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 03-28-2018, 08:57 PM   #61
Railcarmover
Senior Member
 
Railcarmover's Avatar
 
Join Date: Apr 2017
Location: Sacramento
Posts: 560
Default Re: Chasing the knock.

camshaft endplay isnt important,its held in place by that spring and plunger you were asking about earlier..tell us how much crankshaft endplay you have..
Railcarmover is offline   Reply With Quote
Old 03-28-2018, 10:15 PM   #62
Bulligen
Senior Member
 
Join Date: Nov 2012
Location: Elgin Illinois
Posts: 547
Default Re: Chasing the knock.

Just so you know, the X on the plunger is to keep the oil lubricating it.
Bulligen is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 03-29-2018, 08:50 AM   #63
katy
Senior Member
 
katy's Avatar
 
Join Date: Jun 2015
Location: Alberta, Canada
Posts: 1,322
Default Re: Chasing the knock.

I would either replace that plunger or face it off and recut the grooves.
__________________
Talk slow, think fast.
katy is offline   Reply With Quote
Old 03-30-2018, 06:40 AM   #64
cederholm
Member
 
cederholm's Avatar
 
Join Date: Jun 2017
Location: Brooklyn NYC
Posts: 80
Default Re: Chasing the knock.

I'm new here and am only now looking to buy my first A but I had a knock in on off-topic '53 Stovebolt 6. I spent a year chasing that thing an this was after a full rebuild of the motor (done by me). I and everyone who listened said the noise was at the back of the block. It wasn't until I invested $5 at Harbor Freight for a motor stethoscope that I found the issue. It was a loose dampener on the lower pulley slamming into the crank and sending the sound along the whole crank.

Anyway, it looks like you're on the right track but if not pick up one of those stethoscopes and listed to EVERYTHING.

That and I agree with others your car is beautiful - I'd refresh that motor in a second!

~ Carl
cederholm is offline   Reply With Quote
Old 03-30-2018, 08:17 AM   #65
Railcarmover
Senior Member
 
Railcarmover's Avatar
 
Join Date: Apr 2017
Location: Sacramento
Posts: 560
Default Re: Chasing the knock.

The model a engine requires periodic maintenance to maintain optimum performance.If the engine still has babbit rod and main bearings one should check the bearing oil clearance,and remove shims if necessary.When chasing a knock this step is vital,not only for longevity of the engine but proper diagnosis,an over spec rod or main clearance is one of the main reasons for a knock.
So many neglect this basic maintenance item with catastrophic results,bearing failure leads to expensive engine overhauls. A hobbyist with basic skills and attention to detail can perform this task,and should every time the oil pan is off.To back up this repair on an engine in this condition,light honing the cylinders and replacing rings along with hand lapping the valves insures proper performance.
Railcarmover is offline   Reply With Quote
Old 04-02-2018, 04:28 PM   #66
Garagekulture13
Senior Member
 
Garagekulture13's Avatar
 
Join Date: Nov 2015
Location: Tennessee
Posts: 110
Default Re: Chasing the knock.

I'm still pecking away at it. Trying to clean and paint what I can get to at this point. Also I realize my oil pump holder device is crude at best but it worked in a pinch. I will keep everyone up to date on my progress. Thanks to all for the help thus far.

Sent from my SM-N950U using Tapatalk
Garagekulture13 is offline   Reply With Quote
Old 04-03-2018, 01:41 PM   #67
WHN
Senior Member
 
Join Date: Mar 2017
Location: Old Lyme Connecticut
Posts: 627
Default Re: Chasing the knock.

I can’t believe how much you have gotten done in such a short time.

Please tell us how it runs when you get it back together.

Looks great.
WHN is offline   Reply With Quote
Old 04-03-2018, 02:34 PM   #68
Bob C
Senior Member
 
Join Date: May 2010
Location: So Cal
Posts: 5,488
Default Re: Chasing the knock.

Looks good. I don't see a cotter pin in the fan nut, if that's an original fan
now would be a good time to throw it in the trash.

Bob
Attached Images
File Type: jpg DCP_0565.jpg (43.0 KB, 23 views)
Bob C is offline   Reply With Quote
Old 04-03-2018, 11:09 PM   #69
Bulligen
Senior Member
 
Join Date: Nov 2012
Location: Elgin Illinois
Posts: 547
Default Re: Chasing the knock.

Yes Sir look out for the fan. We had one blade fly off in a 52 ford truck, as we headed down the highway. Thought someone shot at us. The blade almost went through the hood!
Bulligen is offline   Reply With Quote
Old 04-03-2018, 11:12 PM   #70
Bulligen
Senior Member
 
Join Date: Nov 2012
Location: Elgin Illinois
Posts: 547
Default Re: Chasing the knock.

I meant to add that you are doing a very nice job. And the best way is to do it yourself. Now you will be able to help out a fellow Model A person when the question comes up!
Bulligen is offline   Reply With Quote
Old 04-05-2018, 09:39 AM   #71
Garagekulture13
Senior Member
 
Garagekulture13's Avatar
 
Join Date: Nov 2015
Location: Tennessee
Posts: 110
Default Re: Chasing the knock.

Quote:
Originally Posted by Bob C View Post
Looks good. I don't see a cotter pin in the fan nut, if that's an original fan
now would be a good time to throw it in the trash.

Bob
I just saw this post after I got the radiator back in and the wiring done. You are correct there is no cotter pin and the nut is not down far enough to get one in.

Sent from my SM-N950U using Tapatalk
Garagekulture13 is offline   Reply With Quote
Old 04-05-2018, 09:42 AM   #72
Garagekulture13
Senior Member
 
Garagekulture13's Avatar
 
Join Date: Nov 2015
Location: Tennessee
Posts: 110
Default Re: Chasing the knock.

Is the throttle linkage supposed to be curved like this or is it supposed to be flat? Straight up? I'm referring to the "U" shaped bracket that bolts to the back of the motor.

Sent from my SM-N950U using Tapatalk
Garagekulture13 is offline   Reply With Quote
Old 04-05-2018, 10:45 AM   #73
Bob C
Senior Member
 
Join Date: May 2010
Location: So Cal
Posts: 5,488
Default Re: Chasing the knock.

Looks like some one put a washer between the nut and fan, that is probably
why you can't get the cotter pin in. The throttle control should be straight,
they get bent when you jack the front of the engine up without removing them first.

Bob

Last edited by Bob C; 04-06-2018 at 09:23 PM. Reason: Bad info, Tom is right.
Bob C is offline   Reply With Quote
Old 04-05-2018, 06:13 PM   #74
Tom Wesenberg
Senior Member
 
Tom Wesenberg's Avatar
 
Join Date: May 2010
Location: Mpls, MN
Posts: 26,739
Default Re: Chasing the knock.

The throttle linkage bracket is correct as pictured. It curves forward for proper clearance. It has two holes that need to be oiled also, besides oiling the bellcrank.
Tom Wesenberg is offline   Reply With Quote
Old 04-05-2018, 09:16 PM   #75
Garagekulture13
Senior Member
 
Garagekulture13's Avatar
 
Join Date: Nov 2015
Location: Tennessee
Posts: 110
Default Re: Chasing the knock.

Ok. I bent it back as I was first told it was supposed to be straight. Once I did this it now is hitting the body. So is it supposed to be bent or straight? I thought I had gone to far but now after the 2nd comment believe maybe it was correct to begin with. Any help??

Sent from my SM-N950U using Tapatalk
Garagekulture13 is offline   Reply With Quote
Old 04-05-2018, 11:27 PM   #76
Tom Wesenberg
Senior Member
 
Tom Wesenberg's Avatar
 
Join Date: May 2010
Location: Mpls, MN
Posts: 26,739
Default Re: Chasing the knock.

Any help?


Yes, I posted the help already.
Tom Wesenberg is offline   Reply With Quote
Old 04-05-2018, 11:42 PM   #77
Garagekulture13
Senior Member
 
Garagekulture13's Avatar
 
Join Date: Nov 2015
Location: Tennessee
Posts: 110
Default Re: Chasing the knock.

Quote:
Originally Posted by Tom Wesenberg View Post
Any help?


Yes, I posted the help already.
Thank you sir. I will try and bend it back in the morning.

Sent from my SM-N950U using Tapatalk
Garagekulture13 is offline   Reply With Quote
Old 04-05-2018, 11:54 PM   #78
Tom Wesenberg
Senior Member
 
Tom Wesenberg's Avatar
 
Join Date: May 2010
Location: Mpls, MN
Posts: 26,739
Default Re: Chasing the knock.

Reply #9 in this thread shows my 1928 linkage is close to the block, as it should be.


https://www.fordbarn.com/forum/showt...e+pictures+Tom
Tom Wesenberg is offline   Reply With Quote
Old 04-06-2018, 11:12 AM   #79
Garagekulture13
Senior Member
 
Garagekulture13's Avatar
 
Join Date: Nov 2015
Location: Tennessee
Posts: 110
Default Re: Chasing the knock.

The good news the car is back together. The bad news is it won't hit. Assumably it's something to do with timing. I checked the timing with the pin in, piston TDC, and the rotor button at the correct spot.

Sent from my SM-N950U using Tapatalk
Garagekulture13 is offline   Reply With Quote
Old 04-06-2018, 12:25 PM   #80
100IH
Senior Member
 
Join Date: Dec 2011
Location: SW Idaho
Posts: 632
Default Re: Chasing the knock.

Throttle linkage trick, Pick up a bunch at swap meets. Even if they are bent up. What's bent on one might be straight elsewhere. Almost all will need massaging and there are about 6 variants over the 4 years of production. Fortunately they are usually cheap and don't take much space on the shelf.
100IH 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 12:05 AM.