1FZF carburetor gasket question

[t00manyuserz]

Hi all,

Replacing the heat insulator on the bottom of my 1FZF carb. Ordered the insulator and it came with two metal gaskets - top and bottom. My current one had RTV on them which was a right nightmare to remove, but somehow just metal gaskets also feels a little suspicious (so I can understand why the original work was done with RTV, but it wasn’t Toyota work I think).

FSM says just put as is. Should I do as it says or should I make a gasket from some gasket material and sandwich the heat insulator and metal gasket assembly between some more paper gaskets? Any experiences welcome.

 

[VPP]

Hi all,

Replacing the heat insulator on the bottom of my 1FZF carb. Ordered the insulator and it came with two metal gaskets - top and bottom. My current one had RTV on them which was a right nightmare to remove, but somehow just metal gaskets also feels a little suspicious (so I can understand why the original work was done with RTV, but it wasn’t Toyota work I think).

FSM says just put as is. Should I do as it says or should I make a gasket from some gasket material and sandwich the heat insulator and metal gasket assembly between some more paper gaskets? Any experiences welcome.

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If you notice the metal gasket have ridges for sealing, I would use them. Be easier to take off next time.

 

[t00manyuserz]

If you notice the metal gasket have ridges for sealing, I would use them. Be easier to take off next time.

Wait what do you mean? Are you saying I should put RTV on the ridges? (not clear on the “sealing” part)

 

[Lead Head]

Those metal ridges around the holes crush and form the seal. No need to RTV or cut paper gaskets.

 

[3_puppies]

RTV and gasoline don't work well together

install clean and dry

 

[t00manyuserz]

Yep thanks. I mounted it dry and my leak is gone, woohoo... or so I thought for the first 30 seconds of my pressure test, which now identified the PHH as the next leak point a little bit hopeful that since it's the carb 1FZ-F, it appears to be a little bit easier to reach than on the injected engines... which isn't saying a whole lot considering where it is, lol. Waiting for the hose to arrive at the dealer, will have to see what I do with it after...

 

[Godwin]

Yep thanks. I mounted it dry and my leak is gone, woohoo... or so I thought for the first 30 seconds of my pressure test, which now identified the PHH as the next leak point a

Rite of passage, you'll get through it.

 

[DrRock]

As others have said, install sans rtv. The Toyota gaskets of this style are designed for a dry application. 1FZ-F is a great engine, I have one in my 75 and love it.

 

[t00manyuserz]

Thanks. Did it that way, looks good. Does this mean if I ever remove the carb I need to get another gasket though? If it’s a crush application it’s single use?

 

[OGBeno]

Thanks. Did it that way, looks good. Does this mean if I ever remove the carb I need to get another gasket though? If it’s a crush application it’s single use?

Correct. Those gaskets are not available separately from the insulator assembly itself.

Don’t take the carb back off.

 

[t00manyuserz]

Correct. Those gaskets are not available separately from the insulator assembly itself.

Don’t take the carb back off.

Understood. Not that I think this information is available anywhere, but is there any guidance on when these insulators will go NLA? I feel like I should have a spare one if the carb ever has to come off for any reason, but I don't REALLY want to order one right now...

 

[VPP]

Thanks. Did it that way, looks good. Does this mean if I ever remove the carb I need to get another gasket though? If it’s a crush application it’s single use?

Yep!