Valve Lash - Reground Cam

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 Lash - Reground Cam
Top of pagePrevious messageNext messageBottom of page Link to this message  By Tom Smith on Thursday, August 22, 2013 - 01:03 pm:

I am looking to see, on a Stock Cam that has been reground to 250 Lift in a '24 Coupe. What is a good setting for the Valve Lash? I try to search this but see a range of settings. Only mods are,
- High-Vol. Intake with Kingston L4
- "Z" Head
- SS Valves with ADJ Tappets
- Aluminum Pistons

Thanks,
Tom


Top of pagePrevious messageNext messageBottom of page Link to this message  By Seth from NC on Thursday, August 22, 2013 - 02:33 pm:

Hey Tom - I had the same question a while ago and it sure seems like there are a gozillion answers and they are all individually presented as the "right" one. Personally, I'm pretty comfortable with getting them all set anywhere in the .010-.014" range, just pick a number and make them all the same. I think with the SS valves and adjustable tappets you can go as close as .010" and it's not going to hurt anything.

Just do whatever is easiest to get to - if you have a few that are on .012" already then set them all there. Or if they're really big get them all down to .014". I personally am not convinced that it's super critical in the T engine, unless you have a 5 main super engine that's going to be turning 3,000+ rpm. That's just me though.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jack Putnam, Bluffton, Ohio on Thursday, August 22, 2013 - 02:35 pm:

I would set it at .010. If it is good enough for a Stipe 250, 280, and the 290. It will work with a reground. Your milage may vary.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ted Dumas on Thursday, August 22, 2013 - 03:53 pm:

I set mine at 0.012. The cam was a standard regrind.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Tom Smith on Saturday, August 24, 2013 - 07:44 am:

Thanks everyone for your response. Forgot to mention that I plan to try the,
"K R Wilson - Method." Would it still be in the .010 to .012 range or should I try a different setting.

Thanks,
Tom


Top of pagePrevious messageNext messageBottom of page Link to this message  By Dennis Seth - Ohio on Saturday, August 24, 2013 - 08:34 am:

Tom,

I just completed a valve job on my '27 Touring and had the same question as to lash setting. I do not have adjustable tappets so I picked a middle number of 0.0120. The advantage you have is you can re-adjust if necessary, I only had one shot at it. The car is running great.
(Be sure to lap the valves to their seats).


Top of pagePrevious messageNext messageBottom of page Link to this message  By Richard Gould on Saturday, August 24, 2013 - 09:15 am:

Les Henry in his book called for .008 intake and .012 exhaust. I used that when I installed good original cam shafts with new valves. Cars ran fine with little valve noise.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Frank Harris from Long Beach & Big Bear on Saturday, August 24, 2013 - 02:13 pm:

10 intake and 12 for exhaust. In the olden days they didn't have feeler gages and they had to pull the head, grind the stem, or seat in order to get the correct lash. All lobes were not the same so the piston position system was the best deal going in order to get them all about the same. With a modern accurate grind just set them at 10 and 12 because you have a feeler gage and they didn't.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Aaron Griffey, Hayward Ca. on Saturday, August 24, 2013 - 11:21 pm:

When I work on a T with adjustable lifters I set them .010" and .012" exhaust.
If they seem noisy I change them to 8&10.
It just happens I am doing the valves part of a rebuild today.
They are reground original lifters so I shoot for 9 and 11 but I will settle for any thing from 8 to 10 on the intakes and 10 to 13 on the exhaust.


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