If you have balanced a wheel you will know they are not perfectly balanced they just get close and are not dampened that was the point there. Until you have gone to UTI or gone through MINI mechanic training you can see why I find you hard to believe.

 

I never asked you to believe me. Like you I stated my opinion.

 

How does that contradict the point? When the point is that not everything MINI decided to put on your car was in the interest of a well running long lasting vehicle. The carbon build up and HPFP on the r56 are proof of that as is the belt tensioner assembly on the r53. It would seem almost by what your recently saying that the only good mini is a stock MINI because you don't want to change the stresses put on the engine by the factory. I suppose you are against supercharger pulleys as well since they aren't dampened and by spinning the blower faster you are reducing its useful life.

 

you win I'm done

 

I' m not.
Listen....ever noitce how folks looking LONG TERM ON KEEPING their mini weigh pro's and cons more, and $$ saved less....
The $$ save from running a undampend crank is so small, about 200$, compared to about $2500-5500 for a motor.....nuff said.
You can get more power out of a car if it has sufficent margins from an enginnering standpoint, and that is where gen1 cars are great!! Stronger motors than they need to be for stock, so lots of playroom....but there are basic limits...
Crankshaft length and accories are the main factor in harmonic vibrations...things most motorcyles do not deal with...add accories on a belt....
I can tell you, many multi million dollar turbine engines have speeds you do not, ever, matain a steady rpm at, or vibrations, aka harmonics, can resonate, and cause bearing failure....boom. period. If an engineer ssys it is 100% needed on a mini, and the oem spend decent $$ to add a damper, lowerig profit margins, and increasing chances of a different item failing to prevent a full blown failure, why would you not believe them. Maybe most folks are lucky and just acclerate THROUGH the rpm range the engineer determined was the DANGERZONE, but without KNOWING what rpm it is...it is like russuan roulette.......
harmonics can a do dammage rotating items. Believe me. Just having been "SCHOOLED" IN REPAIR does not make you an engineer!!! You can guess the intent of tge guy with the suit on with the computer, but you still are an assembler, a matainer, and a fixer.....
and if say you have "built" motors, unless you have fone a clean sheet desgin, it is called assembling parts.....

 

Zippy it is a losing battle. His friend went to assembly school and knows more then the engineers and designers. Thats I why I say he wins. LMAO. But Zippy thx for helping out in this losing battle. LOL

 

It's the people who do the repairs that find what the computer model missed hence why updated parts exist. Engineers have made major mistakes throughout history. Things like the Tacoma narrows bridge and many vehicle recalls as well as thousands of other examples prove engineers don't know everything and can easily make mistakes or have overlooked something.

 

I have run my alta crank pulley for months under hard load. Yes there is a vibration on low rpm 1k-2k , you can hear them from the pulleys part. But that is caused by the tensioner. Put on an adjustable tensioner without the hydraulic and there was no vibration since then. Alta and those that doesnt have a damper are lightweights and thats why i picked them up. My car have 149k mileage and runs great. I believe i ran 30+k with the pulley because i had 3 service every 10k since the pulley was installed.

 

Good luck with that.

 

For those that want to listen:

"The basic engine for the Mini One and the Mini Cooper is fitted with a conventional torsional vibration damper at the front end of the crankshaft. Calculations and measurements showed that the addition of the supercharger with its relatively high moment of inertia was resulting in excessive torsional vibration at about 1600 rpm. This solution was unacceptable both acoustically and in terms of component strength.

The torsional vibration damper used on the Mini Cooper S engine therefore has the belt pulley additionally isolated elastically from the secondary mass, with belt drive vibration damping. Vibration amplitudes are significantly reduced by the isolated belt pulley. However, the decisive factor is that the most marked resonance is shifted into a zone below idle speed and is therefore outside the engine's operating range, Figure 1."

Here is the whole article.
http://new.minimania.com/article/220...r_S_Powertrain