0115562 JOHNSON CAP, Carburetor body


0115562 CAP, Carburetor body JOHNSON BJ2REDE, BJ2REUD, BJ3ROEDE, BJ3ROEUD, HJ2DRETC, HJ3REIC, HJ3RENR, HJ3RETC, J2RECS, J2REEC, J2ROEOB, J2RTSIA, J2RTSSR, J2WREES, J2WRSIR, J2WRSSC, J3REEC, J3ROECS, J3ROEOB, J3RSDE, J3RSNF, J3RSOD, J3RSRE, J3RSTB, J3RTLSIA, J3RTLSSR, J3WREES, J3WRSIR, J CAP
0115562 CAP, Carburetor body JOHNSON
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03-08-2022

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Original VW Washer - N 0115562
Number on catalog scheme: 4
 

BRP JOHNSON entire parts catalog list:

BJ2REDE, HJ2REDE, HJ2RSA, J2ROEDE, SJ2REDE 1996
BJ2REUD, HJ2REUD, HJ2RSK, J2ROEUD 1997
BJ3ROEDE, HJ3ROEDE, HJ3RSA, J3ROEDE, SJ3ROEDE 1996
BJ3ROEUD, HJ3ROEUD, HJ3RSK, J3ROEUD, SJ3ROEUD 1997
HJ2DRERM, HJ2DRETC 1993,1994
HJ3REIC 1991
HJ3RENR 1992
HJ3RERM, HJ3RETC 1993,1994
J2RECS, J2RSS 1998
J2REEC 1999
J2ROEOB 1995
J2RTSIA, J2RTVSIA 2001
J2RTSSR 2000
J2WREES 1999
J2WRSIR 2001
J2WRSSC 2000
J3REEC, J3RLEEC 1999
J3ROECS, J3ROLECS, J3RSS 1998
J3ROEOB 1995
J3RSDE 2006
J3RSNF 2002
J3RSOD 2005
J3RSRE 2004
J3RSTB, J3RSTF 2003
J3RTLSIA, J3RTSIA, J3RTVSIA 2001
J3RTLSSR, J3RTSSR 2000
J3WREES 1999
J3WRSIR 2001
J3WRSSC 2000

Information:

Flow = Gallons per minute (L/min)Vd = Engine displacement [cubic inches (liters)]Ne = Rated speed (rpm)66,000 = constant for gallons285.785 = constant for litersA water lift muffler is also common in some of the smaller pleasure craft. If a water lift muffler is to be used the following are some points to pay close attention to.1. Size the muffler outlet for a minimum exhaust velocity (gas only) of 5000 ft/min at rated engine power and speed. The following formula will give the maximum pipe diameter, "De" that can be used to insure the 5000 ft/min velocity. De = The maximum water lift exhaust outlet pipe diameter [inches (mm)]Qe = Exhaust flow rate from the muffler [cfm (m3/min)]2. The tank itself should be of sufficient size. A rule of thumb would be at least 8 cubic inches per rated horsepower.3. The inlet pipe to the tank should be truncated near the top of the tank.4. The outlet pipe should extend to near the bottom of the tank (about 1 inch from the bottom) and should be angle cut (mitered) to increase exit gas velocity at lower loads and flow rates.5. A siphon break should be installed between the exhaust elbow and the high point of the outlet pipe from the muffler.Dry Exhaust
The dry exhaust system has some typical points that need to be considered as well.1. A flexible connection at the engine exhaust outlet. No more than 60 pounds of exhaust piping weight should be supported on the flexible connection.2. Flexible connection(s) are installed on the horizontal portion and on the vertical stack of the exhaust system.3. Horizontal portions of the exhaust system are sloped away from the engine.4. A spray shield/rain trap is used on the exhaust outlet. The exhaust gas flow rate for a given engine and rating can be obtained from the TMI system. It can be closely estimated by using the following formula. Qe = Exhaust gas flow rate [cfm (m3/min)]Te = Exhaust gas temperature [°F (°C)]Hp = Engine rated horsepower (kW)After you have determined the exhaust gas flow rate the exhaust system backpressure can be calculated using the following formula. P = Exhaust system backpressure [inches of water] or kPaLte = Total length of piping for diameter "d" [ft (m)]d = Duct diameter [inches (mm)]Lte is the sum of all the straight lengths of pipe for a given diameter "d", plus, the sum of equivalent lengths, "Le", of elbows and bends of diameter "d". Straight flexible joints should be counted as their actual length if their inner diameter is not less than "d".Le = equivalent length of elbows in feet of straight pipeStandard elbow - Le (ft) = 2.75 × d (inches)Long elbow - Le (ft) = 1.67 × d (inches)45° elbow - Le (ft) = 1.25 × d (inches) "Le" results are in feet but "d" must be in inchesLe = equivalent length of elbows in meters of straight pipeStandard elbow - Le = 0.033 × d = (metric)Long elbow - Le = 0.020 × d = (metric)45° elbow - Le = 0.015 × d = (metric) "Le" results are in meters but "d" must be in mmQe = Exhaust gas flow [cfm (m3/min)]Se = Specific weight (density) of exhaust gas [lbs/cu. ft. (kg/m3)]The specific weight of the exhaust gas is calculated using the following formula. Se = Specific weight [lbs/cu. ft./kg/m3)]Te = Exhaust gas temperature [°F (°C)]d = pipe diameter [inches (mm)]The values of Lte, Se, Qe, and d must be entered in the units specified above if the formula is to yield valid results for backpressure.To get the total exhaust pressure you must add to the answer from the above formula the pressure drop of the muffler. The pressure drop for Caterpillar mufflers is available in the TMI system.Exhaust gas velocity should also be checked. If the velocity is too high, excessive noise or whistle may occur and inner pipe and wall surfaces may erode at an unacceptable rate. As a rule of thumb, the velocity is best kept to 18,000 ft/min or less. The velocity can be calculated using the following formula: Ve = Exhaust gas velocity [ft/min (m/min)]Qe = Exhaust gas flow rate [cfm (m3/min)]d = Pipe diameter [inches (mm)]


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