WHEN YOUR CAR WAS DESIGNED.......

[c.d.iesel]

A BIT OF HISTORY for Winter Sunday

....and another (many related) use for the the

word DOPE

[aa/fd]

Some compression ratio examples, rules do change and I have not a clue what is going on in F1 6 valve 18,000 rpm artwork

Nascar 12x1, early 90's restrictor plate engines at one time were around 18x1, rule changes banned this trick

Pre IRL, Indy Cosworth, Ilmore, Offy Methanol burning turbo-charged 11x1 at 45+ inches. Qualifier power-plants were known to be higher occasionally

Supercharged Methanol 500ci drag-race engines 13x1 @ 50+lbs. 2500hp+

Supercharged Gasoline drag-race engine 6.5x1 @ 30+lbs

Carburetor Gasoline NA. 500ci drag-race engine 14x1+

The current race gasoline is way over the old 100 octane numbers of the old days. Be it Research or Motor scale octane.

Gasoline is still limited by detonation in BMEP numbers. Methanol by nature is easier to run up the pressure with turbos or blowers and loves compression.

Nitro motors are in another league, just look at them as compression ignition, spark exited, internal combustion engines, limited by structural yields of components in a mobile destructive testing lab

Supercharged Nitromethane 500ci drag-race engines sport c/r's between 6.8 to 7.4x1 and reach 50+lbs boost in a tenth of a second.

A Kalitta/Goodyear Tire Test 2005 @ PIR revealed the first hard numbers on one of these monsters, 9800ftlbs torque measured at the instrumented rear wheel hubs.

[c.d.iesel]

... well my focus was on the begining of automotive

motors up to 1970- PRE-ELECTRONIC, DIGITAL MONITOR/CONTROL ERA

which relying on heavy, clunky, mechanical advance/controls by comparision- to digitec, micro process, cadcam designed itibity tight tolerance new go-to-the-moon stuff.

. . . . please pass the WEBER jets dad

[aa/fd]

Last I checked drag race cars and Nascar motors had carburetors.

So pass the Holley jets please son.