75 replies to this topic

[SA EH]

Dave won't be using bmw rods in his 15:1 n/a 400hp street engine then?
Disappointed.....

[N/A-PWR]

Sorry Mate,

 

Need to select all the great forum Member goodies,

 

aka 5.71 rods

still can fail, but will test out the big bang, again and again

Edited by N/A-PWR, 25 September 2016 - 08:41 PM.

[Ice]

Dave won't be using bmw rods in his 15:1 n/a 400hp street engine then?
Disappointed.....

15::1 pmsl

[ozyozyozy]

A number of the bmw engines are notorious for hurting big end bearings, some of the 6's have big stroke and small bores, not very good for a high rpm engine.

Agree with johno tho, with whats out there, weight would be the reason to run them.

There are some VERY nice aftermarket bmw rods out there but cost more than a good set of rods for a small block chev.

[piquet]

Argo rods seem to be what a lot of Nc boys are using in the red 6's

[turboman]

bmw rods are 90-100 grams lighter than standard/starfire rods once protrusion is removed from big end,id say that was significant enuff.and longer.12 thou wider on big end so either rod is narrowed or crank widened.id go with the wider crank as they need regriding anyway when rebuilding.would be a cheap alternative

[turboman]

and this makes them lighter than spool/argo etc rods.

[I'm a Red Motor fiend]

well davey at least you admit that you like dicks.

Oh my god, pmsl! Jason actually got one back!! thanks.

Edited by I'm a Red Motor fiend, 26 September 2016 - 04:46 AM.

[SA EH]

Someone a little more clued up on newton's laws could do the maths.
That 100g would become how many kilos of rotational force at 7000rpm?
A shitload I reckon. It would be taking a fair bit of load off the crank/bearings & block.

[turboman]

exactly

[turboman]

and what is it with all the stupid comments about dicks etc,it is a questionare about bmw conrods nothing more.take the stupid comments to private msg

[turboman]

Exactly right johnno.the bmw rod is only 1.5mm longer than the holden ,How much interest would there be from racers and people on this forum if i were to get some h beams made that were 13mm longer ,stronger than starfires ,took an off the shelf piston and were a bolt in fit.

depeds what bmw rod you use there are quite a few

[SA EH]

At the end of the day I'm pretty happy they came in significantly under the weight of anything else that was available at the time, if they didn't have all the work done to them, yes it probably would have been a waste of time. And they are a quality rod.
The problem with selecting beemer rods, or I guess any other manufacturers rods, is its hard to "just go & have a look at them" if you know what I mean. Not everyone will have an engine stripped to inspect.

[SA EH]

Alternatively you could go a set of e34 M5 s38 straight 6 rods if you can find a set. They are identical specs to the m30 rods but the length is a longer 5.670".
Would be good for a stroker setup maybe?
Thoughts Mick?

Edited by SA EH, 26 September 2016 - 05:19 PM.

[turboman]

what is the lengh of a standard/starfire conrod

davey said that the big dicks hanging down the bottom interested me.so he must be a wolly moofs a shirt lifter pillow biter,pick up the soap in the shower and starring in his own gay porn movies.

you need to spend more time trying to get your car going

[SA EH]

And we're talking a standard length rod such as a starfire is 5.25", so most of the bmw rods are longer.
Everyone is different so you will still get old mate down the road machining in some bmw rods while you go & buy yourself some spool rods & throw them in.