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Re: Differences between the thermostat housings.

A section to help identify the most common parts that can fail and need replacing, for servicing etc, also the parts that are compatible through the Marks
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Re: Differences between the thermostat housings.

Postby Mazda Mender » Thu Dec 20, 2012 10:49 pm

The differences between the water pump outlet pipes, thermostat housing and tops..........
Left to right....

Mk 2.5 1.8cc-1.6cc, thermostat housing, note the wider pipe on the T piece and the thermostat opening is at the front......
Mk 1 1.8cc/ Mk 2 1.8cc-1.6cc, thermostat housing, note that the thermostat opening is at the front........
Mk 1 1.6cc, Thermostat housing, note that the opening for the thermostat is on the top.......

Common faults:- The body is made of alloy and the T piece steel, so the T piece rusts from the inside out causing a leak, the only cure is to replace the full unit.

DSCF1859_zps6231971b.jpg (411.62 KiB) Viewed 215 times

DSCF1860_zps39d75a6a.jpg (430.75 KiB) Viewed 215 times

DSCF1861_zps1f49ecd3.jpg (383.47 KiB) Viewed 215 times


Thermostat Housing tops....

Left to right....

Mk 1 1.8cc/Mk 2 1.8cc-1.6cc/Mk 2.5 1.8cc-1.6cc

Mk 1 1.6cc ,Note the port for the sensor - the fan switch

DSCF1862_zpsc464ca02.jpg (417.47 KiB) Viewed 215 times


Water pump outlet pipes....

The top one is for the Mk 2.5 1.8cc - 1.6cc, Note the wider curved small pipe.
The bottom one is for the Mk 1 1.6cc - 1.8cc, Mk2 1.6cc - 1.8cc, note the thinner L shaped welded small pipe

Common faults:- The body is made of alloy and the L shape and curve are metal, so they rust from the inside out causing a leak, only cure is to replace the full unit.
UM00810.JPG (116.83 KiB) Viewed 821 times
NM00518.jpg (96.01 KiB) Viewed 821 times
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This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.

Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
MK 2.1/4 Blue V.S Roadster 1.8 99 ...being rebuilt

http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/

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