BMW Connecting Rod Modifications
John Edwards discusses how he machines BMW connecting rods to reduce weight for increased RPM for naturally aspirated and forced induction engines. www.engine-machining.com
Video Rating: 4 / 5
John Edwards discusses how he machines BMW connecting rods to reduce weight for increased RPM for naturally aspirated and forced induction engines. www.engine-machining.com
Video Rating: 4 / 5
I know chaps who, if you layed those rods on the ways like that, would pick them up and hit you with them.
@upmykoolaid – What is your question? I’m not sure that I understand what you mean by the ‘bake cable’ and the ‘oven’????????
@dstyleshansta – what do you mean? Like pull out the plug so engine doesn’t roar n bake the cables? Like in the oven n shit? Is that what u mean? Let me know man..
They are factory balance weights
what are those lumps of steel hanging off both ends of the rod? its not the first one I have seen… would you have any ideas why they would do that?
Way too heavy on the cut. That insert was SMOKED! I almost never go more than half of 1mm on a facing cut, but never on interrupted cuts.
isnt griding down that metal going to reduce the rods integrity? idk i could be wrong
What rpm are you running at? How about ipr? Thanks for the vid.
These are MOTINS Serbian connecting rods. Am i right???
its excellent film on BMW Engine parts
looks dangerous
wow, that 40 thou cut was sure knocking hell outta the cutting bit, wouldnt you normally go in in slightly smaller cuts than that? it sounded a lot of shock on the bit tip, and no squirt of lube either? nice job.
@fiatnutz Hi, is it possible to make the rods and crank wider, so one can use wider bearings for drag race purpose? Thanks.
got a bmw m30b35 engine from a e23 745i turbo would love to do something similar to it
dont know how much for shipping an engine,,,:)
Great, really educational, thankyou. I wonder though does the machining near the bolts not weaken the big end somewhat ? Thanks again though, these vid’s of yours are great viewing.
@koukoudaman ok but after saving wheigt from pistons, rods you have to mach that wheigt with the conter wheights of the crankshaft wright? it’s not enough to pair the oposite piston/rods (for eg in a 4 cyl engine) the conterwheight of the crank must be equal whith the wheigt of the piston plus bolt plus a partial wheigt of the rod otherwhise will not bee neded (the conterwheight)
He says it very clearly in the video…
Saves about 28 grams.
ok now put some videos of how you mach the new wheigt of the rods plus pistons with the cranckshaft please… greetings fom italy
Na dann: MACH`S mal, lass es in nem messlabor messen und dann siehste mal!!!!
Normtolleranz für Kurbel / nockenwellensitze, zylinder etc. etc.: Rundheit kleiner 3my!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
und? plastisch verformt sich da nix… also was solls??
Wer redet denn von aussen?? Mein die “ungaublich gute” 3punktspannung mit nem futter was definitiv nicht synchron spannt!!! und das am kurbelwellensitz…………….
Wenn er mal die Rundheit messen lassen würde, würde er es sicher nicht mehr so machen!!!!!!!!!!!!!!
wen juckts wenn das teil aussen 0,05mm eiert?? original ists roher guss…
Das kann ja wohl nich dein ernst sein???!!!
Naja rundlauf und genauigkeit scheint ja egal zu sein!!!!
HILFE
at 5:12, did you turn it your way so that if it takes off it flies to the wall/down? Safety first
I don’t know if I would call it dying, but those of us who have been at it fro more than 40 years are dying off. The industry is somewhat mature and only those people who make an investment in good equipment and can do the odd-ball stuff are going to stay busy. If you just rebuild SBC & BBC engines, your career is over and you don’t know it yet. If you haven’t transitioned over to import engines, than you are way behind the curve.