occur, and can eventually burn through. There are no kits to convert these engines from thru drive to thru transom exhaust. By using block off plates, inboard ...
1. System layout and construction must prevent cooling system discharge water from flowing back into engine and also must prevent seawater from entering engine via exhaust at any point.
When designing and installing exhaust system, it is very important that the following points be taken into consideration:
IMPORTANT: It is the responsibility of the boat manufacturer or installing dealer to properly locate the engine and install the exhaust system. Improper installation may allow water to enter the exhaust manifolds and combustion chambers and severely damage the engine. Damage caused by water in the engine will not be covered by MerCruiser Limited Warranty, unless this damage is the result of defective part(s). Determine if exhaust elbow risers are required by taking measurements (a) and (b), with boat at rest in the water and maximum load aboard. Subtract (b) from (a). If (a) minus (b) is less than specified in chart, select appropriate size exhaust elbow riser kit and exhaust extension kit that will correctly position exhaust elbow.
72700
Exhaust Elbow Measurement a - From Waterline to Reference Point (Top of Transom) b - From Highest Point on Exhaust Elbow to Same Reference Point (Top of Transom)
2. The exhaust hoses and pipes must not be higher than exhaust elbows at any point. 3. The exhaust outlet (for routing exhaust to outside of boat) must be located so that a minimum of 1/2 in. (13 mm) per foot (305 mm) downward pitch (drop) exists in the exhaust hose or pipe from the engine exhaust elbow to the outlet, with a minimum drop of 4 in. (100 mm) overall. (This is an American Boat & Yacht Council recommendation.) The drop must be constant so that a low spot does not exist at any point in the exhaust hose or pipe. 4. Exhaust outlet must be slightly above the waterline with boat at rest in the water and full load aboard. Exhaust outlet should be equipped with an internal shutter to prevent seawater from running back into exhaust system. The use of an exhaust flapper on each outlet also is recommended. 5. System must not cause excessive back pressure. Back pressure MUST NOT exceed 4 in. (100 mm) of mercury when measured with a mercury manometer at exhaust elbow outlets. Minimum exhaust hose sizes are given in chart. Minimum Hose Size
Model
(a) Minus (b) Must Be at Least
Model
Single
Dual
All
13 In. (330 mm)
All
4 In. (102 mm)
3 In. (76 mm)
IMPORTANT: Exhaust hoses must not restrict discharge water flow at exhaust elbow when installed.
Index 90-823226--1 996
GENERAL - 7A-1
6. Exhaust hoses must be connected to exhaust elbows so that they do not restrict the flow of discharge water from the elbow. If hoses are connected incorrectly, a hot spot in the hose can occur, and can eventually burn through. There are no kits to convert these engines from thru drive to thru transom exhaust. By using block off plates, inboard exhaust elbows, exhaust hoses and transom outlet fittings, some engines have been converted to thru transom exhaust. In addition to the preceding information, the following should be adhered to: • “Exhaust Elbow Measurement” (as previously outlined) must be checked. • Block-off plates (for thru drive exhaust system) must be able to prevent water from entering boat (Quicksilver Block-Off Plate Part Number 97350T). Refer to appropriate Stern Drive Manual. • Exhaust bellows (between gimbal housing and bell housing) should be removed to allow propeller to draw air. Refer to appropriate Stern Drive Manual.
Index 7A-2 –GENERAL
90-823226--1 996
THIS PAGE IS INTENTIONALLY BLANK TO ALLOW FOR CORRECTIONS OR ADDITIONS AT A LATER DATE
Before proceeding, drain water and/or coolant ... scratches, or water and exhaust leaks may re- sult. 3. ... Using new gasket, install exhaust manifold to cyl-.
Aerodynamic Chromed Steel. EPIQ. Bright Package. Ambient Lighting. Please see your local Peterbilt dealer to use Peterbilt PROSPECTOR to specify options ...
Replace the belts if the material is cracked, teeth are worn, or if swelling is evident. ... Inspect the belt tensioners for free movement and smooth bearings.
Anything which obstructs or resists the flow of exhaust gases from the ... ings to show me how they succeeded in keeping their crossover ... Now for the 64 dollar question, how do you form the thin wall ... Slip joints can be fairly easily made.
from manifolding the exhaust from pairs of cylinders such that the exhaust pulses ..... tubes exit the cowling and terminate as nearly parallel to the slipstream as ...
May 30, 1975 - Seems you never have enough of a good thing. Well ... of the things that you can and cannot do when it comes to .... After you have determined.
DISPOSITIF DBF110 D'AMPLIFICATION DU SYSTÃME DE VENTILATION. DES SÃCHOIRS Ã LINGE INSTRUCTIONS D' ... in order to isolate any vibration and prevent the transmission of sound through the structure. Be careful not to ... Install fan at least five fe
system with the assistance of a second person. 2006 MINI Cooper. 2002-05 ENGINE Exhaust Systems - Repair Instructions - Cooper (1.6L) R50/W10. Microsoft ...
BY BRIEN A. SEELEY, ED VETTER AND THE CAFE BOARD. The goal of this report is to improve the power, efficiency and reliability of aircraft exhaust systems.
haps an underlying blanket of asbestos. Do not locate the exhausts ahead of the carburetor intake or ahead of the air inlet to the oil cooler. Naturally, you would ...
pounds, fuel flow, wind incident to the propeller and ... change in local wind speed and direc- tion as the ..... Tabs= 1760°R = exit temperature. P = 2116 psf = sea ...
graphic oil analysis, borescope inspections, and digital engine monitors. ... of defense against exhaust valve failure. ... whether it is starting to burn or stick.
because we have the technology to detect these problems early. Anyone who ... www.eaa.org 107 ... The only problem with borescope inspections is that they ...
For over 30 years, Lycoming's parallel valve cylinders have experienced exhaust ... closely related to the volume of oil that flows to the rocker box of each.
ders (cross-talk). These are labeled by their cylinder of origin as the R .... Yagi et al17 have written an excel- lent paper on using induction system pulsations to ...
Because Lycoming and Continental engines operate at practically constant ... The combustion chamber entry of the incoming fuel â air charge begins during ...
fuel and air from the intake system. Such early ... manufacturers differ greatly even though they use the ... with notes on RPM, manifold pressure, fuel flow, static ...
Sponsored and Funded by the Experimental Aircraft Association and the Federal .... speed of a wave traveling through the pipe. ..... Bruce Arrigoni, who has extensive experience in dyno ... an exhaust pipe because the sonic ex- haust wave is ...
