Author Topic: Single Row Chain (Read 13384 times)

m44power · « **on:** September 16, 2008, 02:50:12 PM »

Single Row Chain anyone knows something about this modification ? maybe a chain of M30 can do the job ? or from a new N43 ? does it worth the trouble ?? any opinions?

halcron · « **Reply #1 on:** September 17, 2008, 02:45:38 AM »

I do know MM has single row chains and sprockets for M42 but no sure how much it cost though. IMHO, single chain will reduce parasitic drag a little and should able to increase HP a little.

m44power · « **Reply #2 on:** September 17, 2008, 10:50:45 AM »

MM uses original machined sprockets and some single chain i can see the benefits of this mod but it worth ?

christophbmw · « **Reply #3 on:** September 17, 2008, 10:55:35 PM »

im sure its not more than 1hp, i think MM does it to extend the life for high revving engines.

m44power · « **Reply #4 on:** September 19, 2008, 02:02:56 PM »

and what about parasitic drag ?

Massimo · « **Reply #5 on:** September 23, 2008, 05:17:22 PM »

Reduces rotating mass more rpm

m44power · « **Reply #6 on:** September 24, 2008, 11:16:53 AM »

im think its verry easy conversion some machining and N4x chain

GrindCulture · « **Reply #7 on:** September 24, 2008, 03:04:11 PM »

I'd like to see someone attempt it and see if it's worth it. Could be another little job to add to my "to do" list. I'd give it a go myself, but if I balls it up then I'll be walking to work...

Massimo · « **Reply #8 on:** September 24, 2008, 05:52:59 PM »

I don't think the performance gain is worth the risk a of single chain, the twin chain is alot stronger and a safe gard if one breaks.

nuvolarossa · « **Reply #9 on:** September 25, 2008, 06:39:49 AM »

there are a lot of things that can do to this engine before than that...

e30guydownunder · « **Reply #10 on:** September 25, 2008, 11:13:03 PM »

Quote from: Massimo;57305

I don't think the performance gain is worth the risk a of single chain, the twin chain is alot stronger and a safe gard if one breaks.

if you think about it...the fact that BMW have gone to the effort of developing a single row chain for the N4x series engine (we'll assume its safe) should be saying something.

And given it is a newer design, if it does fit?

it will also be most likely somewhat stronger than even our double row timing chains.

Don't forget that BMW was quite happy running the single row on the m30's and they even ran a single row chain on the euro version of the m88/3 in m635CSi's

m44power · « **Reply #11 on:** September 28, 2008, 09:49:15 AM »

Quote from: e30guydownunder;57391

if you think about it...the fact that BMW have gone to the effort of developing a single row chain for the N4x series engine (we'll assume its safe) should be saying something.

And given it is a newer design, if it does fit? it will also be most likely somewhat stronger than even our double row timing chains.

Don't forget that BMW was quite happy running the single row on the m30's and they even ran a single row chain on the euro version of the m88/3 in m635CSi's

+1 are m635csi a single row chain ?

m44power · « **Reply #12 on:** September 28, 2008, 09:52:05 AM »

http://www.realoem.com/bmw/showparts.do?model=5531&mospid=47202&btnr=11_0425&hg=11&fg=25

yes it is....

m44power · « **Reply #13 on:** September 28, 2008, 09:55:10 AM »

Quote from: nuvolarossa;57341

there are a lot of things that can do to this engine before than that...

yes but this one it cost nothing...

nuvolarossa · « **Reply #14 on:** September 28, 2008, 11:29:27 AM »

391g for the N42 chain and 894g for the M44

that's some nice weight loss!
M43 (8v) sprocket is for single chain, do you think that two of the can fit on our engines with N42 chain?