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Old 07-11-2020, 02:53 AM   #1
Brendan1959
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Default Model A motor tear down Covid lockdown

Hi
Just thought I would share some pics of my newly acquired model a motor tear down
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Old 07-11-2020, 02:58 AM   #2
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Default Re: Model A motor tear down Covid lockdown

Sticky valves can be helpful, gently tap the lifters to push the valves up and they stay there. Out comes the cam.
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Old 07-11-2020, 03:22 AM   #3
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Default Re: Model A motor tear down Covid lockdown

I am sure I have a valve guide removing tool. But I cant find it!!!
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Old 07-11-2020, 08:08 AM   #4
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Default Re: Model A motor tear down Covid lockdown



If your handy you can run up a side mount for the engine stand,pick up the water inlet and two bolt hole on the top of the pan rail..you can do clutch work,pull crankshaft and all your other work without taking it off the stand...nice roadster...fenders? who needs fenders?

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Old 07-11-2020, 08:14 AM   #5
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Default Re: Model A motor tear down Covid lockdown

'28 five bearing cam..slid into a later block..does it have a beaver tail crankshaft? the early '28 crankshaft throws look like a beaver tail. You going to hop it up?..oh and ditch that timing gear,those two piece ones will give you trouble..
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Old 07-11-2020, 06:56 PM   #6
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Default Re: Model A motor tear down Covid lockdown

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Current set up on the roadster 6/1 head down draft and extractors which take some careful building on a right hand drive
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Old 07-11-2020, 07:01 PM   #7
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Default Re: Model A motor tear down Covid lockdown

I didn't notice the early cam.
Picture of the crank, Beaver tail?
The cam gear is already failing, its a little loose.
I do have a 1/2 litre supercharger looking for a home.
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Old 07-11-2020, 09:39 PM   #8
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Default Re: Model A motor tear down Covid lockdown

The crank throw is flat instead of round..looks like a paddle..or a beavertail,hence the name..its a few pounds lighter than a later crank.
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Old 07-11-2020, 09:45 PM   #9
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Default Re: Model A motor tear down Covid lockdown

My junk is hopped up too
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Old 07-11-2020, 11:00 PM   #10
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Default Re: Model A motor tear down Covid lockdown

Quote:
Originally Posted by Brendan1959 View Post
I am sure I have a valve guide removing tool. But I cant find it!!!
You must have put it somewhere safe!
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Old 07-11-2020, 11:26 PM   #11
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Default Re: Model A motor tear down Covid lockdown

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Originally Posted by Synchro909 View Post
You must have put it somewhere safe!
I have looked in all the safe places, no luck, my normal procedure is to look and look, give up buy another use it then store it in a safe place right next to one I could not find.

I see your from Melbourne also.

Do you know of anywhere that pours and bores Babbitt?

Brendan
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Old 07-12-2020, 05:34 AM   #12
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Default Re: Model A motor tear down Covid lockdown

Brendan, if you're up for a drive, Norm McCullagh does all the babbit work around this part of the world (Warrnambool). They're getting harder to find.

https://www.nmengine.com/home


Cheers, Martin
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Old 07-12-2020, 10:32 AM   #13
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Default Re: Model A motor tear down Covid lockdown



Beaver tail crankshaft..this engine also had a smooth sided oil pan,screwed in dipper tray..
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Old 07-12-2020, 10:36 AM   #14
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Default Re: Model A motor tear down Covid lockdown



Later 28 to 31 crankshaft..The beaver tail is a shade lighter..
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Old 07-13-2020, 01:59 AM   #15
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Default Re: Model A motor tear down Covid lockdown

All valves out except 2, guides are not moving, any tips to get them out? I am trying not the cut the valves although i suspect I have bent them.
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Old 07-15-2020, 11:23 PM   #16
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Default Re: Model A motor tear down Covid lockdown

I got the head studs out, broke 2.
I used the TIG method to get them out, the first one came out on the second try.
The second one fought all the way, I nearly ran out of nuts to weld on.
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Old 07-16-2020, 05:55 AM   #17
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Default Re: Model A motor tear down Covid lockdown

Quote:
Originally Posted by Brendan1959 View Post
I have looked in all the safe places, no luck, my normal procedure is to look and look, give up buy another use it then store it in a safe place right next to one I could not find.

I see your from Melbourne also.

Do you know of anywhere that pours and bores Babbitt?

Brendan
Bill Eldridge does it and has been for decades. He is in Keysborough (near Dandenong).
If you're interested, I'll PM you his number.
PS roughly where in Melbourne. I'm 20 from the CBD to the NE.
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Old 07-17-2020, 06:39 PM   #18
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Default Re: Model A motor tear down Covid lockdown

Well its completely torn down, as I suspected I had to cut the last two valves to get them out.
Then spun up a drift to get the guides out.
Next job clean up the mess and have a look for cracks.
Any tips on finding cracks without special equipment?
Brendan
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Old 07-18-2020, 12:02 AM   #19
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Default Re: Model A motor tear down Covid lockdown



run up some block off plates and pressure test it..mandatory on later engines
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Old 08-20-2020, 08:45 PM   #20
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Default Re: Model A motor tear down Covid lockdown

Quote:
Originally Posted by Jack Shaft View Post


If your handy you can run up a side mount for the engine stand,pick up the water inlet and two bolt hole on the top of the pan rail..you can do clutch work,pull crankshaft and all your other work without taking it off the stand...nice roadster...fenders? who needs fenders?

I took your advice and adapted for a side mount
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