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  1. billywhizz

    4" heat exch end caps, flat or concave?

    i have 485 merc with a 4" heat exchanger, the cap at the intake end keeps leaking, i tried various sealer new rubber etc, but no luck still leaking, the caps are flat but when i look on the internet the pics show what apears to be slightly concave/dome shaped caps, this leak is worse since i...
  2. billywhizz

    Alpha1 blocked nostril??

    At the bottom of the housing on the transom there are 2 holes about 1/2" one either side, usually when i run the engine on the muffs they are puffing water out in a pst pst sort of way, since I replaced the impeller etc, the stb side is spitting out more than the port, is this a cause...
  3. billywhizz

    water dripping out of new shift cable

    I replaced the impellar, housing (top and bottom) new shift cable, reassembled and tested with muffs on, all good runs fine in and out of gear perfect, just about to relax when i saw that i have a drip of water coming from the end of the drive shift cable, steady drip, What have i...
  4. billywhizz

    Too many gaskets for water pump

    At last all the parts have arrived, so now i get to replace the impeller and pump housing on my ALPHA R, I followed the instructions but seem to have 2 gaskets the thinest ones, left over?? have i gone wrong or does the sierra kit contain extras for other aplications?
  5. billywhizz

    mercruiser shift shaft seals

    And so on to the next job, the sterndrive has the upgraded brass bushing already fitted to the bell I am unable to see from my manual as to whether i have to replace the entire bushing complete with the seals or if I can just replace the seals?thanks
  6. billywhizz

    Another mystery??

    Or is it part of the first one, I found this in the lower case right at the front next to the shift shaft, what is it this time? there was a black rubber bush around the shaft but sitting outside on top of the impellar housing, is it supposed to be in the recess of the housing around...
  7. billywhizz

    Another mystery??

    I just opened the bag of gubbings that came with my new Alpha one shift cable, and there is a little black plastic bush about 1/2" and looks like a top hat? can somebody give me an idea what and where it go,s thanks
  8. billywhizz

    hinge pins stuck/ shift cable bellows

    Had an awful job to undo the hinge pins, so when they go back in is it ok to use copperslip or a similar anti sieze compound? and is there a knack or easier way to get the shift cable outer in to the small and of the bellows? I am struggling with it...
  9. billywhizz

    Whats This?

    when Removed my Alpha 1 drive unit from the bellows housing to replace the shifter cable this fell out on the floor? I cant see where it goes or what it does? any ideas? cheers
  10. billywhizz

    Merc 470 Heat exchanger PSI ??

    So my new (used) heat exchanger has arrived, looks fine but should I pressure test it before I fit it? what pressure do I test it at? and i can see the raw water inlet and outlet but how does the raw water get from one chanber to the other? they seem to have solid partitions? and yes i...
  11. billywhizz

    Which fuel pump? Merc 485 3.7 L

    Ok, so it is carb rebuild next on my agenda, also looking through the forums it seems that It might be a good idea to bring my 25 year old engine into the 21st century with an electric fuel pump? What say the wise ones? here are my questions will an electric pump perform better than the...
  12. billywhizz

    Merc 485 3.7L float bowl leak?

    Rochester 2bbl carb, where does all the petrol go? accepted it cant syphon back out, so does it really all evapourate? starts fine if left for a few days but after 2 weeks have to crank for ages to get the fuel back up, tested the pump at 7psi ok? also hard to start when hot, so if the...
  13. billywhizz

    Merc 485 voltage regulator water hose

    The voltage regulator has long since been unused as the engine has an Alternator fitted, but I notice the raw water intake pipe is looking a bit skank so want to replace,Will it be ok to by pass the regulator and go straight to the Heat exchanger?am i going to cook anything? thanks:)
  14. billywhizz

    Mercruiser 485 3.7 Holley Carb?? anybody seen this?

    I decided at 25 years old and no success with the rebuild that my carb needed replacement, Holley carbs seem to have all the:confused: good references, so i made a few enquirys only to be told that there is no Holley carb that will fit a 485, Dissapointed , any body know different?
  15. billywhizz

    hard starting when hot 485 merc

    Still she is a pig to start when hot, i got her hot let her idle for a couple of minutes, then switched off, then i quickly took off the spark arrestor and had a gander down the carb, there did not seem to be any fuel dripping but there was quite a lot of steamy looking vapour swirling about...
  16. billywhizz

    Mercruiser 485 Oil leak?

    i have 1983 485, there seems to be oil leaking from under the inlet manifold? any ideas?
  17. billywhizz

    Timing issue mercruiser 485

    I just fitted pertronix ignition with flamethrower coil, and in accordance with their instructions i checked the timing,,i found that at 650 rpm it was set at TDC so i adjusted slowly to 5 degrees before TDC,made no difference, by the time i got to 8 degrees before TDC the engine was at...
  18. billywhizz

    What do i do with this?

    Still trying to get my poor starting issue resolved, have now arrived at the throttle cable, i think it will benefit from some lubrication, BUT what is the weird little threaded barrel/tube type of "thingamebob" that is connecting the eye on the end of the cable to the remote, mercruiser...
  19. billywhizz

    Alternator, correctly wired? merc 485

    Not sure if my alternator conversion has been done right, the alternator has three wires coming out, the two reds have been spliced together and connected to the red that was connected to the regulator, and the other a smaller blue wire has two small electronic components soldered to it...
  20. billywhizz

    How many times?

    How many times should my engine turn over before it starts? always starts fine when cold but once out to sea and drifting a wreck or starting after 20/30 mins it turns over between 6 and 10 times before it starts? is this normal for a 25 year old engine? the spark is weak, orange, instead of...
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