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    Volvo AQ171A Tappet ?

    I was putting my engine back together tonight and instead of sticking that tappets in and greasing them in so they do not fall out as I put the head on I tried something different. I tried to just put the camshaft on after I put the tappets in. That was a horrible idea because I chipped the...
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    Volvo AQ171 A (double overhead cam) need Help!!!!!

    I just had my engine rebuilt (bored, new pistons, rings and everything). I put the engine in the boat and the crankshaft would turn using wrench when timing belt and everything is hooked up. I put the motor in the boat hooked up the lower unit and tried to turn it over with the starter; I did...
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    Volvo AQ171C Need Oversized Pistons

    I am having my 89 Volvo AQ171C bored 30 over since I got water in the cylinders. I need pistons and I cannot find them. My mechanic can make them for 500 but I would like to find them a little cheaper. Does anyone have an idea where I might find some?
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    88 AQ171 C Volvo (DOHC) HELP!!!!

    I have an 88 Volvo aq171c that was taken apart and rebuilt and now I need to put it together, and nothing was marked by the person who took it apart. I have the 1 cylinder at TDC, but I do not know how to align the the double overhead cam. I have a book at it doesn't mention anything. I have...
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    Lowers Unit?

    I have a 75 mercury 850 that revearse gear stop working, so i purchase a lower unit from a 78 mercury 800. Is the 800 and 850 the same gear type or will this affect my motor? Thanks for any help.
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    HELP Mercury 850 timing

    I have a 1975 mercury 850 that I have rebuilt with the help of this forum. I have replaced everything. The engine has 150 psi on each cylinder, great spark and great fuel pressure. I have even replaced the reeds, but I cannot get the engine to idle at 800 rpms and still drop into gear. I do...
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    Choke ?

    I have a 1975 Mercury 850 That i just rebuilt. The engine has been idling a little rough and i am only able to get the rpms down to about 1100-1050 and still be able to put the engine into gear. I can get the rpm's down to 550rpms with the engine in gear but it will stall when i go from...
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    Prop pitch ?

    I have a 1975 Mercury 850 that i just rebuilt, and it is on a 15 bass boat. I am currently running the engine at 3700-3800 rpm's at 28 mph with a 21 pitch prop. The WOT is 5500rpms. I would like to get as much speed as possible. I am able to get a sum what decent hole shot with the 21 pitch...
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    1975 Mercury 850 ?

    I have a 1975 Mercury 850 That i have rebuilt new boysen reeds, piston rings, rebuilt carbs, new gaskets, water pump, everything. I have been trying to tune the carbs using clams great link and sync process and i cannot get the engine rpm's below 1100 rpms without stalling when it goes into...
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    fuel problem

    I have a 1975 merc 850 with WMK-17 carbs on it. I have rebuilt both carbs cleaned everything. I tuned the floats to manual specs. If the engine is cold and not running i can prime the bulb and it will stay hard for along time. Once i put the motor in my test tank and fire it up after aboat 10...
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    piston ring ?

    i just rebuilt one of my 1975 merc 850 motors. After putting it in the water i found a water leak. When i went to replace the gasket two of the holes were so corroded that it would not hold a bolt. I retaped the holes but they kept stripping, so i tightened them as best i could but it is...
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    lower unit question

    I have a merc 850 motor number 4095289 it is a 1975. I was wondering if a 1978 80 hp lower unit would work?
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    Prop pitch ?

    I have a 75 merc 850 with a 21 pitch prop. I am running between 4400-4500 rpm's and i am having trouble plaining with a full tank of gas and another person in the boat. I have a 15' bass boat. The boat goes about 34-37 mph with two people in the boat. I was wondering what pitch i should go...
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    79 merc 850 Idle question, what should my rpm's in nuetral?

    I was wondering what my rpm's should be at when my engine is at idle in nuetral. My book says 550-650 in forward, which is where i am at, but it idles at about 1200 rpm's in nuetral. I just want to make sure i will not damage my gears.
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    1975 Merc 8500 Wont go into reverse!!!

    I just picked up another merc 8500 that was rebuilt by a mechanic so it runs great, but when the motor is in the water or test tank it will not go into reverse. When the motor is on the muffs it will go into reverse ok, but it grindes a little when going back into neutral. When I try to put it...
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    Gas Tank ?

    I put my new 8500 in the water today and hooked it up to a cheep plastic tank ( i have had two motors with the same problem so i thought it might be the tank). I put a new anti-syphon connector on the plastic tank and it ran about 38-40mph across the water, but it died after about 20 min and...
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    New Motor same problem

    Hello, I had a 75 merc 8500 that would not go past 5-10 mph, i could not get my 15' boat to plain( I rebuilt the entire motor). I went out this weekend and boat another 8500 that was rebuilt by a mechanic, and know i have the same problem. When the engine is accelorating my buddy has to prime...
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    75 merc 8500 wont start

    HEllO, I have just finished rebuilding my merc 8500 and now it wont start. I had a fuel problem that i fixed, the engine is pumping fuel perfectly. I originally had problem with getting the engine to run more than 5mph, so i rebuilt the entire fuel system from the tank to the carbs. While in...
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    No fuel pressure on a 1975 merch 8500

    I checked my fuel pressure from the line coming off the fuel pump by cranking the engine and the fuel coming out is speratic. It comes out as a trickle and then it stops altogeter. When I prime the bulb it comes out fast. I replaced the diaphram and check valves about 3 weeks ago, so i was...
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    Still having fuel problems on 75 merc 8500

    I am not getting enough fuel in the engine. When i start the engine i have to give it full throttle to keep it running (and then it barly idles), and if i prime the bulb it revs the engine to were it should be with the throttle that high. When the engine is off after running it, if i prime the...
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