engine upgrade

[matthew daley]

hi guys need to pick youre brains i have a omc cobra 4,3 v6 in a renken sea master and ive had enough of messing with scrap ive fitted 3 engines in 3 years now its the end for this engine as i think there rubbish can i fit a 5.7v8 in it and is there maney differences ile buy engine new no more old truck engines for me i was 3 mile out today when this engine decided to loose oil pressure but it did get me home i guess theese 4.3 engines are quite common to give up the ghost at the upmost wort time to do it iff i never serviced them ide understand anyways rant over need as mutch info on wat engine will go to my drive its a dog drive incase you need to no cheers mat

 

[Augoose]

Re: engine upgrade

Seriously though....huh?

What is the model/serial number of your outdrive?

 

[matthew daley]

Re: engine upgrade

at this time boat still in water dont like messin around in the dark puttin boats on trailers i no its the same as the sx model from previos threads ive done it has water pump on leg iff that helps

 

[bonzoscott]

Re: engine upgrade

Likely have to relocate motor mounts is the first big thing, well next to, will it fit? Floor cut fore enough? Second is, will the replacement bolt to your coupler? Third, would the exhaust match? Lots of shootin' craps with out a good research. If you have been through three motors - It may be more efficient to find a decent boat with a decent motor or find out what's killin' your motors. Just my thought...

 

[Bamaman1]

Re: engine upgrade

3 motors? There's something causing it.

The 4.3 is a great motor. Too bad the OMC Cobra outdrives are still not available.

Sorry for your dilemma. Sometimes it's time to visit the marine scrap yard--where many of the boats were I/O's that met an early grave.

 

[matthew daley]

Re: engine upgrade

spoke to american marine a 5,7 will fit on my leg and my leg will take it got to fit a v8 esa module a mercruiser style belt set up and rev counter again cus its a v6 model ime buying a crate motor ready to go in with risers ?4625.00 1 year garantea a peice of mind i love this boat leg is 2 year old done by previos owner so i should be ok there

original engine was like a steam engine so i bought a second hand 1 of evil bay whitch lasted about a month then i fitted present engine a chevy astro with new risers that lasted 100 miles so no messing now new engine peice of mind boats worth it in my eyes i bought it for 1800 quid nowing original engine was tyred but i work on alot of these in uk for a local boat repair company and the 4.3 seems to be in bits all the time maybe because of the envioment there in been doing reserch my boat came with a v8 as an option

 

[matthew daley]

Re: engine upgrade

help help:blue: