Hello guys, ;)
Following the replacement of a faulty seal on the water pump.
When I turn the water pump by hand, and depending on where I stop it. Water flows or not by the lowest screw.
I am surprised that there are no seals around the 4 screws. :thinking:
Is it normal or not?
I also saw that the heads of the 4 screws were machined by the black part that drives the 2 belts (alternator and power steering).
After changing the seal and made a silicone seal, I was forced to put washers so that the black part (drive 2 belts) can rotate freely.
I took the coast of the thickness of the head of 4 screws, the dimension is it good? :thinking:
For me the heads are too thick. :thumbdown:
Thank you for your advices :)
There never is seals near the bolts
I would use a thread sealer , you also need bolts with thinner heads if the pulley is grinding the heads no spacer should be behind the pulley as it changes the belt alignment
I would put a little sealant on the threads. Previous owner of mine ground the heads down to clearance for the pulley. I found a set of factory bolts to replace them. I'll take a picture for you if you want.
Quote from: Chryco Psycho on January 26, 2019, 09:17:50 AM
There never is seals near the bolts
I would use a thread sealer , you also need bolts with thinner heads if the pulley is grinding the heads no spacer should be behind the pulley as it changes the belt alignment
What is a sealer thread? If I use Teflon (like plumbing) around the threads of the screws, would that be good?
When I changed the seal, I put silicone around the threads of the screws. It seems that this is not the right method.
For screws, I suspected that those installed was not the right thickness. I'm going to look for a less thick model at the level of the head
Quote from: edison1970 on January 26, 2019, 09:21:06 AM
I would put a little sealant on the threads. Previous owner of mine ground the heads down to clearance for the pulley. I found a set of factory bolts to replace them. I'll take a picture for you if you want.
Thank you, you give me the same advice from Chryco by putting a putty around the screws.
Ok but what do you use as a product?
Regarding screws with reduced head, I would like the reference.
Quote from: THE ZUKE on January 26, 2019, 09:36:06 AM
Quote from: edison1970 on January 26, 2019, 09:21:06 AM
I would put a little sealant on the threads. Previous owner of mine ground the heads down to clearance for the pulley. I found a set of factory bolts to replace them. I'll take a picture for you if you want.
Thank you, you give me the same advice from Chryco by putting a putty around the screws.
Ok but what do you use as a product?
Regarding screws with reduced head, I would like the reference.
I simply grond the head down slightly using regular bolts. I guess you could use something fancy like these if you didn't care about looking original.
https://www.fastenal.com/products/details/1173815?term=button+head+cap+screw+3%2F8&r=~%7Ccategoryl1:%22600000%20Fasteners%22%7C~%20~%7Ccategoryl2:%22600039%20Sockets%22%7C~%20~%7Ccategoryl3:%22600043%20Button%20Socket%20Cap%20Screws%22%7C~
or
https://www.fastenal.com/products/details/0171415?r=~%7Ccategoryl1:%22600000%20Fasteners%22%7C~%20~%7Ccategoryl2:%22600039%20Sockets%22%7C~%20~%7Ccategoryl3:%22600041%20Low%20Socket%20Cap%20Screws%22%7C~%20~%7Csattr01:%5E%22Imperial%20(Inch)%22$%7C~%20~%7Csattr04:%5E3/8%22-16$%7C~%20~%7Csattr03:%5E%22Stainless%20Steel%22$%7C~
As for sealant I use this teflon on anything that see's coolant or fuel. Hope that helps you some?
Here are a few pictures of my junk for reference?
Make sure your bolts aren't too long.
Quote from: Brads70 on January 26, 2019, 10:18:30 AM
Quote from: THE ZUKE on January 26, 2019, 09:36:06 AM
Quote from: edison1970 on January 26, 2019, 09:21:06 AM
I would put a little sealant on the threads. Previous owner of mine ground the heads down to clearance for the pulley. I found a set of factory bolts to replace them. I'll take a picture for you if you want.
Thank you, you give me the same advice from Chryco by putting a putty around the screws.
Ok but what do you use as a product?
Regarding screws with reduced head, I would like the reference.
I simply grond the head down slightly using regular bolts. I guess you could use something fancy like these if you didn't care about looking original.
https://www.fastenal.com/products/details/1173815?term=button+head+cap+screw+3%2F8&r=~%7Ccategoryl1:%22600000%20Fasteners%22%7C~%20~%7Ccategoryl2:%22600039%20Sockets%22%7C~%20~%7Ccategoryl3:%22600043%20Button%20Socket%20Cap%20Screws%22%7C~
or
https://www.fastenal.com/products/details/0171415?r=~%7Ccategoryl1:%22600000%20Fasteners%22%7C~%20~%7Ccategoryl2:%22600039%20Sockets%22%7C~%20~%7Ccategoryl3:%22600041%20Low%20Socket%20Cap%20Screws%22%7C~%20~%7Csattr01:%5E%22Imperial%20(Inch)%22$%7C~%20~%7Csattr04:%5E3/8%22-16$%7C~%20~%7Csattr03:%5E%22Stainless%20Steel%22$%7C~
As for sealant I use this teflon on anything that see's coolant or fuel. Hope that helps you some?
Here are a few pictures of my junk for reference?
Thank you Brad70 for links :bigthumb:
Quote from: RUNCHARGER on January 26, 2019, 10:50:33 AM
Make sure your bolts aren't too long.
Bolts no but heads yes (I was sure). I have to change them by an other model. ;)
I also use teflon tape with liquid teflon sealer
Bon jour M. Zuke. If you look closely at Brads premiere photo, you'll see that he has shown a roll of teflon tape AND a tube of paste type sealer. You give the bolt about 3 wraps of the tape and then goop it with the sealant and you should be good. The "black thing" that has the belts, we call a pulley. Bonne chance, mon ami!
News of the leak ... :verymad:
Water always flows at the same place, :headbang: at the bottom screw but only at a specific point on a full turn of the water pump.
A small trickle of water is only present when I turn the axis of the pump by hand and I stop at a specific place.
I tried when starting the engine, there is no leak except when I stop the engine and the pump is at a specific place.
Nothing is logical in this phenomenon, :thinking: if the pump rotates quickly, there is no trickle of water. :'(
If you have an idea, I'm interested. :bigthumb:
Thank you in advance :thankyou:
Quote from: Chryco Psycho on January 26, 2019, 06:41:40 PM
I also use teflon tape with liquid teflon sealer
Thanks Psycho for the advice but the leak is very special. :verymad:
Quote from: THE ZUKE on January 27, 2019, 10:51:39 AM
News of the leak ... :verymad:
Water always flows at the same place, :headbang: at the bottom screw but only at a specific point on a full turn of the water pump.
A small trickle of water is only present when I turn the axis of the pump by hand and I stop at a specific place.
I tried when starting the engine, there is no leak except when I stop the engine and the pump is at a specific place.
Nothing is logical in this phenomenon, :thinking: if the pump rotates quickly, there is no trickle of water. :'(
If you have an idea, I'm interested. :bigthumb:
Thank you in advance :thankyou:
Strange problem? Is it a new pump? If so I would return it, maybe the shaft is bent slightly or machined out of center causing the leak?
Coolant is leaking out of the weep hole, and just appears to be coming from the bolt. You could try a sealant in the cooling system, but I wouldn't. Get a new pump.
I feel for you Zuke. That looks like a mopar performance pump. If it has a thicker housing than a standard pump , that might be why the pulley rubs the bolts. If it's the same thickness as a stock pump, I would look to see it the hub can be moved on the shaft. 2nd when you say you changed the seal , do you mean the gasket between the pump and housing, if you changed the gasket between the pump and housing , that has nothing to do with the pump leaking when you turn it by hand . You will need to rebuild the pump or replace. If you rebuild the pump then you could have the hub installed on the shaft minus he thickness of those washers, That wouldn't be enough to miss align the pulleys . Good luck
OK, so it looks like the leak is NOT coming out of that bolt, but rather dripping off it. Chryco and I can vouch for the fact that a new Mopar Performance pump that was installed on Andy's Cuda, leaked like a sieve when we started the engine and we ended up changing the pump- period. There's no reasonable explanation for it other than lousy quality control at the manufacturers. Not what you want to hear of course, but when she leaks at one particular spot, I don't see any other way out of it. Quel dommage, mon vieux. :bye:
Quote from: jimynick on January 27, 2019, 06:32:10 PM
OK, so it looks like the leak is NOT coming out of that bolt, but rather dripping off it. Chryco and I can vouch for the fact that a new Mopar Performance pump that was installed on Andy's Cuda, leaked like a sieve when we started the engine and we ended up changing the pump- period. There's no reasonable explanation for it other than lousy quality control at the manufacturers. Not what you want to hear of course, but when she leaks at one particular spot, I don't see any other way out of it. Quel dommage, mon vieux. :bye:
I also had the same new Mopar water pump that didn't last one summer before it leaked. Hate to admit it but quality is not what it used to be... :('
Clean all traces of coolant so everything is clean and dry then pressure test the cooling system, you will see exactly where source of the leak is without starting the engine and having it flicked and blown everywhere.
I have read all your answers and I thank you for that. :bigthumb:
In summary, in my opinion, having changed the first round seal on the front of the pump, to have teflon band and sealant on the 4 screws didn't change anything.
I have the impression that the trickle of running water when I turn the pump in my hand is the same.
The leak is always present at the same place on a full lap. While when the engine is running, there is nothing. :thinking:
I agree, it's a MOPAR PERF pump.
To follow your advice, I will change the pump even if it seems recent. :headbang:
Which brand and model do you recommend?
Thanks :thankyou:
I would just order a rebuilt from a parts store (probably a no go over there).
Looks like you have a warped pump. Pull it off and check it.
It would be easier to just buy a new one mon ami.
B
News of the day, water pump Edelbrock ordered. :dunno:
I hope this one will be better than MOPAR perf water pump.
I read on different reviews that a plenty of persons had problems with MOPAR perf.
Yes QC at Mopar Performance is pretty much non existent.
Quote from: RUNCHARGER on February 17, 2019, 08:23:14 AM
Yes QC at Mopar Performance is pretty much non existent.
Okay, I understand better the problems encountered. :verymad: