Water connection on 89
Thread Starter
Le Mans Master
Joined: Jul 1999
Posts: 5,005
Likes: 38
From: jackson nj
Water connection on 89
What is the reason GM put the water connection at the right rear of the TPI intake manifold of the 89 Vette? I want to do the LT-1 intake mod but it will not have that attachment so I'd like to know if it will cause any harm or problems? I know some other Vettes have had this intake manifold swap, but were any done on years that had this hose connection, and if so, what did you do about it??
Burning Brakes
Joined: Nov 1999
Posts: 859
Likes: 17
From: Houston TX
When I did the LT1 intake on my 89, I just drilled and tapped the back of the LT1 intake and put these connectors in.
All they do is prevent air from getting trapped in the rear of the head. If you follow that hose, it just dumps back into the heater hose. You don't have to have them, but why not?
I run a Mini-Ram now and I just left them off.
All they do is prevent air from getting trapped in the rear of the head. If you follow that hose, it just dumps back into the heater hose. You don't have to have them, but why not?
I run a Mini-Ram now and I just left them off.
Le Mans Master
Joined: Oct 2008
Posts: 9,758
Likes: 49
From: Houston Texas
When I did the LT1 intake on my 89, I just drilled and tapped the back of the LT1 intake and put these connectors in.
All they do is prevent air from getting trapped in the rear of the head. If you follow that hose, it just dumps back into the heater hose. You don't have to have them, but why not?
I run a Mini-Ram now and I just left them off.
All they do is prevent air from getting trapped in the rear of the head. If you follow that hose, it just dumps back into the heater hose. You don't have to have them, but why not?
I run a Mini-Ram now and I just left them off.
What he said. I put a HSR on mine left them off.
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
But the real reason it's there is to supply a sufficient amount of coolant at the rear of the heads which on the Vette, uses a restriction to keep coolant there longer. There's no steam - or air - or anything else in that hose - or if there is, you Cooling system needs some attention. To eliminate it, you need to eliminate the restriction, which you can do by getting some F Body intake gaskets which doesn't use this setup.
Le Mans Master
Joined: Oct 2008
Posts: 9,758
Likes: 49
From: Houston Texas
But the real reason it's there is to supply a sufficient amount of coolant at the rear of the heads which on the Vette, uses a restriction to keep coolant there longer. There's no steam - or air - or anything else in that hose - or if there is, you Cooling system needs some attention. To eliminate it, you need to eliminate the restriction, which you can do by getting some F Body intake gaskets which doesn't use this setup.
