Oddly, most of my motors are four cyl. The rest are eight except for the two sixes.Quote:
Originally Posted by Tombie
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Oddly, most of my motors are four cyl. The rest are eight except for the two sixes.Quote:
Originally Posted by Tombie
4 cyl = pulse every 90deg
6 cyl = pulse every 60deg
8 cyl = pulse every 45deg
5 cyl = pulse every 72deg
A 5 cyl engine should be smoother than a 4 or 6
I don't know Kev, the M57 Diesel inline 6 in the L322 is smooooooooth....
Just to expand on this, as Mike says, 4 cylinders are harsher than 8, add to that the Isuzu is close enough to 1L per cylinder. Which really increases its appetite.Quote:
Originally Posted by Tombie
Life's little ironies: The low down torque of the 4BD1, which makes it an exceptional motor for its applications, is what munches gearboxes.
Why is a 5 cyl smoother, and is the 60 degree v6 configuration help? Thanks.Quote:
Originally Posted by Fluids
2 versus 4, unless it's a 2 stroke....Quote:
Originally Posted by Tombie
Hello,
Well it makes some sense of what everybody is saying that it absorbs the vibration of everything else. I was just cures I seem to have my answer thanks everybody for the replies......looks like a Ross HB is the go then.
Iain
A 4 cylinder engine pulses (fires) every 180deg of rotation assuming its a four stroke engine :)
I am still wishing I could shoehorn a 6v53T GM into a defender............ smooth,v6 grunt!!! The sound would just be an added bonus :D:D
"6v53 Detroit , turning diesel into noise since '56" :)
http://www.aulro.com/afvb/technical-...tml#post743795Quote:
Originally Posted by Mick_Marsh
The harmonic balancer isnt there to stop engine pulses (it can help though), thats the job of the flywheel, The harmonic balancer is there to absorb the vibrations and prevent harmonics from developing that can crack the crank and the bearings. initialy it wasnt needed due to the low speeds ad high mass of the crank and block but as engines lightened up it became a required evil. lts less of an issue now with modern design abilities but one of its second advantages of prolonging belt life keep it around.
Where you might be able to convince me to replace a dual mass flywheel in some circumstances unless you oly want a short duration high power high rev only engine you wont convince me to fit a solid pully in place of the harmonic balancer.
That's what I thought.Quote:
Originally Posted by Blknight.aus
The engines I have had balanced, from what I remember, they only wanted the harmonic balancer, crank and flywheel (FYI, single mass type).
These were small fours.
Ended up being a waste of money. Well, you're only young once.