Throttle body bypass
Thread Starter
Drifting
Joined: Oct 2001
Posts: 1,444
Likes: 4
From: Hawthorne NJ
Throttle body bypass
If I don't hook the water lines to the throttle body on an '89 TPI engine, why do I have to connect them to each other? Can I plug them?
Can I cut them off? I'm using this engine in a hotrod, stock with ECU and all proper wiring. I would like to clean up the appearence of the engine as much as possible.
Thanks
Can I cut them off? I'm using this engine in a hotrod, stock with ECU and all proper wiring. I would like to clean up the appearence of the engine as much as possible.
Thanks
Intermediate
Joined: May 2007
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Melting Slicks
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
Anyway, this is how it works on a '93 :
Last edited by MikeC4; May 26, 2007 at 05:25 PM.
Melting Slicks
Joined: Apr 2002
Posts: 2,118
Likes: 0
From: St. Charles, MO Route 66 Corvette Club
NCPunk: If I read your posting, you are wanting to remove the hose that connects the heater and throttle body to the cooling system. You can remove this "loop" without any problems assuming you modify the throttle body inlet and outlet point of the coolant system.
Here is a photo of how to bypass the throttle body (clean up) on a 89 Vette engine:
Do it
Here is a photo of how to bypass the throttle body (clean up) on a 89 Vette engine:
Do it
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Race Director
Joined: Jun 2004
Posts: 13,963
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From: WI
You can plug them if you wish but then your heater core isn't going to make a whole lot of heat. As there will be no coolant going through it.
I made a new line instead of adapting the hoses together. It looks much neater tucked away then crawling across your V/C. I also buzzed off the fittings on the TB so they didn't stick out looking fugly.
I made a new line instead of adapting the hoses together. It looks much neater tucked away then crawling across your V/C. I also buzzed off the fittings on the TB so they didn't stick out looking fugly.
Melting Slicks
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
Thread Starter
Drifting
Joined: Oct 2001
Posts: 1,444
Likes: 4
From: Hawthorne NJ
If I don't hook the water lines to the throttle body on an '89 TPI engine, why do I have to connect them to each other? Can I plug them?
Can I cut them off? I'm using this engine in a hotrod, stock with ECU and all proper wiring. I would like to clean up the appearence of the engine as much as possible.
Thanks
Can I cut them off? I'm using this engine in a hotrod, stock with ECU and all proper wiring. I would like to clean up the appearence of the engine as much as possible.
Thanks
Perhaps I didn't state my situation clearly....I put an '89 Corvette 350 TPI into a '39 Buick. I rerouted the heater hoses directly from the engine to the heater as they would be in a '60's car. What I need to know is whether it matters if the throttle body outlets which are no longer being used, need to be capped and if not could I even cut them down for appearence and clearences?
Sorry for the confusion, thanks for all your interesting responses.
Instructor
Joined: Apr 2007
Posts: 136
Likes: 0
From: Fountain CO
Perhaps I didn't state my situation clearly....I put an '89 Corvette 350 TPI into a '39 Buick. I rerouted the heater hoses directly from the engine to the heater as they would be in a '60's car. What I need to know is whether it matters if the throttle body outlets which are no longer being used, need to be capped and if not could I even cut them down for appearence and clearences?
Sorry for the confusion, thanks for all your interesting responses.
Sorry for the confusion, thanks for all your interesting responses.
You can cut them flush.
Racer
Joined: Sep 2005
Posts: 484
Likes: 0
From: Redwood City CA
You can plug them if you wish but then your heater core isn't going to make a whole lot of heat. As there will be no coolant going through it.
I made a new line instead of adapting the hoses together. It looks much neater tucked away then crawling across your V/C. I also buzzed off the fittings on the TB so they didn't stick out looking fugly.
I made a new line instead of adapting the hoses together. It looks much neater tucked away then crawling across your V/C. I also buzzed off the fittings on the TB so they didn't stick out looking fugly.
Intermediate
Joined: May 2007
Posts: 47
Likes: 0
