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| Engineering/ Technical Ask technical questions about cars. Do you know how a car engine works? |
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#2
03-01-2005, 12:30 AM
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Re: Can you run an engine backwards.
Yes and no. You can design an engine to run backwards, but it would take a considerable amount of work to convert an engine to run the other direction.
Believe it or not, but there are actually versions of the 350 (i think it is the 350) that are designed to run opposite of the normal. These engines are used in boats that have 2 engines so that the propellors turn opposite which eliminates torque-steer.
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2015 DGM STi - 2006 SGM STi - 1999 Built/boosted GSR 
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#4
03-01-2005, 09:12 PM
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I hope you can accomodate a transmission that runs backwards too.
__________________
 "The CEG Nazi" www.contour.org 1996 Ford Contour SE - Sold 3.0L V6 and Arizona Dyno Chip Turbo Kit 364 whp, 410 wtq @ 16 psi and only 4,700 rpms. 1999 Tropic Green SVT Contour - Bone stock and MINT
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#5
03-01-2005, 09:21 PM
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Re: Can you run an engine backwards.
You didn't specify what kind of engine. The biggest change is the camshaft. The starter is a given. Water pump usually, unless it's electric. It will vary by engine after that. Usually it's a boat thing, so the trans. isn't an issue. Look up a marine engine for more detail.
Some older diesels also will run backwards...with no changes. This is not a good thing, but does happen when lugged too hard.
__________________
Remember: Don't confuse noise with horsepower! and Junk is junk, even when it's on sale! "I would never doubt your expertise....it's obvious you wrote the book on stupidity!" DD
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#6
03-01-2005, 09:29 PM
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Re: Can you run an engine backwards.
Older two-stroke engines will easily run backwards.
The electronic ignition kind won't , but many older ones used a magneto and points ignition system. Just spin the engine backwards and off you go. This is very easy on old (30+ years) 2-stroke dirt bikes. If you go up a steep hill it's easy to stall and start rolling backwards. If you are in gear, the engine might start and accelerate you at a huge speed........ backwards. Very embarrasing and often painful.
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#8
03-02-2005, 01:52 AM
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Re: Can you run an engine backwards.
Curious: For what purpose?
__________________
Remember: Don't confuse noise with horsepower! and Junk is junk, even when it's on sale! "I would never doubt your expertise....it's obvious you wrote the book on stupidity!" DD
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#9
03-02-2005, 11:37 PM
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Maximum horsepower per liter is why. Now some people would say why not just get a bigger engine? Because that's too easy. I don't have the money to buy an RSX and Rice it out, so i figure i'll take i-VTEC in all of it's glory and throw it in my car. I want to live in AZ because it has nice roads year round. That means that I need A/C. I don't deal with heat well.
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#10
03-03-2005, 12:05 AM
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Re: Can you run an engine backwards.
Ok, thanks for the info. I'm not a Civic guy, but what you're saying is that the engine faces the opposite direction in the donor car? And I'm with you on a/c..gotta have it
__________________
Remember: Don't confuse noise with horsepower! and Junk is junk, even when it's on sale! "I would never doubt your expertise....it's obvious you wrote the book on stupidity!" DD
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