Lifter question

Discuss all things Model T related.
Forum rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules

Topic author
Modeltmike
Posts: 81
Joined: Sat Mar 09, 2019 5:12 am
First Name: Mike
Last Name: Sleep
Location: Kansas
MTFCA Number: 31639
MTFCI Number: 31639

Lifter question

Post by Modeltmike » Tue Apr 28, 2020 10:52 pm

I am helping a friend with a valve job. When we pull up the valves there is a “cap” over the lifter. It is small and can be removed. My cars all have adjustable lifters and I had not seen this before. Was this standard for the non adjustable lifters? Thanks Mike.


Kerry
Posts: 448
Joined: Mon Jan 07, 2019 2:42 pm
First Name: Frank
Last Name: van Ekeren
Location: Rosedale Vic Australia

Re: Lifter question

Post by Kerry » Tue Apr 28, 2020 11:46 pm

No, not standard for the T engine, rotator caps would have been used in a rebuild some time later in it's life.


Gene_French
Posts: 323
Joined: Tue Jan 08, 2019 9:58 am
First Name: Gene
Last Name: French
Location: Nunn, CO
Board Member Since: 2014

Re: Lifter question

Post by Gene_French » Wed Apr 29, 2020 8:09 am

Mike:
also , there are shims that were used over the ends of the tappets to take up excess wear or to correct the clearance when too much material was removed from valve stem or tappet ( lifter) during a valve job … these stamped cups were usually in the .015 to .030 thickness … don't see these very often … always an optimist ..gene french


Topic author
Modeltmike
Posts: 81
Joined: Sat Mar 09, 2019 5:12 am
First Name: Mike
Last Name: Sleep
Location: Kansas
MTFCA Number: 31639
MTFCI Number: 31639

Re: Lifter question

Post by Modeltmike » Wed Apr 29, 2020 8:15 am

Did they fit over a standard lifter, or is it a special lifter? I would assume the valve would have been shortened a little to get clearance? What was their purpose? Thanks Mike


Adam
Posts: 661
Joined: Sun Jan 06, 2019 11:57 am
First Name: Adam
Last Name: Doleshal
Location: Wisconsin
MTFCA Number: 23809
MTFCI Number: 1
Board Member Since: 2000

Re: Lifter question

Post by Adam » Wed Apr 29, 2020 10:04 am

It’s an accessory part that was put over the end of the tappet because the end is worn too deep. People used these shims when they did a valve job instead of replacing the tappets. If they aren’t worn thin, you can leave them in there. If you have the cam out, you should replace the tappets.

Post Reply Previous topicNext topic