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  1. loco

    Slop in DP290 power steering

    Hi all, When I steer I feel a notchy feeling as I change direction. Looking at the power steering actuator, there's a little movement where the cable goes in that could cause that feeling. Is that normal, or is there a fix? Video of the piece moving here: slop Thanks in advance!
  2. loco

    Trim motor for old DP290

    Hi all, The tilt and trim motor seems to be jamming on my 1989 DP290 drive. The relays click, and I get +12 and -12V at the pins that feed the motor when I operate the switch, so it looks to be the motor that is shot. I see it's Penta part number 3587106, but found OEM penta parts to be...
  3. loco

    Holley carb - accelerator pump adjustment

    Hi all, I'm trying to get the accelerator pump set correctly on my carb, but something seems off. With the carb closed, I set the pump lever to just be touching the adjustment screw base - I can get a piece of paper in there, so can't get any more loose. However, at WOT, the spring is pushed...
  4. loco

    MSD 6m-3l worth it?

    Hi all, I have a 4.3 v6 vortec which has a delco est ignition. Would there be any tangible benefits to moving to an MSD ignition? From what I’ve read, they don’t seem to alter timing much other than setting low advance for easy starting, so doesn’t look like there’s be much in power gains, but...
  5. loco

    Garmin GMI10 NMEA connectivity

    Hi all, I have a Garmin GMI10 that I'm trying to send GPS data to using nmea 0183. I have other devices able to receive GPS coordinates from the same charter plotter, so I'm sure that is configured correctly and sending the correct sentences. So, Garmin recommended the following cable...
  6. loco

    Understanding how engine died - water on inlet and exhaust sides

    Hi all, this story goes back a couple years now. I'll try to compress the background as much as possible. Engine is a 4.3L V6 vortec. Raw water cooled. - had leaky inlet manifold (vacuum leak, not water). Had manual provided by engine supplier for non-vortec model and over-torqued inlet...
  7. loco

    New heads after water ingress, but lots of smoke from rocker cover breathers.

    Hi all, So, I have a 4.3 v6 vortec. We had (salt!) water ingress from a leaky inlet manifold. Unfortunately it took a while to get the engine out, and the mechanics found some of the valve seats were shot from corrosion. So, we replaced the heads, the engineer removed the sump to clean it, then...
  8. loco

    Rocker cover breather in a 4.3 V6

    Hi all, Long story short, I had to re-fit my inlet manifold as I had a vacuum leak in between the inlet manifold and top of the engine block. I used new gaskets, sealed it, torqued up etc. by the book. As part of it, I rebuilt the carb, using a lighter spring for the secondaries which are...
  9. loco

    Wiring colours for Garmin Fishfinder 400C transducer cable?

    Hi all, Long story short, I cut the connector on my airmar B60 transducer that connected to my Garmin 400C as I was replacing the Garmin with a Raymarine. However, that didn't work out, and now I need to revert, and of course the original connector has gone missing. So, I have a decent splicing...
  10. loco

    Penta steering actuator: fair amount of slop

    Hi all, Apologies, third steering post from me! I'm going over the whole system in detail this week. So, the actuator is a Penta 852741. No leaks on it, but where the steering cable goes in, I'm seeing a fair amount of slop. I get nearly a quarter turn of the steering at the helm before there...
  11. loco

    Steering - can it jam the pump?

    Hi all, You might have seen the thread where I'm looking for mounting bolts for my saginaw pump. I'm putting the sheared bolt down to metal fatigue, as it must be around 25 years old. However, two years ago, I had another issue with the power steering with the pulley being badly damaged, and...
  12. loco

    double ended studs for saginaw pump in UK?

    Hi all, I've had one of the double-ended studs shear on my saginaw power steering pump. Looks like they're hard to find in the UK, and it's going to cost $46 to deliver from the US! Does anyone know where I can get them, or something I can use instead? I think it's a 3/8-16 thread. I could just...
  13. loco

    Going B5 to C4, but heard C4 is less coarse pitch?

    Hi all, Quick background: My boat used to have a penta AQ205 with two barrel carb. I re-engined with a vortec 4-bbl, pushing around 220HP. Drive leg has always been a DP290 with B5 props. With the new engine, it tops out at 37kts at WOT, and I think it hits 4800RPM, if I can believe my...
  14. loco

    DP290 retro fit anode for stainless props or hand anodes from props?

    Hi all, I've managed to source some stainless props for my DP290. However, I hear they burn through anodes much faster than aluminimum props do (I'm in salt water in a permanent wet mooring and need to use zinc anodes). I've heard of a couple of solutions: 1) retro fitting an extra anode to...
  15. loco

    Raymarine E7D flickering screen - workshop/rebuild guide?

    Hi all, my E7D has a badly flickering screen. I've seen a few posts about cleaning contacts, etc to get it working again, so was going to take it apart to have a look around. Raymarine want £300 + VAT to fix it which is pretty extortionate for an older unit like this. Any workshop manuals or...
  16. loco

    Convert Airmar B117 from Garmin to Raymarine?

    Hi all, I've got a Garmin Fishfinder 400c, with what I believe is an airmar B117 with 20 degree tilt transducer. It has a six pin plug, though looks like only three wires are fitted in the cable. I've recently acquired a Raymarine E7D. The boat's only just gone back in the water, so I'm hoping...
  17. loco

    Thinner oil for raw water cooling?Any

    probably a well-trodden path, but I’m looking into engine oils again, as it’s time to change my oil. ive been using motul 15w50 marine oil, but I’m beginning to think it might be a bit thick, as all the other inboard oil I see for sale locally is usually closer to 10w30. As I’m running a 4.3 v6...
  18. loco

    4.3 V6 Edelbrock & MSD for performance?

    Hi all, I have a 4.3 V6 Vortec with 4bbl carb. I'm looking for a bit more torque and pickup without swapping to a V8. I'm thinking an edelbrock inlet manifold to replace the gm12550460 manifold I have already. Also, it has a Delco EST ignition. I'm wondering if the MSD 6M-2L ignition unit...
  19. loco

    Lower than usual oil pressure reading

    Hi all, I'm finding that the oil pressure reading on my old Penta gauges (1990's analogue gauges from an AQ205a) is reading lower than usual. It would previously be at the top of the green, and would then creep to be a little higher than max level at higher RPMs. The gauge now tends to sit...
  20. loco

    4.3 V6 consuming oil, fumes from one rocker cover vent

    Hi all, So the symptoms are as follows: On the left hand bank, totally normal amount of fumes when running (some blow-by fumes when the engine is hot and running at speed) On the right hand bank of cylinders, a fairly steady release of fumes once the engine is warm. This is the engine that had...
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