86svo9l
06-01-2012, 07:14 PM
Not sure if this is the right area, but here is a nice write up I did a while back for a budget throttle body upgrade. This helped my drive ability quite a bit after the intake,and cam upgrade. At the same time I upgraded to the SN95 style sensors and the car surprisingly ran quite a bit better. All idle surge and the mystery miss was gone after this swap which made me a happy panda. Disclaimer - I had a spare intake hanging out for this setup, all my SVO stuff is unmolested sitting in boxes in the attic.
The first thing I did was go to the local pick yard.
Parts list is as follows:
60mm throttle body from SN95 or supercoupe(with sensors if possible) note - if using the TPS from SN95 you need to delete the EGR, if not using TPS from SN95 disregard those items.
Proper pigtail for the sn95 tps.
TPS off an older 2.3(for its wiring).
Throttle cable bracket off 2.3 car.
If your using the SN95 tbody you might want to grab a junk 2.3 tbody to steal linkage off of.
Transition hose for intercooler to tbody should be 2 1/2 inches long with 2 1/2 inch inner diamater to 3 3/16 inner diameter(Have to source this elsewhere.)
I soldered and shrink wrapped the wiring for the TPS and rewrapped it for the factory look.
After that was done I went ahead and made a diagram of the bolt hole locations from the stock Tbody. Then drilled them out on the sn95 throttle body and filled the gaps on the back with epoxy since one of the holes ends up into the gap, I was paranoid about possible vacuum leaks. I also took this time to cut the opening in the upper to match the intake with a die grinder and trimmed my gaskets.
Next modify the spare bracket, I cut it and attached it to the stock bracket staggered one bolt back, this will give the linkage the proper distance.
I went ahead and smoothed out the top of the throttle body to look like the 2.3 throttle body by removing the tower, I went a little overboard and mildly polished it though. If using a SN95 tbody go ahead and adapt the linkage.
I had already gutted and ported my intake, while there I cut off the EGR flange and welded it all up which is necessary for the SN95 TPS clearance.
After said and done it bolted up and everything plugged in as if it came from the factory that way. I did all this for around $45 with parts from a local salvage yard, the most expensive piece being the transition hose that I had to pick up from the store.
http://i741.photobucket.com/albums/xx53/86svo9l/SVO/throttlecloseup.jpg
The first thing I did was go to the local pick yard.
Parts list is as follows:
60mm throttle body from SN95 or supercoupe(with sensors if possible) note - if using the TPS from SN95 you need to delete the EGR, if not using TPS from SN95 disregard those items.
Proper pigtail for the sn95 tps.
TPS off an older 2.3(for its wiring).
Throttle cable bracket off 2.3 car.
If your using the SN95 tbody you might want to grab a junk 2.3 tbody to steal linkage off of.
Transition hose for intercooler to tbody should be 2 1/2 inches long with 2 1/2 inch inner diamater to 3 3/16 inner diameter(Have to source this elsewhere.)
I soldered and shrink wrapped the wiring for the TPS and rewrapped it for the factory look.
After that was done I went ahead and made a diagram of the bolt hole locations from the stock Tbody. Then drilled them out on the sn95 throttle body and filled the gaps on the back with epoxy since one of the holes ends up into the gap, I was paranoid about possible vacuum leaks. I also took this time to cut the opening in the upper to match the intake with a die grinder and trimmed my gaskets.
Next modify the spare bracket, I cut it and attached it to the stock bracket staggered one bolt back, this will give the linkage the proper distance.
I went ahead and smoothed out the top of the throttle body to look like the 2.3 throttle body by removing the tower, I went a little overboard and mildly polished it though. If using a SN95 tbody go ahead and adapt the linkage.
I had already gutted and ported my intake, while there I cut off the EGR flange and welded it all up which is necessary for the SN95 TPS clearance.
After said and done it bolted up and everything plugged in as if it came from the factory that way. I did all this for around $45 with parts from a local salvage yard, the most expensive piece being the transition hose that I had to pick up from the store.
http://i741.photobucket.com/albums/xx53/86svo9l/SVO/throttlecloseup.jpg