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All Other GM Diesels Discuss any other GM Diesel engines... 5.7l Olds, Chevette Diesel, or anything else that doesn't fit anywhere else...

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Old 07-02-2016, 11:10 AM   #1 (permalink)
Jklier1988
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2-71 Detroit allis chalmers hd5

Hello all. Needing a few suggestions on my 2-71 Detroit. It starts great and runs like a top. The only problem I have is its a bit short on power. I'm cleaning out an old pond with very steep sides. I'm removing the silt out of the bottom. When reversing back out of the pond ( full throttle and poring black smoke) it takes all the old girl has to pull itself out of the pond. I need just a bit more power. I'm a self taught shade tree mechanic ( mostly gas engines). Don't have the tools, knowledge,or money for any fancy upgrades. Would I be able to upgrade the injectors or fuel pump for under $500 to get me an extra 15-20 hp?

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Old 07-03-2016, 04:19 PM   #2 (permalink)
DieselPro
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If it's pouring smoke like you say I doubt bigger injectors will help. The supply pump just supplies fuel to the injectors so HP to be found there.

A two cylinder is a bit under powered to begin with. If it's smoking at idle and moderate load new injectors might help.

Might try running the rack and adjusting the valves. Make sure the fuel is the best you can get. Other than that I don't know what you can do. Make sure the air filter is clean.

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