617 '05' Camshaft Specifications:

[Doktor Bert]

According to the MBZ Reference Guide, this (05) camshaft should be installed to the following specifications @ 2mm valve lift:

Intake Opens 9° ATDC

Intake Closes 15° ABDC

Exhaust Opens 27° BBDC

Exhaust Closes 18° BTDC


Since I plot the valve events of every lobe before installation, I felt oblidged to provide you with the following information. All values are with camshaft installed at a theoretic 'zero' position on the stock timing marks:

Valve Overalp -27.0°

Intake Duration 186°

Exhaust Duration 189°

Intake Centerline 102°

Exhaust Centerline 112.5°

I did not record the lift figures, although each lobe was checked to ensure similar profiles.

Of interesting not, an increase of roughly .001" valve lash will retard the camshaft opening figure by approximately 2° overall.

I hope this information is helpful...Bert

[Doktor Bert]

I think the '05' Camshafts were a 1980-up article...Bert

[boneheaddoctor]

Cool...more info to file away for future reference......Thanks.

[Scull]

I was doing a search to find the camshaft timing for my 617 when I encountered this very useful thread. I have only two small clarifications to add to the provided specs:

Intake centerline is 102° ATDC
Exhaust centerline is 112.5° BTDC

[Doktor Bert]

Thanks for the clarification on the timing figures. I forgot to post that part...Bert

All that is very interesting, but camshaft timing has very little effect on much of anything in a diesel. In a gas engine, just a few degrees can cause drastic differences in engine behavior, but in a diesel the performance characteristics are determined by fuel delivery not camshaft timing.

Have a great day,