At small southern dirt tracks most people race very simple hopped up domestic blocks (is a fellow in town here racing scratch built car with a Ford 141 -- Pinto motor). Are specific rules for cubic inch displacement, NOS injection, etc. Have NEVER seen anything remotely similar to your little Euro cars. With all due respects think they'd be laughed off the track. BTW: This fellow is one who told me he only runs a couple inches of vacuum and thus has no advance on distributor (and yes, I do believe he uses MSD module for that). Has trophies all over office, so I trust his word. He runs horrifically advanced timing, but also rev's 3500 to 9000 RPM. BTW: Have you ever noticed all the different spark retarders MSD sells? Hmmm, what do you suppose those are for? Could it be to start an engine that is otherwise over advanced... Bill Robertson #5939 >--- In DMCForum@xxxxxxxxxxxxxxx, Jim Strickland <ihaveanaccount@xxxx> wrote: > I asked nicely to double check your facts before you replied, and you > clearly did not. > Any race engine built by someone with their head NOT in their ass would > have an MSD or other computer to control timing. > > To say that race engines have advanced timing because there is less > vacuum is the stupidest thing I have ever heard in my life. > > The Honda S2000 has a redline of 9100, so we're not talking about racing > anymore. The timing is 16+/- 2degrees BTDC. Hm, and it makes 183% of > the Delorean's horsepower and has 71% of it's volume. > > Higher RPM = higher horsepower = more advanced timing. Most recent > Hondas are aggressively timed. > > > > > > On Fri, 19 Dec 2003 20:24:03 -0000 "content22207" > <brobertson@xxxx> writes: > > My point is: PRV drops from 17 down. Race engine drops from something > > closer to 0 down. That's why we have vacuum advance diaphragms and > > they don't. That's why we can time closer to TDC and they can't. > > > > I still maintain that an over-advanced street engine, with spark > > advance active, will clatter like a threshing machine. If it > > doesn't, > > your timing scale/mark is probably off. Big block Fords are > > notorious > > for this as outer ring of harmonic balancer (where timing scale is > > etched) gradually moves with time. > > > > Bill Robertson > > #5939 > > > > >--- In DMCForum@xxxxxxxxxxxxxxx, Martin Gutkowski <webmaster@xxxx> > > wrote: > > > At idle. Rev it and pressure in intake increases (or for you, > > Bill, > > > vacuum falls). Vacuum is at max when throttle plates closed. At > > full > > > throttle, vacuum is minimum. This is the whole point of the vacuum > > > > > affecting advance and fuel enrichment via CPR. > > > > > > content22207 wrote: > > > > > > >PRV produces 17 plus inches -- more than enough to advance a > > rotor > > button. > > > > > > > > > > > > > > To unsubscribe from this group, send an email to: > > DMCForum-unsubscribe@xxxxxxxxxxxxxxx > > > > > > > > ------------------------ Yahoo! Groups Sponsor > > > > Yahoo! Groups Links > > > > To visit your group on the web, go to: > > http://groups.yahoo.com/group/DMCForum/ > > > > To unsubscribe from this group, send an email to: > > DMCForum-unsubscribe@xxxxxxxxxxxxxxx > > > > Your use of Yahoo! Groups is subject to: > > http://docs.yahoo.com/info/terms/ > > > > > > > > > ________________________________________________________________ > The best thing to hit the internet in years - Juno SpeedBand! > Surf the web up to FIVE TIMES FASTER! > Only $14.95/ month - visit www.juno.com to sign up today! To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx _____ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/DMCForum/ * To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx <mailto:DMCForum-unsubscribe@xxxxxxxxxxxxxxx?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> .
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