What might the adjustment bolt be used for on the bottom of a water pump (Snyder's part number T-3900-WP)? It looks like it would be a 'stop' adjustment, but there isn't anything close enough on the engine for it to go up against.
One of these pumps was on my '24 Roadster when I got it from my Dad. I had removed it with the intention of leaving it off, but with the distinct possibility of being able to 'run' in some parades this summer ... I thought I would give it a shot.
Yes, yes .. I've heard all, the pros and cons of having it on, or not, 'Henry didn't put one on', and leaks etc. No need to hash that all out again. It's 2 bolts and it's back off again.
Thanks in advance,
Dennis, That bolt pushes on the block to tighten the belt. Its a poor setup but its on several I think. I have used one for several years. Works just fine for trips to the ice Cream parlor. Scott
HI, Robert ...
That's what I thought it was for .. but I don't think it would be long enough, even screwed all the way out, to come close to the block. That pulley sure does hang a long way away from the outlet bolts! Sure seems like it would help!
Just a little more hash: If you are going further than the ice cream parlor, carry a spare water inlet, a longer water pipe, and a shorter fan belt.
Do NOT use the bolt for any adjustment except, when the pump is bolted on, the single bolt goes up to the block, and the lock nut is then tightened.
The reason for the bolt then is to keep the pump from being pulled out of alignment from tightening the belt, and or busting the casting when you adjust the fan belt.
The bolt is NOT a belt tightener!
Looks like who ever machined the bolt into the pump, was cross eyed.
But that is the way with Rep's.
Ted ... yep .... I have all that. I ran all last summer without a pump. It was fine as long as I was moving. It wouldn't be so good in a parade. Luckily, the parades around here are short. ;-) Last fall, I ran without a fan as well.
I pulled the radiator, had it 'checked out' a the local radiator shop (folks tell me he's good), and am waiting for proper mounting bits to get things back together. I'm going to try the pump again, once all is back together, and see how things go.
I've done the 'let it find it's own water level' thing, but once it gets below the top of the tubes, I get nervous. I just got a motometer as well, so maybe I'll get some real time feedback now. I could certainly be running the engine 'hot' due to my timing setting. I'm always fiddling with it, trying to find the 'right setting.
Hey .. at least I'm not bolting an electric fan on the radiator. :-)
Kohnke .... yes, understood. It would be good to have some extra support that far away from it's mounting. I don't know as the bolt is long enough to get to the head, though, so no worries on it being used to tighten the belt!
Yes ... that photo is out of Lang's catalog, but looks like a used unit! Mine is a Berg (Bergs?).. but is very similar.
ON my radiator .. he pressure tested it ... no leaks, but that really doesn't adress the radiator's efficiency in cooling .. i.e. how well the fins are connected to the tubes, etc. It's a 3-row core... and found a couple small solder spots from previous repairs, while cleaning it.
It wouldn't be the first time that a bolt had to be replaced with a longer one on a repro pump.
If it's a 3 row flat tube it should be a decent radiator. If it's was like the 3 row round tube that was on my 24 its not so hot ( or more aptly extra hot). Its now a recored 3 row flat tube which cools excellently.
With the Model T radiator and no water pump, if the level drops below the level of the radiator inlet you no longer have thermosyphon circulation and water will start to boil.
I run my car in parades all the time with the correct, thermosyphon system. No problems at all. My water pump is on the garage floor where it belongs.
Garage "floor space" is too valuable for a water pump. That is what nails on the outside wall are for.
The advantage of a waterpump is lost without a thermostat.
Unfortunately, a less-than optimum shape 3-row round tube. Someone just posted a pretty nice looking radiator, with wavy fins.... looked like it might be a pretty nice one, but I don't remember if it was old, or new, or what topic .. LOL ...
If it was a top notch radiator good shape, I probably wouldn't think twice of keeping the pump off. We'll just see how it goes. It's nobody's problem but mine if I take the two bolts off the pump and switch to the straight pipe. I'd certainly rather go with one less part to break down. There is certainly an amount of bragging rights to say your car doesn't need a pump! I have more pressing things to spend my money on than a radiator, at this point. I'm damn lucky I can squeak out $20 or $30 at a pop for the little parts I get now!