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

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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