Thread: Adding temp sensor to Edelbrock Performer RPM - a little help?

Tweet

Like the title says, I am putting a coolant sensor on the manifold. It looks like the threaded hole is 1/2 inch. The sensor I bought is 1/4 inch.

Do they sell 1/2 inch sensors or do I need some type of adapter to bring it down to 1/4 inch?

If they do sell 1/2 inch sensors, what do I tell the guys at the auto parts store when they can only find parts by make and model (since this is a new crate engine in a Fiero)?

Thanks for any help-

The reducer for a temperature gauge usually comes with the gauge. I believe Autometer, Stewart Warner, and the other gauge companies sell them separately....

Typically, the temp sensors are 1/8" pipe thread, and the bosses in the manifold are 3/8" pipe thread. Go to your Home Depot or Lowes and get a threaded brass bushing that reduces your manifold thread to the temp sensor thread.

Which reminds me . . . I installed mine with teflon tape. Bad move. Insulator. Off to the store for some dielectric grease.

I got dolphin guages and it came with the spacer

Thanks for the good info. Off to Lowes again!

Denny,

Of course it is!

(note to self: Think, then type . . .)

If you cannot find what you need p.m. me , I have 2 or 3 I will mail you 1 . 31 5w

Well, I do thank you guys for the help.

I cannot thank the guy that sold me this car, though. He put a regular intake on these Vortec heads, so there has been coolant leaking into the engine.

I don't know how to tell if there is damage, but I do know that I can't use this Edelbrock 7102 m this engine. I need a 7116. It has only been run for a few minutes, but who knows how much rust is in there thanks to him.

Jeez!!!

Thanks, Denny. The thing I am worried about is whether the previous owner let the coolant into the engine and then let it set for 6 months. It can't be good for water to sit in there for 6 months.

I am hoping that what he did was to take off the good/new intake and replace it with this one when he knew he had the car sold. At least the coolant would not have gotten into the engine a long time ago.

I'll let you know how it goes. Time to look for a 7116!

The coolant would go to the bottom of the pan. It shouldn't do anymore damage than a blown head gasket.

Originally Posted by cffisher

The coolant would go to the bottom of the pan. It shouldn't do anymore damage than a blown head gasket.

Whew! That's good news!

Coolant mixes with oil into a brown milkshake looking mixture, it can cause bearings to spin due to lack of lubrication

Originally Posted by Matt167

Coolant mixes with oil into a brown milkshake looking mixture, it can cause bearings to spin due to lack of lubrication

Luckily, the oil still sitting on the head looks like it is still oil, not the milk shake so far. I will drain it all and check for sure. Maybe I got lucky and there is just a bit in the pan.

Yes but if left to settel out it goes to the bottom. Drain change filter, run drain change filter.Replacing oil each time you replace filter. I've done that a lot of time when head gaskets blow and never once did I spin a brg. Just lucky I guess.