Author Topic: Hurricane  (Read 191 times)

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Offline AlanJohn

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Hurricane
« on: January 28, 2019, 02:19:46 PM »
I've got a piston siezed in the right hand cylinder barrel of 175 hurricane.
Any tips on how to free it please?
Thanks.
Alan.

Offline dcr

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Re: Hurricane
« Reply #1 on: January 29, 2019, 08:43:50 AM »
The previous owner of my 175DT tried a hammer. I dont recommend this method. See picture.

Dan
1966 175 DT and 1968 350 GTR

Offline AlanJohn

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Re: Hurricane
« Reply #2 on: January 29, 2019, 08:54:53 AM »
I don't think that's a good idea.

Offline dcr

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Re: Hurricane
« Reply #3 on: January 29, 2019, 12:16:54 PM »
You could try a safe semi ballistic option which includes a mallet or deadblow hammer and a block of wood that fits inside the bore.

Start with moderate blows and try and keep the impact to the outer third of the piston. A piece of large dowel or broom handle would work. Hopefully the soaking you gave it loosened things a bit.

I apologize in advance to those of you that cringe and shake when someone suggests fixing a motorcycle problem with a hammer. I completely understand.

Dan
1966 175 DT and 1968 350 GTR

Offline srpackrat49

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Re: Hurricane
« Reply #4 on: January 29, 2019, 01:48:12 PM »
i have small hd jack....  big ass socket under it.... top goes to the frame... start jacking slowley... got mine out that way.....

Offline AlanJohn

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Re: Hurricane
« Reply #5 on: February 13, 2019, 03:40:50 AM »
Just so there's a end to this subject l'm a very determined person and hate giving up but ld never buy another siezed 175 again l tried every way you can think of to remove that piston with the resulting conclusion that l have better things to do with my time and money.
Yes its out but the barrel is nothing more than a useless battered piece of destroyed unrepairable scrap how can it stick like that realisation got out a drill a hacksaw and a really fed up angry 14 stone bloke beat it out .
l actually suspended the engine from scaffolding in case the crankshaft was stuck and beat that piston HARD but it wouldn't move l'm now waiting for new parts to rebuild it safe knowing that l'll NEVER do it again.

Offline BRT-GTR

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Re: Hurricane
« Reply #6 on: February 14, 2019, 09:01:31 AM »
          Alan,
                  Unlucky,  I'm sure we've all been there at one time or another. Frustration can lead to the 'bigamma' approach, sometimes known as  'Fix it or fx*k it' syndrome  ;D :D ;D :o.
       Our pistons are notorious for siezing solid in the chrome barrels, I now steer clear of engines that will not turn over.  Hows the crankshaft ?                                                                              Brian.
« Last Edit: February 15, 2019, 03:32:24 PM by BRT-GTR »
Unspoiled by progress.
I'm so glad I grew up in the 60s & 70s. I did so much stupid stuff and there's no record of it.............Anywhere !!

Offline AlanJohn

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Re: Hurricane
« Reply #7 on: February 14, 2019, 11:43:31 AM »
New crankshaft on its way to me now apparently just landed in this country Pistons gaskets and new barrels arrived today.
It's shortly going to Scarborough for its rebuild.
l had so many spare parts it seemed that it would be an easy job l've unsiezed a couple of 350s but that little devil was impossible if l didn't have tank seat carbs cables etc it would have been wall art.
Actually Brian the crankshafts not seized it does move but has corrosion on it when it's out l'm sure it can be sorted l certainly won't scrap it.
It won't rotate completely maybe if l forced it it would but l've not doing anymore of that.
« Last Edit: February 14, 2019, 02:21:24 PM by AlanJohn »

Offline jjwithers

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Re: Hurricane
« Reply #8 on: February 21, 2019, 03:02:37 AM »
There is an amazing trick with automatic transmission fluid, and acetone.
50/50 mix of the two, pour it into the frozen cylinder and let it sit for a day or so.
put it somewhere that you can make a mess.
eventually, the parts will free up again.
Worked for me on a BMW motorcycle.
1967 175 HS
and some BMW's from the 60's and 70's

Offline AlanJohn

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Re: Hurricane
« Reply #9 on: February 21, 2019, 01:58:18 PM »
Thanks l'll remember that.
But l'm never doing it again.      ( Well .)

 


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