Repower-efi's

bushwood

Member
Joined
Dec 2, 2004
RO Number
15839
Messages
130
We're boat shopping and trying to find the perfect 37 Tollycraft is proving difficult. There is no time frame but being boatless for the past 7 months has been tough. I may have found one with old 440s. My question is, if a guy could buy it right would it behoove me to pull the 440s and invest in 6.0 efi's? It seems that a pair of yanmars or similar diesels would cost nearly double that of efi's and get similar burn rate.

Thoughts?
 
Check your data diesel uses much less fuel to produce same hp. Not that the cost of conversion will pay off.

What's unfixable with present engines?
 
Thank you for the replys. I looked at the 34 and wishing it was located in the northwest to avoid transporting. That cost alone makes it more than we're willing to spend putting the cost more than its worth-for us that is. I do like the 34 and will keep it on my radar.

Regarding the present engines, I've been down the road with our previous boat having 440s. Bullet proof and easy to work on, yes. Finding someone more qualified than me to work on them was a task. In our area, I found some mechanics had no experience with a 440 due to their age or the quirks they have the engine may have. I had the heads done on our tired 440s and the blow by increased as well as crankcase pressure. Seems putting new (heads) to old (block) had an adverse effect.

I am keeping an open mind though. When we sold that boat with 440s I was sure I wanted diesel mainly for the safety factor and what I thought was burn rate. Some of the higher hp diesels don't seem to do as well as non-turbo'd engines as far as gph and are you doing a dis-service to a turbo'd engine by running at trawler speeds? The kind of boat we like is going to have the higher hp diesels which factors into the purchase price. So my way of thinkingis; if I can get the boat we want, possibly repower and still be under the cost of a like boat with diesels,are we ahead?
 
How much of your life are you willig to give up waiting for all this stuff happen?
 
How much of your life are you willig to give up waiting for all this stuff happen?
 
How much of your life are you willig to give up waiting for all this stuff happen?
 
There are too many boats everywhere to ship very far unless it can go on its own bottom.

High HP diesels don't necessarily cost more on boats, the used boat market is that soft. Low powered engines don't use less fuel though they may weigh less. Weight may be similar across a wide range of power because makers used the same block for engines in one example ftom 150 to almost 500 HP today in the same displacement.

It is the power used not the power available that determines fuel use. My big diesels ran just fine at slow speeds and gave trawler like economy. I could also speed up when I wanted to.
 
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