please help!!!!!!!!!!!!!
Dont keep it at a constant rpm during brake in...aslo hold you hand on motor and dont ride until you feel the heat in top of motor,, this will save the base gaskets..
Springer
texashogtrailz.com
If the noise is from the valve train, you may be able to minimze by re-adjusting valves.
Like for example if you went from 9-1 flat top pistons to 10:5-1 piston and was running re unleaded you would hear a ping ping and would need to go up in octane to stop the ping ping.. There is really no way to know what you are hearing until i hear it or you go let someone that knows hear it and i dont mean take it to Harley cause they dont know much of anything i would take it to the machine shop you had the work done and let them listen..
Also everyone has an opion right or wrong and if the motor sounded the same at 100 miles or 1000s or 20000 miles then why does a new motor sound so crisp and tight at first star up!!!!
But you just spent alo of money and dont want it to be wasted so my first ride or trailor trip would be to someone who know for sure!!!!!
Like for example if you went from 9-1 flat top pistons to 10:5-1 piston and was running re unleaded you would hear a ping ping and would need to go up in octane to stop the ping ping.. There is really no way to know what you are hearing until i hear it or you go let someone that knows hear it and i dont mean take it to Harley cause they dont know much of anything i would take it to the machine shop you had the work done and let them listen..
Also everyone has an opion right or wrong and if the motor sounded the same at 100 miles or 1000s or 20000 miles then why does a new motor sound so crisp and tight at first star up!!!! But you just spent alo of money and dont want it to be wasted so my first ride or trailor trip would be to someone who know for sure!!!!!
KB pistons are hypereutectic; so are the H-D cast pistons which the OP is running and should have been setup at .0006"-.0015"; so no difference. The pistons don't "break in", the rings do. Forged pistons can be setup somewhere between .002"-.004" and can make a more noise on start up than cast but the noise usually goes away as the components heat up and expand.
I have never heard a "tight" engine make noise, other than the normal valve train noise that a push rod engine makes. Loose engines make noise, not tight ones.
Going from a 9.0 flat top piston to a 10.5 domed piston does not necessarily result in a detonating engine. Detonation can be the result of a poor tune, wide open squish band all accompanied by high corrected compression; static CR is not an indicator that the engine will be prone to detonation.
I do agree that engine noise is impossible to diagnose via the internet; it is hard enough to diagnose when standing right next to the noisy engine. Engine noise is subjective; what is annoying to one is unheard by another, or heard but ignored.
A new motor sounds crisp and tight because it is a new motor; however, it will also sound that way 5000 miles or 10000 miles later. Take a TC88 apart that has been well maintained and not abused after 25K miles and you will see the coating on the pistons unscathed and the factory hone cross hatch still intact. The engines just don't wear fast enough to open up factory tolerances to the point of becoming noisy until many more miles are rolled up.
KB pistons are hypereutectic; so are the H-D cast pistons which the OP is running and should have been setup at .0006"-.0015"; so no difference. The pistons don't "break in", the rings do. Forged pistons can be setup somewhere between .002"-.004" and can make a more noise on start up than cast but the noise usually goes away as the components heat up and expand.
I have never heard a "tight" engine make noise, other than the normal valve train noise that a push rod engine makes. Loose engines make noise, not tight ones.
Going from a 9.0 flat top piston to a 10.5 domed piston does not necessarily result in a detonating engine. Detonation can be the result of a poor tune, wide open squish band all accompanied by high corrected compression; static CR is not an indicator that the engine will be prone to detonation.
I do agree that engine noise is impossible to diagnose via the internet; it is hard enough to diagnose when standing right next to the noisy engine. Engine noise is subjective; what is annoying to one is unheard by another, or heard but ignored.
A new motor sounds crisp and tight because it is a new motor; however, it will also sound that way 5000 miles or 10000 miles later. Take a TC88 apart that has been well maintained and not abused after 25K miles and you will see the coating on the pistons unscathed and the factory hone cross hatch still intact. The engines just don't wear fast enough to open up factory tolerances to the point of becoming noisy until many more miles are rolled up.
But at the end of the day,,nothing sound better then a new motor the first time it starts an if he is hear large noise it time to let some one listen to it or for the sake of this argument down load it running and let listen..
The thing about all this as it has opened up good conversation...
But like i said before an it is the only thing we all agree on is that you have spent your hard earn money and you will be riding out far in close and dont want to have to stop cause you didnt let someone else listen to it....
Springer..
O and as far as the 10:1-5 not pinging,,come to Texas ride on our fuel in summer an tell me after you stop for a beer and get back on an it is pinging im not right...
The Best of Harley-Davidson for Lifelong Riders
But at the end of the day,,nothing sound better then a new motor the first time it starts an if he is hear large noise it time to let some one listen to it or for the sake of this argument down load it running and let listen..
The thing about all this as it has opened up good conversation...
But like i said before an it is the only thing we all agree on is that you have spent your hard earn money and you will be riding out far in close and dont want to have to stop cause you didnt let someone else listen to it....
Springer..
O and as far as the 10:1-5 not pinging,,come to Texas ride on our fuel in summer an tell me after you stop for a beer and get back on an it is pinging im not right...
BTW, I also live/ride in Texas and rolled up 300 miles today; filled up twice and, guess what, no ping! You still don't get that static CR of 10.5:1 does not mean a build will ping. Static CR is a mathematical calculation; the engine never sees static CR. The engine sees corrected (dynamic) and cranking compression.
This is entertaining and I would love to continue but I can see it would be a waste of time. However, I will be listening to my engine for a jug jug or a louk louk; could be bad juju.







