leyland 600/680 conversion
leyland 600/680 conversion
Hi. I have a leyland opd2 double decker with a 600 engine and was wondering if it was possible to put 680 piston and liners in to make it a 680 or maybe its not as simple as that???? I also have a worldmaster with a horizontal 680 which pulls well. I was considering converting it to vertical and making one engine out of the two. any info or suggestions will be greatly appreciated
Thanks
Thanks
-
- Posts: 718
- Joined: Sun Apr 05, 2009 6:42 pm
- Favourite Vehicle: Silvereagle and Scenicruiser
- Location: vaucluse
Re: leyland 600/680 conversion
mr.hall wrote:Hi. I have a leyland opd2 double decker with a 600 engine and was wondering if it was possible to put 680 piston and liners in to make it a 680 or maybe its not as simple as that???? I also have a worldmaster with a horizontal 680 which pulls well. I was considering converting it to vertical and making one engine out of the two. any info or suggestions will be greatly appreciated
Thanks
can't help with engine advice but please put up some pics
Re: leyland 600/680 conversion
heres some pics of the old gal
- Bedford-29
- Posts: 4942
- Joined: Mon Sep 20, 2010 1:31 pm
Re: leyland 600/680 conversion
One of these was advertised for sale Dick White Alstonville many years ago repowered a Volvo engine I am not sure what gearbox was hooked up to the motor
Previoulsy known as United Diesel 15
Re: leyland 600/680 conversion
thanks for that I'm still weighing everything up. thought about doing an upgrade with a more modern truck engine and running gear but I would like to keep it as original as possible. theres a fine line between orininality and reliability.
- Swift
- Posts: 13273
- Joined: Sat Mar 06, 2004 1:23 pm
- Favourite Vehicle: Porshe 911 Carerra
- Location: Ettalong- the world capital of 0405s.
Re: leyland 600/680 conversion
DAF truck engine is another possibility. It is a very modernised vertical 0680 and will transform your bus into a pocket rocket, if the gearbox can take it.
Why do you need to go quicker in one of these anyway? I have read that the 0600 is a very reliable and durable motor, arguably more so than the 0680. And it sounds nicer too!!
You may find this topic of interest.
https://www.busaustralia.com/forum/view ... +questions
Why do you need to go quicker in one of these anyway? I have read that the 0600 is a very reliable and durable motor, arguably more so than the 0680. And it sounds nicer too!!
You may find this topic of interest.
https://www.busaustralia.com/forum/view ... +questions
NSW, the state that embraces mediocrity.
-
- Posts: 891
- Joined: Sun Mar 07, 2004 10:17 pm
- Location: Brisbane
Re: leyland 600/680 conversion
The difference between a 600 (9.8 litre) and 680 (11.1 litre) are
Cylinder Bore (600) 4.8inches (680) 5.00 inches
Length of stroke (600) 5.500 inches (680) 5.750 inches
So as the crankshaft is different and bore size as well not really able to convert.
All for an extra 25 horses
Cylinder Bore (600) 4.8inches (680) 5.00 inches
Length of stroke (600) 5.500 inches (680) 5.750 inches
So as the crankshaft is different and bore size as well not really able to convert.
All for an extra 25 horses
Who bleedin thanked me? I was just doin my job
- Swift
- Posts: 13273
- Joined: Sat Mar 06, 2004 1:23 pm
- Favourite Vehicle: Porshe 911 Carerra
- Location: Ettalong- the world capital of 0405s.
Re: leyland 600/680 conversion
You will certainly feel those extra horses though!!Maladjusted wrote: All for an extra 25 horses
NSW, the state that embraces mediocrity.
- boronia
- Posts: 21577
- Joined: Sat Mar 06, 2004 6:18 am
- Favourite Vehicle: Ahrens Fox; GMC PD4107
- Location: Sydney NSW
Re: leyland 600/680 conversion
Quite a lot when you only have 115 to start with. The longer stroke would hike up the torque figure, which is probably more useful for stop-start bus work.Swift wrote:You will certainly feel those extra horses though!!Maladjusted wrote: All for an extra 25 horses
Preserving fire service history
@ The Museum of Fire.
@ The Museum of Fire.