SummitRacing throttle body thumbs up
07-29-2007, 08:15 PM
#1
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Join Date: Sep 2002
Posts: 3,458
SummitRacing throttle body thumbs up
I just finished putting in the Summit Racing TB, SUM-227701, 52mm, in the 93Z and have to say, " No problems.."
Only thing I had to do was to replace the 94-97 thottle cable plate for the 93, and I adjusted the idle screw to my original TB, before putting on..
It started up at 900~1000 RPMs and at warm was iding at 700~800.... Nice throttle response with no sticking...
So for around 250 dollars, I am a happy camper...
Installation 30~45 minutes, taking my time..
PS: Tools need for installation T15 torx and 6mm hex(allen) wrench..
Only thing I had to do was to replace the 94-97 thottle cable plate for the 93, and I adjusted the idle screw to my original TB, before putting on..
It started up at 900~1000 RPMs and at warm was iding at 700~800.... Nice throttle response with no sticking...
So for around 250 dollars, I am a happy camper...
Installation 30~45 minutes, taking my time..
PS: Tools need for installation T15 torx and 6mm hex(allen) wrench..
Last edited by n2ceptor; 07-30-2007 at 06:23 PM.
07-29-2007, 09:34 PM
#4
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Join Date: Apr 2000
Location: T E X A S
Posts: 2,665
Nice, I have a 93 Auto so I feel your pain on trying to find a TB that will work. I have a spare ported 93 Intake thats ported for a 58mm and want to have it powder coated and throw it on, but finding a TB for a 93 is such a pita and didnt feel like paying the money for a BBK or AS&M. Good to know!
07-29-2007, 09:44 PM
#5
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Join Date: Sep 2002
Posts: 3,458
Nice fit and smooth...... I didnt see any imperfections...... Only thing I was worried about was the idle.....
But like I stated above, no probs....... Maybe I got lucky on this one...
Its just the satin one, Care less about bling... Just performance...
Since the 93Z is speed density, might make a differance, since I had less problems than others with 94s and up.. No MAF??????????
Only thing I was worried about was the idle.....But like I stated above, no probs....... Maybe I got lucky on this one...
Its just the satin one, Care less about bling... Just performance...
Since the 93Z is speed density, might make a differance, since I had less problems than others with 94s and up.. No MAF??????????
07-30-2007, 07:24 PM
#12
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Join Date: Jul 2005
Location: Wisconsin
Posts: 297
I got a 58mm summit throttle body, and I am very pleased with it too looks really nice, no throttle sticking, no sucking sound, all machining looks very nice. My IAC were really high so I had to adjust the idle stock screw to crack the blades open, I ain't going to blame it on the trottle body could be because of the large cam
07-30-2007, 08:13 PM
#13
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Join Date: Sep 2002
Posts: 3,458
07-30-2007, 08:52 PM
#15
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Join Date: Oct 2006
Location: Rochester Hills, MI
Posts: 747
I got a 58mm summit throttle body, and I am very pleased with it too looks really nice, no throttle sticking, no sucking sound, all machining looks very nice. My IAC were really high so I had to adjust the idle stock screw to crack the blades open, I ain't going to blame it on the trottle body could be because of the large cam
For the IAC counts, I initially cracked the blades open, but idle was rough/uneven and the blades had to be opened quite a ways. Maybe 4-5 turns on the screw. I drilled the bypass hole (5/32) and was able to close the blades most of the way, with IAC around 80. Enlarged the hole to 3/16 and now blades are nearly closed, with IAC around 20-60 depending on conditions. At the same time, I installed a tube in the TB, in the engine side of the IAC passage, so it would mate to the IAC passage in the manifold. Together, these 2 mods significantly improved the idle quality and reduced smoke/stink at idle. Both are fairly common mods - you can find pics/instructions searching here. Simple and effective.