The setup:
B16A2
10,85:1 compression ratio
99 ron gas
DC 4-1 header
55mm cat-back exaust, metal cat
CTR PCT cams
adjustable cam gear
hondata s200 ECU
CTR valvetrain

The blue line is the skunk2, the red is stock intake


there are some bands that the loss is up to 8 hp..
It could be less at the mixture was a bit rich there but again i suppose skunk2 intake is good only above 7800 with these cams..


Modified by svistras at 11:57 PM 10/13/2004


Modified by svistras at 11:58 PM 10/13/2004

 

did you play with the cam gears?

I'm sure the 55mm exhaust is too restrictive.

 

the car is not mine. It is a friends.

He did not play with the gear nor with hondata.
The expirement was if by replacing the stock intake with a skunk2 with his current setup (kinda b16b replica) there are any gains.
As seen there are no gains unless someone goes wild revving.
I also said that in the bands with loss there was like 12,9:1 A/F which can be fixed but dont expect more than stock intake in any case...

The 55mm is kinda restrictive for top end power, but the losses were in mid-range....

 

You're going to lose a little bit around 4500 typically, but the top end should pick up what you lose in the middle. This is what I have seen.

Also remember, the CTR and ITR both use the manifold that the Skunk2 is a copy of.

 

even with 2,25 inch from 2,125 that is the current one i dont believe there would be great gains with this setup.
Remember, the goal here is 8400 rpms. He doesnt want to squeeze it more..

I believe that they aint worth it for this kind of mild tuning.
If someone goes wilder cams, revs to 8800 or more, and 2,25 inch exaust it sure does..
but with his setup definatelly not.

also note that i made a mistake. The blue curve was skunk2 and red was stock...
i edited that to correct it

 

once again, another one bites the dust. this is a fact, if you are not revving above 8400rpm in a b16, the p30 intake manifold with mild runner porting will destroy the itr style im all the way through the entire powerband. its not until 8400rpm that the itr style im matches the p30's peak hp, and, you just proved it.

 

edited because I just saw that he had the power curves switched.

 

i would also like to test how the PCT valves (that are supposed to have better flow design) will perform in this b16b-replica modding..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by svistras &raquo;</TD></TR><TR><TD CLASS="quote">i would also like to test how the PCT valves (that are supposed to have better flow design) will perform in this b16b-replica modding..</TD></TR></TABLE>


i dont know much about b motors however i do know that a b16 block is a b16 block and a ctr block is a p72block/gsr/teg type r block. its a destroked 1.8 block. also the deckhieghts would be different. to have a b16b replica u would need the actual crank and rods and p72block

 

that's true, but i dont believe someone will gain by putting on a destroked b18c block..
The major performance gains in b16b compared to b16a come from cylinder head, intake - exaust , flywheel, ECU.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by svistras &raquo;</TD></TR><TR><TD CLASS="quote">that's true, but i dont believe someone will gain by putting on a destroked b18c block..
The major performance gains in b16b compared to b16a come from cylinder head, intake - exaust , flywheel, ECU.
</TD></TR></TABLE>

the pistons also play a major role in the b16b motor

 

i dont see an air intake in the list of mods..does he have one? if not that may make a big difference with that manifold..also since it flows more it would probably make more power on the road with more air entering the intake system...just a thought...

 

also true that the pistons could be used , but the major gain from the pistons is the higher compression they provide.
My friend has a spoon head gasket and milled head to achieve b16b's comp ratio though.
So the only loss compared to the pistons is maybee the less weight in moving parts.
Anyway with his current setup 161 at the wheels is pretty much what b16b's also achieve in stock form so we could say his motor is kind of a replicated b16b

He had the stock air-box in the dyno session with a K&N drop-in filter and removed resonator, also using a pipe to get air from the front to the airbox when comparing both intake manifolds.
A more free intake could help get better results but I dont believe the 8whp gap would close even with better intake/reprogram.

also think that the stock b16a2 intake manifold would also perform better with a less restrictive intake as the skunk2 would so the differences wouldnt be great.

 

Well I think it's pretty obvious that he is being restricted up top. Also interested to see the a/f of each run.