b16 revlimit setup
03-16-2009, 09:59 AM
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b16 revlimit setup
i have a b16a2 i had only an intake and exhaust piping to an rsx exhaust. just recently i added an itr intake manifold, itr cams and a header. my basemap has an 8k revlimit from my old setup safely what the max redline i have on my new setup.(my vavletrain is stock btw)
03-16-2009, 10:13 AM
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Re: b16 revlimit setup
it actually should be when the engine stops making power, but remember your valvetrain was setup for the stock cams.
spirited driving should be fine, but reving to 9k all the time may take its toll on the springs.
spirited driving should be fine, but reving to 9k all the time may take its toll on the springs.
03-16-2009, 12:47 PM
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Re: b16 revlimit setup
whats an stock itr 8500? i cant remember. i ihavent had to look in a while.
but if you are scared here, then dont take it that high. and just now saw stock valvetrain. just a shade over 8000 then.
but if you are scared here, then dont take it that high. and just now saw stock valvetrain. just a shade over 8000 then.
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03-18-2009, 07:24 PM
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Re: b16 revlimit setup
keep it stock. rev limit should not be determined by external boltons. your valvetrain is stock and im guessing so is the bottom end. THOSE things determine your engines maximum rpm on a daily basis. keep it stock and it will be fine ALL day long for years to come. start going above and you are risking things for no real reason.
with a complete forged bottom end thats balanced and upgraded valvetrain with lighter retainers and heavier springs i would have no problem taking a b16 to 10K as long as im still making power that high.
another thing that i didnt realize and most people have no idea about..............
at about 9000rpm the bearing end of a connecting rod is no longer round, it is an elongated circle. which means that the sides are closer to the rod journal then the top or bottom. with standard bearings which are a perfect circle at rest this makes the bearing tolerance VERY tight on the sides at 9K. they have designed bearings that are thinner on the sides(the parting line where the bearing halves split) for this application. so that when the rod elongates, there is less chance of bearing contact and it keeps the oil clearance in spec.
hopefully that makes sense to you guys, it makes sense to me but then i know whats coming out of my head. if its not making sense ill try and explain it another way.
with a complete forged bottom end thats balanced and upgraded valvetrain with lighter retainers and heavier springs i would have no problem taking a b16 to 10K as long as im still making power that high.
another thing that i didnt realize and most people have no idea about..............
at about 9000rpm the bearing end of a connecting rod is no longer round, it is an elongated circle. which means that the sides are closer to the rod journal then the top or bottom. with standard bearings which are a perfect circle at rest this makes the bearing tolerance VERY tight on the sides at 9K. they have designed bearings that are thinner on the sides(the parting line where the bearing halves split) for this application. so that when the rod elongates, there is less chance of bearing contact and it keeps the oil clearance in spec.
hopefully that makes sense to you guys, it makes sense to me but then i know whats coming out of my head. if its not making sense ill try and explain it another way.
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