If I took some b16a cams and threw them in my b18c1 how much power(estimate) would it gain. Also is it worth it or just shoot for itr?

 

it would lose power, lol.

 

you will probably lose 10+ WHP

 

the b16a2 arent bad camshaft's

 

Im fairly confident that the B16 cams are worse than the GSR cams... Even if they arent, I cant see a performance gain from putting them on the GSR motor.

 

b18c1
intake
primary 1.3154
mid 1.4322
secoundary 1.3601

exhaust
Primary 1.3036
mid 1.4063
secoundry 1.3536

b16a2
intake
Primary 1.3027
mid 1.4278
secoundary 1.3771

exhaust
primary 1.2907
mid 1.4063
secoundary 1.3658

 

My fault b16A Jdm

 

jdm b16a would be the same as usdm b16a

ive got all three camshaft's b16a b16a2 and b18c and im going with b16a2
there all jdm but im sure they didnt change camshaft spec's for usdm

 

Well what makes the b16a(p30) have the same amount of power as a b18c1 with .2 less liters.

 

i believe the usdm has lower comp piston's to jdm and jdm ecu

 

Higher compression for one, also the tune is different and the JDM B16 makes it's power at a much higher rpm.

JDM B16 makes 168 hp at 7800 rpm. USDM B18C1 makes 170 hp at a 7600 rpm. So at the hp peak the USDM makes almost 5 ft-lbs more torque. Plus, the B16 torque peak is practically at the power peak (7300 rpm).

The B18C1 peaks at a comparatively lower rpm (6200) and it makes much more torque at peak torque (128) than it does at peak power (120). So the B18C1 has a fatter powerband befitting its larger displacement and a 170 whp B18C1 will be a little bit faster than a 170 whp B16.

 

with out sounding like a mad tyt jdm guy lol
how come the b16a has a loader/agressive crossover than b18c

this has been my experiance

 

huh? a loader cross over? seriously, just because you have loud VTECH(I know, there is no "H") doesn't mean your car is "tight".....Your experience is none other than a rice kind of guy.

The GSR Intake manifold is extremely different than the normal plenum, single runner types. The GSR intake manifold has a plenum, with 2 types of runners. Long skinny runners for low end, power and shorter larger runners for peak performance. The GSR intake manifold also has a ECU controlled vacuumed butterfly valves(IAB) that controls this whole operation of switching from small, long runner, to larger shorter runners. VTEC @ 4400 rpms under the small, long runners and 6600-6800rpms open up to the shorter fat runners under the factory tuned computer. I haven't seen or heard about tuners tweaking the IAB's and VTEC points for maximum power, but I have see a lot of GSR's run the ITR style Intake manifold.

Use the GSR cams. End of story....

 

What's manis have to do with this topic?

 

^^^That's intresting! ive alway's been intrested why they changed the design for the b18c1. They probly dont play with the iab's becouse the nippa's have got it set prety close to perfect.

0o0o0ohH DidNt Y0u Kn0w L0ader VTeK FasTer thE CaR lol

 

He was wondering about the "loader" VTAK. The GSR IM makes the crossover not as loud as say the single runner/plenum style intake manifolds.

 

B16s also have more of a torque bump when they get on the VTEC cam

 

As far as "same power, less displacement" goes. From my experience, if you run the same setup in a large displacement engine (same cams/head/compression), you get the same overall power just at a lower RPM range.

Basically your head/cam determine how much air/fuel get into the engine, the displacement simply moves it around in the RPM band.

Example, your head will flow 21 million cc's of air at x valve lift. If you run a GSR engine, you suck in 7063cc per stroke (really every other stroke). So that puts max. power at 5946rpms. In a B16 setup it doesnt pull down that much air until you hit 6734rpms. Overall, you are still sucking in 21 million ccs of air and are going to make 170hp in either setup.

There are obviously more factors than this, but it is a pretty good rule of thumb. In my opinion, the later B16 cams are damn near identical to the GSRs. The early years are slightly smaller but honestly, compared to "real" cams, the difference doesnt even matter....seriously, you might squeeze 2hp difference out of them. Hell, even the Type Rs (which are much larger) are smaller than any Stage I cam on the market.

Unless you are going turbo, get some better NA cams. If you dont have the money for better ones, dont waste the time/effort/money to switch them out in the first place.