Hello,

My understanding all you do it pop off the left side 5/8" tube (Heater control valve/converter), pop off the right side 5/8" (goes to intake water outlet) and put the two ends together..

Where exactly do you find this brass fitting (with 2 male ends)? What exactly is this piece called if I were to head over to the local home depot? Is it 5/8th?

I read on some places you can cap the male ends that you just popped the tubes off of.. Where do you get these caps and what are they called? (what would I ask for and can you get them also at the local home depot?).

I seen on some tutorials on this bypass people running the tube OVER the TPI funnel.. WHY would you do this? Why can't you just run it underneath where the tubes are anyways? The TPI funnel would hide the hose and the (cheap looking) bypass of the two hoses together would it not?

Thanks

 

just about any parts store, hardwear, or hydrolic store. tell them the size of the 2 lines you want to join and you'll be set.

 

here's a pic of mine. i didnt plug the male ends of the TB and i used a 5/8 fitting that i got from advanced auto. came in a little bag with a couple of clamps.

 

I read a few times where peoples cars would stop working after doing this. People mentioned something about the coolant getting into the OIC or something? What's that and where is this?

How much coolant is going to come out of the throttle body when you put the tube out? Do I need a CUP? or napkin?

To verify:

Here is a pic of the TPI section: Color coded the tubes and parts.

http://www.camarosource.ca/bypass.jpg

RED: What is this? Do I need to pull it out? What would happen if I did? Reset anything? Configure anything?

PURPLE: What is this? Do I need to pull it out? What would happen if I did? Reset anything? Configure anything?

BLUE: What is this? Do I need to pull it out? What would happen if I did? Reset anything? Configure anything?

GREEN: My understanding, THIS is what I unclamp, coolant will come out, (how much?) and I will join this to the opposite side tube.

 

dunno what OIC means. not possible for TB bypass to make the car stop working.

[QUOTE]How much coolant is going to come out of the throttle body when you put the tube out?[QUOTE]

not much

red and purple are both vacuum lines. red is for ventilation of the crankcase and purple i believe goes to the carbon canister. i would leave those on.


blue you need. its the TPS. computer uses it.

[QUOTE]GREEN: My understanding, THIS is what I unclamp, coolant will come out, (how much?) and I will join this to the opposite side tube.[QUOTE]

yes

HTH

 

In order to get to the coollant tube on the throttle body (green), it looks so much easier if you disconnect both the Crankcase Ventilation host (Red) and the hose to the carbon canister (Purple) to get access to the green coolant tube. And temp disconnecting the TPS to get access.

The reason I ask if I can remove these to get access without having to worry about reconfiging anything is because I don't have normal crimp clamps on my hoses, rather they are clamps which are held with a screw to prevent them from loosening.

Problem is that I can't get access to the screw unless I unplug, and temporarily pop off these hoses.

But I obviously do not want to pop them off if it will screw up the computer, reset something, need reconfiguring or anything.

I just want to be able to pop these off (Purple, Blue, and Red), connect the hose from the left (green) and right (other side of TPI body) together, pop them (blue, purple, and red) back on and have NO PROBLEMS. Start the car and drive off exactly like it was before. (perhaps some better throttle response or hp?).. Any idea how much HP and TQ one can expect?

This is an automatic transmission equipped 1992 Camaro Z28 if that matters.

 

yea you can remove 'em temporarily to get to the hoses. thats what i did. thought you were talkin about permanently for some reason.

i doubt this adds any HP at all although some ppl say they notice better throttle response. you cant lose anything from doing it, and you wont have to worry about loosing coolant everytime you remove the TB.

 

I just went out to purchase the 5/8" brass double male mender.

On the packaging it says "For outdoor use with cold water only"

This is a mender for regular garden hoses.

http://www.cornerhardware.com/item_2...se-Mender.html (EXCEPT I BOUGHT THE 5/8" ONE)

Can I use this for joining the two hoses together? The coolant gets HOT so will there be something wrong if I use this since it says to use with cold water only?

Thanks

ALSO. I just went out to pick up this mender, went out to pick something up to eat.. Approx 20 mins or so of driving.. The TPI is HOT!! How long would you estimate until the coolant and TPI will be cool enough to work with and safe enough to pull the hoses out and connect them together with the brass mender?

It's 5:15pm now.

 

ok. Tried it. After MUCH stress, got the right side hose popped off, but the left side I can't budge.. I can't even really get to it.. The other hose above (red) and plug (purple) are in the way. I didn't want to unplug them both as I was worried I would do something.

I would like to unplug the one in front (yellow) where all those green/blue wires are connected to. It will help to allow room to access the hose (green) but WHAT is that plug (yellow) and what would happen if I unplugged it temp just to get access and once bypass made, I would of course plug it in? Have to re-configure anything?

And once this is all done, HOW do you get that hose off?? I unscrewed the clamp, and there really is no where to pull the hose off the male end on the tpi and it's such a SHORT hose and because it's on a downhill hose, when you disconnect the hose will that coolant flow all over the place? How much will I be needing to cleanup?

Also, what is that plug they use to plug the male ends on the TPI where you just pulled the hoses off? Very last (working pic) pic.

http://timney.cz28.com/tbbypass.htm

What's that plug called and where can I buy them?

1 more thing, I put the 5/8" brass male ends into the 1 hose (right) that I was able to get off. It was the right size but looks like it needed some kind of wrapping or something to prevent coolant from leaking. Would I wrap plumbers tape?

 

once again unplug or disconnect anything that's in your way and put it back when you're done. you wont have to reconfigure anything. all you should be using is the fitting and a couple of clamps. loosen that one hose on the intake manifold end, turn it enough so that it meets the other hose. tighten everything up and you're done.

you shouldn't lose that much coolant but when you're about to start the car, open the radiator cap. start it and if the fluid is low, top it off.

 

[EDIT: Dang it, you beat me to it]

camarosource,

I think you may be making this more difficult than it really is, but it'll be a learning experience. Just for knowledge purposes, the (YELLOW) plug is the Idle Air Control (IAC) motor and the (BLUE) plug is the Throttle Position Sensor (TPS). Don't worry about unplugging these, nothing is going to happen. Just make sure you plug them back in before starting the car. And if it helps, you can also pull the crankcase hose off, it won't hurt anything.

I'm not exactly sure which hose you haven't got off yet, but if I was guessing, your talking about the really short one the is actually a pre-formed hose. Once you get the clamp to where it will just kind of slide down, take a wide bladed screw flat head screwdriver and just pry it out, you'll probably make a small mess, but it shouldn't be anything to really worry about.

 

What about wrapping the brass barbed double male end mender ends? Cause it didn't seem like that good a TIGHT seal..

Also, any tips on getting the left side hose off? I unclamped it and didn't have much to work with in pulling it off the tpi.

The right side was easier to take off (well PITA but..) because the clamp even though was loosened, was stuck on the hose so I was able to grasp the clamp and rotate up and down and the hose eventually was able to be slightly twisted off.

However the left side clamp was free moving and so I need to somehow pull the hose itself but with nothing really there to pull, how?

 

that fitting looks exactly like the one i used. i didnt wrap anything and i've had no leaks in *** knows how long since i did this.

if the hose wont come off try gettin a small screwdriver in there somehow or a real long one. get the tip inside the hose and just open it up a bit. move it around with your hand as you're doing this. no trick to it, you just have to keep working it.

 

Excellent. Only 1 remaining.. The plug.. where do you get that? and what's it called? What size?

 

forget about the plug. you dont need it. unless you're doing it just for looks. i dunno maybe a hardware store would have something like that.

 

Do you know what size Vacuum plugs I would put? (I want to).

 

I'm been thinking.. Could someone please explain to me how this bypass is said to add approx 6 rwhp and a bit louder intake suction sound?

Yes, I realize that the main idea is so the HOT coolant is not being fed in the throttle body housing which in turn would mean the air sucking into in the intake would also be warmed up.

But if you start your car and drive in the morning for the first time that day, your coolant is not hot (has not warmed up) so wouldn't the first start of the day seem like it's bypassed since the coolant is NOT warm. And then when the car engine warms up the hot coolant bypass modification would be useful? and THAT is when the 6hp is thought to be added? And bypassing the throttle body, HOW can this increase the intake suction sound?

If this is my understanding, I would think you have the norm hp when you first start the engine for that day. You lose approx 6 rwhp when the coolant is hot and it feeding through the throttle body where the air entering the throttle body is warmed up as a result. The throttle body coolant bypass mod would only be adding BACK the rwhp you apparently lose when the coolant is heated in the throttle body? Would this not be the case which would mean this mod is NOT in fact adding any "EXTRA" rwhp but in fact replacing what you LOST when it was in the throttle body?

Thanks for your help. Just made me wondering after I sat down and thought about it for a second and read people saying it ADD's approx 6rwhp more..

 

Rather than putting the two coolant hoses together with a double male brass coupling, can I just use a 5/8" Heater hose?

I seen I can purchase a "5/8th Heater Hose" and can cut it down to size.

I still have not received an answer as to what these plugs are called? I went to Canadian Tire and they didn't have a clue what I was referring to and had no idea what it was called.

I want to buy the rubber plugs to plug up the tpi male ends where you remove the hoses from (coolant lines).

 

I did that mod and a TPI SLP airfoil... actually did notice a difference. No problems yet, but I heard it's a bihtch in the cold weather...