M8 Pinging / Detonation Sounds ?

[HV]

May have been talked about in the past but I havent seen it....




Any one having Issues with M8s Pinging noises around 3000 Roll on ?  Got one Trike and a Street Glide doing it....both 18s ....HD is scratching their Heads.....talked to 3 Different Guys at the Mothership so far ......done a $hit load of tests ...they are down to adding Octane Boost ......FFS they are brand new Bikes ! ...Ya a Customer is going to want to carry a can of Boost with him all over the Country 

[Don D]

Local guy here complains about the same on his 17 trike. He also says it is dead out of the hole. 100% stock

[HV]

Its pulling almost 5 Degrees out of the rear at times .....somethings not good.....

[RXBOB]

My 17 RG was pinging I put on a PV did some data logging pulled some timing in identified areas smoothed out the timing and its sweet

I would imagine that any half descent Dyno operator should be able to sort it out

[HV]

My 17 RG was pinging I put on a PV did some data logging pulled some timing in identified areas smoothed out the timing and its sweet

I would imagine that any half descent Dyno operator should be able to sort it out

Not on a Brand New Bike ..... using only the HD Digital Tech Software 

[Sunny Jim]

They will pull timing as the engine gets hot.

[Geezer_Glider]

Interesting. I've put 13K miles on my 17 Ultra, all running 87 octane swamp swill. Only get a momentary rattle if I crowd it real low rpm (<1600) in a too high of gear by accident. Nothing at 3K rpm, even snapped open at 3K in 6th. Will be interesting to hear what is found. Engine has been running good, 45mpg on average, stone stock except breathers to a catch can.
Just saying,
R Meyer

[thunderrat]

I demo'd a 2018 Heritage at Tomahawk in September. They always have a nice self-guided route where you can twist the throttle if you want.  That bike ran like    detonated like crazy when I got on it.  The two other 18's I rode did not do that and ran ok.

[Bike31]

I demo'd a 2018 Heritage at Tomahawk in September. They always have a nice self-guided route where you can twist the throttle if you want.  That bike ran like    detonated like crazy when I got on it.  The two other 18's I rode did not do that and ran ok.

What engines were they...107 or 114?

[RXBOB]

My 17 RG was pinging I put on a PV did some data logging pulled some timing in identified areas smoothed out the timing and its sweet

I would imagine that any half descent Dyno operator should be able to sort it out

Not on a Brand New Bike ..... using only the HD Digital Tech Software 

Didn't have that problem here down under at my dyno Operator

[HV]

My 17 RG was pinging I put on a PV did some data logging pulled some timing in identified areas smoothed out the timing and its sweet

I would imagine that any half descent Dyno operator should be able to sort it out

Not on a Brand New Bike ..... using only the HD Digital Tech Software 

Didn't have that problem here down under at my dyno Operator

What I ment was we have no way of tuning a Bike using the Harley Computer ......you would need a Tuner of some kind ....PV SERT Etc ...these are new bikes with no tuners ...

[BVHOG]

Interesting, I will be tuning an 18 trike this weekend and will be watching for detonation etc, awfully cool here to not sure if it's a legit test or not.

[HV]

Was a bit cool here too ....so should be close....be interesting to see for sure

[BVHOG]

Was a bit cool here too ....so should be close....be interesting to see for sure

I pulled the factory cal with PV, will take a close look at the stock timing tables.

[HV]

Check around 3000 ....if you roll on...then off ...then Hit it at just below 3000 it will start

[1FSTRK]

There is a learning curve with dual plugs.

[thunderrat]

"What engines were they...107 or 114? "

They were all 107's

[Pirsch Fire Wagon]

Both the 107 and 114's have Knock Sensors. Perhaps something is defective?

[HV]

Update........after doing a lot of runs and saving them to the DT...we went through every reading we could find......Called the Factory a lot of times...sent them recordings...their answer /   Rider is not riding it properly..lol WTF .....I finally found the rear knock sensor had 0 Volts running......called the factory back told them to look at that part of the recordings....." OH thats not correct "   FFS   no $hit.....now the cold has set in...new Knock sensor back ordered....so it will be spring now before we see it that was the issue 

[harley_cruiser]

Update........after doing a lot of runs and saving them to the DT...we went through every reading we could find......Called the Factory a lot of times...sent them recordings...their answer /  Rider is not riding it properly..lol WTF .....I finally found the rear knock sensor had 0 Volts running......called the factory back told them to look at that part of the recordings....." OH thats not correct "   FFS   no $hit.....now the cold has set in...new Knock sensor back ordered....so it will be spring now before we see it that was the issue 

Why is it always my fault

[Bike31]

Update........after doing a lot of runs and saving them to the DT...we went through every reading we could find......Called the Factory a lot of times...sent them recordings...their answer /   Rider is not riding it properly..lol WTF .....I finally found the rear knock sensor had 0 Volts running......called the factory back told them to look at that part of the recordings....." OH thats not correct "   FFS   no $hit.....now the cold has set in...new Knock sensor back ordered....so it will be spring now before we see it that was the issue 

Was the factory voice Paki or Indian?

[HV]

Good old USA .....

[SLAATY]

HV, been following your thread w/interest. With KS's there shouldn't be any more than temporary knock, obviously. It's strange that these are back ordered?? With GM, if it was a new vehicle down they'd pull parts off the line.

Might be interesting to see if KS's now have an 'A' designation...

[HV]

Because this is now our Fall/Winter time...the Bikes are away till spring...so the MOCO likely sees to rush to send us parts......FYI we also have a Demo Bike that a customer reported pinging too.....its also stored so I cant even check the Voltages on it till Spring....all on Hold for now 

[Moparnut72]

If KD4's are on back order how in the hell are they building new bikes. Leaving them off?
Zkk