Diesel motorcycles. Me want, me shall have.

[mechman600]

Originally Posted by renault_megane_dci

- Injection line would inject at 300 bars. How to manage this ?

Injection pressure is created by the restriction at the injector tip. Without an injector, it would inject into fuel return flow at nearly zero PSI because of lack of restriction.

- Injection pump is build to have some kind of resistance from the injector for timing build up.
Would the lack of injector compromise the reliability of the pump ?

No. "Timing build up" is created by the needle valve in the injector, requiring a certain amount of pressure to crack and start spraying, typically ~125-300 bar. Each pump element in an inline pump also has a delivery valve on the outlet (which is a basically a check valve) that opens above a certain pressure, but not nearly as high as injector cracking pressure.

As a side note, injector cracking pressure does not determine max injection pressure. As RPM and load increases, the injection pressure is determined by the resistance of flow through the tiny needle holes after the needle valve.

[euromodder]

Originally Posted by mechman600

Injection pressure is created by the restriction at the injector tip. Without an injector, it would inject into fuel return flow at nearly zero PSI because of lack of restriction.

But a lack of restriction, generally is no good for a pump ...

[renault_megane_dci]

That being said, I didn't hear any positive echo about this half engine idea.
The positive side is it will reduce the weight of heavy parts and can be done comparatively cheaply but the tricky part is you might need a custom made flywheel ...

[GreenHornet]

Originally Posted by Christ

Dave, I'm really not sure. The above thought was reverse trike, but mc is still nagging me, as well. Disappointed on top of all because I made it to the glen too latetoday... Really not my day...

This is the route I decided to go as it made more sense from a practical stand point but definitely not economic standpoint!

The reverse trike will for sure cost more but there are many advantages that would be difficult in a 2 wheeled motorcycle platform. So its just one of those things that have to be weighed out there is always compromises.

[Curtis in Texas]

Just started stripping out the gas engine of one of the Tigers I have for the diesel conversion. Man those Brits like to bolt stuff together with big bolts. Makes me wonder if they lack faith in their metalurgy or design abilities. It's like stripping a Harley with all those 19 MM (3/4 in) bolts. Massive!!!! I think my Diesel KLR's largest bolt in it is a 14 mm.
I'm begining to wonder if the Diesel Tiger will lose weight once I'm finished.

A build thread will begin once I have enough Tech to show you progress. Right now it's just pulling the old engine and prepping it for a good cleaning and oiling. This first one was a leaker! So it's nasty.


Oh have you guys seen the Elio from eliomotors.com yet? Their engine is a 3 cyl and I'm wondering if they will use the standard bolt pattern where a 3 cyl diesel can be swapped in. They are claiming 84 MPG with 1000 cc 5 speed in a 3 wheeler!

[Flakbadger]

Originally Posted by Curtis in Texas

Oh have you guys seen the Elio from eliomotors.com yet?

Yep!

[cRiPpLe_rOoStEr]

Originally Posted by Curtis in Texas

Just started stripping out the gas engine of one of the Tigers I have for the diesel conversion. Man those Brits like to bolt stuff together with big bolts. Makes me wonder if they lack faith in their metalurgy or design abilities. It's like stripping a Harley with all those 19 MM (3/4 in) bolts. Massive!!!! I think my Diesel KLR's largest bolt in it is a 14 mm.
I'm begining to wonder if the Diesel Tiger will lose weight once I'm finished.

British engineering at its finest. Triumph motorcycles are built like tanks, and well-known for their reliability.

Oh have you guys seen the Elio from eliomotors.com yet? Their engine is a 3 cyl and I'm wondering if they will use the standard bolt pattern where a 3 cyl diesel can be swapped in. They are claiming 84 MPG with 1000 cc 5 speed in a 3 wheeler!

I wonder if that "Perkapillar" 1.1L 3-banger would be a good option...