Wolf Racing
Expert Class
Posts: 138
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posted July 06, 2007 06:50 PM
HEAD
Here's our head flow chart. Done in 2004 and going strong. Standard valves in use. hope the pics work.
at 1427, Muzzys cams and valve springs we go mid to high 230rwhp. Very tastey then with 150 shot of NOS!!!
Wolf
   
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Wolf Racing
Expert Class
Posts: 138
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posted July 06, 2007 06:58 PM
HP run when we went to C16 fuel.
Old girls been running strong ever since.
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NOX
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posted July 06, 2007 07:40 PM
Dang, I want one...........
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Y2KZX12R
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posted July 07, 2007 03:59 AM
I see you tested at 10"..... So to convert to 28" test pressure multiply by 1.67
So 150 cfm at 10" of water is 250.5 cfm at 28"
It also happens 1.67 is the cfm to hp conversion number.
There is about a 16hp loss from the engine to the rear wheel on a jynojet dyno.
233 rwhp + 16 hp = 249 crank hp / 4 cyl = 62.25 hp per cyl x 1.67 = 104 cfm x 2.5 (for average intake rate) = 260 average rate cfm.
Stock intake flow of 134 cfm(@10") x 1.67= 224 cfm @ 28"
Ported intake flow rate of 150 converts to 250 @ 28"
This is basic generalities but you can see patterns here right?
It gets real interesting when you work with detailed numbers on a real test head and engine and dyno the results and plot trends.
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oldkawboy
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posted July 07, 2007 07:00 PM
I was gonna say all that but Jim beat me to it! :-)
Dan
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osti33
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posted July 09, 2007 02:37 PM
quote:
I was gonna say all that but Jim beat me to it! :-)
Dan
LOL!! Me too. 
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entropy
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posted July 10, 2007 02:27 AM
 Edited By: entropy on 10 Jul 2007 03:31
interesting shape of the hp curve from 150mph up.
Wolf,
do you have the rpm/hp curves???
BTW: Thanks much for openly posting yr results! 
I guess i understand the secrecy thing which seems to be sprouting up here & there, but it is dissapointing never the less.
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Wolf Racing
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Posts: 138
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posted July 11, 2007 11:50 PM
Yep,
I'll get some rpm/hp curves in the next few days when I'm at the workshop.
No secrecy with our own Wolf Racing ZX12 race bikes. We decided when we started our team that we would openly let popel know what we were doing.
Now, as for customers bikes mods and bits, no way. Lips are sealed.
The secrecy thing is what makes racing what it is though. Always good trying to guess and read between the lines.
Just so everyone knows though, what I print is exactly what comes from our own experiences.
You guys have a great site here and I've learnt some real good things here.
The curve is only upto 11,800rpm. We still only have the standard ecu onboard. The engine is made for 13,000rpm. It hits the rev limiter like jamming on the brakes!!
Old thing still has a lot left we think.
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entropy
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posted July 12, 2007 02:50 AM
go-wolf-go! We'd love to see the hp, tq curves w/rpm!!!
thanks for being so open.
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Y2KZX12R
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posted July 13, 2007 02:51 AM
Karl, i may have numbers to post tonight. Gonna try and get those heads tested today.
We had too get 4 vintage SBF shelby engines done this week for this weekends races somewhere out west. There all finished now. I'll get Alex on those heads today. I doubt i can velocity map the ports today as well thou. But i'll try and post some flow numbers.
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entropy
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posted July 13, 2007 02:54 AM
Jim,
4 Shelby vintage engines??? man o man i gotta get to yr shop someday!
Thanks for the update!!
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Y2KZX12R
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posted July 13, 2007 09:03 AM
Edited By: Y2KZX12R on 13 Jul 2007 10:09
Hot off the press Karl..... I couldnt flow test the carpenter head yet... we have a few other heads that have to get done today also.
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Wolf Racing
Expert Class
Posts: 138
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posted July 13, 2007 03:14 PM
Jim,
Cool. reat looking curves.
Here's our HP/Torque/RPM
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entropy
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posted July 13, 2007 04:59 PM
Edited By: entropy on 14 Jul 2007 01:43
Wolf,
yr motor has a dip like mine only yrs is moved 500 rpm higher. Gotta be something to do about that dip, eh??
or
are you keeping it over-rich (12.4) there for spray???
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entropy
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posted July 13, 2007 05:03 PM
Jim,
AWESOME that you were able to get to my big valve head with all the work you are doing!!!
I don't know how the 250 @ .415 compares to Wolf's head results??? Our hp curves look kinda similar (only his is higher  )
Can't wait to see how Ryan's Carpenter head flows. Any guesses? Gotta be better than my shade tree head.
Man o' man this stuff is FUN!
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entropy
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posted July 14, 2007 12:44 AM
Edited By: entropy on 14 Jul 2007 01:52
quote:
Wolf,
yr motor has a dip like mine only yrs is moved 500 rpm higher. Gotta be something to do about that dip, eh??
or
are you keeping it over-rich (12.4) there for spray???
also, can you say what lift cam you are using on the intake??
also, yr tq curve is VERY interesting; "normal" built 12's peak at 7900-8100, you have a dip there and double peak on both sides. Tq peak at 9000??? GREAT!! How did you do that???
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Wolf Racing
Expert Class
Posts: 138
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posted July 16, 2007 12:29 AM
Hi,
Cams are the Muzzys race cames. We also use the recommended valve springs and retainers. Standard valves. Brash seats and brash valve guides.
Lift is 10.2mm on inlet and 9.9mm on exhaust.
A/F is just the way it was in the room when we dynoed it.
Dip is wheel spin!!!  And no, we can't seem to get that dip out!
It's a pig on the dyno. It rips tyres, spins and just is plain nasty. Monkey gets ready like he's going to ride a Moto GP bike!
Cheers,
Wolfman
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entropy
Moderator
Posts: 8671
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posted July 16, 2007 03:43 AM
wolf
thanks for the info.
Have you tried various Cam CL's to get rid of the dip??
I am gonna try & get rid of the dip inmine by big valve head and different cams. Great science fair project!
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osti33
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posted July 16, 2007 09:50 AM
quote:
Can't wait to see how Ryan's Carpenter head flows. Any guesses? Gotta be better than my shade tree head.
Man o' man this stuff is FUN!
I am interested to see how it goes as well. I bet that it has one chamber that doesn't flow worth a damn. lol.
Great project indeed!!
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madmike
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posted July 16, 2007 12:09 PM
Hey Jim if your interested... I have a Spaz head with SS valves stock sizes. I would love to send it out to you for a compairson... just let me know.
Mad Mike
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Y2KZX12R
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posted July 16, 2007 02:05 PM
Ryan, I couldnt believe how dystroyed that chamber is. What a mess.
I'll try and get that carpenter head on the bench tomorrow.
Mike, is it ported? any chamber work?
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osti33
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posted July 16, 2007 03:03 PM
quote:
Ryan, I couldnt believe how dystroyed that chamber is. What a mess.
I'll try and get that carpenter head on the bench tomorrow.
Mike, is it ported? any chamber work?
LOL!!
I don't mess around. When I blow something up I blow it ALL the way up.
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entropy
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posted July 16, 2007 04:24 PM
Osti,
you seemed to have sharpened yr skillz at blowing shit up since you started hanging around the Texas crew...
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MadMike
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posted July 16, 2007 04:32 PM
quote:
Ryan, I couldnt believe how dystroyed that chamber is. What a mess.
I'll try and get that carpenter head on the bench tomorrow.
Mike, is it ported? any chamber work?
Yes it is a full "spaz" race port and polish. he is midwest guy here in Iowa built one of the fastest if not the fastest stock wheelbase busa ever...
Karl and I chatted about it some when I went down to see him a few weeks ago...
anyway just say the word and I will ship it out! if you would like to see it...
I am looking for some photo's I know I have them somewhere? if I can find them I will post them up...
MM
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osti33
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posted July 16, 2007 08:28 PM
quote:
Osti,
you seemed to have sharpened yr skillz at blowing shit up since you started hanging around the Texas crew...
Indeed.
Must be the garage Barbie's sabotaging my bike when I'm down there.
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