Trying to restore the TB coolant flow

[Jim Nolan]

I know about Jerry's and have purchased from him. When I needed it years ago he wasn't in business.

[Hog]

Originally Posted by scottfab

I leave it unaltered because it was designed in so that ice does
not form in the plenum. Ice formation was responsible for damage to some proto type LT5s during development.
.

Did the damage have anything to do with a prototype LT5 being stuck at WOT due to a stuck t-body blade? I wonder if the prototype ECM calibrations were rev limited?

Icing t-bodies are a horrible feeling, gotta get to the ignition quick and shut er down.

These types of mods are popular because they CAN be done by the layman, not much heat would be transferred into oncomming air from the t-body at WOT.

peace
Hog

[scottfab]

Originally Posted by Hog

Did the damage have anything to do with a prototype LT5 being stuck at WOT due to a stuck t-body blade? I wonder if the prototype ECM calibrations were rev limited?

Icing t-bodies are a horrible feeling, gotta get to the ignition quick and shut er down.

These types of mods are popular because they CAN be done by the layman, not much heat would be transferred into oncomming air from the t-body at WOT.

peace
Hog

No recollection of any stuck blades or over rev. As I recall there was ingestion of ice that broke loose. Maybe JVD remembers. It's all in the email archives of the old list.

[Z51JEFF]

Originally Posted by Ronstar

Dumb question..but why do guys eliminate this?

I bypassed mine to keep the TB paint form getting damaged.Im in Ca,cars stays in the garage so Im not worried about it.

[scottfab]

Originally Posted by Z51JEFF

I bypassed mine to keep the TB paint form getting damaged.Im in Ca,cars stays in the garage so Im not worried about it.

I keep my TB top plate well sealed. No paint damage. And I never worry about icing. My TB coolant hose is in place.

[Paul Workman]

Originally Posted by Ronstar

Dumb question..but why do guys eliminate this?

My reasons...

1) Much "stuff" is under the plenum. Without having to fuss with draining coolant and refilling it (and getting the air out of the system), bypassing or (as I did) plugging the passages off entirely elimiates both PIA parts associated with coolant draining. (With air ratchet in hand, I can have the friggin plenum off in about 5 minutes (leave the throttle lines connected), and on again in a few more (depending on condition of the gaskets). Fussing with coolant can easily add an hour to that process, has been my experience.)

2) The plenum runs significantly cooler (tho I too question the idea of much heat actually being transferred to the air at WOT), and the corrosion issue (even with new gaskets!) bit me a couple times. But, cooler is better for performance, and every little bit helps. (Lingenfelter provides some thick insulating gaskets to isolate the plenum from engine heat, FWIW.) Marc Haibeck told me he has run his in the Chicago area for years and in sub freezing temperatures w/o any problem with icing. Same goes for me, tho I admit I don't drive it more than a few minutes in winter and never on foggy days either! I'm not at all worried about it.

To scottfab: For a liberal, you're awfully conservative about making changes - at least as far as the LT5 goes!!

P.

[scottfab]

Originally Posted by Paul Workman

....snip....
To scottfab: For a liberal, you're awfully conservative about making changes - at least as far as the LT5 goes!!

P.

I'm fairly neutral when it comes to the the bypass. I think there's plenty of evidence to show icing is an extremely rare event. I choose to error on the side of caution mostly because the climate I'm in. So with me it is a "thought through" decision. That's the difference between an ultra conservative and a moderate like me. I get what facts I can and decide. If you continue doing progressive things like thinking and weighing pros and cons before you decide things you're going to loose your membership as a card carrying conservative. Next thing you know you'll be labeled a radical =D>
Here is an interesting site for measuring yourself against know liberal and conservative morals. You can find out where you "really" are not where you "think" you are. The down side is it take a commitment of time to find out.
http://YourMorals.Org

[scottfab]

Originally Posted by Dynomite

Is the political part of your discussion On Topic

I can see how YOU would see this as political. I think you should be making your "funny" attack on Paul. I was just responding. I don't particularly see this as political. It's more of an approach to problem solving and the "handles" put on the approach to decision making. There is no mention of candidate or political party therefore no politics...... it's only YOU fanning the blaze by using the word "political" see my funny faces

Originally Posted by Dynomite

You kind of backed of TB icing saying icing is an extremely rare event especially in my view that the TB coolant system is essentially an air bleed system vice a TB heating system

Did you mean "of" that makes no sense.
I bet your meant "off". I would have posted that in a PM but I'll keep with your style of making such things public.

The rest of your statement makes no sense to me. But then it is "your view" so I guess that's fine. Based on the facts I have, the plenum coolant system was added to avoid icing NOT as an air bleed system but you can call it "your" air bleed system.

Originally Posted by Dynomite

And then only if you have difficulty refilling your coolant system after opening it up for leak repair or Plenum/IH Housing, Head removal or Water Pump repair.

Very incomplete list of "opening it up for ....."
You forgot starter, coils, wires, injectors, etc, etc and also etc.

[Z51JEFF]

Originally Posted by scottfab

I keep my TB top plate well sealed. No paint damage. And I never worry about icing. My TB coolant hose is in place.

Ive found the coolant saturates the gasket and at some point can migrate towards the painted area of the TB plate.

[scottfab]

Originally Posted by Z51JEFF

Ive found the coolant saturates the gasket and at some point can migrate towards the painted area of the TB plate.

Yah, I've heard of that happening. I solved that by using rubber gaskets on both the plenum and TB cover. That was over 10yrs ago. No runs, no drips, no errors since. The side benefits are you don't have to pay for new gaskets because they don't stick, rip apart nor allow coolant to migrate toward the paint.