Flowing Heads

thats what i mean 2500 .00 for heads that must be alot of shovel . got less than that in my 98 . grant ya . i did the labor . but hell cams 400.00 pistons and bore work 500 . gasket set cometic top end kit 195.00 .

If you are willing to pay it Baisley has some heads you can git done for 2500.00
But If'n I remember correctly they are for a certain type of pistons and all.
Some of the best heads I've ever seen was done by Wolfgang Grasser.
I watched his heads for about 5 yrs. And he just kept gettin better and better to where he is now.
Everybody that gets them really like them.
ONly thing I don't like, the newer bikes have electronic compression releases.
When you do a set of heads you have to weld around the Combustion chamber. Well when you do that you weld up the hole for the compression release that is electronically . I do not want manual compression releases.
I'm gittin Old and I want it my way.
He is never happy. He continues to try to improve the set before with his flow bench.
He's wanting to win Daytona Shootout every year too.

Exactly what I meant and knew the numbers but wanted Johnny tondo some surfing. The inversion has a lot o do with where you want your cam to perform. The kind of build you want. Put it in the right place for your build and ou blow right past it without even noticing. Put it in the wrong place(wrong cam) and could be at roll on at passing speeds and very noticeable!

we always flow thru a manifold,a stack will give exagerated #`s.also alot of dyno shoot out winners heads dont make the best street heads,so dont be sucked in by that either.a decent set of street heads may not have the PEAK flow that some guys making all kinds of claims have,but will make more power at usable rpm`s.we`ve done everything from mild to gas dragbikes to nitro bikes to dyno only builds,very different port contures for each application

The flow numbers are taken at the valve seat?

not following ya,what do you mean? flow #`s come from the amount of air (in CFM) going thru the port at a givin valve lift

i was just kidding...forgot to say lol

Don't know about Johnny but you got me curious..interesting topic and when I get the time to really dig into it I'll understand the physics behind it. good thing i'm leaving my bike stock for a while.

I'll throw this in for Johnny

http://books.google.ca/books?id=aSK...EwAQ#v=onepage&q=cam intake reversion&f=false

Also, a good 2 into 1 exhaust will help prevent this. True duals always have it. If you take the breather off you will see actual air/fuel come back out of the carburetor/throttle body at a certain throttle position.

I know what reversion is. I experienced it on my previous set of pipes that I had on my Sporty. Now that I put a good set of pipes on my Sporty (Which are not 2-1), I can appreciate the value of a (truely) good set of pipes. I like the V&H TD but I know that they are holhing me back a little. I would love a good set of D&D FC's but they are really expensive!! What does one do????

Ture duals loose it on the bottom end.

Ok, I have been messing with my new computer program and I am experiencing a small issue. I have been told that flow data is taken in h2O not Hg. Well, my computer program allows me to enter flow data, but in Hg. Is there a conversion that can be done or are the numbers similar enough to where I cam use the h2O numbers that I have?

Don't forget its messured in inches of water . Hg would be grams . Is there a metric to standard conversion inthe soft ware maybe ? ? Maybe I'm wromg ? ok im wrong way wrong im thinking grams of air like mass air flow reading . hg was inches of mercury . what a dumb ass . oh well .:roflmao:

Not that I have seen. I will get that worked out.

Thanks....

Inches of water, wc, inch water column (inch WC), inAq, Aq, or inH2O is a non-SI unit for pressure. The units are by convention and due to the historical measurement of certain pressure differentials. It is used for measuring small pressure differences across an orifice, or in a pipeline or shaft.[1] Inches of water can be converted to a pressure unit using the formula for pressure head.
It is defined as the pressure exerted by a column of water of 1 inch in height at defined conditions for example 39 °F (4 °C) at the standard acceleration of gravity; 1 inAq is approximately equal to 249 pascals at 0 °C.
Alternative standard conditions in common usage are 60 °F, or 68 °F (20 °C), and depends on industry standards rather than on international standards.
In North America, air and other industrial gasses are often measured in inches of water when at low pressure. This is in contrast to inches of mercury or psi for larger pressures. One usage is in the measurement of air ("wind") that supplies a pipe organ and is referred simply as inches. It is also used in natural gas distribution for measuring utilization pressure (U.P., i.e. the residential point of use) which is typically between 6 and 7 inches WC (6~7" WC) or about 0.25 psi.
1 inAq = .036126 psi, or 27.68089 inAq = 1 psi.
1 inH2O = 248.84 pascals (60 °F)[2]
= 2.4884 mbar or hectopascals (60 °F)
≈ 2.54 cmH2O (4 °C)
≈ 0.0024558598569 atm
≈ 1.86645349124 torr or mmHg (0 °C)
≈ 0.0734824209149 inHg (0 °C)
≈ 0.0360911906567 PSI

1 bar equals 14.50 psi 29.53 inHg 10.20 mH2O 33.46 ftH2O
2 bar equals 29.01 psi 59.06 inHg 20.39 mH2O 66.91 ftH2O
3 bar equals 43.51 psi 88.59 inHg 30.59 mH2O 100.4 ftH2O
4 bar equals 58.02 psi 118.12 inHg 40.79 mH2O 133.8 ftH2O
5 bar equals 72.52 psi 147.6 inHg 50.99 mH2O 167.3 ftH2O
6 bar equals 87.02 psi 177.2 inHg 61.18 mH2O 200.7 ftH2O
7 bar equals 101.5 psi 206.7 inHg 71.38 mH2O 234.2 ftH2O
8 bar equals 116.0 psi 236.2 inHg 81.58 mH2O 267.6 ftH2O
9 bar equals 130.5 psi 265.8 inHg 91.77 mH2O 301.1 ftH2O
10 bar equals 145.0 psi 295.3 inHg 102.0 mH2O 334.6 ftH2O
11 bar equals 159.5 psi 324.8 inHg 112.2 mH2O 368.0 ftH2O
12 bar equals 174.0 psi 354.4 inHg 122.4 mH2O 401.5 ftH2O
13 bar equals 188.5 psi 383.9 inHg 132.6 mH2O 434.9 ftH2O
14 bar equals 203.1 psi 413.4 inHg 142.8 mH2O 468.4 ftH2O
15 bar equals 217.6 psi 442.9 inHg 153.0 mH2O 501.8 ftH2O
16 bar equals 232.1 psi 472.5 inHg 163.2 mH2O 535.3 ftH2O
17 bar equals 246.6 psi 502.0 inHg 173.4 mH2O 568.7 ftH2O
18 bar equals 261.1 psi 531.5 inHg 183.5 mH2O 602.2 ftH2O
19 bar equals 275.6 psi 561.1 inHg 193.7 mH2O 635.6 ftH2O
20 bar equals 290.1 psi 590.6 inHg 203.9 mH2O 669.1 ftH2O
21 bar equals 304.6 psi 620.1 inHg 214.1 mH2O 702.6 ftH2O
22 bar equals 319.1 psi 649.7 inHg 224.3 mH2O 736.0 ftH2O
23 bar equals 333.6 psi 679.2 inHg 234.5 mH2O 769.5 ftH2O
24 bar equals 348.1 psi 708.7 inHg 244.7 mH2O 802.9 ftH2O
25 bar equals 362.6 psi 738.2 inHg 254.9 mH2O 836.4 ftH2O
30 bar equals 435.1 psi 885.9 inHg 305.9 mH2O 1004 ftH2O
35 bar equals 507.6 psi 1034 inHg 356.9 mH2O 1171 ftH2O
40 bar equals 580.2 psi 1181 inHg 407.9 mH2O 1338 ftH2O
45 bar equals 652.7 psi 1329 inHg 458.9 mH2O 1505 ftH2O
50 bar equals 725.2 psi 1476 inHg 509.9 mH2O 1673 ftH2O
55 bar equals 797.7 psi 1624 inHg 560.8 mH2O 1840 ftH2O
60 bar equals 870.2 psi 1772 inHg 611.8 mH2O 2007 ftH2O
65 bar equals 942.7 psi 1919 inHg 662.8 mH2O 2175 ftH2O
70 bar equals 1015 psi 2067 inHg 713.8 mH2O 2342 ftH2O
75 bar equals 1088 psi 2215 inHg 764.8 mH2O 2509 ftH2O
80 bar equals 1160 psi 2362 inHg 815.8 mH2O 2676 ftH2O
85 bar equals 1233 psi 2510 inHg 866.8 mH2O 2844 ftH2O
90 bar equals 1305 psi 2658 inHg 917.7 mH2O 3011 ftH2O
95 bar equals 1378 psi 2805 inHg 968.7 mH2O 3178 ftH2O
100 bar equals 1450 psi 2953 inHg 1020 mH2O 3346 ftH2O
110 bar equals 1595 psi 3248 inHg 1122 mH2O 3680 ftH2O
120 bar equals 1740 psi 3544 inHg 1224 mH2O 4015 ftH2O
130 bar equals 1885 psi 3839 inHg 1326 mH2O 4349 ftH2O
140 bar equals 2031 psi 4134 inHg 1428 mH2O 4684 ftH2O
150 bar equals 2176 psi 4429 inHg 1530 mH2O 5018 ftH2O
160 bar equals 2321 psi 4725 inHg 1632 mH2O 5353 ftH2O
170 bar equals 2466 psi 5020 inHg 1734 mH2O 5687 ftH2O
180 bar equals 2611 psi 5315 inHg 1835 mH2O 6022 ftH2O
190 bar equals 2756 psi 5611 inHg 1937 mH2O 6356 ftH2O
200 bar equals 2901 psi 5906 inHg 2039 mH2O 6691 ftH2O
210 bar equals 3046 psi 6201 inHg 2141 mH2O 7026 ftH2O
220 bar equals 3191 psi 6497 inHg 2243 mH2O 7360 ftH2O
230 bar equals 3336 psi 6792 inHg 2345 mH2O 7695 ftH2O
240 bar equals 3481 psi 7087 inHg 2447 mH2O 8029 ftH2O
250 bar equals 3626 psi 7382 inHg 2549 mH2O 8364 ftH2O
275 bar equals 3989 psi 8121 inHg 2804 mH2O 9200 ftH2O
300 bar equals 4351 psi 8859 inHg 3059 mH2O 10037 ftH2O
325 bar equals 4714 psi 9597 inHg 3314 mH2O 10873 ftH2O
350 bar equals 5076 psi 10335 inHg 3569 mH2O 11709 ftH2O
375 bar equals 5439 psi 11074 inHg 3824 mH2O 12546 ftH2O
400 bar equals 5802 psi 11812 inHg 4079 mH2O 13382 ftH2O
425 bar equals 6164 psi 12550 inHg 4334 mH2O 14218 ftH2O
450 bar equals 6527 psi 13288 inHg 4589 mH2O 15055 ftH2O
475 bar equals 6889 psi 14027 inHg 4844 mH2O 15891 ftH2O
500 bar equals 7252 psi 14765 inHg 5099 mH2O 16728 ftH2O
550 bar equals 7977 psi 16241 inHg 5608 mH2O 18400 ftH2O
600 bar equals 8702 psi 17718 inHg 6118 mH2O 20073 ftH2O
650 bar equals 9427 psi 19194 inHg 6628 mH2O 21746 ftH2O
700 bar equals 10153 psi 20671 inHg 7138 mH2O 23419 ftH2O
750 bar equals 10878 psi 22147 inHg 7648 mH2O 25091 ftH2O
800 bar equals 11603 psi 23624 inHg 8158 mH2O 26764 ftH2O
850 bar equals 12328 psi 25100 inHg 8668 mH2O 28437 ftH2O
900 bar equals 13053 psi 26577 inHg 9177 mH2O 30110 ftH2O
950 bar equals 13779 psi 28053 inHg 9687 mH2O 31782 ftH2O
1000 bar equals 14504 psi 29530 inHg 10197 mH2O 33455 ftH2O

i know you copied and pasted that...you cheater.

Would you want to type that much stuff. Heck No.

Thank God for PDF files. And cut and paste