Het is geel en het.. V1.2

[Marc1970]

Volvo vindt dat de B20 stangen 6 gram max mogen verschillen en de zuigers 10 gram, dat is 1%. En dan worden ze nog op 'handige ' wijze bij elkaar gezocht, en gemarkeerd als set. Iemand gaat ze uit elkaar halen en wegen, om tot de conclusie te komen dat het goed in elkaar zit:

Also, since this engine never has been realy smooth I will have the crank shaft balanced. I also measured the weight of the piston and rods:

#1 piston 579 grams, con rod 817 grams.
#2 piston 581 grams, con rod 822 grams.
#3 piston 579 grams, con rod 814 grams.
#4 piston 581 grams, con rod 822 grams.

This adds up to a total (including the piston pin (all 151 grams) of:
#1 1547 grams.
#2 1554 grams.
#3 1544 grams.
#4 1554 grams.

I know the conrods are marked but is there any harm in redistributing the rods so I have a better weight distribution? Currently the heaviest piston are on the heaviest conrods. I thought I might just match the heavy pistons with light rods and vice versa. But is it more important to have #1 and #4 have the same weight (and #2 and #3) or should #1 and #3 (and #2 and #4) match? (like it current)


Ben,
It looks like they got it selected pretty well, with 1 and 3 opposite as
are 2 and 4. For the difference in weight they are arranged for best
balance. You DEFINITELY don't want the sum of 1 and 4 much different from
the sum of 2 and 3, since 2 and 3 balance against 1 and 4.

Heel lang verhaal samengevat: https://www.brickboard.com/RWD/index.htm...show_all=1