TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Question for the pro's (and not so pros)

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Old Apr 9, 2001 | 01:07 PM
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chevyboy07 91's Avatar
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From: down by the river
Question for the pro's (and not so pros)

when I put the NOS plate in, I decided to attempt the adj. FPR mod. Being that it was late and I felt like crap I just said F* it and put it back together. There is a circle rubber gasket under the whole "cup assembly". Actually the FPR sits right on it (I can't remember exactly anymore). When I was blowing everything out (after cleaning up a little) this old POS broke apart into 3 pieces and flew away. I put the assy together w/ out it b/c no fues or anything runs through there. I'm I ok like this or what????
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Old Apr 9, 2001 | 01:08 PM
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chevyboy07 91's Avatar
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From: down by the river
BTW, it seems like it was there as a damper or "shock absorber" of some sort.
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Old Apr 9, 2001 | 02:13 PM
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From: Ewing, NJ
that is just a little sock that they put on in case the tower is a touch out of tolerance. if the fpr has no signs of rubbing on it you can just ditch it.

lata
tim

------------------
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Old Apr 9, 2001 | 02:39 PM
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It is an air seal and not a cushion. You NEED it or dirty air will enter your engine through the gap between the bottom of the reg housing an the hole it is supposed to be clogging.

PUT IT BACK IN!!!
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Old Apr 9, 2001 | 02:39 PM
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snflupigus's Avatar
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its ditchable. as long as you arent getting to much dust past the airfilter thru that tiny gap. if there is a gap.
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Old Apr 9, 2001 | 08:51 PM
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NJ SPEEDER's Avatar
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From: Ewing, NJ
there is less than 1mm of clearance there. i think it is safe to say that nothing harmful can get in and weave its way down to the motor.

lata
tim

------------------
91 Camaro RS-LO3,Auto.
14.209@95.46mph
Best 60' 1.917
Check Out The East Coast F-Body Nationals Home Page
www.geocities.com/njspeeder

My MAFB.ORG Home Page
www.mycar.net/mafb/registry/detail.cfm?id=299

DSI Racing Home Page
www.geocities.com/foff667
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Old Apr 10, 2001 | 08:18 AM
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If it's ok to have 1mm pieces of dirt going through your motor, leave it off.

NOT! What is the matter with you guys? IT HAS TO BE THERE!!! Next time you drive down the road and notice it's dusty out, just think of your pistons/rings/valve seats/etc. WOW. There is a delta pressure at the hole, too, which WILL SUCK STUFF IN!!!

I guess if you want to continually re-hone your cylinders, you may have something there!!! heee heeee


[This message has been edited by FastBroker (edited April 10, 2001).]
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Old Apr 10, 2001 | 02:32 PM
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actually, some injector pods dont have a hole there. hmmm, just put some tape or something around it. try an oring. so fastbroker wont have a stroke.
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Old Apr 10, 2001 | 02:48 PM
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Uuuuugh...

No, just remove the air cleaner, start 'er up, rev it to 2000rpm or so to crack the throttle blades a little, then, using your hand, drop some sand down into the the TBI bores.

Let me know what happens. As Karl Spackler would say, "It's no big deal?".
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Old Apr 10, 2001 | 09:25 PM
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From: clinton,tn
Give FastBroker a break. He's just trying to save all of us some grief. It's no fun having to do work on an engine thats not performance or maintenance related. As easy as it is to put something in there or cover the hole up it sure would be a waste to have a thing like that cause problems. Has anybody looked at the top of their manifold lately? If your not into detailing you engine compartment every week you will see a lot of things like sand and dirt that is only a few inches away from this little 1mm vacuum cleaner. Just my two cents.

Steve
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Old Apr 10, 2001 | 11:03 PM
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snflupigus's Avatar
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Car: 92 RS, 02 Tacoma, 2 73 Porsche 914s
ya ya ya, i know, i was just kidding with him. ideally you would cover it. I guess im bias, since im TRYING to kill my l03.
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Old Apr 11, 2001 | 09:34 AM
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I had a nasty backfire blow-out a sheety paper aircleaner in an off-road race once. Needles to say, although I finished, the motor WAS finished... Now I use paper/Aluminum screened versions.
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Old Apr 15, 2001 | 10:27 PM
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From: clinton,tn
Just thought I would throw this in. For everybody that has made their fpr adjustable there is the same problem and maybe worse. When you drill out the bottom of the fpr to get at the screw to make it adjustable you also open the tbi to the outside thru the fpr. Might be a good idea to put some silicone in there to seal it up. Just enough to seal it not to much. This wouldn't affect being able to adjust it in any way.

Steve
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