about this. These aftermarket and ford TB's only work for OBD1 KA's. The TPS on OBD 2's is literally double the size.Sorry OBD2 guys, older OBD1 tech is better and easier to work on anyways. I still don't know how to tune double chip sets, and emulators are retarded IMO.