For those of you how have deleted the TB coolant lines from
your engine, what did you use to plug the TB holes with?
Some sort of bolt (Where to get the right size from)? I know
about just running a small hose to close off the other ends.
Since I going to do alittle work on the engine I thought this
woult be a good time to delete these. Thanks for your inputs
here.

All I did was to take some silicon or something like Goop and fill the two holes, worked great.

I'm glad that you recognize that the excessive heat generated by those "cooling" lines to the throttle body hurt perfornance. You need cold air and less heat there not more. Just remove the tubes to the throttle body and to the thermostat housing. Put a dab of silicone sealer in each of the feed tubes and cap them off with a hose cap and a small compressible hose clamp. Don't expect to pick up a seond in the 1/4 mile but your zero to sixty will improve.

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, 3.4" Pulley, N* TB, LS1 MAF, Flotech Exhaust Autolite 104's Custom CAI 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

Just FYI, the holes in the throttle body don't need to be plugged. The coolant loop through the throttle body is self-contained. So you're not going to create any vacuum leaks or anything like that. You can literally unbolt the lines and leave it like that.

The connections on the thermostat housing, however, do need to be capped. You can use a short piece of hose to loop between them, or pipe caps like Dennis mentioned.

while you dont need to close of the holes on the TB - you can get pretty brass or copper plugs in the plumbing section of any hardware store

Blacktree is correct.
You do not need to plug them.

Larry, why dont you come over and take a look see at mine. (you live very close to me)
I had this done ages ago but for a different reason than what was mentioned above.
I did it to "clean up" the engine compartment and to gain better access to the distributor.
PM me your cell and I'll tell you how to get to my place.

Kit

Anyone know why Pontiac put the coolant lines there to begin with? I had a VW Baja bug as a teenager and had a tough time with the dual carbs icing up the intake in the winter, could that be the purpose? I was considering removing them while I had the upper Plenum off to clean the injectors and also took the Throttle Body off to clean it as well. During re-assembly I just put the coolant lines back on.

It is very easy to delete the lines though with a short bypass loop... might do that.

quote Originally posted by sgrieve: Anyone know why Pontiac put the coolant lines there to begin with?

It wasn't just Pontiac; many (most?) GM cars have had a similar setup for years. F-Body guys have been deleting the coolant lines for almost as many years.

It's to keep the throttle body from icing up and sticking open.

I used these from the Help section of Advance Auto

http://www.woodys-auto-supp...s.asp?prod=MTM-02412

Don't remember exactly which one fits but 2000 miles later they are still there. I had to tap them in with a soft hammer to get them to seat. Looks pretty decent. Sorry to dark to take pictures at the moment.

OK thanks for the input. I know it won't cause a vacume leak,
but I want it to look pretty too. So maybe I'll try to find some
brass fitting that will work (sounds like a good solution). Also,
will do the looping the line at the other end.

Kit, Do you still want to get together? Do I know you from
the club? I think I have my answer already. Just trying to
get the car looking pretty for Westfest.

Larry, i have the white 86 GT.
I first met you at Westfest in Truckee.
You were telling me about your car cover and how LONG you have had it, patches and all.

Anyways, I will PM you my number shortly.
As I recall you live in the Rose Garden area, right?

Kit