M104-AMG

iTrader: (8)

Two questions:

1) is there a metal gasket (like for the front cover and waterpump) for the two large square-like coolant passages (circled in green), on the thermostat housing to the front cover ?
2) what's the pn# for the gasket between the filler-neck and thermostat housing, and is there a metal gasket as well ?

Thanks,
:-) neil

DaleClark

iTrader: (55)

I have never seen one. The RX-8 front cover gasket is actually the front cover AND the water pump housing to block gasket in metal and all in one piece. But, I don't think it fits the 13B-REW.

Kind of surprised as all the other gaskets have been changed to metal.

RX-8 gasket:



Web page:

04-08 Rx8 Front Cover Gasket (N3H1-10-502)

The gasket is $24, may just be worth buying it and snipping the top piece of the gasket out .

Dale

DaleClark

iTrader: (55)

Oh, BTW, you are talking about the water pump housing. The thermostat housing is the small housing with the fill cap on top and the upper radiator hose connection.

Dale

M104-AMG

iTrader: (8)

Now that I remember, I did use the RX8 front cover gasket snipped, as it's cheaper than the "other" metal gaskets (N390-10-502 or N390-10-5020) and includes that metal coolant gasket between front-cover and block.

However, I'm looking for two other gaskets (preferably metal):

Thermostat housing to front cover (circled in green, post#1). I can probably get another RX8 front cover gasket and snip that coolant gasket out and use it if the right shape (originally for block-side).
Filler-neck to thermostat housing (circled in red, poste#1, picture #2)

Thanks,
:-) neil

BTW: you might want to use an anaerobic sealant instead of RTV/Silicone so if a piece comes loose there nothing to block any coolant or oil passages.

j9fd3s

iTrader: (3)

me and my friend have used the Rx8 gasket untrimmed* several times on different engines and it works fine.

there is no metal thermostat gasket i'm aware of, the Rx8 uses a rubber seal like the FD, although its a larger diameter


*you have to trim something minor, i don't recall what.

Nakd n Fearless

iTrader: (4)

Here's a paper one:
86-95 Rx7 Water Pump Housing to Block Gasket...

The part number is N386-15-162

IRPerformance

iTrader: (41)

You can use the rx8 front cover gasket but you will need to trim around one of the front cover bolts. You will see when you lay the gasket down. I like to use some hylomar or a thin coating of silicone on it as these cars are older and the metal gasket may not seal as well to a pitting water pump housing.