C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

TBI Colant By-Pass Question

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Old Feb 14, 2006 | 02:32 PM
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CAJUN C4
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From: MANDEVILLE, LA La
Default TBI Colant By-Pass Question

I noticed in the FAQ section it states that the hose size on the right side of the throttle body is 3/4" & exits with a 1/2" size. My 96' looks like they are both 1/2" in & out?
Maybe earlier model have the 3/4" inlet.?
Then down a little further another thread states 3/8" x 5/8" ?
Which is correct?

Last edited by CAJUN C4; Feb 14, 2006 at 02:55 PM.
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Old Feb 14, 2006 | 07:20 PM
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Originally Posted by CAJUN C4
I noticed in the FAQ section it states that the hose size on the right side of the throttle body is 3/4" & exits with a 1/2" size. My 96' looks like they are both 1/2" in & out?
Maybe earlier model have the 3/4" inlet.?
Then down a little further another thread states 3/8" x 5/8" ?
Which is correct?
On my l98 they are the same size

this is one of those "urban legend" modz that isn't worth your time, IMHO

It's a decing gimmick from the general, and there isn't enough surface area in the TBI for the heat to make much of a difference

That's my HO! I did it and found no gain

seeya
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Old Feb 14, 2006 | 07:37 PM
  #3  
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From: Sun City West Az
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With Jack. It isn't worth the trouble. Besides, he is as old as dirt, ugly as hell, been around since the good Lord was a corporal, has done about everything including leading the first wagon train out West......

Hey Jack...
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Old Feb 15, 2006 | 12:39 AM
  #4  
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From: San Jose Pat Tillman - American Hero
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I'll agree that it's not worth the trouble - except if you plan on taking off your TB frequently for dyno testing, cleaning, etc. - then it might be worth the hassle of not having to deal with those lines each time.

It's been a while since I did mine, but IIRC, I didn't use any new tubing or connectors at all. I just took the hose of the "in" side, disconnected both ends of the "out" tubing from it's connectors, swung the "in" tubing underneath the TB, and re-connected it to where the "out" tubing once was. Sounds crazy typed out, but take a look at your hoses (note the extra length), and you'll see what I mean.

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Old Feb 15, 2006 | 03:04 AM
  #5  
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From: Lahaina Hi
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If you do the throttle by pass ,it's one less water leak you have to worry about.
The horse power gain is unbelieveable.
Put some good gas in the thing and drive it.
If you want a race car get one on a trailor and go to the track.
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