i have a b16a and i was wondering how i can get my engine to rev past 9K rpm's?? What kind of parts do i need? Someone told me to get ITR outer valve springs, portflow inner valve springs, ITR valves, titanium retainers, CTR intake cam, and ITR exhaust cam. Will this setup help me handle the higher revs? will it make my engine rev past 9k? if not how so? thanx!

 

Hmmm... lightweight pistons? Something to lighten the load produced by the rods, for sure... those create hella load at high RPM.

 

Those are the basic right ideas:

you can save a little money though - HD valve springs and retainers necessary. Valves on the exhaust side need NO change and may (but do not have to) change the valves on the intake side.

Cams are designed to make power at crtain rpms but ITR or CTR are streetable as opposed to Todas, etc. which some report difficulties with.

Pistons will change compression, and burn characteristics but themselves not necessarily going to affect revability.Note that rods must be milled ~ 1mm to each side on piston side if you going b16a with the CTR pistons.

Don't need to change rods, but might want to change bearings.

Don't need to do headwork, but that would get you more HP with your rpms. Same with TB and ITR manifold (intake)...

 

so basically what i need to do is upgrade the valve train?

 

You guys forgot something and i bet a lot of people don't know this but if you use any aftermarket cams (atleast japanese cams) or ctr/itr cam you want to change your vtec crossover point above 5k somewhere around 5500 so there isn't a vtec dip. i think ctr/itr cams stop making power after 8500 but i'm not sure but toda's and jun's make power up to around 9200 so if you want to go up to 9k buy aftermarket cams that is the back bone of the operation and if you use these cams you need to change your valvetrain anyways.

 

Red Civic T you don't need to mill the rods to use ctr pistons and the compression will be 11:1 that's perfect for the street

 

so what kind of valvetrain parts do i need to go with say..the jun cam's? Do i need to change the Vtec X-over with the aftermarket cams also?

 

I had to mill rods (stock JDM b16a) to fit the CTR pistons - they would not fit otherwise.

I don't know if that is right about the VTEC crossover - Locash suggested 5000 rpm for my particular application which I got (haven't yet dropped the motor in, but it is built and doing the wiring)...

 

maybe i'm wrong about the milling but i know for sure you don't have to mill b18c rods or b18c5 rods and vtec crossover point at 5k that will help but only a dyno can tell you where the perfect spot is and vavletrain you can buy mostly any aftermarket stainless steel vavles and titanium retainers. the jun vavle springs are expensive though but for sure they will do the job i heard the crower springs are good

 

i have a set of inner valve springs from Port Flow, and titanium retainers from them as well...will ITR outer valve springs work okay?? Which aftermarket valves are good?

 

any vavles are good they are all the same just find the cheapest ones and the springs the inner itr ones are good you just need the outer ones

 

actually i have inner valve springs from Port Flow...i don't have outer ones yet...but i don't know which kind to get. How does JUN valves sound? What about JUN camshafts?

 

actually i have inner valve springs from Port Flow...i don't have outer ones yet...but i don't know which kind to get. How does JUN valves sound? What about JUN camshafts?

 

I'm wondering here....Why do you only have the Portflow Outers?Cams dont make power past 9200/9300 Rpm. You will have to Chenge you springs and retainers. The valves should be Ok, and you might want to go forged pistons to be strong revving that high. Shot peen your rods, or get aftermarket. Have your crank knife-edged. (this of course is is you are doing an overhaul as well) Have your crank x-rayed to see if it has cracks also have it stress relieved. If you are not doing a complete over haul...Just ust crower springs (they sell inner and out as a set) and use Toda cams cause they rev really high. Dont forget..You will have to send your ECU to Zdyne for re-chipping to remove the factory rev limiter.
HTH
~C~

 

he doesn't need the whole crower set the juns springs are koo but the cost a lot they're cams are koo stage 3 and the toda b are koo you don't need to get your crank knife edged unless you want to it will be lighter your pistons could handle revs up to 9k you don't need to send your ecu to zdyne you can send it anywhere

 

i have Port Flow inners...not outers, and i have the titanium retainers too. (i haven't put anything in yet though) But i'm trying to get either ITR outers or something like that. Hm...i don't think i'll be switching out my pistons till later though...would it make a difference if i upgrade my valvetrain now if i plan on force feeding later???

 

oh yea...i'm not really worried about the JUN pricing...cuz i'm getting the parts at cost price...also...do i have to send my ECU out?? or can i get an ecu from a different car and re-chip that one, if so..which ecu??

 

alll you need is valve springs and retainers. everything else should be fine. but cams would be nice. ctr isnt a bad idea.

 

but do i have to send my ecu out?? or can i use another ecu from a different car or something...and re-chip that one...eg. maybe a ecu from an R or a GSR??? i dunno...help?

 

I sent my PR3 ECU (JDM b16a) to Locash, and went with the Mugen program but changed the VTEC crossover to 5000 rpm at his suggestion. He is with HASport - http://www.hasport.com

 

how can you tell what kind of ecu you gotz?

 

which ecu's can i use with the B16A? which one is the best? or does it matter?

 

Mine says PR3 in a series of numbers just underneath the bar code...

I think that is usually the best one (PR3)...

 

actually a p28 converted to a dohc ecu is better no knock sensor and that will free up hp get the mugen program check with jdmhondaparts and katman will hook you up you can find these ecu's for hella cheap because they come from 92-95 civic ex or any other sohc vtec obd 1 car but you need some itr or ctr or aftermarket cams because vtec switchover is 5700 i think

 

what exactly does the mugen program do?? Is it possible to use a ECU from an R???