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10-07-2012, 05:51 AM | #1 |
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Banger tapping noise at idle...
I have an intermittant loud metallic type tapping noise from my B model banger mill, tap, tap, tap,......tap,.......tap.
The noise only appears to happen at idle and is not always there, seems to be coming from the timing gear area of the motor. I've taken the timing cover off and run the banger for a short time, the noise is definately coming from the front of the mill, although the aluminium timing gears looks okay. Anyone got any ideas of what it could be? Gomez. |
10-07-2012, 08:54 AM | #2 |
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Re: Banger tapping noise at idle...
Banger = hopped up
Mill= motor Lol = laughing out loud Last edited by Mitch//pa; 10-07-2012 at 01:49 PM. |
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10-07-2012, 10:42 AM | #3 | |
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Re: Banger tapping noise at idle...
Quote:
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Cowtown A's |
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10-07-2012, 10:58 AM | #4 |
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Re: Banger tapping noise at idle...
Sounds like a loose shock support.
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10-07-2012, 11:50 AM | #5 |
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Re: Banger tapping noise at idle...
wonder if it might be the bearing surfae of the cam loose in the block, or perhaps a lifter telegraphing the noise into where you hear it by the cam gear?
you could remove the cam gear and check the front of the cam for play.. good luck.. - Dave |
10-07-2012, 02:09 PM | #6 |
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Re: Banger tapping noise at idle...
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10-07-2012, 03:25 PM | #7 |
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Re: Banger tapping noise at idle...
Try running the engine with the timing pin removed and a bolt screwed in to touch the timing gear,then start the engine and just screw it in a little bit more,This will stop most noises from the gear,
then you will know if it is the gear. then replace it. Put the timing pin back after though. Lawrie |
10-07-2012, 04:24 PM | #8 |
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Re: Banger tapping noise at idle...
Where I'm from,
Banger = Gang member who has committed violent crime. Mill = Where dad worked. LOL = When the action has temporarily ceased. |
10-07-2012, 04:58 PM | #9 |
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Re: Banger tapping noise at idle...
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10-07-2012, 05:11 PM | #10 |
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Re: Banger tapping noise at idle...
Jim B mentioned lifter bores, ...and I agree.
One thing I have always wondered is why someone does not offer an oversize tappet manufactured specifically for the Model-A/B engine. One might think there is not a need, but they actually manufacture them for the Model-T engine in 'standard' bore size ...and also in .015" and .030" oversize. I have them in two of my T engines that make the engine much quieter. |
10-07-2012, 05:54 PM | #11 | |
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Re: Banger tapping noise at idle...
Egge Machine has them listed in their catalog, standard and .015 oversize.
VL800 MODEL A ADJ LIFTER SET OF 8 $85.00 .000 .015 VL800.015 ADJUSTABLE VALVE LIFTER SET .015 OVER $77.10 They list Model B too but do not remember if the B lifter heels measure the correct .070 larger than the Model A. http://www.egge.com/site/?d=48&dt=1&...ke=FORD&rpp=10 Quote:
Last edited by Benson; 10-07-2012 at 06:11 PM. |
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10-07-2012, 08:31 PM | #12 |
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Re: Banger tapping noise at idle...
fordgarage, the much loved ford flathead 4 cylinder engine has been referred to as a 'banger' since the model T rolled out of Detroit back in 1908.
Similarly, the combusion engine has been referred to as a 'mill' since we began to burn gas and turn wheels. These are not just terms 'Hot Rodders' use, they are endearing terms which have been used forever and ever. Referring to people that use these those terms as yo-yos reflects poorly on your good self. Now lets please get back to why we are here, and that is to provide much needed tech support for what we love most of all, early Fords! Gomez. |
10-07-2012, 08:37 PM | #13 |
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Re: Banger tapping noise at idle...
Snyders also has the oversize lifters.
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10-07-2012, 08:53 PM | #14 |
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Re: Banger tapping noise at idle...
Interesting. Just to satisfy my curiosity I did a site search and came up with 11 pages with the reference to "banger".
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10-08-2012, 02:36 AM | #15 |
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Re: Banger tapping noise at idle...
i will watch this thread because i want to track knocking noises in engines but... You have to understand that professionals are good to listen to when talking about engines but their opinion of other people are often less important, hard to take them seriously when they think everyone has a lathe & milling machine in their bedroom.
While working on a fuel delivery issue on a survivor car that had only ever had a valve grind and oil pan cleaning a top notch engine builder who happened to be nearby told me i installed the camshaft 90 degrees out when i had rebuilt the engine. Really? i can rebuild engines in my sleep and not even notice? Cool i never knew that, what an awesome skill. Explained to him twice it had never been rebuild but did he listen? No... because he knows everything. |
10-08-2012, 05:20 AM | #16 |
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Re: Banger tapping noise at idle...
Yes in .005 and .015. I probably should have made myself a little clearer about the desire for .030 with the larger heal. Thank you for mentioning though.
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10-08-2012, 08:33 AM | #17 |
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Re: Banger tapping noise at idle...
I had a similar problem with my engine. It turned out that the single nut adjustable lifter had moved. It is my understanding that there has been a problem with these becoming loose.
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10-08-2012, 11:08 AM | #18 |
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Re: Banger tapping noise at idle...
Yes Vince,
Thunder Road, saw that movie at the drive-in in my first Model A. P.S. The admission to the movie was more than the cost of the car. |
10-09-2012, 09:23 PM | #19 |
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Re: Banger tapping noise at idle...
Ive found that the lifter bores are more likely to be worn in a B as the lifter gallery is not flooded with oil like it is in an A.
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10-19-2012, 06:49 PM | #20 |
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Re: Banger tapping noise at idle...
A quick update: It looks like the aluminium cam gear has a little clearance (as it should) with the helical teeth of the crank gear. But the movement of the cam gear can be moved with just one finger meaning that it does not turn the camshaft as well. I would imagine to move the cam gear that is bolted tightly to the camshaft would require more effort.
I still haven't removed the cam gear yet, but am now expecting the cam to flop around a bit on the camshaft even though the cam gear nut is tight. There is however no horivontal movement of the gear (left to right). Is this a common issue? I have no real experience, but would this mean the two locating pins that locate the cam gear on the camshaft be worn? Or the cam gear locating pin holes be worn? |
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