FRANK PKNY
Well-known member
Hi guys, I have been in limbo for quite a while. Can someone tell me what year the closed valve engine was itroduced? Thanks in advance. Frank PKNY
First year of closed valve engine
- Thread starter FRANK PKNY
- Start date
FRANK PKNY
Well-known member
Well I googled it and came up with this.
Design changes over the years
The following major changes were made (listed by year):
Design changes over the years
The following major changes were made (listed by year):
- 1909 — First model year - Water pump was discontinued; subsequent Model T engines used thermosyphoning to circulate the coolant.
- 1911 — Valve covers were added
- 1917 — Higher head with larger water jacket
- 1919 — Engine starter introduced as an option
- 1920 — Lighter-weight rods and pistons
- 1922 — The cylinder casting was changed so a single valve cover could be used
- 1926 — An extra boss was added at the rear for two additional bolts stiffening the transmission,
- 1927 — The carburetor throttle rod was re-routed over the engine
Royce P
Senior Member
All 1911 blocks have the serial number by the oil filler. During mid fiscal year / model year 1912 the serial number moved to above the water inlet. Casting dates for that type of block are about mid January 1912.
The open valve block was used into the middle of 1911 model year. The closed valve chamber showed up on blocks about the middle of November, 1910. There would have been left over open valve engines being used up for perhaps the next month.
The open valve block was used into the middle of 1911 model year. The closed valve chamber showed up on blocks about the middle of November, 1910. There would have been left over open valve engines being used up for perhaps the next month.
FRANK PKNY
Well-known member
Thanks for the reply Royce. Enjoy, I sold my T last year to get the money to buy a 1911 EMF touring. Kinda miss a T. I am looking for a magneto like the one pictured. Splitdorf model D I also have a Splitdolf model F which is similar for trade or swap or sale.
