watershed Posted July 23, 2015 Share Posted July 23, 2015 Hi all. The new project boat has a Perkins 108 diesel coupled to a triumph dolomite marinised gearbox. As a newbie to inboard engines, does anyone have any knowledge of these gearboxes? Is it a common installation,are they reliable and what is actually done to Marinise them? 1 Quote Link to comment Share on other sites More sharing options...
ChrisB Posted July 23, 2015 Share Posted July 23, 2015 The name sent me into a colds sweat. I had a new Dolomite Sprint in the 70s. It was one of the fastest thing about at the time. Unfortunately it worked about 2 days in 365 2 Quote Link to comment Share on other sites More sharing options...
watershed Posted July 23, 2015 Author Share Posted July 23, 2015 Could have been a good car if it had been built properly! The bad old days of British leyland 2 Quote Link to comment Share on other sites More sharing options...
watershed Posted July 23, 2015 Author Share Posted July 23, 2015 Be grateful it wasn't a marina,allegro or princess! 2 Quote Link to comment Share on other sites More sharing options...
watershed Posted July 23, 2015 Author Share Posted July 23, 2015 The dolly sprint at least looked even if it didn't work very often. Well,at least until the rust took hold! 1 Quote Link to comment Share on other sites More sharing options...
Viking23 Posted July 23, 2015 Share Posted July 23, 2015 The car gear box would have four forward gears and one reverse, the reverse, first and second gears would be too highly geared for a boat I would have thought, so maybe marinising one might be limiting the gears to one forward and one reverse with a decent ratio. Also you wouldn't need a clutch. I remember the Triumph dolomite sprint, the problem was in order to get everything to fit, the engine and gearbox was fitted on a slope, however, due to the angle, the engine sufferered oil starvation, and this was it's downfall if I recall. Quote Link to comment Share on other sites More sharing options...
Maxwellian Posted July 23, 2015 Share Posted July 23, 2015 The name sent me into a colds sweat. I had a new Dolomite Sprint in the 70s. It was one of the fastest thing about at the time. Unfortunately it worked about 2 days in 365 And it rusted all year round. 2 Quote Link to comment Share on other sites More sharing options...
Wildfuzz Posted July 23, 2015 Share Posted July 23, 2015 In my youth I used these for banger racing at Ipswich stadium............. Never finished a race. Seem to remember some had an overdrive button on top of the gear shifter. Ideal for Breydon water. 2 Quote Link to comment Share on other sites More sharing options...
BroadScot Posted July 23, 2015 Share Posted July 23, 2015 And it rusted all year round. It rusted before it left the factory! Iain 2 Quote Link to comment Share on other sites More sharing options...
alexandlorna Posted July 23, 2015 Share Posted July 23, 2015 The car gear box would have four forward gears and one reverse, the reverse, first and second gears would be too highly geared for a boat I would have thought, so maybe marinising one might be limiting the gears to one forward and one reverse with a decent ratio.Also you wouldn't need a clutch.I remember the Triumph dolomite sprint, the problem was in order to get everything to fit, the engine and gearbox was fitted on a slope, however, due to the angle, the engine sufferered oil starvation, and this was it's downfall if I recall.I was actually wondering about this myselfSo actually it's a bit of a joke in engineering terms, and should be deposited in the nearest skip and a proper marine box fitted 2 Quote Link to comment Share on other sites More sharing options...
ranworthbreeze Posted July 23, 2015 Share Posted July 23, 2015 It rusted before it left the factory! Iain Hi Iain, Sound a bit like 1980's Vauxhall Astra's there was a problem in the prduction line on the acid dip it broke down with shells being dragged out of the acid. I had a Astra estate, vertually every panel rotted even in the middle of the panels within a year. Off course Vauxhall had rot issues on there 60's and 70's cars the Crestwood and Victor was especially bad. Mind you so where many of the other makes at the time. Regards Alan Quote Link to comment Share on other sites More sharing options...
BroadScot Posted July 23, 2015 Share Posted July 23, 2015 One model that was biscuit tin then was the Fiat 127, even the Japanese cars then were potential rust buckets from day one, but were mechanically very reliable. Now cars are lighter and prone to less rust. A mate of mine worked in a car accessory shop, in those days his biggest seller was Ku-rust Iain p.s. For my sins I owned a FB Vauxhall Victor rust bucket but the cow hide leather seating was awfy cumfy lol 1 Quote Link to comment Share on other sites More sharing options...
Wehlau Posted July 23, 2015 Share Posted July 23, 2015 Sounds a bit home made to me,the only way you can use a car gear box in a boat is to change the gears about in the box as reverse is the lowest ratio in the box your prop will turn so slow it will have no effect.we have tried this in the past on a 4108 with a commercial van box,it was great in third for drive and used fourth gear in place of reverse,but be aware this is not a DIY job.you can buy a second hand velvet drive for a hundred pounds now so it's not worth all the effort 2 Quote Link to comment Share on other sites More sharing options...
LondonRascal Posted July 23, 2015 Share Posted July 23, 2015 https://www.youtube.com/watch?v=iyVAVdqyt-A 3 Quote Link to comment Share on other sites More sharing options...
Maxwellian Posted July 24, 2015 Share Posted July 24, 2015 Wasn't expecting that. Very funny Quote Link to comment Share on other sites More sharing options...
Oddfellow Posted July 25, 2015 Share Posted July 25, 2015 I'd like to have a Velvet Drive for £100. Got one with a 2:1 reduction unit? Quote Link to comment Share on other sites More sharing options...
BroadAmbition Posted July 26, 2015 Share Posted July 26, 2015 Griff Quote Link to comment Share on other sites More sharing options...
Maxwellian Posted July 26, 2015 Share Posted July 26, 2015 Classic, enjoyed those so much. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.