Quote:
Originally Posted by afterburn 549
The Post was deleted as by your observation and wisdom it was out of context.
I just post facts Jeff.
Ask ANY knowledgeable shop and you will quickly learn some things!..
Carry on and think what you want.
The Twinks are famous for cam and out-of-phase flywheels.
Where do you think "welded flywheels" came from?
Several companies make their living from this congenital problem. (Call Dark horse ) https://darkhorsemoco.com/
Argue with yourself.
I am done.
Luv them if you want, IDC
https://riderhow.com/engine-problems-harley-davidson-88-107-110-114/ |
No wonder you are confused. The link you provide right here pretty much says it all regarding those who you trust for their technical expertise. There are some real gems contained in that link, here are some of the highlights. Direct copy and paste from your provided link:
Inadequate Cam Chain Tensioners
The plastic cam chain tensioners can’t take as much stress from the pinion shafts.
They require regular inspections and need to be frequently changed every few miles.
If they disintegrate from weariness, the metal-to-metal contact in the shaft will generate heat issues and subsequent engine failure.
"Disintegrate from weariness???"
Unreliable Crankshaft
The pressed-up crankshafts were one of the biggest issues with the Twin cams.
Harley assembled the engine models in this manner to reduce the production costs back in ’98.
Users discovered that the pressed-up crank resulted in complete engine breakdown in less than 2000-3000 miles.
Especially if you were riding fast and hot.
Essentially, the spline shaft from the back would force down on the left flywheel, causing misalignment.
The misaligned flywheel would then shift or even bend the crankpin, causing engine failure.
Most Possible Solutions?
If the crankpin shifts or breaks off, it can tear off the entire cam system.
The broken parts will circulate through the system, and do more damage to the healthy body parts.
Hence, the primary solution is to locate the broken pin and remove it completely.
Multiple mechanical experts suggest replacing the unreliable crankshaft altogether.
You can escape both crankshaft and tensioner issues with an upgraded and balanced Harley 88.
Wow - total engine failure in 2,000-3,000 miles? Yup, best to "locate and remove it completely" before it can "do more damage to the healthy body parts". And you believe this nonsense.
Loose Pistons
The powerful M8 engine can render the pistons very loose when revs get too intense.
The metal-to-metal friction between the loose pistons can contribute to heating issues.
I bet metal to metal friction between loose pistons
would actually create some issues.
Most Possible Solutions?
The major heating issues have since been resolved by Harley in the newer models.
Anything from 2009 and up shouldn’t have any significant heating problems.
Different specialists suggest removing the stock head pipe and placing a catless pipe instead for better circulation of air.
Not sure what to even say about that one. But, well this one takes the cake:
Slow Starting
The engine, despite being in pristine condition, can take a long time to start, especially in low temperatures.
Under 50-60° F, the charged battery takes longer to heat up the engine, which contributes to the slow response.
Do you even read the nonsense you link? Apparently not. Not only did you fail to notice (or at least acknowledge) that in your very own links they say that the crankshaft clocking issue is restricted to hot-rodded motors (I pointed this out right away above), you apparently missed this, from one of the first links you posted, in its Frequently asked questions, down towards the end:
https://theseasonedwrench.com/is-the-twin-cam-96-a-good-motor/
Is the Twin Cam 96 a reliable motor?
Yes, the Twin Cam 96 has a reputation for reliability and longevity, especially when properly maintained. Regular servicing and using quality parts and fluids can contribute to the engine’s durability and performance.
Nowhere do any of your assertions contain any measure of frequency of occurrence. Every other one? One in ten? One in one hundred? One in a million? Nothing. Nada. Zilch.
In conclusion, every mechanical object is going to have some failure rate. Everything. The fact that there are millions of TC bikes out there, manufactured from 1999 through 2017 that have never experienced the dire failure modes you breathlessly try to warn against is completely lost on you. And their continued reliability just makes you sound like a shrill old fool.