BC spec 4 -VS- BC spec 3+
12-07-2004, 05:43 PM
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BC spec 4 -VS- BC spec 3+ on the dyno
here is the deal- same dyno , same engine , only difference is the cams. i previously dyno my car w/ the bc3+ and was pleased w/ the #'s as well as the tq curve. here is a link to my previous dyno w/ the spec 3+
https://honda-tech.com/zerothread?id=989055
tonight i dynoed my car w/ the spec 4's and made some solid gains in the top end. the two graphs looked the same up till 7000+ rpm where the spec 4's started to pull away. the graph will be up shortly and you will have to wait for the graph to see the final #"s
enjoy
i want to give a big thanks to Blown90hatch for the tuning love.
https://honda-tech.com/zerothread?id=989055
tonight i dynoed my car w/ the spec 4's and made some solid gains in the top end. the two graphs looked the same up till 7000+ rpm where the spec 4's started to pull away. the graph will be up shortly and you will have to wait for the graph to see the final #"s
enjoy
i want to give a big thanks to Blown90hatch for the tuning love.
12-07-2004, 06:52 PM
#3
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Re: BC spec 4 -VS- BC spec 3+ on the dyno (na200whp)
Shameless Plug
Here are your graphs stunna. NA cars rule!!!!
Final tune: 221.88whp / 155.48 trq
Overlay of the StageIII cams vs. the Stage IV cams:
Here are your graphs stunna. NA cars rule!!!!
Final tune: 221.88whp / 155.48 trq
Overlay of the StageIII cams vs. the Stage IV cams:
12-07-2004, 07:20 PM
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Re: BC spec 4 -VS- BC spec 3+ on the dyno (mtber)
good numbers, i would like to see how much time you can shave off in the 1/4 mile. the car should pull like a freight train, after 7K rpms
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12-07-2004, 08:26 PM
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Re: BC spec 4 -VS- BC spec 3+ on the dyno (Blown90hatcH)
i thought it was very interesting how the graphs over lay so well. till 7000 the look to be the same cam. i was very happy to keep the TQ with the the large cam lobes.
cam gears were - intake +3 exhaust +1
the car was making power w/ each degree adv on the intake but i stoped at +3 to be safe.
cam gears were - intake +3 exhaust +1
the car was making power w/ each degree adv on the intake but i stoped at +3 to be safe.
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12-07-2004, 08:47 PM
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Re: BC spec 4 -VS- BC spec 3+ on the dyno (na200whp)
Nice , I ended up at +3+3 for the day.. You need to lwoer vtec slightly.. I'm at 4800 but you can see on your plot that you can go lwer as well..Looks like you picked up 40whp at 8500..sick!!!!!!!!!
12-08-2004, 05:33 AM
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Re: BC spec 4 -VS- BC spec 3+ on the dyno (HONDABROMANDUDE)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HONDABROMANDUDE »</TD></TR><TR><TD CLASS="quote">Boo these teasers! Leave them for the appearance forum </TD></TR></TABLE>
ditto
</TD></TR></TABLE>ditto
12-08-2004, 06:27 AM
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Re: BC spec 4 -VS- BC spec 3+ on the dyno (BryanPendleton)
The power gained after 7700 is impressive. How does the car feel now? I wish someone with stock bore (81mm) could dyno these bad boiys!
Good Job
Good Job
12-08-2004, 10:36 AM
#17
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Re: BC spec 4 -VS- BC spec 3+ on the dyno (6ghatch)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 6ghatch »</TD></TR><TR><TD CLASS="quote"> WOW, I did not realized that the 3's drop off as early as they do! Can't wait to get my BC4's in.
</TD></TR></TABLE>
something seems to be up with his setup. I don't know much about BC3's but it's just weird how his motor is done after 7500rpm with those cams. Seems like something is limiting the amount of air coming in. I would try a different IM. I mean you made impressive numbers with the BC4's but I feel the motor is choked for air somewhere. I would guess it's the IM. Even ported out I just don't think it has enough plenum volume for a 2L motor past 7500rpm. Tbone had the same problem. He was dying off at 8k or less then changed mani's and pulled further. I think with a bigger plenum manifold those BC4's will shine some more.
Like I said I don't know enough about BC3's but hell, my S2S1 cams pulled hard until 7800.
That motor is choked. Open it up!!
s
WOW, I did not realized that the 3's drop off as early as they do! Can't wait to get my BC4's in.</TD></TR></TABLE>
something seems to be up with his setup. I don't know much about BC3's but it's just weird how his motor is done after 7500rpm with those cams. Seems like something is limiting the amount of air coming in. I would try a different IM. I mean you made impressive numbers with the BC4's but I feel the motor is choked for air somewhere. I would guess it's the IM. Even ported out I just don't think it has enough plenum volume for a 2L motor past 7500rpm. Tbone had the same problem. He was dying off at 8k or less then changed mani's and pulled further. I think with a bigger plenum manifold those BC4's will shine some more.
Like I said I don't know enough about BC3's but hell, my S2S1 cams pulled hard until 7800.
That motor is choked. Open it up!!
s
12-08-2004, 05:20 PM
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Re: (spooncivic1)
the bc3's and bc4's have pretty close to the same duration but with big difference in lift...hence the top end difference....im gonna dyno my skunk2 stg2 cams against the bc 4's....outta be interesting
12-08-2004, 05:25 PM
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Re: (2k.civic.si)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2k.civic.si »</TD></TR><TR><TD CLASS="quote"> skunk2 stg2 cams against the bc 4's....outta be interesting</TD></TR></TABLE>
The vtec lobes on those 2 cams are pretty similar actually.
The vtec lobes on those 2 cams are pretty similar actually.