Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 10-16-2018, 07:18 AM   #1
wkuehnis
Member
 
wkuehnis's Avatar
 
Join Date: Dec 2016
Location: Switzerland
Posts: 59
Question 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 ?


Thanks for help
Willi
wkuehnis is offline   Reply With Quote
Old 10-16-2018, 08:28 AM   #2
Jim/GA
Senior Member
 
Jim/GA's Avatar
 
Join Date: May 2010
Location: Young Harris, GA
Posts: 1,808
Default 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.

.
__________________
Jim Cannon
Former MAFCA Technical Director
"Have a Model A day!"
Jim/GA is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 10-16-2018, 02:14 PM   #3
PC/SR
Senior Member
 
Join Date: May 2010
Location: Santa Rosa, CA
Posts: 1,276
Default 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
PC/SR is offline   Reply With Quote
Old 10-16-2018, 03:04 PM   #4
Dave in MN
Senior Member
 
Dave in MN's Avatar
 
Join Date: May 2010
Location: Jordan, MN
Posts: 1,410
Default 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!
Dave in MN is offline   Reply With Quote
Old 10-16-2018, 04:39 PM   #5
Tom Wesenberg
Senior Member
 
Tom Wesenberg's Avatar
 
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
Default 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.
Tom Wesenberg is offline   Reply With Quote
Old 10-17-2018, 03:07 PM   #6
PC/SR
Senior Member
 
Join Date: May 2010
Location: Santa Rosa, CA
Posts: 1,276
Default Re: Whistle sound from new timing gear

Sponsored Links (Register now to hide all advertisements)
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.
PC/SR is offline   Reply With Quote
Old 10-18-2018, 03:45 AM   #7
wkuehnis
Member
 
wkuehnis's Avatar
 
Join Date: Dec 2016
Location: Switzerland
Posts: 59
Default 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
wkuehnis is offline   Reply With Quote
Old 10-18-2018, 03:48 AM   #8
wkuehnis
Member
 
wkuehnis's Avatar
 
Join Date: Dec 2016
Location: Switzerland
Posts: 59
Wink Re: Whistle sound from new timing gear

Quote:
Originally Posted by PC/SR View Post
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.
Funny - 2 weeks ago, I made about 1500 miles with my A - so you would stop about 50 times for this test ?
wkuehnis is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 09:24 PM.