Pin hole in bore

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seagull101
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Location: Scottish islands

Pin hole in bore

Postby seagull101 » Fri Jul 14, 2017 5:52 pm

Hi everyone,

Am starting to slowly reassemble my modified model 75 but noticed this today!
Is it a crack waiting to happen?
The block is the one that takes the amal carbs.

Jacob
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headdownarseup
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Location: bristol

Re: Pin hole in bore

Postby headdownarseup » Fri Jul 14, 2017 6:20 pm

That should be fine Jacob.
It's far enough at the bottom end of the cylinder that it shouldn't do anything to the performance. There shouldn't be anything of the waterjacket underneath this either. Try it and see how it goes.
Nice cross hatching by the way :P

All good

Jon

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seagull101
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Location: Scottish islands

Re: Pin hole in bore

Postby seagull101 » Fri Jul 14, 2017 7:37 pm

Thanks for the reassurance Jon!

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Nudge
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Re: Pin hole in bore

Postby Nudge » Fri Jul 14, 2017 10:54 pm

Looks like some sand drop from when the casting was cast. As said it is in a place that would not matter. Even if it was up further I dont think it would create any problems.

That bore has not seen a lot of use...... Like a lot of them!
Have you ever seen a seagull that has worn out? And Im not meaning from abuse or misuse!

That is good to go!
"THE KING OF BLING"!
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timberman2004
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Re: Pin hole in bore

Postby timberman2004 » Tue Jul 18, 2017 11:16 am

Now this got me to wondering ...
I guess that the VAST VAST majority of 'Gulls never got/get very much 'water time' use at all

hardly ever in winter...never at night...and just short sharp little runs, mostly weekends, tendering to & fro for a few minutes, then chuck them back into the dark dingy recesses of the garage or similar
probably never flushed out or gearbox oil changed...

I know its no record, but 4 lads in the boat, trip down the thames, Pink Hill to Cookham, 70+ miles over 3 days, so some 25 hrs (incl 'poodling' about)
Gull' on full ...never missed a beat except the timing screw had a habit of coming loose once a day or so..easy fix

I think all the mending and repair works we all do is as a result previous owners abuse and lack of even any rudimentary maintenance,.. not that the Gull has worn out

Charles would probably know if an engine has ever been run to destruction
Neal...errrr... an ON, OP, 2xSD, F, 3xSJP, LLS, 2xFV, FVP, FPC, CPC WPCL, WSC, and a few eggs hatching, hopefully

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Charles uk
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Re: Pin hole in bore

Postby Charles uk » Tue Jul 18, 2017 11:48 am

It only seems to be the racers that hurt them badly, I've broken 3 crankshafts, prop shafts a couple of con rods, their ailments are generally caused by a severe lack of TLC & by owners never checking the bearings & rubbing parts for the correct tolerances.

Jan the Dutchman on one of his visits here brought a Seagull with a very very tired lower unit, you could hear it whine from 50 yards, he wanted to see how long it would last, I think you were on that Essex trip Neal.

I did the same Thames trip Neal from as high up as we could go, with my son in a Canadian canoe & a model 55, camping on the way, on the 3rd day at Reading we got caught in a thunder storm & got soaked to the skin, 11 year old boys seem allergic to water & cold conditions, so had to phone home for rescue from the rowing club at the end of the motorway spur.

You win! you did better than us, I owe you a beer!
Make it idiot proof and someone will make a better idiot.

tambikeboy
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Re: Pin hole in bore

Postby tambikeboy » Tue Jul 18, 2017 7:03 pm

I've broken 3 crankshafts, prop shafts a couple of con rods,

A wee burd tells me that you could break an ANVIL chas :lol: :lol: p :lol:
Roll me up and smoke me when I die
Regret is just a memory written on my brow

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Charles uk
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Re: Pin hole in bore

Postby Charles uk » Tue Jul 18, 2017 7:27 pm

If there was an anvil your side of Hadrian's wall, Tam you lot would be using it to break the chains you claim we're keeping you in!
Make it idiot proof and someone will make a better idiot.

tambikeboy
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Location: Scotland

Re: Pin hole in bore

Postby tambikeboy » Tue Jul 18, 2017 8:00 pm

:lol: love you too china... :lol:
Roll me up and smoke me when I die
Regret is just a memory written on my brow


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