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Donzi 18 Classic Questions

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Donzi 18 Classic Questions

Old 12-06-2019, 06:01 PM
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Default Donzi 18 Classic Questions

I have recently purchased a 1974 18 classic and have some questions that I didnít find answers to using the search feature.

where can I get a throttle/shifter for a left hand drive?

it has a mercruiser 350 and Volvo drive, the power trim (lift) doesnít work and the motor appears to be toast, where can I get this part?

would there be any benefit to swapping the Volvo drive for a bravo?

thanks for any answers/help.
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Old 12-07-2019, 04:22 PM
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Search for parts based on the Volvo drive, not donzi. Any marine parts place should be able to sell you a throttle shifter and trim pump.

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Old 12-07-2019, 04:36 PM
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Yeah , shouldn't be too hard to source a replacement for that 'trim' or is it really just the tilt motor ? Is your outdrive a 270 or a 280 OR a 270T or a 280T ?
As for changing over to a Bravo ... it isn't going to be cheap and your transom is going to have to be re-sealed and cut for a B unit , plus the motor will more than likely have to be shifted as well. At this point your transom might be in need of a total re-build anyway on that vintage but the big question is , what condition is the fuel tank in ?
A new Bravo transom and drive is going to be a fair bit heavier than the existing Volvo and you can see that in that most of the C 18s had Alpha units once Donzi began converting over to 'black' , even up to almost present day.
If your steering is on the port side you'll have to counter-rotate the Bravo unit as well. The old 270 and 280 Volvo drives were bullet proof although not quite as hydrodynamic as the Alpha units so there's always a trade off somewhere.
Most Donzis of that vintage were very pretty due to color options . Post a pic or 2 !
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Old 12-07-2019, 06:51 PM
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Originally Posted by madbouyz View Post
Yeah , shouldn't be too hard to source a replacement for that 'trim' or is it really just the tilt motor ? Is your outdrive a 270 or a 280 OR a 270T or a 280T ?
As for changing over to a Bravo ... it isn't going to be cheap and your transom is going to have to be re-sealed and cut for a B unit , plus the motor will more than likely have to be shifted as well. At this point your transom might be in need of a total re-build anyway on that vintage but the big question is , what condition is the fuel tank in ?
A new Bravo transom and drive is going to be a fair bit heavier than the existing Volvo and you can see that in that most of the C 18s had Alpha units once Donzi began converting over to 'black' , even up to almost present day.
If your steering is on the port side you'll have to counter-rotate the Bravo unit as well. The old 270 and 280 Volvo drives were bullet proof although not quite as hydrodynamic as the Alpha units so there's always a trade off somewhere.
Most Donzis of that vintage were very pretty due to color options . Post a pic or 2 !

Only reason I asked about the bravo change is I have a complete xr from gimbal to lower. It is a power tilt drive, no trim. The steering sucks but it eventually goes where I point it. I took it out today and itís a blast, just need to clean her up a bit and enjoy it. The transom and stringers are solid as a rock and obvious that someone replaced both not too terribly long ago.


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Old 12-08-2019, 07:58 AM
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Hey , an X18 . Do you know they're faster than a regular C18 ?
The old cable steering Volvo system can get pretty sloppy over time. Maybe a new cable and tightening up a few things can help .
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Old 12-08-2019, 08:33 AM
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Not to steer you away from this site but you can find pretty much anything you want for these boats at donzi dot org.
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Old 12-08-2019, 11:35 AM
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Originally Posted by thirdchildhood View Post
Not to steer you away from this site but you can find pretty much anything you want for these boats at donzi dot org.
I have tried to register for that site 3 times with 0 success.
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