Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 06-20-2011, 12:09 PM   #1
grizz
Junior Member
 
Join Date: May 2010
Posts: 20
Default engine noise discovered?

51 with the flathead six has a metallic knock when winding the engine thru the
gears. Cant hear it at idle or low speeds. I pulled the engine to find the cause
and after removing the starter i found the bendix spring was broken. I hate to
fix the starter and reinstall the engine and still have the noise, but also dont want to disassemble the engine needlessly. Would this make this type of noise
and does anyone have first hand experience? thanks
grizz is offline   Reply With Quote
Old 06-20-2011, 02:17 PM   #2
ford1
Senior Member
 
Join Date: May 2010
Location: oroville ca.
Posts: 1,555
Default Re: engine noise discovered?

a broken bendix can cause all kinds of strange noises as it is bounced back and forth between the flywheel and starter, if the engine is out pull the pan, thats easy, and check the condition of the rod bearings, and main bearings, if a lot of miles on the engine now would be the time to replace them, just my oppion
ford1 is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 06-20-2011, 02:38 PM   #3
Mart
Senior Member
 
Mart's Avatar
 
Join Date: May 2010
Location: Solihull, England.
Posts: 5,597
Default Re: engine noise discovered?

I'm thinking the noise would be lighter and higher frequency than a metallic knock. Look at the ring gear teeth - do they look like they have been contacting the broken spring or bendix?
Look for evidence on the spring for contact - it should be all shiny and knocked about if contact has been made - if old/crusty/rusty/dirty it is not the source of the noise.

Mart.
Mart is offline   Reply With Quote
Old 06-20-2011, 03:22 PM   #4
Mike51Merc
Senior Member
 
Mike51Merc's Avatar
 
Join Date: May 2010
Location: Northeast Pennsylvania
Posts: 1,555
Default Re: engine noise discovered?

If it was me, I'd see if I could beg/borrow/steal and engine test stand.
Mike51Merc is offline   Reply With Quote
Old 06-20-2011, 07:19 PM   #5
Jack 34pu
Senior Member
 
Jack 34pu's Avatar
 
Join Date: May 2010
Location: State College, PA
Posts: 361
Default Re: engine noise discovered?

I had a slight deep sounding knock in an engine with low miles a few years back. It started at 50 mph and the more I drove it, the knock came in at lower speeds. One day I decided to pull the motor and check it out. It was a floating rod bearing that had split at the oil groove and the chips caused some mid damage to the bearing and crank journal.
Jack 34pu 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 10:49 PM.