Engine Block Plug Size - Help??
In a discussion earlier about installing an electric fan, it was mentioned that the best place to install the temperature sensor was in the plugged hole in the block near the oil filter.
I had a chance to look under there and found a hex keyed plug that is installed just under one of the block's freeze plugs (in my case, under the block heater). Is this the plug that was referred to? And if so, does anybody know what the thread size is?
I only want to drain the coolant once during this install, so it would be nice to have all the necessary parts. I'm also not really comfortable drilling the intake manifold without the boss that was on the '99 and '00 L's.
Any help would be greatly appreciated.
I had a chance to look under there and found a hex keyed plug that is installed just under one of the block's freeze plugs (in my case, under the block heater). Is this the plug that was referred to? And if so, does anybody know what the thread size is?
I only want to drain the coolant once during this install, so it would be nice to have all the necessary parts. I'm also not really comfortable drilling the intake manifold without the boss that was on the '99 and '00 L's.
Any help would be greatly appreciated.
I have been wondering the same thing.... size that is. I would prefer using that instead of drilling into the manifold.
I can remember a post not to long ago that somebody commeted they used the plug near the oil filter. Don't remember which board now. Maybe here.
It looks as though it is 3/8" which is the size of the temp sensor.
The kit I have from JDM also has a collar on it for 1/2" just incase.
I can remember a post not to long ago that somebody commeted they used the plug near the oil filter. Don't remember which board now. Maybe here.
It looks as though it is 3/8" which is the size of the temp sensor.
The kit I have from JDM also has a collar on it for 1/2" just incase.
Hi Tim
I talked to Jim a few weeks ago about this same thing. He called me back on Monday and said he had looked into it and it was a perfect place for the sensor. He told me to send him the sensor that came with the fan kit and he would send me a cooler temp sensor that will screw right inti that drain plug.
He is going to use this plug for all his future fan kits, and the threads in the drain plug are the same as the new temp sensor. So give him a call on tuesday when he gets back from Virginia and he will take care of you.
I hope this is the news you are looking for, I bet it is.
I talked to Jim a few weeks ago about this same thing. He called me back on Monday and said he had looked into it and it was a perfect place for the sensor. He told me to send him the sensor that came with the fan kit and he would send me a cooler temp sensor that will screw right inti that drain plug.
He is going to use this plug for all his future fan kits, and the threads in the drain plug are the same as the new temp sensor. So give him a call on tuesday when he gets back from Virginia and he will take care of you.
I hope this is the news you are looking for, I bet it is.
Thanks Don I will get with Jim Tuesday. Julie had mentioned earlier he would be back Tuesday.
I just checked the Painless Performance Products web site and the thermostat we got for our kits(30103) is the lowest that they advertise. 185* on and 170* off.
http://www.painlessperformance.com

I just checked the Painless Performance Products web site and the thermostat we got for our kits(30103) is the lowest that they advertise. 185* on and 170* off.
http://www.painlessperformance.com
Last edited by jarmstro; Jul 27, 2001 at 07:09 PM.
Thanks Don, that is indeed good news.
I have never drilled and tapped a hole over 1/4" that worked especially well. With a hand drill, forgetaboutit. Thank God I don't have to go through that trauma!!
I have never drilled and tapped a hole over 1/4" that worked especially well. With a hand drill, forgetaboutit. Thank God I don't have to go through that trauma!!


