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Old 01-14-2014, 08:20 AM   #1
ifightfire
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Default Cleaning a Model A Engine block

I have my engine all taken apart. is it safe to send it to a machine shop and have it cooked or will this hurt the babit?
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Old 01-14-2014, 08:36 AM   #2
Kurt in NJ
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Default Re: Cleaning a Model A Engine block

most machine shop cleaning methods are not babbitt friendly
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Old 01-14-2014, 08:39 AM   #3
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Default Re: Cleaning a Model A Engine block

thats what i was afraid of . but im glad i asked.
i have a nother question. each of my pistons have cracks in the skirts all cracked in the same place. is that normal?
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Old 01-14-2014, 08:42 AM   #4
Keith True
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Default Re: Cleaning a Model A Engine block

Are they really cracked or do you have split skirt pistons?
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Old 01-14-2014, 10:06 AM   #5
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Default Re: Cleaning a Model A Engine block

im not sure. the splits all look exactly the same. this is the first time i have ever worked on something this old. im really hoping someone is going to say thats the way they are made.
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Old 01-14-2014, 10:11 AM   #6
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Default Re: Cleaning a Model A Engine block

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If the 'cracks' are vertical and look machined then they are split skirt and normal. But just to be sure can you post a pic?

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Old 01-14-2014, 10:19 AM   #7
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Default Re: Cleaning a Model A Engine block

yes they are and each one is exactly the same. i will take a pic tonite and post it. thank you for the help.i have so many questions about this engine my head is spinning. thank you for the help
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Old 01-14-2014, 10:57 AM   #8
Tom Wesenberg
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Default Re: Cleaning a Model A Engine block

I use gas and a stiff parts cleaning brush to clean the inside of an engine. If you buy your parts cleaning brushes at H/F check them first because the last batch I saw were all soft as a limp paint brush.
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Old 01-14-2014, 01:31 PM   #9
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Default Re: Cleaning a Model A Engine block

i have a parts washer for the small parts but i was thinking about the block till i realized the babit may not fare well in a cooker
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Old 01-14-2014, 02:02 PM   #10
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Default Re: Cleaning a Model A Engine block

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Originally Posted by 1930 coupe View Post
...Check your gas stations and find one that sells STODDARD SOLVENT out of a pump. It does not burn at room temperature and is made for parts washers. Find a five gallon bucket with a lid and put 3 or 4 gallons of solvent in it. put your small parts in the bucket and use a brush on the large parts.
I bought a 5-gallon bucket of Stoddard Solvent from NAPA when I first got my Model A 4-years ago. Still using off of it.

Another good place to buy it is at any of your aircraft supply houses.
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Old 01-14-2014, 02:18 PM   #11
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Default Re: Cleaning a Model A Engine block

If you have rusty water jackets (and who doesn't?) you can plug your outlets and pour in Evaporust. I've heard that letting that sit for a week or two will completely dissolve your rust, though I haven't done that (yet).
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Last edited by 700rpm; 01-14-2014 at 09:49 PM. Reason: Spelling correction
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Old 01-14-2014, 02:21 PM   #12
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Default Re: Cleaning a Model A Engine block

I put the bare block on my engine stand, up side down with a tray under it. I use a long small straight head screw driver and dig around in the water jacket to remove crud and dirt that has collected over the years. It will take a while but the finished product will run cooler and be worth the trouble. You can see the results in the tray as you work. Gunk engine cleaner mixed with kerosene works good to remove loose crud and oily residue. I usually then take the block and parts to the car wash for a good going over. You can't get it too clean, take your time.
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Old 01-14-2014, 02:23 PM   #13
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Default Re: Cleaning a Model A Engine block

Here in New Zealand we use Washworld to clean our engine blocks etc.
These are automated car cleaning businesses.
You feed the dollars in and various detergents are available and hot water.
This will clean a block pretty thoroughly and the high pressure can be used for oil passages.
I guess you wouldn't want to turn up with a truly filthy engine, but there's no supervision and the places are set up to catch all the crap.
Four wheel drivers use them after a day of waddling in the mud!
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Old 01-14-2014, 02:24 PM   #14
48fordnut
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Default Re: Cleaning a Model A Engine block

I use a scrapper and cheap 2.25 oven cleaner from family dollar/dollar general .Then i use diesel fuel and a brush. Finally a pressure washer.
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Old 01-14-2014, 03:41 PM   #15
Kevin in NJ
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Default Re: Cleaning a Model A Engine block

You can clean the water jacket with pointy things and wires.

Work at it for a while and get all the scale off the walls as that will insulate the heat transfer to the water.

I worked for a while. I flipped the block upside down to help get rid of the junk as well as (after the big stuff came out) blowing and vacuuming. A stiff wire is use to get around the corners.

You will be amazed at how much will come out of the water jacket.
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Old 01-14-2014, 04:33 PM   #16
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Default Re: Cleaning a Model A Engine block

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Originally Posted by ifightfire View Post
I have my engine all taken apart. is it safe to send it to a machine shop and have it cooked or will this hurt the babit?
Google...'evaporust'. Instead of 'cooking it'...which can be expensive and harm Babbitt...., plug the water INLET and fill block to deck. Do as instructed via product and you may be amazed, as no damage to anything except rust. Oh, and next great thing ..to making rust free, you can REUSE the stuff over/over...as opposed to one time use, etc. Good luck
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Old 01-14-2014, 04:47 PM   #17
Purdy Swoft
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Default Re: Cleaning a Model A Engine block

Quote:
Originally Posted by wensum View Post
Here in New Zealand we use Washworld to clean our engine blocks etc.
These are automated car cleaning businesses.
You feed the dollars in and various detergents are available and hot water.
This will clean a block pretty thoroughly and the high pressure can be used for oil passages.
I guess you wouldn't want to turn up with a truly filthy engine, but there's no supervision and the places are set up to catch all the crap.
Four wheel drivers use them after a day of waddling in the mud!

Thats the kind that I use.
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Old 01-14-2014, 05:20 PM   #18
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Default Re: Cleaning a Model A Engine block

What about putting the block in a tank of mollases and water and then sealing it for a month or so? I have never tried it but have read that it will clean a motor well.
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Old 01-14-2014, 06:04 PM   #19
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Default Re: Cleaning a Model A Engine block

And when you take the block out, have a pancake breakfast!
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Old 01-14-2014, 09:22 PM   #20
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Default Re: Cleaning a Model A Engine block

Here is a picture of my pistons. Are the cracks normal?
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File Type: jpg pistons.jpg (46.5 KB, 49 views)
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