Wrong Water Pump Gasket with Aisin WPT-028?

[fraserb]

I ran a thin layer of cooling system RTV on both sides of the Toyota gasket. It wasn't the FIPG from Toyota but I think some kind of Permatex stuff. I think maybe this:

Amazon product ASIN B0007TQW60

Bolted her up and so far good to go. I used the Toyota FIPG on my oil pan and it seems much more rubbery. Seems to set up kinda like that silly putty you used to get years ago. The front of the pan leaks a bit but whatevs. That's a conversation for a different thread.

You might be right the gasket they put on there is a shipping gasket. Would be great to round out this thread to confirm if that's true or not. The Toyota manual shows how to actually repair the water pump and re-use it, which I still think is cool as all get out in this day and age of throw away. I assume the AISIN ones can be repaired the same way today, but am not sure on that. Maybe the parts to do so are no longer available. I don't recall seeing a thread on here where someone went through the trouble. Just cool at one point repairing a water pump was an option back in the day.

Hey Gretsch, I'm going to put FIPG on both sides of the gasket. Did you end up removing the studs to get your old pump out? I feel it will be messy in there if I have to juggle a double sealant gasket and tightening studs back into the block.
How'd you do it?

 

[Gretsch]

Hey Gretsch, I'm going to put FIPG on both sides of the gasket. Did you end up removing the studs to get your old pump out? I feel it will be messy in there if I have to juggle a double sealant gasket and tightening studs back into the block.
How'd you do it?

Yes, had to remove bolts to get old pump off. I used new pump to block bolts. I think I put sealant on the gasket, sort of stuck the gasket loosely on the WP, using a couple of the new bolts through the pump to hold it in place, and then started the bolts into the block, slide the pump against the block on the loose bolts, started the other two bolts, and then went around and torqued the WP bolts to spec. Honestly, the easy part of that job. If you do a very light coat of the sealant, you will minimize the mess. I don't think I would use that FIPG for the WP. It sets up too rubbery IMHO and I could see where it could squeeze out into the water flow passages. I am not sure I could get a thin enough coat on the gasket using it. It's sort of clumsy trying to manage the bolts, the pump, the gasket, etc. But it's really not that bad. GL and HTH.

Edit: Looks like you are doing this is on a 3FE. Mine was 2F just for clarity.

 

[Godwin]

Hey Gretsch, I'm going to put FIPG on both sides of the gasket. Did you end up removing the studs to get your old pump out? I feel it will be messy in there if I have to juggle a double sealant gasket and tightening studs back into the block.
How'd you do it?

I've used this sealant on two water pumps without issue. If you have not installed the water pump yet it may be a good idea to remove the plate on the back and add sealant between the plate and body of the water pump. I bought an Aisin 3FE water pump from Rock Auto and after installation discovered that it was leaking between the pump body and plate. Pulled it off, sealed with the FIPG and all's been good since. Next pump was a 2F, also Aisin from Rock Auto, with this one I preemptively sealed it before installation. In both cases I also used this FIPG on the water pump to block gasket.

 

[fraserb]

Yes, had to remove bolts to get old pump off. I used new pump to block bolts. I think I put sealant on the gasket, sort of stuck the gasket loosely on the WP, using a couple of the new bolts through the pump to hold it in place, and then started the bolts into the block, slide the pump against the block on the loose bolts, started the other two bolts, and then went around and torqued the WP bolts to spec. Honestly, the easy part of that job. If you do a very light coat of the sealant, you will minimize the mess. I don't think I would use that FIPG for the WP. It sets up too rubbery IMHO and I could see where it could squeeze out into the water flow passages. I am not sure I could get a thin enough coat on the gasket using it. It's sort of clumsy trying to manage the bolts, the pump, the gasket, etc. But it's really not that bad. GL and HTH.

Edit: Looks like you are doing this is on a 3FE. Mine was 2F just for clarity.

Ah gotcha, thank you very much for the response. Really appreciate it.
Not too long ago I worked on a 2F haha!

 

[fraserb]

I've used this sealant on two water pumps without issue. If you have not installed the water pump yet it may be a good idea to remove the plate on the back and add sealant between the plate and body of the water pump. I bought an Aisin 3FE water pump from Rock Auto and after installation discovered that it was leaking between the pump body and plate. Pulled it off, sealed with the FIPG and all's been good since. Next pump was a 2F, also Aisin from Rock Auto, with this one I preemptively sealed it before installation. In both cases I also used this FIPG on the water pump to block gasket.

Interesting! I wonder if that’s what cityracer meant when he said put fipg on both sides of the gasket.
Thanks for the heads up. Will seal that!

My does have a gasket between backing plate and bump. Did yours?

 

[ToyotaMatt]

Interesting! I wonder if that’s what cityracer meant when he said put fipg on both sides of the gasket.
Thanks for the heads up. Will seal that!

My does have a gasket between backing plate and bump. Did yours?

- he means you apply black FIPG to both sides of the Gasket you will be installing with your new pump .....


- these are the OEM bolts , spring washers , and Gasket you have to buy separately from TOYOTA

it does not come with a new pump

 

[ToyotaMatt]

 

[fraserb]

View attachment 3251378

Thank you for the very detailed post. I’m on a 3FE so unfortunately have studs not bolts.

 

[ToyotaMatt]

Thank you for the very detailed post. I’m on a 3FE so unfortunately have studs not bolts.

oh , sorry ...

well in that case , this fellow , does things in a unique way and has a few SOLID things and ideas to share for sure
\

 

[Godwin]

My does have a gasket between backing plate and bump. Did yours?

Yes and I added sealant to it on both sides.

 

[fraserb]

Yes and I added sealant to it on both sides.

Awesome. Thank you!

 

[fraserb]

Yes and I added sealant to it on both sides.

Well... upon removal, and I did it carefully, my gasket did not hold up... This is a new, sealed bag AISIN pump.

Does anyone know if this is salvageable?
The soonest I can get a new gasket like this is Monday. What a pain!

 

[S.CarolinaFZJ80]

Did you guys just remove the "shipping" gasket between the pump and back plate and only use FIPG there.

 

[fraserb]

Did you guys just remove the "shipping" gasket between the pump and back plate and only use FIPG there.

Great question! I disposed of the gasket it came with and went all FIPG. Whether or not that’s the right approach I don’t know. It’s held up thus far!
I think the important think to note with the FIPG is to keep a continuous bead.

 

[Spike Strip]

For best results, use both gaskets with a thin smear of Blue RTV. Blue is formula for coolant. Let cure at least a few hrs before filling system with coolant.

 

[S.CarolinaFZJ80]

Thanks @fraserb & @Spike Strip
The reason I brought it up is that my pump to plate gasket was attached with some sort of Elmers Glue type adhesive on about 1/3 of the mating surface to both sides.

I carefully removed it but this is what it looks like.
Wondering if I should risk trying to use this one. With the blue Alison FIPG on both sides

 

[Spike Strip]

If the integrity of that gasket is good, not torn, gouged etc, I'd use it with RTV. Just be sure you don't use too much so it squishes out into the pump cavity. The RTV will compensate for most imperfections.