Big valves

[Olderisbetter]

I saw this while looking at a link and loved the crazy size of this valve, I saw one once at a workshop used as a anvil type set up to bash and shape metal on.

 

[Anguz]

i use 4 simlar for my lounge speaker stands

 

[slim_boy_fat]

i use 4 simlar for my lounge speaker stands

Marine engine? Or are all the big ones 2-stroke now?

 

[scottmk1]

The 2 strokes generally have exhaust valves.

 

[Barking Mat]

No, most big marine engines are 4 stroke nowadays.

 

[slim_boy_fat]

Another school day

 

[scottmk1]

No, most big marine engines are 4 stroke nowadays.

The small one's are, but not the big one's.

 

[scottmk1]

 

[addjunkie]

No, most big marine engines are 4 stroke nowadays.

The turbocharged hydraulic exhaust valved two stroke is alive and well in the shipping industry.

Google sulzer or Man B& W

 

[Anguz]

mine are allen s37 from bedford. worked there 17years in the testbay

 

[dobbslc]

The bloke in the painting on the wall is screaming at the size of that!

 

[Tupers]

The bloke in the painting on the wall is screaming at the size of that!

He’s just terrified at the idea of lapping a set in.

 

[dobbslc]

Nah! Wouldn't take Munch to do them....

 

[Morrisman]

No, most big marine engines are 4 stroke nowadays.

The days of the filthy, stinky, smokey, thirsty Detroit Diesel two strokes has long gone.

I worked on some of them many years ago, interesting design, 12 or 16 cylinders, two super chargers, four turbos etc.

 

[scottmk1]

The days of slow speed marine diesels ie 2 stroke 100rpm10's of thousands of horse power is still here though.

https://en.wikipedia.org/wiki/Wärtsilä-Sulzer_RTA96-C

 

[Barking Mat]

I stand corrected!

 

[slim_boy_fat]

The small one's are, but not the big one's.

Seems I may not be as daft as I thought.....

 

[addjunkie]

The days of slow speed marine diesels ie 2 stroke 100rpm10's of thousands of horse power is still here though.

https://en.wikipedia.org/wiki/Wärtsilä-Sulzer_RTA96-C

I cut my teeth on the old RND 90, exposed rocker arm, push rod and tappet set up operating a single exhaust valve.

Many of the modern cruise and technical ships have gone over to diesel electric now. As it adds maintenece on the run.

 

[scottmk1]

I work on diesel electric these days, but was deep sea a while back on the pre flex sulzer rta's and some small man B&W engined vessels

 

[addjunkie]

I work on diesel electric these days, but was deep sea a while back on the pre flex sulzer rta's and some small man B&W engined vessels

I left all that behind and went over to the dark side of platforms and FPSOs