B16A with CTR cam...


DedeSIR

DedeSIR

New Member
Joined
May 23, 2008
Messages
186
Hi !

I'm about to get a set of CTR cam for my JDM b16a and I was wondering
if I could run them without getting new valve springs.

My b16 redline is 8200 and the ctr is at 8400. I won't be reving more
than 8200-300 so I don't think it could be a problem.

Another thing is that I could get the spring from a integra GSR (b18c1).
Are those better spring, At least it would be dual spring on exhaust too...

Whats your opinion ?

Thanks
 
If you want a reliable setup get the appropiate springs, your oem springs where made for the B16A cams, if you install B16B cams you'll not have the correct springs for your setup, do you want to have a reliable setup or you want to take the risk?
 
rvm said:
If you want a reliable setup get the appropiate springs, your oem springs where made for the B16A cams, if you install B16B cams you'll not have the correct springs for your setup, do you want to have a reliable setup or you want to take the risk?
Click to expand...

well said rvm :nice:
 
I agree with rvm. While we've done an ITR intake cam with the stock SiR exhaust cam on an EM1 years ago and it ran fine, we were really hesitant to push it.

Get ITR springs and ITR LMAs and rev worry free.
 
Im running them on my a2 with a2 valve springs and pct ecu so rev limit at 8400 ish? been in months with 0 problems. However if you can get hold of some dual ones it would be best, just saying it does run ok without :)
 
the thing with valvesprings and keepers is that damage that happens over time is not something that is usually detectable.

I'm not trying to be an alarmist, but if you track your car frequently, don't be surprised if one day while driving to work, your car stops working in catastrophic fashion.

coil bind on the valvesprings in oversimplified terms is like flexing a paperclip back and forth, it's malleable until it goes snap.

In the end, it's up to the user if they want to chintz out on a couple hundred to a few hundred vs. the entire cylinder head and possibly the whole longblock.
 
Thanks for the comments...

I'm still not sure, but I started looking at spring and retainers...
I may wait to install the cam and get the money for spring and retainers
and rev it higher. Anyway winter is coming :mad:

I do track my car, and redline it everyday too...

Now I'm not sure CTR/ITR spring would be good with my heavy B16 valve.
Those spring have been design together for lightweight...

Spring that are too agressive wouldn't be good either..

What do you suggest ?? Are titanium retainers worth it ??

I already got new LMA with the new design like the K.
 
i would suggest full CTR valvetrain, as in valves/dual springs/retainers. they were designed surely with the ctr cams in mind so will perform best for your needs :)
 
fitted ctr cams to my mates b16a2 . very adviseable to fit the ctr valvetrain also as the springs in just now are made to work with the a2 oem cams fitted . adviseable to fit the ctr valvetrain as its using double valve springs where as the a2 only uses them on either the inlet or exhaust cam i cant remeber exactly which one it is but i know its only one of them

cheers
 
DedeSIR said:
Thanks for the comments...

I'm still not sure, but I started looking at spring and retainers...
I may wait to install the cam and get the money for spring and retainers
and rev it higher. Anyway winter is coming :mad:

I do track my car, and redline it everyday too...

Now I'm not sure CTR/ITR spring would be good with my heavy B16 valve.
Those spring have been design together for lightweight...

Spring that are too agressive wouldn't be good either..

What do you suggest ?? Are titanium retainers worth it ??

I already got new LMA with the new design like the K.
Click to expand...

Winter around the corner is good. Gives you an opportunity to save money for better parts during spring time :p

Using the ITR spring for the heavier 16A valve is ok. You could opt for the entire ITR package and get a valvejob as well to use the lighter ITR intake valves. The exhaust are the same.

Ti retainers are 50/50. I would suggest not using them unless you like inspecting them every few thousand miles. They are a wear item and don't be surprised if they snap on you - in effect ruining the head.

This is not to say the stock ones aren't capable of doing the same, just the rate of sudden failure is a lot lower than Ti incidents.
 
J700OCK said:
the a2 only uses them on either the inlet or exhaust cam i cant remeber exactly which one it is but i know its only one of them

cheers
Click to expand...

Used only on the intake side. Exhaust is single spring.
 
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