B16b cams on stock B16a

[JDM_EK4_HB]

Is it ok for me to install B16b ctr cams on my B16a w/o having type r valve springs(double springs)? I have no plans on increasing my rev limit pass 8200. Stock ECU only. TIA

 

[oscarsayco]

sure you can they are oem parts so they wont hurt the engine

 

[clockwoRk]

i did on my old engine. No probs within the three or so years I kept it after that and I tracked it quite a few times. I wouldn't count on them making you power unless you get it mapped though

 

[Rich777]

I wouldnt do it or recommend it at all.

 

[Mattharvey12]

I wouldnt do it or recommend it at all.

Why?

What if it was to be mapped?

 

[Rich777]

Its got nothing to do with mapping. Its more the mechanical side of it. Honda designed the dual spings to work with there ITR/CTR cams. Never did they use a single valve spring on them. I know people have done it before and kept the rpm down and been fine its just that i don't like the idea as the engine may come very close to having valve related issues at high rpm. Valve spring fatigue over time and lose there seat pressure to (just think how old the B16 is now and on avarage how many miles they have done). Having that extra sping there as backup could be what stops the valves clashing or bouncing. This is just my opinion on it and why i wouldnt recommend it. Whether it works or it doesnt is another thing...

You can buy a valve spring removal tool from Euro Exports for the Honda B series (works with a few other different series too) Its not expensive and it allows you to remove the springs without removing the head. Its just good peace of mind if you ask me... Specially if you plan on driving the car hard for long periods of time.

 

[joe_thompson]

You could do it and be lucky and never face valve bounce but the only benifit of using b16b cams would be utiised when raising the rev limiter due to the profile of the cam shaft. As mentioned above b16b valve springs are dual and can take higher rpms and keep up. The single b16a springs where not designed to take much more than the intended rpm limit for the car, so you could suffer from valve bounce and then suffer from a mechanical failure i.e dropping a valve.

Also the valve spring retainers in the b16b are different and are intended for use of high rpms compared with the b16a retainers, this is why people normally use the whole b16b valve train when doing the swap.

Also with out correct mapping you wont see as good benefits as you would hope. You times will be out on both ignition and injector pulse.

My advise:

If your doing it, do it properly as you will only wish you had when it fails and will cost you alot more in the long run. you know im right

 

[Vtec6000]

You could do it and be lucky and never face valve bounce but the only benifit of using b16b cams would be utiised when raising the rev limiter due to the profile of the cam shaft. As mentioned above b16b valve springs are dual and can take higher rpms and keep up. The single b16a springs where not designed to take much more than the intended rpm limit for the car, so you could suffer from valve bounce and then suffer from a mechanical failure i.e dropping a valve.

Also the valve spring retainers in the b16b are different and are intended for use of high rpms compared with the b16a retainers, this is why people normally use the whole b16b valve train when doing the swap.

Also with out correct mapping you wont see as good benefits as you would hope. You times will be out on both ignition and injector pulse.

My advise:

If your doing it, do it properly as you will only wish you had when it fails and will cost you alot more in the long run. you know im right

Good advise

On stock p2t/p30 ecu with vtec point at 5500/5600 using CTR cams there is going to be a dip in power till you approach 6000rpm so ideally you will want a mapable ecu which can be custom programmed for your engine and as said above these cams will help the engine to make power past the stock rev limiter so you might aswell upgrade the valve springs so your tuner can raise the limiter and take advantage of the extra top end power.

 

[Topher-EK9]

Rich777 & Joe Thompson & Vtec6000
Good advice guys put forard in a readable and understandable way..
rich never ceases to amaze me how much knowledge he has..
i love all the tech stuff

 

[pornstar4777]

CTR Cams need rpms to show their potential...appropriate valvetrain a must!