|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
01-26-2020, 07:26 PM | #1 |
Senior Member
Join Date: Aug 2016
Location: West Virginia
Posts: 430
|
Engine disassembly; Uh Oh.
Beginning engine assessment this afternoon. Valve stems show no appreciable wear, .311 so far. Found one valve scored in seat area. Checked crank end play. Measured almost .015, about twice maximum tolerance.
Rod babbit looked fair but journals on crank had some pitting. Pistons .060 with #2 and #3 sleeved. Some scoring in cylinders. And...... |
01-26-2020, 07:34 PM | #2 |
Senior Member
Join Date: May 2010
Location: Clinton,WA/Whidbey Island
Posts: 4,088
|
Re: Engine disassembly; Uh Oh.
oh my! may have to go for a rebuild!
__________________
www.whidbeymodelaclub.com |
Sponsored Links (Register now to hide all advertisements) |
|
01-26-2020, 08:56 PM | #3 |
Senior Member
Join Date: May 2010
Location: St Charles , Missouri
Posts: 1,994
|
Re: Engine disassembly; Uh Oh.
Look for a replacement block. That is a frost crack That Will probably come back to haunt you and in my opinion with as many blocks there are out there I would choose another and restamp to match your frame and title .
Larry |
01-26-2020, 09:31 PM | #4 |
Senior Member
Join Date: Jun 2014
Location: Melbourne, Australia
Posts: 7,471
|
Re: Engine disassembly; Uh Oh.
Where I am, a frozen block is unheard of but intuition tells me to vee out the crack and fill it with either a good silicone or an epoxy putty. Make sure the surfaces are clean.
The Model A cooling system is not pressurised so there is no pressure in the repair. I'd use silicone because it stays flexible and won't be bothered by any movement in the block caused by heating and cooling, minute as they would be.
__________________
I'm part of the only ever generation with an analogue childhood and a digital adulthood. |
01-26-2020, 09:53 PM | #5 |
Senior Member
Join Date: May 2010
Location: Englewood, Colorado
Posts: 1,372
|
Re: Engine disassembly; Uh Oh.
The only permanent fix is to solder it.
|
01-26-2020, 10:52 PM | #6 |
Senior Member
Join Date: May 2010
Posts: 1,304
|
Re: Engine disassembly; Uh Oh.
Sponsored Links (Register now to hide all advertisements)
John in Newhall California a siopover en route to Chandler AZ from the Turlock swapmeet . |
01-26-2020, 10:53 PM | #7 |
Senior Member
Join Date: May 2010
Location: PASADENA, CA
Posts: 1,881
|
Re: Engine disassembly; Uh Oh.
I have had good experience pinning a crack of this type.
I am not sure you can get things clean enough to solder it. Chris W. |
01-27-2020, 07:41 AM | #8 |
Senior Member
Join Date: Aug 2016
Location: West Virginia
Posts: 430
|
Re: Engine disassembly; Uh Oh.
If it were a running engine in a vehicle I would venture going with it, but since It is disassembled and needing machine work I might try to find a better block before spending a lot of $$$ on this one. I wan't a dependable driver. It is an AA and I plan to work it some.
|
01-27-2020, 07:46 AM | #9 |
Senior Member
Join Date: Aug 2016
Location: West Virginia
Posts: 430
|
Re: Engine disassembly; Uh Oh.
[QUOTE=john charlton;1845667]This is a typical freeze crack it is unlikely to spread probably been like that for years . The crack most likely has self sealed by rust .
I did find it odd that there was no sign of weeping or stains around the crack over the old silver paint on the block. We used to use black pepper as stop leak, worked better than the commercial preparations, learned it from loggers in the mountains. |
01-27-2020, 08:00 AM | #10 |
Senior Member
Join Date: May 2010
Location: Lakeland, MN
Posts: 310
|
Re: Engine disassembly; Uh Oh.
[QUOTE=David R. We used to use black pepper as stop leak, worked better than the commercial preparations, learned it from loggers in the mountains.[/QUOTE]
I have used black pepper in a Model T and it lasted several years and I sold it with full disclosure no problem. I have also used soapstone to solve a slight freeze crack.
__________________
Jeff P./MN 1913 Model T Runabout 1926 Model T Sport Touring 1948 Chrysler New Yorker |
Thread Tools | |
Display Modes | |
|
|
Sponsored Links (Register now to hide all advertisements) |
|