Tee Dee .15

ZACATTACK Tue Feb 26, 2013 10:48 am

What type of piston was used in the Tee Dee .15 released in 1961 that was having trouble and replaced by the .15 Special?

ian1954 Tue Feb 26, 2013 10:59 am

It was a ball and socket piston.

**Cribbs74** Tue Feb 26, 2013 11:22 am

Yep, Ian is correct they went from ball socket to a wrist pin like your MKII Lew.

They also went from thin walled cylinder to thick.

ian1954 Tue Feb 26, 2013 11:40 am

There is also another difficulty with the Mk1 vs MkII.

If someone busted a Mk1 then it wouldn't be quite so straight forward to repair it. The Mk1 was 2.45cc where as the MkII became 2.5 cc.

Therefore, both the cylinder and the pistons are not interchangeable with each other.

Similarly, it looks as if the stroke as well as the bore was changed. If so, then the crankshafts will also have a different throw!

ZACATTACK Tue Feb 26, 2013 1:13 pm

cribbs74 wrote:Yep, Ian is correct they went from ball socket to a wrist pin like your MKII Lew.

They also went from thin walled cylinder to thick.

Your going to join the MKII Club Soon Ron. I made sure of it the other day.. Very Happy

Jason_WI Tue Feb 26, 2013 1:15 pm

Not all early 15 pistons are the same either. Seems like there was a change from the early ones used on the olympic and sportsman to the ones used on the early medallion and TD engines. Lots of changes on the 15 design is a few years time span.