Ok guys, I just got a ek coupe last Friday, it has a second gen jdm b16a, itr cams, p 73 ecu, no name headers, no name intake, and magnaflow exhaust. Car is untuned and everything else is stock.

I have a couple questions, I've been searching and it seems that most people recommend upgrading the valvetrain to at least include the dual valve springs when putting in type r cams. So what I wanted to know is am I ok to rev the motor to 8k without worrying about damaging the head? Also, I was planning on converting to OBD I and to have the car tuned on hondata for all motor. What kind of numbers would I be looking at? I just want to have a rough idea of where I'm at. Car is my daily and will not be doing any autox but may take it to the track once or twice.

 

yeah, valvetrain would be a good upgrade... ( for peace of mind ) some say its ok to run itr cams with-out at least itr valve train..but i say get at least itr springs, retainers, ect. you should deffently get a wideband.... cause your probly leaning out in the higher RPM... i wouldnt be taking the car to 8grand just yet..

my.02

 

In my opinion, you really do not need to upgrade the valve train for itr/ctr cams because you are not revving the engine past 8k. If you do accidentally or out of curiosity decide to rev past 8k-8200ish, there may be a failure. It then again, you may get away with revving the particular engine to the p73 ecu's fuel cut, but just because you get away with it does not mean you have an stock "miracle valve train". The wear and tear is happening, but you just do not see it. It will eventually fail and 95% of the time it will hinder the head and short block useless.
As far as the p73 ecu on b16. I've seen many people do it and the engine run great, as far as their butt dyno. In reality, the ITR maps were not intended for b16 and it would feel better, perform better and last longer if it were tuned on a dyno or even street tuned.

 

What would you suggest having it tuned on? And would you suggest just upgrading to a full ITR valve train or perhaps an aftermarket one like skunk2, blox, etc? And what RPM would you suggest would be "safe" to shift at w/o the upgraded valvetrain? And what kind of power to the wheels do you think the current set up is making? sorry for all the questions I just want to get all the info first before I start dumping any money.

 

As far as the tune goes. hondata s200/s300, eCtune, Crome, Neptune, etc. I'm not saying your setup will fail if it's not immediately tuned, but it will make more power, smoother power and depending on the setup's needs you more than likely will save some money at the gas pumps.

Valve train depends. I would upgrade to an aftermarket valve train if you are upgrading to aftermarket cams at the same time. It's not worth the upgrade to after market valve train for oem cams. I would suggest purchasing ITR valve springs for the intake side and keeping your valve springs on the exhaust (they should be dual springs stock)

The Safe Rpm to shift at now would be 8k to 8200ish with oem b series (non type-r) valve train. If you upgrade to the type r valve springs on the intake side,then your SAFE rpm limit would be stock itr/ctr 8400-8600ish.

The SAFE rpm shift will not provide you with the best track times, but will keep your engine together for it's expected lifetime. If you have a donor, rev the engine until it falls into the sweet spot which you will know after you get it dyno tuned and observe your graph.

 

Thanks for all the info AllMtrRex, really helpful