1928 jdl

[marsh1915hd]

This is a Ricy cylinder. Has some crazy welding on it. Three different places up the sides and all the way around the top ? What was this guy doing? There is a set. Running Alcohol IMG_2690.jpgIMG_2692.jpgIMG_2693.jpgIMG_2695.jpg?

[MMasa]

I think that Terry mentioned that they were not Ricy cylinders.
Mark

show us the inside. they are not all the same

[rwm]

[ATTACH=CONFIG]12093[/ATTACH][ATTACH=CONFIG]12094[/ATTACH][ATTACH=CONFIG]12095[/ATTACH]Look at these cylinders, are not all JDL cylinders tapered finned? These are not Ricy cylinders.

show us the inside. they are not all the same

[c.o.]

Cory....Tell Joe G. that Stan with the original black 48' pan said hey. He's a hell of a nice guy.

Will do.........

[Runnlo]

Thanks Mark....and everyone who posted. I'll pass this info along, in hopes that he will be able to figure out what he has actually found.

Cory....Tell Joe G. that Stan with the original black 48' pan said hey. He's a hell of a nice guy.

Thanks again,
Stan..........................Runnlo

[MMasa]

Terry
Aren't those JH / FH cylinders? Road model 61" two cam. JDH's are plentiful compared to the 61" version. Quite rare indeed.
Mark Masa

[ATTACH=CONFIG]12093[/ATTACH][ATTACH=CONFIG]12094[/ATTACH][ATTACH=CONFIG]12095[/ATTACH]Look at these cylinders, are not all JDL cylinders tapered finned? These are not Ricy cylinders.

[marsh1915hd]

This is a JDL motor that i have for sale, $900. IMG_6992.jpgIMG_6994.jpgIMG_6995.jpgIMG_6991.jpg

[marsh1915hd]

IMG_0956.jpgIMG_0950.jpgIMG_0951.jpgLook at these cylinders, are not all JDL cylinders tapered finned? These are not Ricy cylinders.

[c.o.]

There was a JDL for sale near me a few years back. I just about jumped on it but got sidetracked and let it go... Glad to hear you're well enough to post Tommo!

[Tommo]

Here we go a standard J cage along with the Handed cages that are used in the cylinders with the tall intake housings.
The second photo shows the handed vanes.
I can't type too good at present, had a fall off my 1957 Manx Norton and are at present very second-hand.
The wife reckons the body is "very colourfull"

[Tommo]

The inlet cages were handed as well
The divider in the centre of the inlet slot was shaped like vane and started the incoming gases swirling.
One vane for a clockwise swirl on the rear cylinder and the other for an anti-clockwise swirl on the front cylinder.
I'll photograph some and post tomorrow

[exeric]

Thanks Pete, and Mark. That clears up a lot which really says something when the topic is the J series

[MMasa]

Runnlo
I've never seen the X on a case.

Eric
The JDL cylinders are the same as a JD and JDH. The JL however has a unique cylinder. The intake valve housings are the tall style like the -23 intake housings, but they have a smaller diameter.

Mark

[Runnlo]

Thanks to everyone for your input. As i said ....I havent seen the bike yet, so I can't say what the actual serial designation is....he told me jdl, I see in Bills list that there is no jdl, only jdxl. Is the X actually on the cases, and what does the X stand for? My guess would be experimental, or just for high performance, or maybe both. Is this correct?
Thanks again,
Stan.................Runnlo

[pete reeves]

Eric.
It’s my understanding that the JDL used the same Dow pistons as the JDH which would have given a slightly higher compression ratio than the JD which had iron pistons. The cylinders were the same.

Bill.
Is there a typo on your list as its showing a JDH as having Iron alloy pistons not Dow?


Pete Reeves 860