RWD - Tight Squish is an internet myth
                    

Volvo RWD 140-160 Forum

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Tight Squish is an internet myth 140-160

http://www.rbracing-rsr.com/squishcalc1.html & http://tinyurl.com/ojs46g

They are correct, but in both cases they are talking about Harley's which have Hemi heads. Pure Hemi heads are possibly best two valve design for breathing, but the worst design for combustion. The intake gives no swirl like some other two valve head designs are capable off & no tumble either which four valve heads have. Addition of quench is essential to Hemi, partially because it reduces the combustion area.

My machinist, Ed Trihey, has.....never once said to me, "Don't run the clearance that tight or you'll make less power."

What clearance did he recommend?




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New B20E [140-160]
posted by  rawits  on Mon Jun 29 13:13 CST 2009 >


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