Well I was scanning the neon boards and they have succesfully adapted the throttle body off of a 4.0L Jeep engine to their 420a. Its 60mm and with a p/p intake manifold said the result was beautiful. I dont know if this write up would work for us but this is what they did (got it from www.neonspeedlab.com):
Tools/Supplies Needed: Throttle Cable bracket (stock neon part) Aluminum Bracket on '97-'99 Neons that holds the TB to the head TB shaft from the stock Neon piece Spring from a Neon TB Neon TPS and IAC Jeep Cherokee TB
*PICTURE BELOW FOR REFERENCE OF PARTS (COMING SOON) *PRINTABLE VERSION OF THIS SECTION LOCATED AT THE BOTTOM OF THE PAGE
STEP 1: Altering the Jeep TB
1: You will have to remove the bullet on the end of the Cherokee IAC and install it on the end of the NEON IAC so that it will seal properly. The IAC on the Keep TB will also have to be turned 180 degrees so that it will not hit the intake manifold. Also I would use lock washers and some silicone on the gasket that goes between the IAC carrier and TB.
2: Use the NEON TPS
3: Remove the Cherokee TB shaft and butterfly. You will use the butterfly on with your setup. The rest you can do with as you please. You will need to cut the slit that the butterfly fits in so that it will accept the 60mm butterfly from the Cherokee t/b.
4: You will need to cut the end of the carrier-the plastic part so that the butterfly can be centered when installed in the Cherokee t/b. You will have to just eye it and cut a little at a time.
5: Once you are done with this you'll have to cut a few coils off the neon throttle return spring and use this spring on the Cherokee t/b to close the butterfly.
6: There are a couple of other things that will have to be cut on the neon carrier-they are pretty obvious.
7: You will have to come up with your own throttle stops. I used sheet metal for the one stopping the t/b when it closes. And I used a small allen screw on the other side so that it doesn't open too far when you to wide open throttle.
8: The mounting holes on the Jeep TB will have to be enlarged so that you can use the mounting position on the neon intake manifold. You also may have to open the manifold a bit with a Dremel.
9: The IAC opening on the manifold will have to be filled since you won't be using it anymore. Also you will have to make your own gasket, which can be done by purchasing a sheet of gasket material from your local parts store, and cutting it accordingly. You need to add about a foot of wire to each of the Neon IAC motor wires so they will reach the Cherokee TB's IAC location.
Toney '97 RS 5 Speed (totaled) 15.4606@88.42 Mph 96 Toyota Celica GT 88 Toyota Supra NA-T (w/ sports package) Got Boost?? Hell yeah I-6 turbo powah baby!
#10184, "RE: Jeep throttle bodies" In response to Reply # 0
I doubt it would work because the 420a in the eclipse and neon have completely different intake manifolds, so I doubt the jeep TB would mate to the eclipse intake manifold.. but I suppose if you took pictures and compared a neon and a 2gnt.. then perhaps they do mount the same.. but i really doubt it.
#10185, "RE: Jeep throttle bodies" In response to Reply # 1
yeah, i figured that might be a problem, but I thought maybe one of the experts we have on this board might be able to do something with it. Hell someone needs to find out for sure whether or not we can use them. One guy on the neon board bought and modified the throttle body for like 50 bucks, thats cheaper than gettin ours bored out to 55mm by Howell.
Toney '97 RS 5 Speed (totaled) 15.4606@88.42 Mph 96 Toyota Celica GT 88 Toyota Supra NA-T (w/ sports package) Got Boost?? Hell yeah I-6 turbo powah baby!
#10186, "RE: Jeep throttle bodies" In response to Reply # 2
nope, if it'll work on a neon, it wont work on a eclipse 420a... the throttle linkage is on the opposite side... dont think it could be adapted to work
#10187, "RE: Jeep throttle bodies" In response to Reply # 3
http://www.modernperformance.com sells a 60mm TB for a Neon and I spoke with them a while back about getting one adapted for an Eclipse. However, they were not interested...
#10192, "RE: Jeep throttle bodies" In response to Reply # 8
I posted this for a couple of reasons 1) people were always wondering whether or not the throttle body from the chrysler engines would fit our cars and this helped to answer that question and 2) if it were possible a 60mm tb with a p/p intake manifold would give greater results than a 55mm tb could ever give. So boring or not I found it to be a worthwhile post and now that I know its not possible I see a 55mm tb in my future.
Toney '97 RS 5 Speed (totaled) 15.4606@88.42 Mph 96 Toyota Celica GT 88 Toyota Supra NA-T (w/ sports package) Got Boost?? Hell yeah I-6 turbo powah baby!
#10194, "RE: Jeep throttle bodies" In response to Reply # 10
The 55mm is like 300 bucks, so Does anyone know what it would cost to get stock bored out to 55mm, and have oversized plate installed? Just want to compare to see if I took the wrong road. Also has anyone gotten any extrude-hone work done? What parts and what did it cost ya?
Perf: KYB AGX Struts Neuspeed Sport Springs 5 Strut Bars (2 F/U, F/L, R/U, R/L) Sprint Front Camber Kit $15 Rear Camber Kit Corbin's A/F Gauge MSD DIS-2 Ignition System Some Regrind Cams that need High Compression (which I don't have) Ported Intake Manifold Ported Throttle Body Nameless Cold Air Intake with a K&N Filter Custom 2 1/2 inch exhaust with Dual DTM Muffler Empty Catalytic Convertor Energy Suspension Motor Mount inserts Hurricane_GS Short Shifter Symborsky Shift Kit Clutchmasters Stage 3 Modular 225/50/16inch Wheels and Tires
Audio: Alpine CD Head Unit Alpine Flex4 25W X 4 for Fronts and Rears Alpine V-12 450W X 1 for Subs Infinity Reference Series 5 1/4 and 1 inch tweeter component systems for fronts and rears Blaupunkt 3 way 6x9's in the rears 3 MTX 5000 10" 12 ohm subs running 4 ohms mono
Flame Red SRT-4 GT40,8.5:1 Built Shortblock, Brian Crower Stage 2 Cams, etc etc etc...
#10196, "RE: Jeep throttle bodies" In response to Reply # 12
by the way.. if I remember correctly.. Howell doesn't actually do it.. they are just a distributor... they are built by AF/X http://www.afxmfg.com/ check out there site if you haven't already. they are the people that made almost all the stuff for my 420a SOHC.
Perf: KYB AGX Struts Neuspeed Sport Springs 5 Strut Bars (2 F/U, F/L, R/U, R/L) Sprint Front Camber Kit $15 Rear Camber Kit Corbin's A/F Gauge MSD DIS-2 Ignition System Some Regrind Cams that need High Compression (which I don't have) Ported Intake Manifold Ported Throttle Body Nameless Cold Air Intake with a K&N Filter Custom 2 1/2 inch exhaust with Dual DTM Muffler Empty Catalytic Convertor Energy Suspension Motor Mount inserts Hurricane_GS Short Shifter Symborsky Shift Kit Clutchmasters Stage 3 Modular 225/50/16inch Wheels and Tires
Audio: Alpine CD Head Unit Alpine Flex4 25W X 4 for Fronts and Rears Alpine V-12 450W X 1 for Subs Infinity Reference Series 5 1/4 and 1 inch tweeter component systems for fronts and rears Blaupunkt 3 way 6x9's in the rears 3 MTX 5000 10" 12 ohm subs running 4 ohms mono
Flame Red SRT-4 GT40,8.5:1 Built Shortblock, Brian Crower Stage 2 Cams, etc etc etc...
#10200, "RE: Jeep throttle bodies" In response to Reply # 16
that's funny.. but AF/X is the actually company that makes that stuff. and yeah.. i had a 420a SOHC in my 97 Breeze.. it pushed about 137hp stock.. not bad at all.
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