Repower/Gas to Diesel Conversion

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moguls2go
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Repower/Gas to Diesel Conversion

Post by moguls2go »

Hi Guys-

What are your general thoughts on purchasing rebuilt gas engines rather than new?

If we were to convert to diesel power, what considerations do I need to make? Do we need new engine beds, transmissions, shafts, struts? Just wondering what I need to be thinking about.
Max
moguls2go
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Re: Repower/Gas to Diesel Conversion

Post by moguls2go »

We have 330hp 454's in the boat now
Max
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John F.
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Re: Repower/Gas to Diesel Conversion

Post by John F. »

All that and gauges, probably exhaust depending on hp, new water intakes, battery cables, fuel filters, etc
1968 B20 Moppie - Hull # 201-937
1969 B31 FBC - Hull # 315-881 (sold)
1977 B31 FBC - Hull # BERG1652M77J
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Bob H.
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Re: Repower/Gas to Diesel Conversion

Post by Bob H. »

all the above plus fuel lines, return lines..BH
1966 31 Bahia Mar #316-512....8 years later..Resolute is now a reality..Builder to Boater..285 hours on the clocks..enjoying every minute..how many days till spring?
moguls2go
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Re: Repower/Gas to Diesel Conversion

Post by moguls2go »

Thanks guys. Any thoughts on rebuilt engines?
Max
Tony Meola
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Re: Repower/Gas to Diesel Conversion

Post by Tony Meola »

If you are purchasing rebuilts, make sue you know what went into them and who did it and was it done right. Some machine shops have better reputations that others.

What issues are you having with your engines? Can they be rebuilt?

Doesn't matter if you go diesels or gas you are going to be fixing a lot of things, so you need to budget more than just the engines. It is going to be, while I am here I might as well fix this because it is going to need to be done in 5 years if I don't.

Unless it has been done, you are going to need to replace the bulkhead aft of the engines. I have not seen an older 31 that has not needed to replace that bulkhead. Then there is the wiring, the deck, you get the picture.

Plus there are a couple of other must do's, beef up the strut pad, that is a weak spot. Also, might as well put in Fiberglass strut tubes and save yourself grief down the road. If you do put in the strut tube, make sure if you do go diesel it will take 11/2 inch shafts.

If you want diesels, budget $60,000 and then beef up the bank account because the number is going up as you get into the job.
1975 FBC BERG1467-315
ed c.
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Re: Repower/Gas to Diesel Conversion

Post by ed c. »

I would not repower. There are a lot of 31 berts with diesels for sale. You can get exactly what you want at a price you can deal with and save a lot of aggravation. What Tony Meola said is true as can be. Good luck
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Bruce
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Re: Repower/Gas to Diesel Conversion

Post by Bruce »

^This
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