VWDiesel.net The IDI, TDI, and mTDI source.

Engine Specific Info and Questions => IDI Engine => Topic started by: mtrans on August 04, 2010, 06:31:45 am

Title: dial indicator-why
Post by: mtrans on August 04, 2010, 06:31:45 am

Lastly I purchase,but when I Turn engine counterclockwise until dial stops (get 0.95mm) Zero gauge Turn
engine slowly back to TDC I get 1.12mm.Why is that difference, Is that only me,and 1.12 is important namber we look for right?of corse 1.12 is too advanced.Best

Title: Re: dial indicator-why
Post by: burn_your_money on August 04, 2010, 08:19:54 am

It's the slack in the belt. What you are demonstrating is the importance of going back at least 1 compression stroke before going clockwise to take a reading or to check your timing marks. Or just always go clockwise and you won't need to worry about that.

Title: Re: dial indicator-why
Post by: Baron VonZeppelin on August 04, 2010, 09:27:40 am

Sometimes too, you need to push the dial stem downward once you've stopped rotating engine to make sure it has full contact.

I do that to the dial stem at every checkpoint.

Title: Re: dial indicator-why
Post by: mtrans on August 05, 2010, 12:10:01 pm

thanks guys