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Old 06-06-2019, 06:19 PM   #46
whittler74
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Default Re: Why zoomies?

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Originally Posted by SAMMY CHRISTIAN View Post
The Honda sixes are 2-strokes (NOPE) and it has long since been proven that megaphones are about the worst possible way to make power on one, well designed expansion chambers put all that junk to rest, easily doubled the horsepower.

Bigtime, how's that set-up sound? had thoughts of doing that, didn't know you had already.
Honda 6's ARE DOHC , 4 Valve per cyl 250cc-350cc at least till 1967 ! ! Look again ?

Honda did not go to two-strokes till later and Back to 4 storkes for the NR-500 2 Cyl , 8 valve !

Now Honda runs a V-5 cyl, 1000cc= 60" = 250+ Horses ...5+ horse per cu inch !
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Old 06-06-2019, 11:38 PM   #47
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Default Re: Why zoomies?

Wouldnt the expansion of the flame front leaving the pipe effect the revision?
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Old 06-07-2019, 08:17 PM   #48
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Default Re: Why zoomies?

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Wouldnt the expansion of the flame front leaving the pipe effect the revision?
Maybe the Reversion?
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Old 06-25-2019, 04:10 PM   #49
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Default Re: Why zoomies?

I was told that zoomies were mainly for the down force they provide. And that NHRA had very strict rules on them due to the performance advantages of laying them back more. It seems they are getting a lot more use in the RvW type cars in the last couple years.
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Old 06-30-2019, 06:02 PM   #50
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Default Re: Why zoomies?

I'm going to guess the zoomies and there angle have alot to do how well they scavenge or "pull" exhaust out of the engine.
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Old 06-30-2019, 07:01 PM   #51
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Default Re: Why zoomies?

The angle of zoomies has an affect on downforce, nothing more.
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Old 06-30-2019, 08:17 PM   #52
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Default Re: Why zoomies?

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The angle of zoomies has an affect on downforce, nothing more.
Are you sure ? Not Facts , just My obsrivation from afar

Last year Funny Cars started laying their Zoomies back and made .005 to .006 Gains , 3.85 to 3.79 Robert Height Record ? Performance from Laid BackZoomies - Forward TRUST ?

Also John Force and others were Out of Control, Wrecking - Aborting runs cause of Lack of down force - Traction , NHRA said hold on , you guys messing up the Track and Schedule , thus the Minimun Angle RULE on Zoomies !

On Factory Stock cars with the BLOWERS, are they running Zoomies are 4 into 1's ? Wouldn't Zooomies be Better on a BLOWN engine ?
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