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Old 30 November 2009, 12:30   #1
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Country: UK - England
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Boat name: vyper 2
Make: humber
Length: 5m +
Engine: petrol 115 optimax
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Tohatsu thought's

hi guy's girls
thinking of buying a tohatsu 90 2004 era engine which is currently fitted to a 5.8 metre rib
engine has about 40 hrs on it & has given the current owner zero problems

is the tohatsu a rebadged mariner?

does anybody have a 1st hand experience with this or other engines?

one option is to remove & sell it & replace with a 4 stroke or a optimax which i have had no problems with at all in the past.

it seems from previos posts that you searider guy's look for this engine as it is a light weight & high powered.

so will anybody here be able to value (comit to a resale value) just in case we find it a little under powered
our use is going to be with cox & 6 fully kitted up divers 6m dive rib

any thoughts would be gratefully received

thanks John
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Old 30 November 2009, 13:48   #2
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Tohatsu sell as Nissan outboards in the States.

I've never owned one but everyone I've ever spoken to about these engines hold Tohatsu's in very high regard, fuel consumption is supposed to be amongst to best too.

So is this a low tech 90 or a TDLI one?

The TDLI one will be more economical!

As for the size of engine for a 5.8m RIB. Why not buy it and try it before deciding. If you do resell it, you could wait till the warmer months and get a bit more for it than you paid for it.
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Old 30 November 2009, 14:39   #3
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Quote:
Originally Posted by vyper 2 View Post
is the tohatsu a rebadged mariner?
No, but some Mercs & Mariners (small ones) are actually Tohatsu
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Old 30 November 2009, 15:45   #4
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Country: UK - England
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Boat name: Lundy Osprey
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John, doing a search on Google will tell you more about Tohatsu's than i can, but they are made by Nissan and have been making them for a very very long time and appear to get a good press.
I have a TDLi 90 on the back of a 6.2m. Six divers and myself from Appledore to Lundy and back on 45ltrs demonstrates it's good fuel economy.
Did that at about 4000 rpm at 22knts, so not flat out but obviously having to work with all the weight.
Went for economy rather than speed and am very happy with the result and performance.
A 90 on a 6m with divers will be ok but if you want some speed then a 115 may be a better result.
If I were buying again I would not hesitate to go for a Tohatsu, also got a Tohatsu 6hp auxillary and although have not used it much I am happy with that as well, pushes the boat along at 6.5knts at WOT.
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Old 30 November 2009, 16:54   #5
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thanks guy's
can anybody make an educated guess about resale values, not sure if its the 90 tdli
question is the tdli direct injection loke the optimax?
i will have a look on google for some spec
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Old 30 November 2009, 18:50   #6
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Quote:
Originally Posted by vyper 2 View Post
thanks guy's
can anybody make an educated guess about resale values, not sure if its the 90 tdli
This low hours, 2006 Twatsoo 90 TLDi made 3350 on ebay last week, from a dealer:
http://cgi.ebay.co.uk/ws/eBayISAPI.d...=STRK:MEWAX:IT
As the motor in question is a couple of years older (it will be wearing the old uniform) then, assuming it's a TLDi, probably around 2300 on private terms. If it's running on carbs, then probably 2k-ish.
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Old 01 December 2009, 03:30   #7
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Yes, the TLDI is oil injection.
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Old 01 December 2009, 04:47   #8
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fanks guy's
i think i'm going to go -ahead & as discussed if it does not cut the mustard i'll take it off & put a 4 stroke on something like a 115hp or 130 honda
thanks for all of your help
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Old 01 December 2009, 05:50   #9
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This is what Rib Magazine had to say about the Tohatsu 90 carb version probably 10 years ago now, fitted to a similar sized boat.

http://www.ribmagazine.com/site/inde...=104&Itemid=84

Pete
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Old 01 December 2009, 11:35   #10
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Quote:
Originally Posted by Downhilldai View Post
No, but some Mercs & Mariners (small ones) are actually Tohatsu
Really? I knew a lot of small Merc's were rebadged Yamaha's; never heard of them being Tohatsu's.

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