E30 Thermostat Question

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  • CarsonE30
    R3VLimited
    • Jun 2015
    • 2124

    #1

    E30 Thermostat Question

    Hey r3v, if you open your hood and are looking at your thermostat from above, there are 2 bolts, not the 4 that connect the housing to everything, but 2 on top that supposedly keep the coolant in. If anyone can tell me what size those are or any other info, it'd be greatly appreciated. Thanks!
    C6Z
    S2K
    VeloN
  • jlevie
    R3V OG
    • Nov 2006
    • 13530

    #2
    M20B27 engines (ETA) have four ports in the top of the thermostat housing for sensors. M20B25 engines have two ports for sensors. the current replacement part for the housing has four ports as that works on either engine. When using it on an M20B25 you plug two of the ports. I think the plug ia a short 14mm bolt.
    The car makes it possible, but the driver makes it happen.
    Jim Levie, Huntsville, AL

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