Tension in TB

[Kaz-kzukNA1]

Not sure you have seen these photos so I'm going to post them in a hope to assist you.

I can't provide exact weight force data against the TB but when the TB tension is properly adjusted and if applied very gentle pressure with just one finger while at #1 TDC, you will see 10mm movement from rest point in both ways like these photos.

Good luck.


Kaz

[duncan]

Thanks for the comments and support.
For my clarity: tensioning (whether blue mark or 9 teeth) is with set valve clearances so a tension against valve springs only, the plugs out so no compression from the cylinder.

[ozon02]

Thank you Kaz that you shared your practical knowledge. These information could be found reading the blog but here are dispelled my" doubts with 5 mm pin punches". I am during the Engine Refresh (according to your recommendations) which I Barn find in Germany.

sorry for english i use a translator

[goldnsx]

Thanks for all the additional info!

One question: is the +-10mm slack at 6 right after removing the slack at 1-5 or after that?

and please remember, only a few selected engineers were allowed to build your NSX engines.

If I imagine the average mechanic in Europe handling that procedure who might sees an NSX every 5 years or less...at least there are no known/heard of fatal failures. So there is some safety margin in there as well.

[Kaz-kzukNA1]

The measurement is always taken after the tension adjuster bolt locked with 9 cam teeth method and crank turned several times.
After this, set at #1TDC and while keeping the crank locked, measurement taken.


Kaz