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 11-21-2017, 07:32 PM   #1
pinball73
Junior Member
 
Join Date: Nov 2017
Location: North mo.
Posts: 24
Default Noise in my new 29 a engin

ok guys I am new at this, but hear we go! I have done a complete rebuild of my 1929 ford model a engine! it runs great sounds real good until I get it warmed up & on the highway in third gear at what I am going to call a cruse, 35 mph or so. not giving it any gas & not letting off of it either! I get a noise I don't like & don't think is normal! at this point I can retard the spark lever & it almost goes away! can't think it is spark knock ! it sounds too much like something mechanical! tried removing the plug wires one at a time & it makes no difference in the sound of the engine, so don't think it is rod,main, or piston! it has been bored 100 over new pistons, rings & valves have been re done. Babbitt is good & crank has been replaced. oil pressure is good, I would like more, but that is what they say it should have, thought pistons might be touching the head, so I scoped the cylinders & find no evidence of this happening! this thing has me barking at the moon! has any body got any ideas? I need help
Attached Images
File Type: jpg FINISHED - FIRST DRIVE 007.jpg (130.9 KB, 22 views)

Last edited by pinball73; 11-22-2017 at 12:47 PM. Reason: topick error
pinball73 is offline   Reply With Quote
Old 11-21-2017, 08:03 PM   #2
1crosscut
Senior Member
 
1crosscut's Avatar
 
Join Date: Feb 2011
Location: Lincoln, Nebraska
Posts: 992
Default Re: Noise in my ney 29 a engin

Can you only hear the noise while in 3rd gear and going down the road after warm up or does it continue to make the noise while stopped after it is warmed up?
If the noise persists while stopped have you tried listening to the motor with a mechanics stethoscope to narrow the location down?
__________________
Dave

It'll feel better when it quits hurting.
1crosscut is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 11-21-2017, 08:15 PM   #3
Kurt in NJ
Senior Member
 
Kurt in NJ's Avatar
 
Join Date: May 2010
Location: on the Littlefield
Posts: 3,988
Default Re: Noise in my ney 29 a engin

How new is the engine, is it stock, or modified, retarding the spark is a way to quiet a loose bearing, did it always have the noise, or is it new and getting louder
louder cold or after hot?
Kurt in NJ is offline   Reply With Quote
Old 11-21-2017, 08:31 PM   #4
1930-Pickup
Senior Member
 
1930-Pickup's Avatar
 
Join Date: Mar 2017
Location: Huntington Beach, CA
Posts: 235
Default Re: Noise in my ney 29 a engin

Now you've done it! Welcome to the Barn!
__________________
Vintage Everyday...
1930-Pickup is offline   Reply With Quote
Old 11-21-2017, 08:40 PM   #5
Big hammer
Senior Member
 
Join Date: Jun 2014
Location: Land of Lincoln
Posts: 1,600
Default Re: Noise in my ney 29 a engin

Quote:
Originally Posted by 1930-Pickup View Post
Now you've done it! Welcome to the Barn!
X-2 wecome! It would help to know you location as someone could listen and guide you on the noise! Clubs in your area would be helpful also.
__________________
Don't force it with a little hammer tap, tap, tap
get a bigger hammer tap done
Big hammer is offline   Reply With Quote
Old 11-21-2017, 08:49 PM   #6
Jacksonlll
Senior Member
 
Jacksonlll's Avatar
 
Join Date: Jul 2012
Location: Michigan-- Member of Oakleaf of MARC
Posts: 782
Send a message via ICQ to Jacksonlll
Default Re: Noise in my ney 29 a engin

It's really easy to forget to put in the plunger and spring in the timing gear cover.
Jacksonlll is offline   Reply With Quote
Old 11-21-2017, 09:17 PM   #7
Bob C
Senior Member
 
Join Date: May 2010
Location: So Cal
Posts: 5,044
Default Re: Noise in my ney 29 a engin

When you are running at 35mph where is the spark lever set?

Bob
Bob C is offline   Reply With Quote
Old 11-21-2017, 09:18 PM   #8
pinball73
Junior Member
 
Join Date: Nov 2017
Location: North mo.
Posts: 24
Default Re: Noise in my ney 29 a engin

it is the loudest in 3 rd gear on the cruse! it will do it after it is warm at idle but not as bad! it gets quitter even at idle when you retard the timing
pinball73 is offline   Reply With Quote
Old 11-21-2017, 09:21 PM   #9
pinball73
Junior Member
 
Join Date: Nov 2017
Location: North mo.
Posts: 24
Default Re: Noise in my ney 29 a engin

I typically run it at full advance when at road speed, but when you retard the advance the noise quiets down, almost gone
pinball73 is offline   Reply With Quote
Old 11-21-2017, 09:24 PM   #10
pinball73
Junior Member
 
Join Date: Nov 2017
Location: North mo.
Posts: 24
Default Re: Noise in my ney 29 a engin

I put a new plunger & spring in to keep pressure on the cam!
pinball73 is offline   Reply With Quote
Old 11-21-2017, 09:29 PM   #11
BILL WILLIAMSON
Senior Member
 
BILL WILLIAMSON's Avatar
 
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 11,268
Default Re: Noise in my ney 29 a engin

"Possibly" loose flywheel bolts?
Pop off the starter & with a screwdriver in the flywheel teeth, see if it rotates back & forth an 1/8" or so.
Bill W.
__________________
"THE ASSISTANT GURU OF STUFF"
BILL WILLIAMSON is offline   Reply With Quote
Old 11-21-2017, 09:33 PM   #12
pinball73
Junior Member
 
Join Date: Nov 2017
Location: North mo.
Posts: 24
Default Re: Noise in my ney 29 a engin

maybe 100 miles! it is stock other than being bored 100 over, plastic gaged all the bearings & they run from 1.5 too 2 ish, Babbitt is in real good condition. as I Sayed earlier, removing the plug wires one at a time makes no change in the sound of the engine. if it was a rod or piston I think it would show up on removing plug wires one at a time!
pinball73 is offline   Reply With Quote
Old 11-21-2017, 09:37 PM   #13
pooch
Senior Member
 
pooch's Avatar
 
Join Date: Sep 2010
Location: South Coast NSW Australia
Posts: 2,326
Default Re: Noise in my ney 29 a engin

Get on a slight incline so the engine has to work in 3rd gear.

Retard spark lever until you feel a loss in power.

Advance it slightly, this is where you should be running at on the flat.

All you do with over advance is pound the babbit out.

The full window of advance is 40 degrees, dunno why Henry put that much in fer....

The engine sure don't like all of it.
pooch is offline   Reply With Quote
Old 11-21-2017, 09:40 PM   #14
pinball73
Junior Member
 
Join Date: Nov 2017
Location: North mo.
Posts: 24
Default Re: Noise in my ney 29 a engin

Bill I thought of that but I tightened them my self & put the safety wire in my self. I will look at this again because I am planning to remove the transmission & replace all the bearings & stop it from dripping oil this winter. this thing is about to get the best of me!
pinball73 is offline   Reply With Quote
Old 11-21-2017, 09:42 PM   #15
Kohnke Rebabbitting
Senior Member
 
Join Date: May 2010
Location: 60615,330th Ave.,Clare, Iowa, 50524
Posts: 1,188
Default Re: Noise in my ney 29 a engin

Did you check rods for twist, Bend, and Off Set?

How much does the wrist pins have, for clearance.

Herm.
Kohnke Rebabbitting is offline   Reply With Quote
Old 11-21-2017, 09:53 PM   #16
denniskliesen
Senior Member
 
denniskliesen's Avatar
 
Join Date: Nov 2016
Location: SoCal
Posts: 434
Default Re: Noise in my ney 29 a engin

Did you check the end play on your crankshaft? Did you check the backlash on your cam gear? Check the backlash on your rotor when the distributor is in the hole? What about the intermediate shaft between the oil pump drive and the distributor? Distributor shaft and sleeve? Check for wear in those areas. Take pictures.
denniskliesen is offline   Reply With Quote
Old 11-21-2017, 09:55 PM   #17
pinball73
Junior Member
 
Join Date: Nov 2017
Location: North mo.
Posts: 24
Default Re: Noise in my ney 29 a engin

Pooch I will try that! what is the general thought on the automatic timing device that just does away with the spark control lever! timing is adjusted in accordance with engine rpm
pinball73 is offline   Reply With Quote
Old 11-21-2017, 09:58 PM   #18
denniskliesen
Senior Member
 
denniskliesen's Avatar
 
Join Date: Nov 2016
Location: SoCal
Posts: 434
Default Re: Noise in my ney 29 a engin

Quote:
Originally Posted by pinball73 View Post
Pooch I will try that! what is the general thought on the automatic timing device that just does away with the spark control lever! timing is adjusted in accordance with engine rpm
They seem to have good results with a stock low compression head, have heard it does not work that well with a high compression head. You shouldn't ever need to go full advance on your spark lever.
denniskliesen is offline   Reply With Quote
Old 11-21-2017, 10:04 PM   #19
pinball73
Junior Member
 
Join Date: Nov 2017
Location: North mo.
Posts: 24
Default Re: Noise in my ney 29 a engin

Kohnke did not check for twisted or bent rod, generally they all looked the same, laid out flat, but that is about as far as I went there. as for wrist pin clearance, the machine shop took care of all that I presume when they put in the new wrist pin bushings, they are supposed to be good & I trust them!
pinball73 is offline   Reply With Quote
Old 11-21-2017, 10:09 PM   #20
pinball73
Junior Member
 
Join Date: Nov 2017
Location: North mo.
Posts: 24
Default Re: Noise in my ney 29 a engin

denniskliesen! they are a bit pricy but I was wondering if it would be worth the investment? I am running pretty much stock
pinball73 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 10:10 AM.