[signalpuke]

Every time the valves open they spend a certain duration at each point of the lift curve

Joe was talking about signal strength. The flow numbers are not as big of a deal at lower lift as the signal.

 

[6spd_EK]

The RBB should have never been made LOL.

i was wondering what you'd say when you saw this thread LOL

Rob - you need to find an uncut RSP manifold!!! RRC vs RSP vs Mod'd RSP 2.4 test. We'll get that tq from 5-7k up above 200 lb/ft in no time

 

[allmotor98]

i was wondering what you'd say when you saw this thread LOL

Rob - you need to find an uncut RSP manifold!!! RRC vs RSP vs Mod'd RSP 2.4 test. We'll get that tq from 5-7k up above 200 lb/ft in no time

Im down. Next spring will ge it back on the dyno and try a few things.

 

[allmotor98]

i was wondering what you'd say when you saw this thread LOL

Rob - you need to find an uncut RSP manifold!!! RRC vs RSP vs Mod'd RSP 2.4 test. We'll get that tq from 5-7k up above 200 lb/ft in no time

Im down. Next spring will get it back on the dyno and try a few things.

 

[BlackNDecker]

Im down. Next spring will get it back on the dyno and try a few things.

Linked back to this thread from the for sale section...

Still have plans for more testing?

 

[CHILD]

This is interesting.

Does the 06-08 RBB head flow better than the 04-05, or where the changes to the 06-08 just in the camshafts and oversized intake valves?

 

[6spd_EK]

Linked back to this thread from the for sale section...

Still have plans for more testing?

As of right now testing will probably be back on for spring... But some things in life are more important than k-series and testing, like friends, family. Its still winter here in the northeast, we have a couple more months before it is officially spring.

This is interesting.

Does the 06-08 RBB head flow better than the 04-05, or where the changes to the 06-08 just in the camshafts and oversized intake valves?

Luke at 4piston has flow tested 04-05 vs 06+ RBB and has seen 1st the larger valve did not make a difference. With proper porting and a proper valve job you could possibly pick up some flow in some areas to make a larger intake valve worth while

 

[DRAG]

I still love tests like this. You have a direct comparison on a simple engine...a head with a small port and high air speed VS a bigger port with better flow at higher lift and slower air.

 

[Figment-The-Dragon]

:like:

 

[CHILD]

Luke at 4piston has flow tested 04-05 vs 06+ RBB and has seen 1st the larger valve did not make a difference. With proper porting and a proper valve job you could possibly pick up some flow in some areas to make a larger intake valve worth while

I wonder why honda made the change if it effectively made no difference at all.

 

[6spd_EK]

I wonder why honda made the change if it effectively made no difference at all.

I don't know... maybe they had a ton of 36mm valves in inventory & wanted to use them up lol your guess is as good as mine.

or maybe they thought the larger (stock) valves would have more contact area at the seat & possibly stay slightly cooler or transfer heat better, who knows, just guessing in the dark

 

[BlackNDecker]

Bumping this up again. In for updates now that things are starting to thaw out...:devil:

 

[K4NEB]

Hey guys I just picked up an RSP K20Z4 head for my K24A3 (same as your K24A2)
Im guessing this was a good move?

What cams where used in this comparison?

 

[Vaikis_]

Hey guys I just picked up an RSP K20Z4 head for my K24A3 (same as your K24A2)
Im guessing this was a good move?

What cams where used in this comparison?

good move.
stage 2 cams if to be more precise IPS KME camshafts.

 

[NABeastRR]

Dc 2.2

 

[BlackNDecker]

Dc 2.2

Who were you responding to? This build is using IPS KME cams as discussed here:
http://www.k20a.org/forum/showpost.php?p=1018100&postcount=1

 

[K4NEB]

:-(

 

[K4NEB]

Your post is pretty random...I'm not sure what the intended contribution to this conversation was? I'm not trying to be inflammatory, but we have a thread specifically for posting random dyno graphs. You should delete your post in this thread and move it to the dyno registry thread:
http://www.k20a.org/forum/showthread.php?t=34644

Sorry. Thought it might have been helpfull to have another dyno sheet to look at that's all.

Bum smack received :-(

 

[6spd_EK]

back from the dead with another test on a different motor

2008 stock TSX (longblock) with:
RRC IM, Injen Intake, P2R TB spacer, Header & exhaust

before stock RBB head with stock valves (+1mm oem intake)

after RSP with Ferrea 6000 (std size) valves. Gained 19whp up top! fyi we were able to eliminate the tq dip from 5000-5700 with a stepped intake w/velocity stack. Getting that to fit is another story LOL

 

[CHILD]

So that's basically the difference between the worst flowing head and the best, right? (excuse my noobness lol)