Whistle sound from new timing gear
 

Hi,

I installed a new “Model A Aluminum Timing Gear” and a new “Model A Camshaft Thrust Plunger with spring”.
Now I always hear a pretty loud whistle sound from there.( I didn’t have this before)
Is there maybe not enough lubrication ? How is it lubricated ?
:confused:

Thanks for help
Willi

Re: Whistle sound from new timing gear
 

It is lubricated by oil spilling out the front of the valve chamber on the side of the engine and falling down on the gears.

If the fan belt is connected, temporarily disconnect it and see if the noise is still there. The noise might be from the water pump or generator/alternator turning.

Does the pitch of the sound change with RPM? If so, you might be hearing the steel gear teeth contacting the aluminum gear teeth. Ford used a fiber gear to reduce noise.

.

Re: Whistle sound from new timing gear
 

I drill a 1/16" hole in the top of the plunger housing. Did you check the camshaft to crank gear clearance. Should be around .003-4

Re: Whistle sound from new timing gear
 

The whistle or "squeal" may be the new plunger spinning in the front cover housing bore. It will often take a bit of time for this noise to subside. A few minutes usually.

The noise of a new aluminum timing gear mating with the steel crank gear is more of a whine. This too will subside with a bit of running time. Unless, as PC/SR brings up, there is lack of clearance.

Concerned about oil flow over the timing gear? Remove the timing pin and start the engine. If there is oil flowing over the timing gear it will work its way out of the timing pin hole.

Hope it's all as simple as I describe and it goes away within a short time.
Good Day!

Re: Whistle sound from new timing gear
 

The timing gear plunger MUST be greased when it's installed. One guy didn't lube it during installation, and it took several heat/cool run cycles before the squeal finally stopped for good.

Re: Whistle sound from new timing gear
 

Dave is right that oil will come out of the timing pin hole if left open. Plenty of it. I proved this scientifically on a 30 mile drive.

Re: Whistle sound from new timing gear
 

"Remove the timing pin and start the engine. If there is oil flowing over the timing gear it will work its way out of the timing pin hole."

Thanks, this is a very good and simple test. Thanks

Re: Whistle sound from new timing gear
 

Funny - 2 weeks ago, I made about 1500 miles with my A - so you would stop about 50 times for this test ? :p