OT neighbor needed a Favor, New timing belts Options

[rfinegan]

Going to take a little break from the 914/ 2056 an install a pair of timing belts for a neighbors 944 (he has 3 cars) Im sure they all need doing too.
As they say...First taste is FREE. ;-)

[technicalninja]

928 was 7 hours for clutch
968 was 6.
944 Turbo was 21...
Why oh why does the installation of a turbocharger DOUBLE the clutch time?

Japanese timing belts last 150K +

German stuff half of that

Italian belts have to be changed at 30K...

A bunch of Japanese stuff is non-interference. I tell my customers it's OK to let it break!

I once personally lost a first gen MR2 t-belt at 8K rpm, no damage.

I have not seen German stuff that is non-interference and valves are always bent.

I once had a 944S4 that took EVERYTHING! It drove valves up into the cam box and broke both cams. One used engine was the fix.

Fiat spiders send the rear fuel pump lobe on the auxiliary shaft OUT the side of the block...

[wonkipop]

928 was 7 hours for clutch
968 was 6.
944 Turbo was 21...
Why oh why does the installation of a turbocharger DOUBLE the clutch time?

Japanese timing belts last 150K +

German stuff half of that

Italian belts have to be changed at 30K...

A bunch of Japanese stuff is non-interference. I tell my customers it's OK to let it break!

I once personally lost a first gen MR2 t-belt at 8K rpm, no damage.

I have not seen German stuff that is non-interference and valves are always bent.

I once had a 944S4 that took EVERYTHING! It drove valves up into the cam box and broke both cams. One used engine was the fix.

Fiat spiders send the rear fuel pump lobe on the auxiliary shaft OUT the side of the block...

fascinating info. (IMG:style_emoticons/default/sad.gif) (IMG:style_emoticons/default/smile.gif)
it helps to have a non interference engine. you can let it fail.
the japanese are smart in that respect.

renault dictate 4 years or 30,000k whichever comes first.
the one i just pulled on my 172 was 8 years, but only about 10,000k.
it seemed to be in perfect condition.
i had hardly been driving the car the last 2 years in fear of it failing.
i think the europeans are very conservative on their cam belt replacement intervals because of the consequences. usually total engine destruction.

we did find the harmonic balancer pulley was on the way out.
fair enough after 20 years. rubber was perishing.
if that had failed it would have been an interesting moment too i suspect.
though probably with a bit of warning as the timing would go out and give unpleasant performance symptoms before a big bang.

cam belts are a good idea - but only so long as they are considered with a proper view towards ease of replacement.
in the case of the 172 i am fortunate (and unfortunate) to own they jammed the engine from the next model up (the megane) in the clio engine bay. there is no room for the cam belt service. renault sport basically built a factory hot rod and just forced the thing in there. i wonder how they even got it in on the assembly line. i suspect they built the front of the car around the engine after it was installed.