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B18 all motor build questions

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Old 01-06-2018, 09:43 AM
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Icon4 B18 all motor build questions

Hello this is my first topic, and i want to know your opinions on my build tha will start this year

specs are:
b18c6 block
stock crank
forged rods
forged pistons at least 12:1 compression 82mm bore
machined head with p&p
titanium valve springs and retainers
high comp valves
Buddyclub spec iv cams or jun 3 ???
vitor x intake with matched tb or itbs???
plm header - im between bisimoto style or rmf narrow, i have a chance to get a buddyclub header and got a 5zigen too
2.5 or 2.75 exhaust piping???
my goal is to take the rpm range to be really high like 7-9.5k rpm
will be tuned in s300
in confused about the cams, will the bc spec iv be too much for my setup? will the jun3 work better?
about the intake manifold, vitor x will it domuch less power than jenvey itbs?
about the headers, i think 4-1 suits me better, i really like the rmf because of clearence and smooth look for the cops but will bisimoto style or a buddyclub or 5zigen be better?
if i get the rmf my piping will be about 2.5 isnt that too small for such a high comp build?

THANK YOU IN ADVANCE and sorry for my bad english.



Old 01-07-2018, 07:46 AM
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Default Re: B18 all motor build questions

Parts list looks good, I don't know much about cams so I can't comment on that. Don't forget fueling, you'll probably want to step up your pump to at least a 190lph, but I would just do an Aeromotive 340 in case you decide later to convert to e85. (assuming you have it in your location) You'll also want to get bigger injectors, RDX 410 are a good budget injector. I have the old DSM 440s and they work fine, but I would probably make a few more HP/run better on the RDX's or Injector Dynamics. For an intake (not manifold) you'll want around 3" tubing with a velocity stack/filter for driving on the street. Personally I like the tri-y 4-2-1 headers since they usually have better ground clearance.

What will the car be used for? Mostly street with some drag racing?
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