I had to replace the fiber timing gear on my Rajo head engine. It is equipped with a distributor. I have to find TDC to re time it. I want to make sure I got it right.
https://youtu.be/ivtvlMwcIAI
BTW the timing gear was replaced with a metal one and the fiber one came with the engine and head and I knew it was going to fail at some point.
Finding top dead center with Rajo B head
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- Posts: 52
- Joined: Sun Jan 06, 2019 12:30 pm
- First Name: Mike
- Last Name: Bender
- * REQUIRED* Type and Year of Model Ts owned: 1913 Canadian touring, 1924 Roadster, 1926 Mercury speedster, 1927 Roadster p/u, 1920’s bobtail dirt track racer
- Location: Tulsa OK
- MTFCA Number: 21160
Re: Finding top dead center with Rajo B head
Dial indicator in the spark plug hole for absolute. The crank shaft pulley horizontally will get you very close
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- Posts: 52
- Joined: Sun Jan 06, 2019 12:30 pm
- First Name: Mike
- Last Name: Bender
- * REQUIRED* Type and Year of Model Ts owned: 1913 Canadian touring, 1924 Roadster, 1926 Mercury speedster, 1927 Roadster p/u, 1920’s bobtail dirt track racer
- Location: Tulsa OK
- MTFCA Number: 21160
Re: Finding top dead center with Rajo B head
Crank shaft pulley pin will be horizontally
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- * REQUIRED* Type and Year of Model Ts owned: too many. '14 touring, 2 depot hacks, 2 speedsters
- Location: ALAMEDA,CA,USA
Re: Finding top dead center with Rajo B head
Make a positive stop out of an old sparkplug. Don't make it so long that you hit a valve- just long enough to stop the piston. Crank the engine clockwise until you hit the stop, mark your pulley, rotate the engine the opposite direction until the piston contacts the stop, make a mark. TDC is exactly between the two marks. Do not use a dial indicator and assume TDC is when the indicator stops moving, as that is a terribly inaccurate way to do it.
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- * REQUIRED* Type and Year of Model Ts owned: 1925TT, 1926 Martin-Parry bodied wagon, 1927 mercury bodied speedster
- Location: Norwalk Ohio
Re: Finding top dead center with Rajo B head
I always use this simple trick on my cars. I think Ted Ashman shared this originally. I put a small chisel mark ( Dremel cutoff would do the same) at top dead center. I also but a little match mark in the pulley ( Dan’s pulley , of course!). Makes it easy peasy to just reach down to find TDC at the 3 o’clock mark with your fingernail.