Project B18A1 Stealth Part 5
Hey guys,
I got another update from C-Tech Performance. As most of you know we have building a all motor b18a1. Basically showing everyone how to build a tuner car motor in a for a street car. Heres the update:
C-Tech Performance did some porting on the intake and exhaust, as expected the intake gained small amounts but the exhaust gained 3% to 4% at low lift and 8% at .400 lift and didn’t go flat above .400 lift as it did in test no. 2.
As you can see in the pictures all they was square the ports just before the radius, the port size they left as is because the gains would be above the cam lift we have and wouldn’t help and the low lift flow would suffer with a bigger port. The next step to get more flow would be bigger valves.
This is how the flow numbers finished on test 3.
Intake
Lift .100 .150 .200 .250 .300 .350 .400 .450 .500
Flow 76 116 161 192 195 204 214 223 224
Exhaust
Lift .100 .150 .200 .250 .300 .350 .400 .450 .500
Flow 66 102 140 166 178 185 188 189 190
Intake Stock:
Intake Ported:
Exhaust Stock:
Exhaust Ported:
This is how you build a tuner car motor the right way. Street cars take on a different type of build most of the time but we wanted to have the best possible all the way around.
We would like to thank our partners:
SuperTech Performance www.supertechperformance.com
Certified Racinghttp://www.certified-racing.com/
Crower http://www.crower.com//
Gates Racing http://www.gatesracing.com/
Cometic http://www.cometic.com/
Performance Porting http://www.performanceporting.com/
Carquest
C-tech Performance http://www.c-techperformance.com/
Ralco RZ http://www.ralcorz.com/
Aasco Flywheels http://www.aascomotorsports.com/
Exedy Racing USA http://www.exedyusa.com/
Kamikaze http://www.kamikazeperformance.com/
MSD Ignition http://www.msdignition.com/
Thermo Tec http://www.thermotec.com/
Raxles Inc. http://www.raxles.com/
If you missed the beginning of this story Project B18A1 Part 1
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Tuner Maneuver Magazine - Muskegon,MI
