if u r a boat mechanic please explain

[aussie]

well thamnls spares just dont want to go the wrong way about it

i have to options buy that 302 windsor of ebay and hope it fits without too much trouble and rebuild it first

the next one is buy a edelbrock preformer head with the larger chambers fit the rollers and head comes complete with studs and rollers i was going to go for a 1.8 rocker arm and mod the manifold for a 600 cfm vac look may even pull the engine down and rering ti and get the cam ground to a mild solid but will it all be worth it in the end

i dont mind if i have to spend money in the end it will be a better boat it working out which way to go

[step up here]

larger head chamber makes for lower compression ratio without the proper pistons. look just get a nos kit. you want power . power you will have doubled. but if abused you wont have any motor left.

[aussie]

Originally Posted by step up here

larger head chamber makes for lower compression ratio without the proper pistons. look just get a nos kit. you want power . power you will have doubled. but if abused you wont have any motor left.

thats not the advice im looking for what r all u guys going to start being dicks now

[aussie]

http://www.youtube.com/watch?v=ldeUvKat94Y

[spareparts]

good info on here
http://www.jalopyjournal.com/forum/s...ght=mercruiser

and here
http://bpi.ebasicpower.com/c/MER6A/3...for+Mercruiser

[aussie]

well i decided to do the 3.7 up watching some heads on ebay us the guy said he can post them for $175 so i will go the full hog do what ever it needs rebore . balance... rollers . mild solid regrind .timing chain. speedy sleve on camshaft . head stud kit..cut intake and fit 4 barrell plate..get dizzy recurved...fit a air fuel ratio gauge to get the mixtures right...electronic kit..solid lifter..3/8 pushrods...the heads need no work new well i have to buy 2 just thinking if i can enlarge the exhaust outlet on the transome....and too i may run it on a engine dyno to get a horse power and tork reading my mate said he will do it so when i have it done ill post some stuff well i better get of of here and start making some cash and i mite see if i can get rid of that harmonic balancer and find something better well cheers for now

ill post some pics of the engine when its appart if u like

[Road King Cole]

Hi Aussie.

Sure, pictures would be great. 'love to follow projects such as yours.

Are you planning on using your V20 on a lake or the ocean? I use mine on the ocean and find my 470 just fine as is. Get's up and planes easily. I will need a very calm sea to run WOT for any length of time. Not once did my wife ever wish it had more power...

I am not a mechanic, and interested in your comment about removing the harmonic balancer. Is that risky? how much more power would one get?

thanks,

rkc