2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Thermowax Valves NLA - Options going forward?

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Old Nov 2, 2023 | 12:45 PM
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Thermowax Valves NLA - Options going forward?

Hey guys, so if my thermalwax is bad and they're no longer available, are we just SOL?

After opening my thermalwax due to idle issues - I took mine off and inspected it to find wax actually leaking out past the little plastic thing that screws in...now what lol.
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Old Nov 3, 2023 | 08:49 AM
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From: https://www2.mazda.com/en/100th/
N326-13-W87 is available, Mazda has a bunch. its just the Wax thing and not the assembly
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Old Nov 3, 2023 | 11:59 AM
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So im a little confused. I thought the thermowax valve was this assembly? Is this something else?


Edit: So i may have mispoken, and called the part below the thermowax valve but its actually just a thermovalve (?) after doing a little more digging. Atkins has it listed as a Thermal Wax valve and the part that @j9fd3s is referring to is a Thermowax pellet.





Last edited by maaaaackle; Nov 3, 2023 at 12:10 PM.
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Old Nov 3, 2023 | 12:22 PM
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From: https://www2.mazda.com/en/100th/
Mazda calls that a Valve, Thermo; N304-13-980A which us NLA
easy to bypass it
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Old Nov 3, 2023 | 12:43 PM
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@j9fd3s Do those go bad? Are these operated with vacuum? Does coolant flow through any of those nippels ?
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Old Nov 3, 2023 | 12:47 PM
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From: https://www2.mazda.com/en/100th/
Originally Posted by maaaaackle
@j9fd3s Do those go bad? Are these operated with vacuum? Does coolant flow through any of those nippels ?
when its cold vacuum passes through it, and it pulls the secondary throttle shut.
when it warms up vacuum gets blocked, and the secondary plates open.

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Old Nov 3, 2023 | 01:39 PM
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Thank you for the info!

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