Connecting rod cotter pins
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Topic author - Posts: 115
- Joined: Mon Jan 07, 2019 7:40 am
- First Name: John
- Last Name: Wright
- * REQUIRED* Type and Year of Model Ts owned: 1922 Touring, 1925 Roadster
- Location: Martin, Ohio
- MTFCA Number: 50228
- Board Member Since: 2018
Connecting rod cotter pins
Just took the inspection cover off the bottom of a new to me Roadster. We suspected the motor was rebuilt and never ran. Stuck bore scope into head and no evidence it was started just shiny .20 over pistons. Looks like it has a reground crank and cam as well with new valves, hardened seats, adjustable lifters and new Babbitt. There are dippers installed but no cotter pins on the rod nuts. The tabs on the dippers are bent over to the flats on the nuts.....except on #1 which has the tabs bent and cotter pins installed. Is this regular practice instead of using pins or should I straighten them, retorque and install pins? Thanks for any advice.
Kind Regards
John
1922 Touring "Tinker"
1925 Roadster "Pops" (Pile Of Parts)
Martin, Ohio
John
1922 Touring "Tinker"
1925 Roadster "Pops" (Pile Of Parts)
Martin, Ohio
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Re: Connecting rod cotter pins
Yes on cotter pins.
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- First Name: craig
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- * REQUIRED* Type and Year of Model Ts owned: 1919 Firetruck/1922 Speedster
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Re: Connecting rod cotter pins
Hi John,
Do the holes line up for the bolt & nut? if they don't you have no choice but to bend the tabs & tighten until the holes line up. If the rod bolts are Chevy and have no holes remove castellated nuts & get Chevy nuts & torque to Chevy specs. or replace the rod bolts & nuts. and no that's not common practice as far as I know.
Craig.
Do the holes line up for the bolt & nut? if they don't you have no choice but to bend the tabs & tighten until the holes line up. If the rod bolts are Chevy and have no holes remove castellated nuts & get Chevy nuts & torque to Chevy specs. or replace the rod bolts & nuts. and no that's not common practice as far as I know.
Craig.
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- * REQUIRED* Type and Year of Model Ts owned: 1912 van, 1917 shooting brake, 1929 roadster buckboard, 1924 tourer, 1925 barn find buckboard, 1925 D &F wide body roadster, 1927LHD Tudor sedan.
- Location: Gawler, Australia
Re: Connecting rod cotter pins
You can make the split pin holes line up with the castelations by sanding the back face of the nut on a flat surface. Do it a little at a time. When the required tension is reached and the holes line up, fit your pins. I have never seen the dippers used as locking devices either, although it is common practice on other vehicles.
Allan from down under.
Allan from down under.
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Re: Connecting rod cotter pins
When all else fails, do it the way Ford says to.
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Topic author - Posts: 115
- Joined: Mon Jan 07, 2019 7:40 am
- First Name: John
- Last Name: Wright
- * REQUIRED* Type and Year of Model Ts owned: 1922 Touring, 1925 Roadster
- Location: Martin, Ohio
- MTFCA Number: 50228
- Board Member Since: 2018
Re: Connecting rod cotter pins
Going to pull the engine tomorrow for painting. I am going to straighten the dipper tabs and torque the nuts and install the pins. I think I read they should be 30-35 ft lbs but need to confirm that. Thanks again for everyone's advice.
Kind Regards
John
1922 Touring "Tinker"
1925 Roadster "Pops" (Pile Of Parts)
Martin, Ohio
John
1922 Touring "Tinker"
1925 Roadster "Pops" (Pile Of Parts)
Martin, Ohio
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Re: Connecting rod cotter pins
Yes on the 35. Model A, same. Check for pulled thread.
I know the voices aren't real but damn they have some good ideas!
1925 Cut down pickup
1920 Dodge touring
1948 Ford F2 pickup
1925 Cut down pickup
1920 Dodge touring
1948 Ford F2 pickup