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Engine Specific Info and Questions => IDI Engine => Topic started by: oblique on February 06, 2023, 09:10:56 pm

Title: 1.6 timing belt break results
Post by: oblique on February 06, 2023, 09:10:56 pm

Some of you may remember my belt breaking shortly after picking the car up halfway across the country. Anyway finally tore into the old head. Dont mind the knife marks on the head body, they're mine from scraping away aluminum to get the bucket out...it was smushed down into the hole.

#2 cyl exhaust valve that hit (w masking tape) only measures 0.05mm shorter than others but this could be the carbon deposits flattening out against the piston. All in all, it's doesn't seem catastrophic...i cant find any indication on the cam either.

I found a broken spring in #3 cylinder I think it was...unrelated?

Also this appears to be an NA head, the precups are the smaller size ive found on 2 other NA heads.

Anyway some photos:

(https://i.ibb.co/SBs7dWj/20230206-204004.jpg) (https://ibb.co/SBs7dWj) (https://i.ibb.co/VxwksK6/20230206-213053.jpg) (https://ibb.co/VxwksK6) (https://i.ibb.co/8MhMggP/20230206-213315.jpg) (https://ibb.co/8MhMggP) (https://i.ibb.co/fxQt64c/20230206-213622.jpg) (https://ibb.co/fxQt64c) (https://i.ibb.co/RP8KjPQ/20230206-213639.jpg) (https://ibb.co/RP8KjPQ)

Title: Re: 1.6 timing belt break results
Post by: fatmobile on February 07, 2023, 01:44:37 am

TD prechambers usually have a triangle or circle on the face of them.

Title: Re: 1.6 timing belt break results
Post by: oblique on February 07, 2023, 07:53:58 pm

Hmmm all my NA hydro heads have the same precups (3 heads), non-magnetic:

(https://i.ibb.co/6BqbgFL/20230207-195807.jpg) (https://ibb.co/6BqbgFL)

It seems like more VW shenanigans changing things up whenever through production runs:

https://vwdiesel.net/forum/index.php/topic,33184.0.html