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Forum: Diesels

03-04-2011, 04:42 AM

Replies: 35

Rpm!

Views: 7,959

Posted By theholycow

Re: Rpm!

I don't think that would turn out well for anybody.

I'm not sure if anybody is still paying attention. I am quite sure that neither of you will convince the other.

Forum: Diesels

12-22-2010, 03:33 AM

Replies: 35

Rpm!

Views: 7,959

Posted By theholycow

Re: Rpm!

Well, in a throttled engine, vacuum is made by those things but only exists because the throttle is closed. Keeping a vacuum uses energy that could go to the wheels instead.

In a diesel...uhh, can...

Forum: Diesels

12-21-2010, 03:11 AM

Replies: 35

Rpm!

Views: 7,959

Posted By theholycow

Re: Rpm!

dieselmech, what you said about vacuum is true in carbureted gasoline engines, but not so with MAF-equipped fuel injection. In fact, if you've got a lot of vacuum then you're wasting energy making...

Forum: Diesels

08-21-2010, 01:01 PM

Replies: 35

Rpm!

Views: 7,959

Posted By theholycow

Re: Rpm!

That's about 30-40% difference. That IS huge. It would sound more significant in the form of gallons per 100 miles (or similar measure). I'd go from 40 MPG to 65 MPG with the same improvement.

As...

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