Need water pump replacement instructions
Cargo Master
Joined: Mar 2007
Posts: 2,825
Likes: 1,030
That's like asking what brand of oil to use. The best way is the way you like. Most of us rarely replace a coolant pump twice on the same engine. Except when you buy the cheap parts.
Different metals react to each other differently. Some places in the world have more rust issues too.
Different metals react to each other differently. Some places in the world have more rust issues too.
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5th Wheeling
Joined: Apr 2023
Posts: 34
Likes: 2
Ha. I'm just trying to understand where to coat the bolts and what product is recommended. Like, 10W40 v 5W30. Not Castrol v Pennzoil.
And which bolts to coat, and where?
And which bolts to coat, and where?
Last edited by rallison203; Apr 4, 2023 at 03:56 PM.
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5th Wheeling
Joined: Apr 2023
Posts: 34
Likes: 2
I bought Permatex anti seize. It’s in a bottle for $10. https://www.oreillyauto.com/detail/c...ti+seize&pos=0
Someone I known uses this stuff and says it works good.
Someone I known uses this stuff and says it works good.
FTE Chapter Leader
Joined: May 2006
Posts: 12,338
Likes: 1,314
From: Central Mississippi
I use nickel anti seize on everything that screws or bolts on the outside of the block.
Will never use anything but stainless on something I plan on keeping, particularly the water pump-TC area.
My next 2 small blocks I'm using SS 5/16 all thread made into studs & SS flange head nuts for the 4 holes, 2 passages that pass coolant to pump to block through timing cover
I'm a big "belt & suspenders" kinda' guy. I use silicone (very light finger spread, BOTH sides) & Felpro gaskets.
Will never use anything but stainless on something I plan on keeping, particularly the water pump-TC area.
My next 2 small blocks I'm using SS 5/16 all thread made into studs & SS flange head nuts for the 4 holes, 2 passages that pass coolant to pump to block through timing cover
I'm a big "belt & suspenders" kinda' guy. I use silicone (very light finger spread, BOTH sides) & Felpro gaskets.
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5th Wheeling
Joined: Apr 2023
Posts: 34
Likes: 2
Thanks fellas. Please let me try again.
91 F250 7.5L big block 460 engine.
* Which WP bolts need sealant to prevent leaks?
* What type (not brand) of sealant is recommended?
* And where on the bolt would you apply the sealant (threads, shaft, head, or combo)?
Thanks again.
91 F250 7.5L big block 460 engine.
* Which WP bolts need sealant to prevent leaks?
* What type (not brand) of sealant is recommended?
* And where on the bolt would you apply the sealant (threads, shaft, head, or combo)?
Thanks again.
Hotshot
Joined: Jul 2020
Posts: 10,471
Likes: 2,633
From: Near Salt Lake City
Liquid teflon not tape
On the threads only
Sure you do not need to coat the threads on the ones that do not go into the coolant
Do it anyway so you do not break the bolts next time
Liquid teflon pipe and thread sealer is the type
You are way overthinking this!
On the threads only
Sure you do not need to coat the threads on the ones that do not go into the coolant
Do it anyway so you do not break the bolts next time
Liquid teflon pipe and thread sealer is the type
You are way overthinking this!
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5th Wheeling
Joined: Apr 2023
Posts: 34
Likes: 2
Ha, yes, maybe so. I just don't like doing things twice.
Thanks to everyone for their advice.
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5th Wheeling
Joined: Apr 2023
Posts: 34
Likes: 2
I got the timing cover cleaned up, new water pump and lower pump hose installed, and the bolts in and coated. That was a bear. Tomorrow I'll finish up.
Here's a piece of advice for anyone changing the pump on this engine. About 5 or 6 of the long bolts pass through the timing cover, and thread into the block. Altho you can't see it, the deep female threads will have a ton of rust on them. PBB and compressed air won't clean them up. I twisted 5 pipe cleaners together, dunked them in solvent and scrubbed each hole about 4 times before they were finally clean enough.
The backing plate cleaned up nicely, so I primed and painted it. I couldn't decide on whether to use sealant so I checked with Gates. Their tech report says no sealant. So that's what I did, except for some small pitted areas on the timing cover mating surface.
Everything looks good so far but I'll be amazed if the timing cover to block gasket doesn't leak. The one they say might leak if you don't pull the timing cover as part of this job, which I decided not to do. Speaking of doing things twice.
Here's a piece of advice for anyone changing the pump on this engine. About 5 or 6 of the long bolts pass through the timing cover, and thread into the block. Altho you can't see it, the deep female threads will have a ton of rust on them. PBB and compressed air won't clean them up. I twisted 5 pipe cleaners together, dunked them in solvent and scrubbed each hole about 4 times before they were finally clean enough.
The backing plate cleaned up nicely, so I primed and painted it. I couldn't decide on whether to use sealant so I checked with Gates. Their tech report says no sealant. So that's what I did, except for some small pitted areas on the timing cover mating surface.
Everything looks good so far but I'll be amazed if the timing cover to block gasket doesn't leak. The one they say might leak if you don't pull the timing cover as part of this job, which I decided not to do. Speaking of doing things twice.
Last edited by rallison203; Apr 5, 2023 at 07:02 PM.
FTE Chapter Leader
Joined: May 2006
Posts: 12,338
Likes: 1,314
From: Central Mississippi
Every time I see a round wire brush, especially long ones, I try & pick them up.
Summit sells an inexpensive std. thread chase set that cleans out crap without damage. Maybe on your next order if you use them.
Should have mentioned when you asked for info/tips, sorry & hope it works.
Summit sells an inexpensive std. thread chase set that cleans out crap without damage. Maybe on your next order if you use them.
Should have mentioned when you asked for info/tips, sorry & hope it works.
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5th Wheeling
Joined: Apr 2023
Posts: 34
Likes: 2
Ok this has been bugging me so I need to ask, please.
I installed the WP backing plate with the concave side facing the impeller. In other words, the bulge on the assembled pump is facing away from the impeller, and towards the timing cover as installed.
That's the correct assembly, right? You actually can't mount this plate backwards, right??
I installed the WP backing plate with the concave side facing the impeller. In other words, the bulge on the assembled pump is facing away from the impeller, and towards the timing cover as installed.
That's the correct assembly, right? You actually can't mount this plate backwards, right??
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5th Wheeling
Joined: Apr 2023
Posts: 34
Likes: 2
I painted the water pump, cleaned all threads, painted and coated all the bolts, installed a 195 thermostat, installed new belts and hoses, reassembled everything without gasket sealant, and torqued the WP and thermostat housing bolts to spec. No leaks, looks great. All for under $100.
Thanks again everyone.
Thanks again everyone.
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