Quote:
Originally Posted by freebeard
Thanks for that. It's a shame popcorn gets stuck in between my teeth. 
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Was this mentioned upthread?
I have an engine that needs to be torn down due to low compression on one cylinder, and a 0-miles engine assembly on the bench. I assume the first one would warrant treatment after the repair. Would the bench motor need to be broken in before it is eligible? |
I would say the 1st one, as is, is an extremely good candidate freebeard:
- The fact that it needs a rebuild anyway means way less anxiety in trying this.
- Then there's the chance to do a compression test and see the before and after numbers for both the tired piston and the 3 that are still good.
- You get to judge and hopefully film the before after amount of smoke coming out the exhaust.
- One might even do a before after gas analysis and (half throttle?) dyno run, but that does cost. (Is there any kind of funding thing going here where one might donate to such? There should be...)
- The old colour of the oil on the dipstick 'test' is another telling and cheap test. There is certainly a dramatic increase in the # of km for which the oil remains new looking, to the point where I delayed oil changes from 10k km to 15 or 20k km IIRC. It just didn't seem worth the trouble with the oil still looking so new and I wanted to see...
- Then there's always fuel consumption #s which are of great interest here.
IMHO I WOULD
NOT do this to a new or newly rebuilt engine:
The Engine should be thoroughly run in 1st IMHO.
IIRC most engines are properly loosened up and producing their most power/economy after around 30 000 km? (Need to check that)
I would consider that 'maximum power/economy after x? # of km' the bare minimum and might even add another 5k to 10k km to the number.
Reason being: IMHO the engine 'STOPS' running in after treatment and one would want your engine at its most optial power/efficiency level 1st