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Old 31 May 2005, 16:20   #11
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 5,041
Nasher, I think so...I'll go and check right now. It's certainly not going to be metric on an 80's OMC.

Edit: Yep 5/16"unf. Now you mention it, I've a vague recollection of having to run a tap down the threads to clean them out. If you don't have a tap, put a couple of hacksaw cuts along the thread of a bolt, lubricate it well and work it down the hole. Remove it often to clear the grooves. If you've got a high tensile bolt, you can harden it by heating to bright cherry red and quenching it in water.
Don't break it off in the hole though or yer fecked!

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Old 31 May 2005, 16:50   #12
Nasher's Avatar
Country: Other
Town: Principalite d'Chaos
Boat name: The Nashers Revenge!
Make: Ocean & Bombard
Length: 6m +
Engine: Suzi DT200EFI, DT9.9
MMSI: "Mmmmm SI" she said!
Join Date: Jan 2004
Posts: 4,162
Thanks JW.

I'll be glad to get back to Metric with the new (to me) Suzuki, my tools and fastener stocks have been built up over the years on Kawasakis, Subarus, Shoguns and smaller Suzuki outboards, so I'm better prepared. Never thought metric fine would be so appealing until I spend the last year with a Johnson. I suppose its only what you are used to.

I have some UNF taps somewhere, a legacy of Hilman Imp ownership, so I'll dig them out and clean up the threads. Can't find a big 'U' bolt or lifting eye anywhere, so I'll have to buy one tomorrow. I took a rubbing of the flywheel top earlier and transfered it onto a sheet of 6mm steel plate ready to make the bracket. Its turning into a lot of work to get the engine off before its new owner picks it up.


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