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Still trying to figure this overheating thing out.

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Re: Still trying to figure this overheating thing

texas_bugeye said:
Make sure you get a new cap and insure its the correct one it makes a HUGE differance. Make sure the primary seal sits proud enough to seal correctly.
The one I got from Moss was wrong! I thought it was 4Lbs?
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Is there a particular brand/kind I should look for? They are not that expensive.
 
Re: Still trying to figure this overheating thing

IF, really big IF.. you have a GOOD radiator shop in town, the price for a rebuild will be about the same as getting a NEW one. In which case get it rebuilt. As cheap as the metal being used offshore has been, you "NEW" one won't last 5 years, whereas a good shop can make one BETTER than ORIGINAL.

I made that choice 5 years ago. .. in 85 degree weather, climbing the Rocky Mountains (ever driven I-80 East out of Salt Lake City?) the highest temperature I achieved was about 205. Loaded car, two people. NO oil cooler..
 
Re: Still trying to figure this overheating thing

regularman said:
Is there a particular brand/kind I should look for? They are not that expensive.
Click to expand...
The NAPA #7031-411 cap usually works well. Make sure that it is new stock with a good rubber seal at the top. Some of the older caps did not have a good seal.

However, with pin hole leaks, the recovery system will never work correctly.
D
 
Re: Still trying to figure this overheating thing

Pythias said:
IF, really big IF.. you have a GOOD radiator shop in town, the price for a rebuild will be about the same as getting a NEW one. In which case get it rebuilt. As cheap as the metal being used offshore has been, you "NEW" one won't last 5 years, whereas a good shop can make one BETTER than ORIGINAL.

I made that choice 5 years ago. .. in 85 degree weather, climbing the Rocky Mountains (ever driven I-80 East out of Salt Lake City?) the highest temperature I achieved was about 205. Loaded car, two people. NO oil cooler..
Click to expand...
All, the 1275s came with an oil cooler as original. I wonder if that 1100 is a bit different in the heat transfer area. I know there is a difference in the head gaskets from experience :wink: I don't know of a good shop right off hand, but I will hang onto my two old ones and see if I can get a shop to make me one good on out of those some time and keep it for a spare or something. I like spares.
 
Re: Still trying to figure this overheating thing

I got the electric pusher fan installed. It looks good in there after I did a bit of cutting on the housing to get a better fit and got it all bolted down in there. I might take a pic tomorrow since it will be a while before I get the radiator. Also, it frees up a lot of space in there with no fan on it. You can actually reach down and pick up things you drop :wink:
 
Re: Still trying to figure this overheating thing

Kim - I'm at daughter's...will get price to you tomorrow & get radiator ordered first thing Monday morning....oh, got your email.
 
Re: Still trying to figure this overheating thing

home...relaxing after a weekend chasing a 2-year old!

Will email you tonight.
 
Re: Still trying to figure this overheating thing

Paypal is done. Next week for the Rad. Now I can work on what I am going to do about my fuel pump. One is too low and the other too high a pressure. Plus I ordered some jets last week and they should be here soon. I need to get the carb all set. It will be nice to have both my major problems solved.
 
Re: Still trying to figure this overheating thing

Just an FYI, I called the two radiator shops in my town to ask them about boiling out and cleaning my downflow radiator on my '66 Sprite.

One said he'd do it for 45 dollars and the other said he'd do it for 20 dollars.

I didn't realize it was so cheap. I might go that route if my vinegar treatment tonight leaves me disappointed.
 
Re: Still trying to figure this overheating thing

Boiling & cleaning then leads to repairing which adds cost to the process.
 
Re: Still trying to figure this overheating thing

One thing to really ream out the radiator is a home product called CLR (Calcium-Lime-Rust) Grey bottle and very caustic. Be very careful using it and don't leave it on concrete for any length of time. If you have any holes in the radiator that are currently plugged with scale, this will open them up nicely.

Glen Byrns
 
Re: Still trying to figure this overheating thing

I think the used radiator that I bought a few years back and installed during the rebuild had been boiled out with some kind of cleaner and this might have caused all the tiny holes in the radiator tanks. The inside of them looks clean but there are just these tiny holes that you cannot see only see them with air in the system and it layed down. I can't see how else the holes would have gotten there. I used to use a solder seal brand of radiator cleaner that worked real good to clean out a system but you had to use that neutralizer afterwards and good or you just ruined the system. I made up a special pump and used that stuff the clean out the motorcycle radiator. I did not want it going to the rest of the system. Just out of the rad and through the pump and back into the rad and heated it with a propane tourch (aluminum rad) and after 10 minutes all kinds of nasty stuff came out and it then cooled the bike real well. I know some of that stuff works well, but I cannot find that stuff any more and I would like to have it to do the bike rad agaain some time.
 
Re: Still trying to figure this overheating thing

Radiator arrived last night...going out 1st thing Monday!
 
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