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sapsz28 05-15-2012 06:37 AM

temperature sensor
Does any knowwhat size an RHS aluminum head has for the temperature sensor which is located on the drivers side cylinder head between # 1 and 2 apark plug its the pro act5ion 200 cc aluninum head thanks everyone.

bracketeer 05-16-2012 05:13 AM

i don't think it has ports for that.
i put mine in the intake.
if it does it will be same size as stock.
if i remember correctly its 3/4 pipe thread

Bryan59EC 05-16-2012 06:58 PM

1/2 in or
3/8 if a small hole

a 3/4 pipe thread hole would be about an inch or more in diam.

bracketeer 05-20-2012 08:56 PM

there the same size as a heater hose nipple. i thought they were 3/4 inch

Bryan59EC 05-22-2012 05:02 PM

Nope---1/2" pipe thread

a 1/8" pipe thread is larger than a 1/4"

Custom10 05-23-2012 09:51 PM

Should be 1/2" NPT, 3/8 NPT hole wont fit typical after market gage bulb and fitting

1/8 hole wont fit a 1/4 inch anything :confused:

Blazin72 05-23-2012 10:10 PM

I get a kick out of this thread. Pipe thread sizes seem to confuse everybody. It's funny. :D

1971BB427 05-24-2012 09:05 PM

Many aftermarket aluminum heads have 3/8" pipe thread holes for temp sensors. Mine do. The stock factory heads are 1/2" pipe thread.

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