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  1. S

    Cold Fouling of Spark Plugs Weber 4 Barrel Carb

    One of my engines has black deposits on the plugs. I suspect rich fuel mixture so I have been looking at the choke today. I followed the manual and checked the operation of the vacuum diaphragm and made some adjustments to the choke pull off, bending the linkage to set it at 15/64 in. I also...
  2. S

    Impeller Problem? Alpha 1 gen 2

    Back on the Settimo Velo getting ready for sea trials at last! However, My counter rotating drive isn't picking up cooling water from the flush muffs following the service I did. Nothing getting through to the engine. Standard rotation drive is fine, so I got that right! The manual calls for the...
  3. S

    Cut Out Switch

    I've just been through the installation manual and set up the shift cables, making sure the shift cut out switch remains centred - as per the instructions in the installation manual - when shifting into and out of forward and reverse. I was expecting the shift cut out to be activated by shifting...
  4. S

    Power Trim Fluid

    One of my new power trim units wants topping up. I guess it has Quicksilver power trim and steering fluid in - it is a yellow / orange colour - as supplied by Mercruiser. I don't have any of the Quicksilver product to hand but see that the owners manual says that SAE 10W-30 can be used as an...
  5. S

    Sterndrive electrolysis and antifouling

    I'd like to antifoul my Alpha sterndrives which are fitted with stainless props and protected by the Mercathode system. The boat will be used in a high fouling area and kept afloat for extended periods, so it is not going to be realistic to leave the drives untreated. Mercruiser recommend...
  6. S

    Problem Fitting Mercathode Electrodes

    I'm having a problem fitting Mercathode electrodes on the underside of my gimbal housings. I made up a trace wire, as described in the service manual, to guide the electrode leads through the rubber grommet in the centre of the hydraulic connector block. However. I cannot get the trace wire...
  7. S

    Used Alpha drives: What to look for?

    I'm going to look at a used pair of Alpha 1 Gen 2 drives, fitted with stainless props. They are no longer installed in the boat, so I cannot test them running. I am told that they are about 10 years old with around 300 hours on them. What are the main things that you would look for to assess...
  8. S

    Transom shift cable routing

    The shift cable comes out of the left hand side of the transom and I am wondering whether to route it up between the bellhousing and transom on the left hand side of the engine, or to loop it under the bellhousing and bring it up on the right hand side. Does it matter? Is there a best practice?
  9. S

    Engine Alignment

    I bought myself an alignment tool on eBay http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=370503133199&ssPageName=STRK:MEWNX:IT which I've been using to fit twin V6s in my Settimo Velo. This is not an OEM tool but I hope it is fit for purpose as they have good feedback ... I've fitted...
  10. S

    Securing front engine mounts to bearers.

    My Settimo Velo has 3 inch wide solid wood engine bearers. In the previous (remote v drive) installation the engines were secured to these using a kind of steel saddle. This was held in place with horizontal bolts through the engine bearers and had a couple of nut plates let into the top for the...
  11. S

    Core Plugs

    What material are Mercruiser core plugs made from? Of my twin 1993-95 manufactured V6 engines, one has all brass core plugs and the other has one brass (which looks new) and three of what appear to be galvanised steel (as they are magnetic). They all appear to be in good condtion. Did...
  12. S

    Transom Assembly Sterndrive Shaft Seal

    I am wondering if I have a part missing from one of my transom assemblies ... S/No 1A174836 has what appears to be a rubber seal - for the sterndrive shaft - fitted on the inside of the gimbal bearing, whereas S/No 1A196092 does not. I have looked at a workshop manual and a parts list and they...
  13. S

    Gantry hoist or crane for engine installation?

    I am thinking about the best way to get my 2 V6s into the boat. The aft deck is about 6 foot off the ground and the boat is on stands, so I am either going to need a crane with operator or to build a gantry over the boat. I will probably need to take them in and out a few times, as I can see...
  14. S

    Alternative to Mercruiser remote oil filter kit

    I am thinking about fitting remote oil filters on my twin LXV6s (93 - 95) as the filters are going to be difficult, although not impossible, to get at when the engines are installed. The Mercruiser kit seems quite expensive to buy new, compared with possible alternatives such as...
  15. S

    Dua Power Trim

    I'm just starting to look at wiring up my power trim for two drives. I have a Quicksilver dual throttle control, which has the two trim switches built into one of the throttle levers. I have identified the 5 wires relating to port up / down, stbd. up / down and common. However, these wires are...
  16. S

    Through Transom Exhausts

    I've decided to fit through transom exhausts on my twin V6 installation. I've familiarised myself with the contents of the Merc Manuals - block off plate installation, height of riser above waterline, angle of exhaust pipe etc. Merc do not say much on the subject and don't seem to provide much...
  17. S

    Exhaust Block Off Plates

    I've decided to dump the Y pipes and take the exhausts through transom, so I'll be needing block off plates. Does anyone know what these are made of? I'm just wondering about electrolysis between disimilar metals and corossion (as all of this will be hidden away behind the bellhousing)... Are...
  18. S

    Should I do anything about a minor oil leak?

    My engines underwent an initial test run yesterday, out of the boat. They both started first time and seem to run well! I have just uploaded a short video of one engine running, on the Facebook link given below. After a 15 minute run the only issue I have found is a thin trace of oil along...
  19. S

    Power steering hoses

    I'm thinking of having a pair of Power Steering hoses made up (as the Mercruiser hoses seem very expensive here in the UK!). Does anyone know what the spec is for the threads and pipes on the end fittings i.e. for the two on the power steering ram and the one on the pump?
  20. S

    Platinum spark plugs for 4.3

    My 4.3 LX V6 (4 bbl) engines arrived yesterday, so I am just starting to go through them. They have Bosch HR9BPX platinum plugs fitted, rather than the NGK BR6FS as specified by Mercruiser. Also the Bosch plugs are gapped at around 60 thou whereas the NGK gap is specified at 35 thou ... Anyone...
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