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Old 07-01-2011, 13:08   #16
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hey thanks ,i am a moron didnt proof read thread dosent have turbo does have blower, amazing what you find when you open ur eyes,found all manuals for engine stuffed in drawer.eng is n70 and has some kinda electric solenoid hooked to govenor sw-vs book keeps on bout adjusting gov im afraid of that.engine runs smooth no smoke in exhuast good power, would a crusty screw do the rpm drop ?
thanks
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Old 07-01-2011, 13:14   #17
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There's a spring that is attached to the throttle linkage on the governor, if it's worn, rusty or broken you'll not be able to pull hard enough on the linkage to realize full rpm.
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Old 07-01-2011, 13:18   #18
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Originally Posted by Chief Engineer View Post
Is it naturally aspirated or does it have a turbo?
There is no such thing as a Detroit Diesel 2 stroke which is naturally aspirated. Their operating principle requires overpressure and they all have mechanical superchargers.
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Old 07-01-2011, 14:41   #19
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starting fluid

Quote:
Originally Posted by Chief Engineer View Post
The key to these engines is to get a shop and owners manual first.

There are a number of zincs on these engines......do not ignore them

Is it naturally aspirated or does it have a turbo?

Make sure that the emergency stop circuit works.

Do not use it to routinely shutdown the engine.

It is nice to put a containment can under the airbox drains.

In wintertime put block heaters in and leave them on.

Never use ether...ever...ever...it will "kill" your rings due to abnormal wear
and you can get the engine running backwards (rare).
If you start using starting fluid {nose candy } it seems that they won't start without it . Its like they get addictated to it, a 71 series rule of thumb 1 gallon of fule hung in the corner per cylnder per hour 2250 rpm , and if it don't leak oil somethings wrong with it.They will run for ever won ww 2 and loud from intake the blower on a Detroit is double the natural 14.7 lbs atmospheric pressure they are screamers but RUN great need parts they are cheap I would trust one anytime.
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Old 07-01-2011, 16:10   #20
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If you start using starting fluid {nose candy } it seems that they won't start without it . Its like they get addictated to it, a 71 series rule of thumb 1 gallon of fule hung in the corner per cylnder per hour 2250 rpm , and if it don't leak oil somethings wrong with it.They will run for ever won ww 2 and loud from intake the blower on a Detroit is double the natural 14.7 lbs atmospheric pressure they are screamers but RUN great need parts they are cheap I would trust one anytime.
This is from memory, so some of the details may not be accurate:

Back in the 70's they had the Great American Truck Race at the Atlanta Speedway. (Film of it was used in the second Smokey and the Bandit film). There were various K-Woppers, long nose Petes, etc. The winner was an ancient GMC single axle with a 671, blowing blue smoke all the way. It was driven to the race, in the race and back home from the race on the same set of re-treads.

I wouldn't be surprised if that truck was still on the road.

-dan
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