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[laylonlor]

I can't understand HD knowing there's a weak crank, will continue to sell that engine!!, I mean why not just start welding them after they found a few are bad ones, it woundn't cost any more,, let alone buying one and then have  to fix  it before running it, just build one from the crank up!! if folks stopped buying them they would address the problem, 

[sadunbar]

I don't understand why you would buy a new big inch motor then completely rebuild it and loose your warranty. Wouldn't it be better to have one custom built from the start?

Harley's 120r motor does not come with a warranty...   

[sadunbar]

I can't understand HD knowing there's a weak crank, will continue to sell that engine!!, I mean why not just start welding them after they found a few are bad ones, it woundn't cost any more,, let alone buying one and then have  to fix  it before running it, just build one from the crank up!! if folks stopped buying them they would address the problem, 

Does the 120r motor have a "weak crank"?  I think those who are welding the crank in their brand new 120r motors are looking for added insurance against a potential problem that may never happen.  I don't personally know of a single 120r crank failure.  I've "read on the internet" of one or two 120r crank failures, but not on a stock 120r motor.

My 120r motor is far from stock, and has accumulated over 15K miles - some of those miles were pretty harsh - and my crank runout is exactly what it was brand new - about .0008.

[Twolanerider]

I don't understand why you would buy a new big inch motor then completely rebuild it and loose your warranty. Wouldn't it be better to have one custom built from the start?

The "why buy it and rebuild it" versus buying a set of crankcases and building what you want to begin with has come up before.  Answers have varied.  Warranty isn't a consideration though.  The 120R does not come with a warranty.  Zero, zilch, nada warranty right out of the box.

[laylonlor]

when my 110 goes south i'll get a 124 built 

[Rooster]

Does the 120r motor have a "weak crank"?  I think those who are welding the crank in their brand new 120r motors are looking for added insurance against a potential problem that may never happen.  I don't personally know of a single 120r crank failure.  I've "read on the internet" of one or two 120r crank failures, but not on a stock 120r motor.

My 120r motor is far from stock, and has accumulated over 15K miles - some of those miles were pretty harsh - and my crank runout is exactly what it was brand new - about .0008.

That must be a smooth motor with that runout.

[GMR-PERFORMANCE]

I did not read anywhere that he had a issue with the crank. Let the OP post up why he did what he did.  The crank in stock form would have been fine.

[07CVO.RK]

Who is doing the crank work?

Revolution Performance. Just got it back today.

[CVO2FIXUP]

 What's happening with your build? Is it running yet?  Any snags? Any Picks? Any burn outs? Any dino charts?

[07CVO.RK]

What's happening with your build? Is it running yet?  Any snags? Any Picks? Any burn outs? Any dino charts?

The motor will not be going into the bike until mid January for a couple reasons. The independent mechanic doing the work is extremely busy and also it is mid winter up here (we have received more than 3 ft of snow so far) and there is no rush. I will not have any dyno numbers until the snow is gone in April.

[geezerglide]

Just curious, who is the independent doing the engine build.

Just like you I shovelled two days of snow out of my driveway today, in Calgary the wind piled the drifts quite high.

geezerglide,

[07CVO.RK]

Just curious, who is the independent doing the engine build.

Just like you I shovelled two days of snow out of my driveway today, in Calgary the wind piled the drifts quite high.

geezerglide,

Hillbilly Cycle in Caroline, AB. He used to do all the engine/dyno work at Gasoline Alley HD in Red Deer. Went on his own about a year ago.

[geezerglide]

is that not Doug Mackenzie, haven't seen for a few years, ran into him at the Red Deer Swap Meet in October?

geezerglide

[07CVO.RK]

is that not Doug Mackenzie, haven't seen for a few years, ran into him at the Red Deer Swap Meet in October?

geezerglide

No. Doug has his own shop in Innisfail. This is Darren. Also known as Hillbilly.

[geezerglide]

Now I remember Darren (Hillbilly) running the Dyno at Gasoline Alley, I actually saw him also at the Red Deer Swap Meet. Do you know Steve Schultz (Rig Manager for Shell) from Red Deer, also on this website as BUNGY?

geezerglide