Valve seat crack

Topics Last Day Last Week Tree View    Getting Started Formatting Troubleshooting Program Credits    New Messages Keyword Search Contact Moderators Edit Profile Administration
Model T Ford Forum: Forum 2013: Valve seat crack
Top of pagePrevious messageNext messageBottom of page Link to this message  By Erich Bruckner, Vancouver, WA on Friday, August 30, 2013 - 05:32 pm:

Found this while cleaning up a 26 block. Crack from exhaust valve to number 3 cylinder. I searched the forum and found mostly answers from around 2009. So what is the current thinking on how to handle this?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jack Daron - Brownsburg IN on Friday, August 30, 2013 - 06:07 pm:

Pin it and sleave cylinder,and put new insert in valve.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ken Kopsky, Lytle TX on Friday, August 30, 2013 - 06:10 pm:

It needs drilled and pinned to stop propagation then the cylinder bored and sleeved and a new exhaust seat installed. Not something many can do in a home shop.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ken Kopsky, Lytle TX on Friday, August 30, 2013 - 06:16 pm:

Jack must have posted just as I started typing but what he says. I have one just like it. Probably a common feature on an overheated engine.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jack Daron - Brownsburg IN on Friday, August 30, 2013 - 06:26 pm:

Very common on the cheap 26-27 blocks.


Top of pagePrevious messageNext messageBottom of page Link to this message  By lorenzo leon on Friday, August 30, 2013 - 07:34 pm:

"cheap 26-27 blocks. "What do you mean by that ?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mike Bender Tulsa Oklahoma on Friday, August 30, 2013 - 08:30 pm:

Very common to find a crack at cylinder number 3 or 4 on the exhaust valve seat on 26/27's. Ken and Jack gave the right way to fix it. I see this on some early single cover engines but to date haven't found one that had two covers for the valve push rods. just saying.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jack Daron - Brownsburg IN on Friday, August 30, 2013 - 09:54 pm:

Lorenzo,the newer they are,the cheaper made they were.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Erich Bruckner, Vancouver, WA on Saturday, August 31, 2013 - 02:32 am:

Made cheaper as in thickness or alloy or both or .....


Top of pagePrevious messageNext messageBottom of page Link to this message  By Erich Bruckner, Vancouver, WA on Saturday, August 31, 2013 - 02:52 am:

Here is the rest of it....


Top of pagePrevious messageNext messageBottom of page Link to this message  By Kerry van Ekeren (Australia) on Saturday, August 31, 2013 - 03:42 am:

Cylinder re-sleeve, valve seat and crack repair, or, find another block!


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ted Dumas on Saturday, August 31, 2013 - 11:43 pm:

Depends on your budget and time frame. It was working when you tore it down. If cash and time are tight you can just reface the seat and valve and lap it in. This obviously is not the perfect answer but it will work.


Top of pagePrevious messageNext messageBottom of page Link to this message  By michael grady on Saturday, August 31, 2013 - 11:47 pm:

What does it mean to drill it and pin it?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ken Kopsky, Lytle TX on Sunday, September 01, 2013 - 12:35 am:

http://www.locknstitch.com/Metal_Stitching.htm


Top of pagePrevious messageNext messageBottom of page Link to this message  By michael grady on Sunday, September 01, 2013 - 03:20 pm:

thanks Ken...interesting


Posting is currently disabled in this topic. Contact your discussion moderator for more information.
Topics Last Day Last Week Tree View    Getting Started Formatting Troubleshooting Program Credits    New Messages Keyword Search Contact Moderators Edit Profile Administration