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  #21  
Old 06-21-2011, 08:59 PM
JHen JHen is offline
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Why not just make an adapter that has one set of holes lined up with the holes on the engine, then another set of holes that is set so you can put the carb in the correct orientation. Seems like a lot less work than reversing the valves.
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  #22  
Old 06-21-2011, 09:17 PM
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Why not just make an adapter that has one set of holes lined up with the holes on the engine, then another set of holes that is set so you can put the carb in the correct orientation. Seems like a lot less work than reversing the valves.
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  #23  
Old 06-21-2011, 10:39 PM
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alright.

run the engine backwards? lol

well the connecting rod is in backwards already i think.


maybe ill just take the time to make a manifold.
  #24  
Old 06-22-2011, 05:08 PM
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I'm still not gettin' how knockin' the camshaft 180 out can possibly reverse the ports.
Somebody please explain!!!
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  #25  
Old 06-22-2011, 05:19 PM
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i think it literaly makes the piston move opposite of normal. insted of it being on a power stroke it would then be on exhaust stroke? wich would reverse the air flow so it sucks through the exhaust port and blows out the intake. wich when you switch the exhaust and intake around should work. right?
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  #26  
Old 06-22-2011, 05:28 PM
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Remove a side cover from any of your engines and turn the cam 180 out.
Now, manually rotate crankshaft by hand (in the proper direction) and note how the cycles (strokes) progress.
Let us know what you discover.
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  #27  
Old 06-22-2011, 05:32 PM
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hey i just guessed. thats the only way it could work right?
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  #28  
Old 06-22-2011, 05:33 PM
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It will never work.
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  #29  
Old 06-22-2011, 05:34 PM
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what if he proves you wrong? i don't see why it couldn't with the right tools.
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  #30  
Old 06-22-2011, 05:38 PM
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what if he proves you wrong? i don't see why it couldn't with the right tools.
Then he will be suitably humbled. This, I gotta see.
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  #31  
Old 06-22-2011, 05:42 PM
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lols just cut the manifold and join the two bits together with a piece of rubber hose and hose clamps.

flexi carb manifold is better than solid anyway

thats why motorbikes mostly all have rubber boots insted of the carb mounted solid to the engine

then again i may not know what im talking about

edit: here is a picture

  #32  
Old 06-22-2011, 05:46 PM
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Quote:
what if he proves you wrong?
Who? Sideways? Not hardly.
No one will prove me wrong.
Prove it to yourself by doing what I suggested in post #26.
Would require a totally redesigned camshaft.
Lobes would have to be reversed.
What would a machine shop charge??
I would buy a clone before I would jump into such an endeavour.
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  #33  
Old 06-22-2011, 05:48 PM
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If the exhaust and intake valves are identical and you really wanted do do it this way, just get a custom cam ground with the intake and exhaust lobes swapped engine rotation and power would be the same, but now the exhaust port would be the intake.

This trick was done on old Buick nailhead engines because the exhaust ports had a larger valve and much better flow. On the one I saw it had 2 2 barrel carbs on either side of the engine and 8 exhaust stacks sticking straight out of the center of the hood
  #34  
Old 06-22-2011, 05:49 PM
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^ but why the heck would you want to do that just so you could use a stock lawnmower carb manifold?

haha
  #35  
Old 06-22-2011, 06:00 PM
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I think this thread has proved that arguing with a fool will only drag you down to their level, Let Blue screw up his engine. Its the only way some peopl learn.
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  #36  
Old 06-22-2011, 06:04 PM
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Quote:
Originally Posted by B man View Post
i think it literaly makes the piston move opposite of normal. insted of it being on a power stroke it would then be on exhaust stroke? wich would reverse the air flow so it sucks through the exhaust port and blows out the intake. wich when you switch the exhaust and intake around should work. right?
What the h### is opposite of up and down
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  #37  
Old 06-22-2011, 06:07 PM
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Quote:
Let Blue screw up his engine. Its the only way some peopl learn.
I disagree. He has to learn to think it through.
If reversing ports were that simple, B&S would have done it (along with all other manufactrers) long before now.
"There is nothing new under the sun."
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  #38  
Old 06-22-2011, 06:10 PM
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Quote:
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What the h### is opposite of up and down
Left to right?
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  #39  
Old 06-22-2011, 06:12 PM
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Quote:
Originally Posted by sexyvicta View Post
thats why motorbikes mostly all have rubber boots insted of the carb mounted solid to the engine

then again i may not know what im talking about
Every bike I have torn into uses carb boots because the engine and carb are shoehorned in so tight that carb (or indeed, engine) replacement would be virtually impossible any other way.
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  #40  
Old 06-22-2011, 06:15 PM
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Quote:
Originally Posted by oldbikerarlo View Post
What the h### is opposite of up and down
instead of the piston being up at that point in time it would be down.
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