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24HourForums.com > Supported Forums > Shimmy's Things On Wheels > I know the S.P. gap for a 350 is .035 but........ |
| Moderated by: shimmy |
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librtyhead Original500© Member 
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........on a 4 barrel. I am doing a tune-up this weekend and I guess I need to know the compression on #1 cylinder (that would be the most beat) anyone know off hand. Hairy greasemonkeys are not discriminated and are held in the highest regard. ..Thanks
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shimmy Original500© Member 
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librtyhead wrote: ........on a 4 barrel. I am doing a tune-up this weekend and I guess I need to know the compression on #1 cylinder (that would be the most beat) anyone know off hand. Hairy greasemonkeys are not discriminated and are held in the highest regard. The average compression is usually around 140 P.S.I. What make/model/year/engine?
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librtyhead Original500© Member
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It's a fairly new engine maybe 3-4 yrs old w/15,000-20,000 mi on it crate I think what if the cyl were bored to .040? is there a formula for finding out? with a compression gauge...........the history on this thing stinks
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librtyhead Original500© Member
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I was stinkin 135 psi on a good day. but only w/#1 cyl. the rest should be good
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shimmy Original500© Member
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You have me confused? What do you want? The compression ratio? What the compression should be?
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librtyhead Original500© Member
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shimmy wrote: You have me confused? Thanks I guess the question is what should the compression be if it was bored out the compression would be higher than 140 when I screw in the compression gauge I guess I will have the answer if it was bored out or not.....I will let you know what it reads.
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shimmy Original500© Member
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More air/fuel being forced out the same size valves , should give you higher compression.
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librtyhead Original500© Member
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compression test came out #1= 136lbs 2=139 3=138 4=138 5=136 6=138 7=138 8=136 Makes me think 1-5-8 are low comp. but not enough to mess w/also tells me which ones are working harder............not enough to make me worry.... Thank you. The plugs looked a little white............have you ever installed a 30hp sneaky pete?  I am set up withall the lines and the was wondering. A tank,button and extension on my carb would work. Just had to check my compression to see if it could handle it.
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24HourForums.com > Supported Forums > Shimmy's Things On Wheels > I know the S.P. gap for a 350 is .035 but........ | ||||||||||||||||||||||||||||||||||||||||
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