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Sized engine BrianE 06-10-2008
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Posted by Simon Wilson on June 11, 2008, 6:35 am
BrianE wrote:
> on 11/06/2008, Champ supposed :
>
>> This is *really* not a good sign...
>
> OK, spoke to a Yamaha dealer re possible repair this morning and I
> quote; "the only reason a two stroke will seze, is due to lack of oil"

Whether or not that's a true statement (which I doubt), the bike in
question deffo ain't a 2-stroke.

>
>> So, what leads you to believe that it's seized?
>
> The opinion of an RAC man (OK I know he's 'cars') plus the assured
> opinion of mechanics close to where my son lives.

Out of interest, how much dismangling did they do? I think I'd at least
want to take the clutch cover off and have a look.
>
> BTW, I do appreciate you taking an interest in this.
>
> Cheeers
>
> B. :-)
>
>

--
/Simon

Posted by platypus on June 11, 2008, 6:37 am
BrianE wrote:
> on 11/06/2008, Champ supposed :
>
>> This is *really* not a good sign...
>
> OK, spoke to a Yamaha dealer re possible repair this morning and I
> quote; "the only reason a two stroke will seze, is due to lack of oil"

The 650 Dragstar is a 4-stroke.


Posted by Champ on June 11, 2008, 6:59 am
wrote:

>on 11/06/2008, Champ supposed :
>
>> This is *really* not a good sign...
>
>OK, spoke to a Yamaha dealer re possible repair this morning and I
>quote; "the only reason a two stroke will seze, is due to lack of oil"

This is a) incorrect and b) irrelevant for a four stroke. Which the
650 is. You're sure it's a 650, yes?

>> So, what leads you to believe that it's seized?
>
>The opinion of an RAC man (OK I know he's 'cars') plus the assured
>opinion of mechanics close to where my son lives.

Ok, but I want to know why they think it's seized - it's really pretty
rare for four strokes to seize. Do you have access to the bike? If
so, put it in gear (2nd rather than 1st, for pref) and try and push it
- this should turn the engine over. If it's seized the rear wheel
will be locked. However, engine compression can sometimes give the
same result, so you need a bit of a 'feel' for this.
--
Champ
What doesn't kill you only makes you stronger
ZX10R | GPz750turbo | GSX-R600 racer (for sale) | ZX10R racer (broken)
neal at champ dot org dot uk

Posted by BrianE on June 11, 2008, 7:11 am
Champ pretended :
> wrote:
>
>> on 11/06/2008, Champ supposed :
>>
>>> This is *really* not a good sign...
>>
>> OK, spoke to a Yamaha dealer re possible repair this morning and I
>> quote; "the only reason a two stroke will seze, is due to lack of oil"
>
> This is a) incorrect and b) irrelevant for a four stroke. Which the
> 650 is. You're sure it's a 650, yes?

100% ;o)


> Ok, but I want to know why they think it's seized - it's really pretty
> rare for four strokes to seize. Do you have access to the bike?

Not yet I'm afraid..

If
> so, put it in gear (2nd rather than 1st, for pref) and try and push it
> - this should turn the engine over. If it's seized the rear wheel
> will be locked. However, engine compression can sometimes give the
> same result, so you need a bit of a 'feel' for this.

I know what you mean, but surely a half decent mechanic would do this?
I'll keep you posted.

B.



Posted by Nige on June 11, 2008, 7:30 am

> wrote:
>
>>on 11/06/2008, Champ supposed :
>>
>>> This is *really* not a good sign...
>>
>>OK, spoke to a Yamaha dealer re possible repair this morning and I
>>quote; "the only reason a two stroke will seze, is due to lack of oil"
>
> This is a) incorrect and b) irrelevant for a four stroke. Which the
> 650 is. You're sure it's a 650, yes?
>
>>> So, what leads you to believe that it's seized?
>>
>>The opinion of an RAC man (OK I know he's 'cars') plus the assured
>>opinion of mechanics close to where my son lives.
>
> Ok, but I want to know why they think it's seized - it's really pretty
> rare for four strokes to seize. Do you have access to the bike? If
> so, put it in gear (2nd rather than 1st, for pref) and try and push it
> - this should turn the engine over. If it's seized the rear wheel
> will be locked. However, engine compression can sometimes give the
> same result, so you need a bit of a 'feel' for this.

Take out the spark plugs.



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