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[KEB]

My 110 had to have a replacement crank due to the runout so doing some mild improvements. The head will get better valves, springs, a tidy-up, ceramic coated etc and increase the compression to maybe 9.5:1. Looking to put a S&S 570 cam or possibly an S&S 585.

The questions are: is there any issues with lifter or cam clearances to the lifter "block" for that sized cam?

KB

[prodrag1320]

the .570`s will want 10.0-1 and the 585`s will want 10.5-1.im hoping to had the new crank plugged & welded,or its most likely just going to happen again

[KEB]

Hmmm yes I thought that the 585 would be too much cam.

[ltank]

I saw a S&S video by S&S about their 3 piece cranks and welding them gave very little advantage. They had one side of crank secured to a table and a 20 foot extention and torque wrench to see what it took to make them shift. They even compared the 5 piece cranks. Three part video on UTUBE

[KEB]

The new crank will be welded and plugged. Probably go for the andrews 57h cam instead. Was thinking about that one.

[prodrag1320]

I saw a S&S video by S&S about their 3 piece cranks and welding them gave very little advantage. They had one side of crank secured to a table and a 20 foot extention and torque wrench to see what it took to make them shift. They even compared the 5 piece cranks. Three part video on UTUBE

I wasn't referring to the new S&S cranks,they need nothing additional.i was talking stock HD cranks

[HILLSIDECYCLE.COM]

My 110 had to have a replacement crank due to the runout so doing some mild improvements. The head will get better valves, springs, a tidy-up, ceramic coated etc and increase the compression to maybe 9.5:1. Looking to put a S&S 570 cam or possibly an S&S 585.

The questions are: is there any issues with lifter or cam clearances to the lifter "block" for that sized cam?

KB

Set it at 10.0 cr with those .570's.
Scott

[FlaHeatWave]

The new crank will be welded and plugged. Probably go for the andrews 57h cam instead. Was thinking about that one.

How many miles on the original crank??

You might consider saving yourself some time / money and go with the S&S Crank, it has more (caged)rollers.

[INDEPENDENT_1]

I wouldn't waste the money on welding, truing, plugging or anything other than box stock crank if all the power you're looking for can be accomished with an Andrews 57H cam. IMO that would be something akin to buying a submarine and then putting screen doors on it. It seems as if you're building the motor backwards. By that I mean it seems like you are setting the static compression and then selecting a cam rather than selecting the cam first based on where you want the sweet spot of the torque (along with how much of it you want) and then setting compression to optimize the cam that suites the rpm range you appreciate/utilize most. Static compression is really irrelevant in the real world when running pump gas and driven on the street. Building a motor around dynamic compression is a more sensible approach.

[Snakebyte]

I wouldn't waste the money on welding, truing, plugging or anything other than box stock crank if all the power you're looking for can be accomished with an Andrews 57H cam. IMO that would be something akin to buying a submarine and then putting screen doors on it. It seems as if you're building the motor backwards. By that I mean it seems like you are setting the static compression and then selecting a cam rather than selecting the cam first based on where you want the sweet spot of the torque (along with how much of it you want) and then setting compression to optimize the cam that suites the rpm range you appreciate/utilize most. Static compression is really irrelevant in the real world when running pump gas and driven on the street. Building a motor around dynamic compression is a more sensible approach.

I agree

[prodrag1320]

I wouldn't waste the money on welding, truing, plugging or anything other than box stock crank if all the power you're looking for can be accomished with an Andrews 57H cam. IMO that would be something akin to buying a submarine and then putting screen doors on it. It seems as if you're building the motor backwards. By that I mean it seems like you are setting the static compression and then selecting a cam rather than selecting the cam first based on where you want the sweet spot of the torque (along with how much of it you want) and then setting compression to optimize the cam that suites the rpm range you appreciate/utilize most. Static compression is really irrelevant in the real world when running pump gas and driven on the street. Building a motor around dynamic compression is a more sensible approach.

I agree with your compression & building a motor points.but not with the plug & weld part,he twisted the stock crank with stock power didn't he?we`ve seen a fair amount of stock 96"ers twist or knock the cranks out of true

[INDEPENDENT_1]

I understand where you're coming from, Kirby, but... every once in a while there's a blue moon in the sky or a white buffalo is born. I don't see anywhere that it's been posted in the thread whether or not its possible the crank came from the factory with the problem. Is it possible the OP had to make a quick, unexpected stop and stomped the rear brake without pulling in the clutch first? Is it possible a tech that services the bike launched the owners bike at 5 grand and then stomped on the rear brake without pulling the clutch in? Again, I understand where you're coming from but respectfully, I think it would be a waste of money to do flywheel work of ann the OP is wanting it the power a Andrews 57H is capable of making unless he is riding it in an abusive way described above and if that is the case, I'd think he'd appreciate more compression, a bigger cam and perhaps an S&S flywheel set and Timken bearing upgrade.

To the OP, I don't usually disagree with a lot of the pro's here. Can you give us more details on how this happened and your riding style? Seems like the static compression you want is near the extreme side of mild while one of the cams you've mentioned using is better suited for 10.5-10.8:1 compression (S&S 585's). That is a far cry from 9.5 static compression. I've tuned motors that were running 9.5 dynamic compression which is entirely different than 9.5 static compression. Kirby did not start doing this last night so I would be willing to bet he and I would probably be in agreement on how this motor needs to be setup if we had a few more details about your riding style. Nothing wrong with launching hard and that would validate crank work but I would never consider locking up the rear tire at cruising speed without pulling in the clutch. Sometimes it happens if in an emergency stop situations... say when a white buffalo runs out in front of you on the freeway and I'm not a gambling man it I would take my chances on that happening and I would take my chances on stock flywheels with Andrews 57H cams paired with stock flywheels if it is ridden like most people running those cams ride. JMO.

[HILLSIDECYCLE.COM]

We see fairly low mileage OE engines that HAD to have been assembled with the crank r/o we witness when in there.
IF it moves from there, is the real concern.
We record the TIR on each work order for our clients records.
Scott

[KEB]

I wouldn't waste the money on welding, truing, plugging or anything other than box stock crank if all the power you're looking for can be accomished with an Andrews 57H cam. IMO that would be something akin to buying a submarine and then putting screen doors on it. It seems as if you're building the motor backwards. By that I mean it seems like you are setting the static compression and then selecting a cam rather than selecting the cam first based on where you want the sweet spot of the torque (along with how much of it you want) and then setting compression to optimize the cam that suites the rpm range you appreciate/utilize most. Static compression is really irrelevant in the real world when running pump gas and driven on the street. Building a motor around dynamic compression is a more sensible approach.

Unfortunately I am limited to what the engine builder is dictating a bit. As for the crank, the standard crank with a standard cam is .030 out. So if that can happen with a standard crank and I put it back the way it was how long before I'm up for another engine rebuild regardless of how much power it produces?? Better off buying a Yamaha or a Victory than a twin cam with a standard crankshaft without doing at least something to stop it twisting...

[KEB]

I understand where you're coming from, Kirby, but... every once in a while there's a blue moon in the sky or a white buffalo is born. I don't see anywhere that it's been posted in the thread whether or not its possible the crank came from the factory with the problem. Is it possible the OP had to make a quick, unexpected stop and stomped the rear brake without pulling in the clutch first? Is it possible a tech that services the bike launched the owners bike at 5 grand and then stomped on the rear brake without pulling the clutch in? Again, I understand where you're coming from but respectfully, I think it would be a waste of money to do flywheel work of ann the OP is wanting it the power a Andrews 57H is capable of making unless he is riding it in an abusive way described above and if that is the case, I'd think he'd appreciate more compression, a bigger cam and perhaps an S&S flywheel set and Timken bearing upgrade.

To the OP, I don't usually disagree with a lot of the pro's here. Can you give us more details on how this happened and your riding style? Seems like the static compression you want is near the extreme side of mild while one of the cams you've mentioned using is better suited for 10.5-10.8:1 compression (S&S 585's). That is a far cry from 9.5 static compression. I've tuned motors that were running 9.5 dynamic compression which is entirely different than 9.5 static compression. Kirby did not start doing this last night so I would be willing to bet he and I would probably be in agreement on how this motor needs to be setup if we had a few more details about your riding style. Nothing wrong with launching hard and that would validate crank work but I would never consider locking up the rear tire at cruising speed without pulling in the clutch. Sometimes it happens if in an emergency stop situations... say when a white buffalo runs out in front of you on the freeway and I'm not a gambling man it I would take my chances on that happening and I would take my chances on stock flywheels with Andrews 57H cams paired with stock flywheels if it is ridden like most people running those cams ride. JMO.

the crank was out of true when I bought it. I ride it like I stole it.