My buddies harley truck dyno

[britincali]

Dont play, if you cant pay.
.

Agreed 100% I still feel really sorry for him tho

[Blusmbl]

That looks much more like an issue of too much timing for the fuel he was running.

As a general rule, a lean tune will torch the center out of a piston, while a rich one, or detonation, will attack the ring land area first. The ground strap on the plug being damaged is one clue for detonation as well.

Hopefully your buddy gets some resolution from the shop who tuned it for him.

[AlisoBob]

... detonation will attack the ring land area first.

Yup....

Brit said the motor is so mechanically "noisy"..knock sensors dont work...

[britincali]

They can detonate from to much timing, bad gas, or being to lean

I think it was the first that did the damage



The motors are equipped with knock sensors but something to do with the pitch of the blower whine trips them off all the time, so they are disabled in the stock computor.

[dannygraves]

I shattered a ring land on a hyper-u piston from too much timing on too low octane running too much boost! I was totally working that z06 until the smoke...
yeah, a lot of people forget about timing and pump gas and try to max out the timing and rely on knock sensors. I didn't have a knock sensor setup for my SDS setup, I have ears after all and if your at risk of pinging, your running too much advance for your octane level anyway.

[AlisoBob]

Ford Lighting powered tractor...

[dannygraves]

HAHAHAHAH
that motor REALLY blew up!