Quote Originally Posted by Chip42 View Post
... dave, we all know that prelude is effectively the same engine and should be treated the same way. write us a letter. or don't, if you are tired of seeing changes.....
Dave,

be very, very careful here. if they deem your motor as being "effectively the same engine" then you are likely to gain 100 #'s to the 2550 same as the accord. because if your motor is "the same" then we need to start with the same stock HP as the accord.

i maintain that your motor has a "similar" design. the lower CR (8.8 vs. 9.3) means that your 0.5 bump only gets you to be "effectively the same" as the accord is stock.

Chip,

i am not really that upset but i want to make sure that i am understanding the design differences in the Honda family of 1986 vintage fuel injected motors that would result in the dyno readings. you inferred at RRAX that there is good data on the 1986 crx si motor that supports the 1.3.

i am not disputing that right now since i do not have any dyno readings for a full built motor of my vintage. but as an engineer, i would like to know the design differences that give my motor so much more mojo gain per liter than the accord/prelude 2.0 L.

my issue with the dynos is that these could be manipulated if one is so inclined. both up or down. both by an engine builder or a competitor.

WOW! look at the big HP numbers i generated, pay me big $$! WOW! look at the low HP numbers i generated, i need a lower factor!

i see the similar engine design and the dyno results as both being data points that should be considered.

tom