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View Full Version : Thermostat thread size?

r0ddy
02-06-13, 10:45 PM
Hi, does anyone know the thread size of the thermostat? Going to be plugging the hole, If not then chemical metal it is!

Thanks,

Chris
Sid Squid
02-06-13, 11:10 PM
What bike are you asking about?
Do you mean the bolts that hold the thermostat housing together?
Not sure why you would wish to 'plug' them.
r0ddy
02-06-13, 11:33 PM
Sorry, meant to stick this in the sv section.

I've got a thermostat housing but no thermostat. I don't really need it as its a race bike, seems to be easier to get The entire housing and stat, but rather than have a spare housing sitting in my garage that will never get used I'd rather just plug it.
jambo
03-06-13, 01:09 PM
Just out of interest do you mean the temperature sensor in the thermostat housing?

The Thermostat itself which is in that housing is a device that you would not want to replace with a blank unless you wanted to get very limited use of the radiator.

If this is a 99-02 carb fuelled bike removing the temperature sensor will be OK, but for an 03+ you may find the fuelling is affected by not having this input.

Jambo
r0ddy
03-06-13, 09:31 PM
Hi guys
Firstly I'm talking about my pointy engined curvy

Secondly I've been a div,I meant the temp sensor in the housing, I have no thermostat to go in my housing but I'm pretty sure running it without one just means coolant will always flow through the rad.

Not really a problem as it's a race bike and will be thoroughly warmed up before its run.

Feel free to correct me if you believe me to be wrong...

Thanks,

Chris
jambo
04-06-13, 08:30 AM
I can have a check this evening if that's useful? I have a curvy engine out at the moment so can pop this out and measure the thread & pitch. Hopefully it's the same for all years :)

Jambo
r0ddy
04-06-13, 04:01 PM
I'm pretty confident it will be the same size for all years,

If you could check the size of yours I'd really appreciate it.

Thanks,

Chris
jambo
04-06-13, 08:10 PM
Seems to be an M10, but surprisingly fine pitch, seemingly narrower than M10x1.0, which is the finest thread measuring gauge I have in the garage.

A quick check with a vernier gauge has 10 threads in 9mm.

Jambo
Sent from my thingie
yorkie_chris
04-06-13, 08:17 PM
Is it a tapered thread?

Possibly JTPT which I think interchanges with BSPT.