- Joined
- Jul 23, 2011
- Messages
- 52,434
Yes, I purchased that pump on eBay. Won’t fit without making new fuel lines, cant just turn the in and outlet around either. Rubber hoses on a boat kinda bother me when original was a metal line. is this common practice to just fabricate something to fit on a boat .
bolt patter won’t line up, couldnt reclock the two halves. I did try but They can’t be reclocked in any direction. couldn’t find a diaphragm kit either for the old pump I have. But this is all redundant now as I have the only pump that is correct application Without modifying lines.
Google it…
I’m guessing you’re not familiar with coils and this modification Due to lack of old parts not being made any longer. The coil apparently over heats if gap is not enlarged. It’s a common thing to change plugs depending on the coil I’m reading. Hotter coils 40,000 volts need bigger gaps. Seems to make sense I was looking for the plug and gap info.
It’s a pretty common thing to do in an old auto engine.. but a boat engine is climbing a hill all the time. Under a complete load at all times in other words.. you don’t want to run on the raggedy edge with a boat. A hotter coil doesn’t ‘need’ a bigger gap, the plug gets an arc, the energy not used is wasted.Electricity will only draw what it uses. It won’t draw extra, just because. More goes on in the combustion chamber than you may understand, and at 100% duty cycle, any shortcomings will be found quickly. Pre ignition is a very common problem with marine engines
uuuhhh.... most marine ignition systems stock run more than 40KV. no need to change spark plug gap
Ok sounds good, I’ll stick with same old plugs. I’m sure that’s my problem, boat guys here, car guys are my only source. Car guys say gaps used to be in the 30s because coils were not nearly as hot as old days. Thus gaps have gotten bigger with fuel injection and hei ignition Over the years. Old point systems had capacitors to dissipate energy not used. So when car guys say need bigger gaps with hotter coils then it makes Perfect sense to me, but you are saying because of a boat. I do not need to worry about the gap in the plugs going from 32. Let’s say 45-ish. Correct ? Just trying to fully understand boat logic as different from auto logic ? Thanks for taking the time.
Just leave the gap and plugs at spec. Which if it’s 32, then run that. The flame front in the chamber is right with those timings. Points in boats were common far longer than autos and the reason is reliability
actually, gaps got bigger to ignite leaner mixes to pass emissions. combustion chamber design and shape determines speed of flame propagation needed. that in turn determines which gap is needed to balance nox, power, detonation based on fuel BTU, compression ratio, etc.
Sounds good, will see what happens
I don’t have points ? Also plug number in old owners man isnt available on Amazon what plug do people use in this engine. 302 Ford ? Any ideas ? Thanks for input
in 1994 ford cobra seaswirl omc 40,000 v really. Was told they were less in the old days…lol I’m getting so much info. Glad I’m getting so much different info here in the boating world.
go to napa with the number from your manual.
Thanks, just thought the people here would have the info. Trusting parts guys is usually a mistake. As I’m finding out boats and cars are much different. Will start at the auto parts place I guess then.
