measuring crank ro : V-Twin Forum: Harley Davidson Forums

dirtydon · 08-20-2009, 10:22 AM

ordered fueling ro plate. when measuring do you need to pull the comp and clutch before measuring? 2003 police special.cam plate bolts backed off,wore the bolt holes in the plate,replacing with se plate and 07 style pump hyd tensioners,pulled lifters apart they are clean,pulled pan to look for metal,clean,will be pulling heads to look inside also.friends bike doesn't won't to go hipo yet.to bad be easy now ,thanks for help,dirtydon

rob71458 · 08-20-2009, 10:51 AM

You measure the cam side.

dirtydon · 08-20-2009, 12:09 PM

thanks ,but thats where the plate from fueling goes with the dail indicator, do i need to take the comp and clutch basket off to relieve the weight from the left side or can i leave it on? engine is in frame

Mtclassic · 08-20-2009, 12:36 PM

no leave the comp/clutch on.

dirtydon · 08-20-2009, 05:26 PM

thanks was not sure.will post back with results

dirtydon · 08-24-2009, 11:04 PM

back again,can plate bolts were all loose when opened up,two were in the bottom of the case upper left bolt grinding in the front cam chain,all the bolt holes in the plate egg shaped,oil pump done.pulled pan,lifters,rocker covers heads,all clean no metal any where.bike broke 2 blocks from my house(freinds bike,trying to get it back for him)with fuelng RO plate measured 38, spec from fueling (for built motors)25.heavy scaring on crank end,crank gear feels loose (normal?)thinking oh ****!any words of help,thanks dirtydon

Coolmaker · 08-25-2009, 12:33 AM

Quote:

Originally Posted by dirtydon

back again,can plate bolts were all loose when opened up,two were in the bottom of the case upper left bolt grinding in the front cam chain,all the bolt holes in the plate egg shaped,oil pump done.pulled pan,lifters,rocker covers heads,all clean no metal any where.bike broke 2 blocks from my house(freinds bike,trying to get it back for him)with fuelng RO plate measured 38, spec from fueling (for built motors)25.heavy scaring on crank end,crank gear feels loose (normal?)thinking oh ****!any words of help,thanks dirtydon

New crank from Darkhorse... Ask John....

jerry34208 · 08-25-2009, 07:54 AM

Measure with the cam plate removed.
You saying you have .038" of runout?
If so, you have to repair or replace that crank.
If you meant .0038" then you are ok as far as runout is concerned.
The scarring on the crank may require the crank be removed and be sent to a place like Darkhorse or Hyperformance. They both can work that crank to better than new condition.
Not sure what you tell you on the loose crank gear other than it is not a press fit anyway.
A guy would have to feel how loose yours is to know if there is a problem.

Sounds to me like you could bolt some new parts on and go riding for a while but this is going to haunt the owner without being addressed properly.

dirtydon · 08-25-2009, 04:32 PM

thanks all. measure was .0038.when i pulled the rocker covers and the breathers there where no filter elements inside,no locktight on the camplate bolts either.ex police bike bought from a dealer.seems the cam bearings might have been changed before my buddy bought it. the scaring seems more like the cam plates bushing was rubbing on it while the plate was loose,need to get specs on end of crank and check with a mic.again thanks for the help.this bike is not riden hard as the owner has a weak left arm(stroke).installed auto clutch,seems to work good for him,just trying to get him back in the wind

jerry34208 · 08-25-2009, 10:40 PM

A billet cam plate with the upgraded oil pump would be good insurance. The bearings on the outer end of the shaft and can control that 0.0038 runout just fine. Replace lifters etc. and all is good. Might think about a new set of cam bearings as long as you're in there. I wouldn't worry too much about 0.0038" of runout on a chain driven cam though.