Throttle body coolant issue - ZR-1 Net Registry Forums

DarkAngel · 05-03-2014

Hello everyone,

Ive replaced recently my throttle body with a custom one from Carter

I also bought a new gasket from jerry

And unfortunately, now there is a coolant leak from it

Do u ever had this kind of problem ?

FU · 05-03-2014

I like that Carter cover. Nice addition.
Did you put sealant on the gasket ? Clean off all old gasket material ?
I would just bypass the coolant line.

PhillipsLT5 · 05-03-2014

FU has the right idea

DarkAngel · 05-03-2014

Quote:

Originally Posted by FU

I like that Carter cover. Nice addition.
Did you put sealant on the gasket ? Clean off all old gasket material ?
I would just bypass the coolant line.

clean off gasket material yes
put sealant on the gasket ... no

I thought the gasket would be enough

Franke · 05-03-2014

Quote:

Originally Posted by FU

I like that Carter cover. Nice addition.
Did you put sealant on the gasket ? Clean off all old gasket material ?
I would just bypass the coolant line.

I have that problem and I will do what FU says to bypass the coolant to the TB. I ordered a bypass pipe from Marc Haibeck and it can be done without removing the plenum. Marc indicates no issues down to 20 degrees and 98% humidity. The coolant leak causes the paint around the plate to deteriorate.

Dynomite · 05-04-2014

See item #4 LT5 Eliminated Systems

On this LT5....For the purest I Eliminated TB Coolant by plugging the single port in each Injector Housing Only (as well as return line to Coolant Reservoir is blocked). That way you get the full advantage of Plenum Removal without having to mess with coolant in any way (On three other ZR-1s, TB Coolant is completely blocked with ALL associated lines removed)

You will see a spice in the line returning to the Coolant Reservoir which contains a plug so coolant cannot get into the TB from the Injector Housing but cannot get the the TB from the Coolant Reservoir either.

05-03-2014	#1
DarkAngel Join Date: May 2013 Location: France Posts: 55	Throttle body coolant issue Hello everyone, Ive replaced recently my throttle body with a custom one from Carter I also bought a new gasket from jerry And unfortunately, now there is a coolant leak from it Do u ever had this kind of problem ?

05-03-2014	#2
FU Join Date: Mar 2004 Location: Found Member Posts: 4,346	Re: Throttle body coolant issue I like that Carter cover. Nice addition. Did you put sealant on the gasket ? Clean off all old gasket material ? I would just bypass the coolant line. __________________ Frank Urbo. NCM Lifetime member # 982 Registry Founding # 237

05-03-2014	#3
PhillipsLT5 Join Date: Aug 2005 Location: Scottsdale, AZ Posts: 2,452	Re: Throttle body coolant issue FU has the right idea

05-04-2014	#6
Dynomite Join Date: Aug 2009 Location: South Dakota/California Posts: 3,797	Throttle body coolant Blocking See item #4 LT5 Eliminated Systems On this LT5....For the purest I Eliminated TB Coolant by plugging the single port in each Injector Housing Only (as well as return line to Coolant Reservoir is blocked). That way you get the full advantage of Plenum Removal without having to mess with coolant in any way (On three other ZR-1s, TB Coolant is completely blocked with ALL associated lines removed) You will see a spice in the line returning to the Coolant Reservoir which contains a plug so coolant cannot get into the TB from the Injector Housing but cannot get the the TB from the Coolant Reservoir either. __________________ Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 05-04-2014 at 07:24 AM.