Hyper Revving 1.8L "B20" VTEC?
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Joined: Jul 2004
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From: Long Beach, CA, USA
Hyper Revving 1.8L "B20" VTEC?
1.8L "B20" VTEC - I know that makes no sense. Unless, you put a B16 or B18 (VTEC) head on a B20B/Z bottom end, bore it over to 84.5mm, and swap the B20 crank w/ a B16B crank; THEN, you would have a 1.8L "B20" VTEC. Now, what is the point of doing all that? Hondas are well known for their undersquare motors that can rev to the sky - except for the CTR's B16B, which is slightly oversquare. The problem w/ undersquare motors is their "inability" to rev even higher due to the higher piston speeds, SO what if you make an oversquare "B18" (my frankenstein 1.8L B20/VTEC) - you have the capability of revving NOTORIOUSLY high! No gains in torque, but as we all know, higher revs means higher horsepower (assuming torque can be held up to certain rpm). Imagine a 11,000 or even 12,000 rpm redline out of my "B18"?
Has anyone ever contimplated this (or am I alone)? Any thoughts or comments?
Has anyone ever contimplated this (or am I alone)? Any thoughts or comments?
MiG-21 superfan
Joined: Mar 2001
Posts: 8,628
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From: near the ocean, Moderator City, NJ
Re: Hyper Revving 1.8L "B20" VTEC? (TougeSPEC_DC2)
Oiling could become a HUGE problem at rpm levels such as this, unless you have a solution other than using an OE pump...
What would you use to tune @ rpm levels past 10K? I don't know of any engine management, other than exotic motec setups or maybe pectel...
RPM levels like the ones we are talking about here can only be attained with ultra light weight components scattered throughout the engine-
lightweight valves, hollow cams with possibly no lo lobes, Ti retainers, some sort of VERY special valve springs in terms of pressure, Ti rods, etc...
Your cam profile would have to be extremely radical and furthermore, the porting would be something spectacular to actually allow the motor to work as an effective pump, NA, at these types of RPM levels...
Something like this might work if you need maximum HP for a touring car and have an unlimited budget for parts, r&d, and tear down after a few hours of use...
What would you use to tune @ rpm levels past 10K? I don't know of any engine management, other than exotic motec setups or maybe pectel...
RPM levels like the ones we are talking about here can only be attained with ultra light weight components scattered throughout the engine-
lightweight valves, hollow cams with possibly no lo lobes, Ti retainers, some sort of VERY special valve springs in terms of pressure, Ti rods, etc...
Your cam profile would have to be extremely radical and furthermore, the porting would be something spectacular to actually allow the motor to work as an effective pump, NA, at these types of RPM levels...
Something like this might work if you need maximum HP for a touring car and have an unlimited budget for parts, r&d, and tear down after a few hours of use...
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