96 intake swap question? Heater core?

[RedZMonte]

there are 2 hoses that hook to the lower intake manifold... one is the coolant pipe that goes to the water pump, the other is the throttle body. which one does the heater core attach to? i assume it plugs to the coolant pipe.. what attaches to the nipple on the intake arm/throttle body? the 1991-95 only has the one coolant line, so i assume i can plug/bypass the one on the throttle body completely and not worry about it... i understand it heats the TB..

where is the coolant return for the heater core attach to on the engine? for some reason im drawing a blank right now..

S

[RedZMonte]

So the nipple under the TB connects to a hose.... Where does the hose go? Anyone? Do both the hose from the lower intake and below the throttle body connect to the heater core?

here is the nipple under the TB im refering too.

[RedZMonte]

here are the '96 heater core lines they connect to. i only have 1 line on the '95.. are they both feed lines or is one a return? where is the 2nd heater core line on the '95? there obviously has to be a feed and a return... i only have one line that runs up the drivers side that was connected to the lower intake manifold on mine.. Just want to make sure before i put it all together im not retarded and not hook something up correctly or most importantly plug a coolant passage i wasnt supposed to..


S

[94GPGTP]

Shane,
What do you want to do? do you want to continue using the pipe along the wheel well? That fitting on your 95 on the Water Pump is plugged on the 96/97.. Thats because both heater core lines are on the DS of the car.. They went "smart" doing this by getting rid of that long could rust pipe.. But anyway i would say that that pipe on the wheel well is a return.. and the supply is coming off the TB on the 95..

On the 96 the Hose coming from the TB is the supply and the Hose going to the Pipe that runs in front of the engine is the return.. So Did you grab the pipe that runs in front of the engine off the 96? If you did run that and plug the fitting on the waterpump and pull the pipe out that runs along the wheel well.. Then maybe you can find some prebent hoses and run your hoses from under your TB to the heater core..

LMK if that helps ya and if you need any other help.. I may have some more pics for ya and i can get you some pics of the engine right now without the UIM on..

Robert

[RedZMonte]

I did get the pipe that runs around the front of the engine on the '96... What i was thinking is put the pipe that runs infront of the engine in, then hook a hose from that pipe to the original '95 heater heater core pipe (ends above the brake booster). and plug off the hole in the '96 lower intake where the intake arm/tb plugs into (my downipipe hits the nipple off the throttle body). Would that work? or is the coolant not flowing the right direction to and from the heater core that way?

Does that make sense?

S

[RedZMonte]

The heater core pipe im talking to is the original one in the '95, next to the brake fluid cap in upper center of the pic. It originally connected to the lower intake of the '95 (has that stupid fitting that connects the hose to the lower intake).


Here is why i was not wanting to use the nipple off the new throttle body... it is like 1/8" off the downpipe, cant really hook a hose to it.


S

[94GPGTP]

On the 95 that pipe would be the feed... So if your wanting to keep the wheel well pipe in place and running the 96 Pipe to that line above the booster it wont do you any good.. You would be circulating coolant but it wouldnt be hot.. The nipple that is touching the DP is going to be hot coolant going to the heater core and the pipe that runs in front of the engine is your return of cooler coolant.. im not sure if we both are understanding each other.. But you have 2 options i guess.. Make a new downpipe so you can have clearance for the hoses.. or block off all coolant passages and forget heat..

[bve32k]

The heater core pipe im talking to is the original one in the '95, next to the brake fluid cap in upper center of the pic. It originally connected to the lower intake of the '95 (has that stupid fitting that connects the hose to the lower intake).


Here is why i was not wanting to use the nipple off the new throttle body... it is like 1/8" off the downpipe, cant really hook a hose to it.


S

I had that hole on the 96 lower intake welded shut. At first I tried using a bypass plug, but it ended up blowing out over time.

[1988GTU]

Welded FTMFW!

[RedZMonte]

I had that hole on the 96 lower intake welded shut. At first I tried using a bypass plug, but it ended up blowing out over time.

So the one that you welded is the source for hot coolant and the tube that runs around the front of the engine is not. so if i leave both the original heater core lines from the '95 in the car i wouldnt get hot coolant if i hooked into the " '96 pipe" that wraps around the front is that what you are saying? Thats kinda sucky.... lol now i need to find a way to make the TB nipple work.... Angle it up and use steel braided line i guess is going to have to work... changing the downpipe isnt going to happen... HUGE pain in the ass and really very little room to do so....

So you welded the hole, so you have no heat to the heater core is that what i understand?

S

[bve32k]

I still have heat in the car. The metal line that runs from the water pump to the lower intake has a split in it to go to the heater core and to the lower intake. That is a stock coolant pipe.

I got Josh's (OldSkool) info to do that. It was easiest for me to do it this way.

[RedZMonte]

lol im all fuked up now.. im probably making this way harder then it should be..
Keeping the stock '95 heater core lines (one on the pass wheel well, other over brake res.)
1.) ok so, block the coolant to the throttle body from the lower intake manifold (as you pictured)
2.) install '96 pipe that runs in front of the engine to lower intake man.
3.) connect hose from the "T" of the '96 pipe (mentioned in #2) to the original '95 heater core pipe by brake res.

is that correct? If so that is what i was trying to say the whole time but wasnt able to spit it out.

LOL sometimes you just cant fix stupid.... if feeling pretty stupid.

[bve32k]

lol im all fuked up now.. im probably making this way harder then it should be..
Keeping the stock '95 heater core lines (one on the pass wheel well, other over brake res.)
1.) ok so, block the coolant to the throttle body from the lower intake manifold (as you pictured)
2.) install '96 pipe that runs in front of the engine to lower intake man.
3.) connect hose from the "T" of the '96 pipe (mentioned in #2) to the original '95 heater core pipe by brake res.

is that correct? If so that is what i was trying to say the whole time but wasnt able to spit it out.

LOL sometimes you just cant fix stupid.... if feeling pretty stupid.

Correct! I will see if I have a pic.

[RedZMonte]

Correct! I will see if I have a pic.

im easily confused sometimes lol but now i see the light.

what kind of plug did you use that gave out? im thinking because its in the car now of using a metal freeze plug like whats used on the engine block and pounding it in. If i would have realized i wasnt going to use the coolant to the TB i would have welded it up from the get go before it was installed. im guessing once the lower intake is torqued down the intake gaskets are no longer re-usable...

Thanks man!

[bve32k]

im easily confused sometimes lol but now i see the light.

what kind of plug did you use that gave out? im thinking because its in the car now of using a metal freeze plug like whats used on the engine block and pounding it in. If i would have realized i wasnt going to use the coolant to the TB i would have welded it up from the get go before it was installed.

Thanks man!

I guess I have no pics of this pipe. I couldn't find it anywhere so I bought it brand new from the dealer. It was around $30.

I used a rubber freeze plug which blew out one day when i was reving high. Coolant all over the ground.