NHGuy
Captain
- Joined
- May 21, 2009
- Messages
- 3,631
I'm looking for opinions on ignition stuff for my 89 Mercruiser 5.7 Litre, 260 HP, Type MCM. It has the Thunderbolt Ignition and it does pretty well considering. Considering the rotor tip is burned, the rotor connection points on the cap are corroded, and here is the biggie, the coil is cracking around the horn where the cable connects it to the distributor cap. I have not pulled any spark plugs yet but I plan to change them just because I don't know their history. The wires are OE and look nearly new.
I really didn't expect to find trouble, this boat was new to me this summer and I ran it about 200 hours since I put it in service this June. It always starts right up and when I crack the throttle it just about leaps unless it's carrying a full load. Fully loaded it will still plane out darn well quick compared to some of the toys I grew up using.
I'll also be getting a fuel pump this off-season since mine is on the reserve diaphragm.
So here is the question, replace with OE, copycats, or upgrades?
I'd love some opinions from folks who have liked or disliked various components or combinations. I don't plan to do any thing with the carb, the way it runs is great as far as I am concerned.
My boat is and has always been, used in fresh water. See my signature.
I noticed a little better top end with 89 Octane Valvetect fuel by the way.
ps. Channel Marine in the Weirs Channel, Laconia, NH has a great parts guy. He found the right circuit breaker to match the ones in my 20 year old dash board, oops, am I supposed to say binnacle?
I really didn't expect to find trouble, this boat was new to me this summer and I ran it about 200 hours since I put it in service this June. It always starts right up and when I crack the throttle it just about leaps unless it's carrying a full load. Fully loaded it will still plane out darn well quick compared to some of the toys I grew up using.
I'll also be getting a fuel pump this off-season since mine is on the reserve diaphragm.
So here is the question, replace with OE, copycats, or upgrades?
I'd love some opinions from folks who have liked or disliked various components or combinations. I don't plan to do any thing with the carb, the way it runs is great as far as I am concerned.
My boat is and has always been, used in fresh water. See my signature.
I noticed a little better top end with 89 Octane Valvetect fuel by the way.
ps. Channel Marine in the Weirs Channel, Laconia, NH has a great parts guy. He found the right circuit breaker to match the ones in my 20 year old dash board, oops, am I supposed to say binnacle?
