Twin Cam's B20/VTEC Progress Build
#1
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Twin Cam's B20/VTEC Progress Build
Finally got my b20v back on the road after breaking a valve a few years ago. It's humid and raining for the past week or so but hoping to have some track numbers soon. The car was running 68% ethanol on the dyno and it was 98 degrees so left the timing a little conservative up top since it's about to get hotter and I drive the car a lot. Probably gonna go back at some point and make another map with my "track" intake, higher ethanol, and more aggressive timing but i'm happy with the results right now.
B20b block
Stock crank
Eagle rods
84.5mm Wiseco pistons (Around 12:5.1)
Endyn block girdle
B18 ITR head
Ferrea valvetrain
Jun IV cams
Stock LMAs
Skunk2 Ultra street with .5L spacer (just cleaned up)
Skunk2 74mm TB
custom 3.5" to 3" intake
Spark Racing Header with custom 3" exhaust
Grams 255lph pump with 750cc injectors
B20b block
Stock crank
Eagle rods
84.5mm Wiseco pistons (Around 12:5.1)
Endyn block girdle
B18 ITR head
Ferrea valvetrain
Jun IV cams
Stock LMAs
Skunk2 Ultra street with .5L spacer (just cleaned up)
Skunk2 74mm TB
custom 3.5" to 3" intake
Spark Racing Header with custom 3" exhaust
Grams 255lph pump with 750cc injectors
#4
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Join Date: Jun 2006
Location: Kitchener, ontario, canada
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re: Twin Cam's B20/VTEC Progress Build
Nice build and #'s..saw the car on that heyyyy dudes YouTube haha
must move a light ef nicely! I have a similar setup as you and have been considering the same IM/spacer 74 TB..
must move a light ef nicely! I have a similar setup as you and have been considering the same IM/spacer 74 TB..
#5
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re: Twin Cam's B20/VTEC Progress Build
Nice numbers. Curious what a ported head and valvejob would yield on this build.
#6
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#8
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Re: Twin Cam's B20/VTEC Progress Build
Finally got a few street tire passes in tonight without getting rained on. Temp was 89 with a heat index of 101 so not too bad for us. lol
#11
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Join Date: Feb 2010
Location: Seattle, WA
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Re: Twin Cam's B20/VTEC Progress Build
Great build! Your EF looks fantastic and puts down a healthy amount of power. Can you share with us some info on the transmission? Thanks
#15
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Re: Twin Cam's B20/VTEC Progress Build
With a 4.7 he'd accelerate noticeably faster and he'd still easily be within 4th gear by the end of the 1/4.
Sick build, very cool man.
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Re: Twin Cam's B20/VTEC Progress Build
#17
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#18
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Re: Twin Cam's B20/VTEC Progress Build
In regard to optimal gearing for acceleration, it has more to do with how much can be used. Gearing is essentially multiplying the torque, too much for the given speed and the car can surpass the available grip. Take a look at this video, I found it to be very useful. https://www.youtube.com/watch?v=zZBqb0ZJSwU
I'd still go for the 4.7 personally, but to each their own. Love your build man, and congrats on the new time/trap!
#20
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Re: Twin Cam's B20/VTEC Progress Build
Looking good man. I bet with a 4.7 you pick up 2-3mph in the trap and 60" will drop some. You get that 60' to a consistent 1.7 and youre low 12's all day. What the car weigh? My EG at 2300 w/ me in it pulling mid 1.7's and 112 traps is 12.0 - 12.1 consistent. 253whp 162tq
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vtecmasta85
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10-22-2015 08:23 AM