Modification info.

[Jon.Bucy]

1)Can anyone tell me what size conn rods I have in my 2001, 3.0ltr,v-6, 225 Johnson? (big or small)
2)Will the old 2.7 heads bolt on? Will I get more power?
3)What do I need to run the gold lightweight flywheel? (different stator, top end bearing etc)
4)What would be a good alternative ignition system?(not necessarily racing)
Thanks Jonny.

[jphii]

1: Small
2: Low end
3: V4 top cap & stator (I think, it's been a while)
4: Yamaha or MSD.

What do you want to do with it?

[Jon.Bucy]

1: Small
2: Low end
3: V4 top cap & stator (I think, it's been a while)
4: Yamaha or MSD.

What do you want to do with it?

4) Which Yamaha system (what does it include) & what is MSD?

It's going on a heavy 21 Challenger, so I want to get the most power & speed possible out of it.

Thanks Joe.

All other opinions & options welcome.

[jphii]

Yamaha system from an 84-89 V6. Aside from wiring it in, you need a new top cap to use it. Basically the new cap is a cross between the OMC bearing and bottom half and the Yami top half to accommodate the Yami electronics. Also need to have the Yami flywheel bored for the OMC crank. No limiter, very reliable spark.

The only way you could run MSD (http://www.madefi.com/MSD.htm) is with an alternator. Probably not worth it.

But, I forgot to mention the new digital packs from Rapair. That may be the way to go. That way you don't have to worry about the stock pack going tits up when you're offshore.

["HITMAN"]

MSD is multi spark discharge like what people use on cars and many other racing application's. If you want there's a company in alabama I think it's called Taylor Marine or MADEFI if i am correct they may be able to help or Galen Burden from down south.

[Jon.Bucy]

MSD is multi spark discharge like what people use on cars and many other racing application's. If you want there's a company in alabama I think it's called Taylor Marine or MADEFI if i am correct they may be able to help or Galen Burden from down south.
Thanks, Jonny.

[Jon.Bucy]

Yamaha system from an 84-89 V6. Aside from wiring it in, you need a new top cap to use it. Basically the new cap is a cross between the OMC bearing and bottom half and the Yami top half to accommodate the Yami electronics. Also need to have the Yami flywheel bored for the OMC crank. No limiter, very reliable spark.

The only way you could run MSD (http://www.madefi.com/MSD.htm) is with an alternator. Probably not worth it.

But, I forgot to mention the new digital packs from Rapair. That may be the way to go. That way you don't have to worry about the stock pack going tits up when you're offshore.
Joe, trying to stay as bolt on as possible. It's hard to get things properly modified here unless someone has already done it (and is willing to share) plus cost to do anything here is :eek: :rolleyes:.
May be I can find someone on S&F who has something and is willing to sell, hense bolt on.
Thanks again.:)

[jphii]

Well Jon, I just listed a ton of parts. If you're interested in a block, I can help ya there too.

[Jon.Bucy]

Well Jon, I just listed a ton of parts. If you're interested in a block, I can help ya there too.
Could you post a link to your thread on those parts?
Thanks Joe.

[jphii]

http://forums.screamandfly.com/forums/showthread.php?t=154869

[lokinutz]

I wouldn't go with the light gold flywheel if you need anything more than a 9 amp charging system. Sounds like 9 amps wouldn't keep up with your boat.
How high do you plan on spinning the motor?
May want to keep the stock system with the Rapair box, or do Joe's Yamaha system.

[Jon.Bucy]

I wouldn't go with the light gold flywheel if you need anything more than a 9 amp charging system. Sounds like 9 amps wouldn't keep up with your boat.
How high do you plan on spinning the motor?
May want to keep the stock system with the Rapair box, or do Joe's Yamaha system.
Thanks lokinutz, I dont plan on turning motor over 7000, motor dosn't have enough mods to make a hp difference over 7k.
Being I'm only looking for bolt on hp at this time I think that the Rapier system is probably the way to go, I know that they make a stator but didn't know they made anything else. Can you guys tell me what they make for my motor and how to find them (do I just google Rapier).
The mods that I currently have are shaved heads approx 130lbs, Boysen dual stage reeds, big bore carbs, cut inner exhaust liner, installing the ficht fuel-air seperater that also cools the fuel and is a fuel pump all in one,:D and Bobs machine lo water pick up. I will also be installing solid mounts and velocity stacks from Jenksam.
Anyone else got any bolt on mod ideas? All ideas welcome.
Thanks.

[Jon.Bucy]

http://forums.screamandfly.com/forums/showthread.php?t=154869
Thanks again Joe, when I get enough funds together I'll P.M. you.
Hopefully you'll still have what I need.

["HITMAN"]

you can get a stator from rapair to work with your 35 amp charging system that works with the gold flywheel you just need to go with the v4 top bearing cap like jphil said and you will be fine unless your using alot of electronic equipment.

[racer]

The repair stator for the gold flywheel is still not the output of the 35 amp standard circuit.

[Sam Baker]

If you're not turning over 8000, I can't think of a great reason to switch out the flywheel, etc. The cranks seem to be relatively indescructable. Having the extra amperage is nice for anything other than a race boat so if you think you'll be running in the 7000-8000 RPM range, I would keep the stock flywheel and put your money into other areas.

[Jon.Bucy]

If you're not turning over 8000, I can't think of a great reason to switch out the flywheel, etc. The cranks seem to be relatively indescructable. Having the extra amperage is nice for anything other than a race boat so if you think you'll be running in the 7000-8000 RPM range, I would keep the stock flywheel and put your money into other areas.
Thanks for your input Sam, your'e right about running stock flywheel in a constant RPM range. My only reason for lightweight use is for offshore exit and re-entry under hi RPM's :eek: :D :cool:. With that heavy stock flywheel
eventually something's gonna give :(.

[Jon.Bucy]

Bump.

[Jon.Bucy]

tttttt