Cheers...
Cheers...
i dont think the 'engine of the year' had much more room to move is all.
Your a sh|t stirrer...... You'll get our type in trouble again.....
Can't say we have.....
..but the gearboxes fall out?
j.k
Ha ha ha.... Nice.....
Only if you use a Northern Canberra repair joint.....
Currently looking into getting permission to re-post the content from MS forums. In the interest of keeping the thread from blowing out, if we could restrain ourselves to discussion relating to the symptoms, with minimum of banter would be appreciated, thanks.
It's hard to get real statistics on issues such as this. How many modded cars go pop? Who'd know, really. Sometimes just being popular choice of vehicle could make it seem like there's more than there really is...
I'd also like to see a definitive answer to whether the BSD has any effect on the probability of popping an engine. The discussions are spread far and wide and I don't think a clear picture has emerged yet. Some say BSD reduces the likelihood of failure, but there are BSD engines that have failed. If anyone has seen a clear trend let us know.
Bsd???
Balance shaft delete
I would have thought getting rid of the balance shaft would cause MORE problems...it is there to make sure the engine is balanced right...correct?
Interesting question tric, and it opens up whole new can of worms. Some engines rely on a balance shaft to control fourth order harmonics so the engine stays together, but BSD proponents believe that Mazda only put it there for NVH reasons and it is otherwise detrimental to the engine for reasons such as interfering with oil distribution, placing a huge amount of drag on the crank (it's very heavy) and a few other reasons I can't remember.
Not saying I agree, but that's the rationale.
A while back some of the guys who have done this mod believed they were less likely to pop. But there's been a few failures of BSD engines since then and I'd be curious to know if it's affecting the probability.
Gone to Volvo
Thats what I have read about it too, it frees up some weight. But that alone could cause issues, I have tried light weight flywheels on motorbikes and small 2 cylinder motors and have found cases where it actually spins too fast due to the lack of weight but a 4 cylinder car crank should be different...there is that magic word should
I think at the end of the day the Mazda motor seems to be very temperamental, be it NA or Turbo.
I was gonna say that but I'm in enough trouble already.....
@ kmh001
This is actually a good thread once you get rid of the b!tching and its great to know that we have some good minds on here till fill in gaps with information and what not
The balance shaft also places an angular load on the crank due to the angle of the gears that are cut.
Thats theory one.
But its a lot less force than pushing the clutch pedal down to shift, not many people think of that though...
Maybe its a sh!tty thrust bearing clearance issue.. i just don't buy this oil hydro lock idea.. If that were the case we would be seeing a lot of blue smoke at random vacuum ranges..
The other idea is that the crank tends to walk a little due to the thrust bearing, and at a certain point will lock up the BS. Boom boom
But this shouldn't cause bent rods..
SO im lost
Ahh i just don't know
Doc
Last edited by Doc; 06-05-2009 at 02:59 PM. Reason: typo
What happened to the rat in the hat Doc? And what is that dog shooting up?