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Checking Compression, With Head Off?


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#1 IamSherwood OFFLINE  

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Posted January 30, 2013 - 08:16 PM

I'm pretty sure it can't be done, but apparently "Rick" from

American Restoration can. :rolling:

 

I've got it on the tube in the background.

He was hand cranking over a motorcycle engine, that's off a resto he's

doing for Nascar's Greg Biffle.

The head was off, and parts of acorns where flying out of the cylinder.

 

He said, "well, it's got good compression" :bigrofl:


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#2 Michiganmobileman OFFLINE  

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Posted January 30, 2013 - 08:19 PM

Thats why he is on TV and you aint!! 



#3 Guest_rat88_*

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Posted January 30, 2013 - 08:19 PM

Thats a new one on me. Maybe he can tell by how many acorns hit the ceiling?



#4 chris m OFFLINE  

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Posted January 30, 2013 - 08:24 PM

Thats a new one on me. Maybe he can tell by how many acorns hit the ceiling?

I think you are right! I remember a squirrel told me if you do this test and 5 acorns hit the ceiling then it would be equivalent to 100 psi

 

:bigrofl:


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#5 IamSherwood OFFLINE  

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Posted January 30, 2013 - 08:35 PM

He was right.

 

He got it running. :dancingbanana:



#6 8tyman8 OFFLINE  

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Posted January 30, 2013 - 08:38 PM

I need a Video of that !



#7 Guest_rat88_*

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Posted January 30, 2013 - 08:39 PM

He was right.

 

He got it running. :dancingbanana:

And in the unedited version he rebuilt the entire engine and charged them $5000



#8 tractorgarden OFFLINE  

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Posted January 30, 2013 - 09:10 PM

Oh the joys of UN-reality TV!



#9 JD DANNELS OFFLINE  

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Posted January 30, 2013 - 09:15 PM

Well I vaguely recall from high school auto shop, there was a mathematical method of calculating compression ratio.
Pretty sure it had nothing to do with acorns!!!
Seems to me like it had something to do with the volume of the cylinder at BDC and the volume of the cylinder at TDC plus the volume of the combustion chamber deducted from BDC volume
don't quote me on that it was 45 yrs ago.

#10 Moosetales ONLINE  

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Posted January 30, 2013 - 09:35 PM

Well I vaguely recall from high school auto shop, there was a mathematical method of calculating compression ratio.
Pretty sure it had nothing to do with acorns!!!
Seems to me like it had something to do with the volume of the cylinder at BDC and the volume of the cylinder at TDC plus the volume of the combustion chamber deducted from BDC volume
don't quote me on that it was 45 yrs ago.

 

Come again? You lost me at....."Seems to me....."  :worshippy1:  Isn't math great. The things you can prove or disprove with simple numbers.



#11 Guest_rat88_*

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Posted January 30, 2013 - 09:45 PM

Well I vaguely recall from high school auto shop, there was a mathematical method of calculating compression ratio.
Pretty sure it had nothing to do with acorns!!!
Seems to me like it had something to do with the volume of the cylinder at BDC and the volume of the cylinder at TDC plus the volume of the combustion chamber deducted from BDC volume
don't quote me on that it was 45 yrs ago.


You can have displacement but no compression without something to plug it.

Edited by rat88, January 30, 2013 - 09:48 PM.


#12 Ryan313 OFFLINE  

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Posted January 30, 2013 - 10:08 PM

I also saw that, and I knew it would come up on the site! I prefer to stay away from shows like that, I can't help but I always wonder with every show what is real and what isn't!

#13 Texas Deere and Horse OFFLINE  

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Posted January 30, 2013 - 10:13 PM

That one is almost as good as the $6,500 resto he did on a Bantam for a guy. And he didn't even paint it the correct colors.

 

I'm in the wrong business



#14 JD DANNELS OFFLINE  

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Posted January 30, 2013 - 10:30 PM

Well you  can just plug in your numbers and let this program calculate it for you.

http://www.csgnetwor...m/compcalc.html


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#15 Texas Deere and Horse OFFLINE  

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Posted January 30, 2013 - 10:34 PM

Well you  can just plug in your numbers and let this program calculate it for you.

http://www.csgnetwor...m/compcalc.html

 

 

JD., That's neat.. thanks for sharing!

 

I bookmarked it. :thumbs:






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