Page 1 of 1
M20 big-end bolts
Posted: Wed Nov 17, 2010 5:50 pm
by E21meister
I'm replacing the big-end shells on the M20 engine in my 323i. Now, the crankpins (the bolts on the bottom of the conrods that attach them to the crank): BMW quote two sizes, 44mm and 53mm. The Haynes manual quotes two sizes for standard & regrind that are similar in length to 44mm.
Can anyone elucidate for me?
Re: M20 big-end bolts
Posted: Wed Nov 17, 2010 11:53 pm
by murran
elucidate?
Re: M20 big-end bolts
Posted: Thu Nov 18, 2010 2:32 am
by E21meister
murran wrote:elucidate?
–verb (used without object)
to provide clarification; explain.
Me & my big brainbox words...
Re: M20 big-end bolts
Posted: Thu Nov 18, 2010 7:12 pm
by murran
im 29 and ive never seen/heard of that word!
does realoem not shed any light on it?
Re: M20 big-end bolts
Posted: Thu Nov 18, 2010 11:58 pm
by E21meister
Real OEM has two different types: 53mm (no.9) and another (the left-hand one) where no length is quoted.
Looks like I'm gonna have to take one out and go down the dealers with it!
Re: M20 big-end bolts
Posted: Sat Nov 20, 2010 2:59 pm
by murran
id guess at the one on the right. just cus it looks right from when i had my old 320/6 engine in bits. the bolt going up i mean.
i stripped the conrods out of it to sell (130mm rods for 2.7 conversions) got £30odd quid for them on ebay.
i cant imagine 323i rods looking much different.