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#34449 - 07/11/13 07:41 AM Re: Grizzly smoking badly... [Re: dirtfan07]
dirtfan07 Offline
enthusiast

Registered: 10/19/12
Posts: 297
Loc: NE Pennsylvania
The shop says it has a noise in the bottom end so they are assuming since the rod and cylinder are scored so badly, the crank is too. It ran low on oil due to it burning so much before anyone noticed. Shop says the head looks good but if that much dirt was in side the engine and it was low on oil, think I'm gonna just do the re-man'ed motor and start over.

Correct on the plating of the cylinder. Sometimes it can be bored and re-plated but no one (even Yamaha) makes oversized pistons. From what I've found, you can replace the sleeve in the cylinder but it is very difficult and the expense would be close to just buying a new cylinder.
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Proud 4th generation military. Thank you to all who have served

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#34451 - 07/11/13 09:41 AM Re: Grizzly smoking badly... [Re: dirtfan07]
DirtyDeed Offline
addict

Registered: 10/16/12
Posts: 522
Loc: Wind Gap, PA
have you considered swapping it with a 700 motor/700 top end? I think they are plentiful.
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2012 Brute Force 750 EPS (stock)
2012 Grizzly 550 EPS Camo and gun racks (wife's ride)

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#34454 - 07/11/13 10:17 AM Re: Grizzly smoking badly... [Re: dirtfan07]
dirtfan07 Offline
enthusiast

Registered: 10/19/12
Posts: 297
Loc: NE Pennsylvania
I did think of that but couldn't find a lot of info on it being possible. The one thing I did find was that their is something different with the throttle body so I kinda was ruling it out
_________________________
Proud 4th generation military. Thank you to all who have served

I've earned the names "Treefan" and "Deerfan"...

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#34457 - 07/11/13 01:48 PM Re: Grizzly smoking badly... [Re: Yamsaab]
Wildhorse800 Offline


Registered: 11/04/10
Posts: 1344
Loc: Between Bedford and Canada
Originally Posted By: Yamsaab
Keep in mind that the cylinder will need replated. Most bikes produced in the last 20 years have a nikasil plating. I would assume modern quads also use this technology.

The plating process can't be done by a general machine shop.


Can't say I know about this plating, but it should be able to be just bored and run without the plating. I thought it was just a silicone type coating inside...

If it ran low but the light never came on, then it never lost oil pressure and the bottom end should be fine.

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#34458 - 07/11/13 02:25 PM Re: Grizzly smoking badly... [Re: dirtfan07]
DirtyDeed Offline
addict

Registered: 10/16/12
Posts: 522
Loc: Wind Gap, PA
yes, the only difference that I am aware of is the upper and throttle body is smaller on the 550. bottom end and driveline is all the same.
put a post up on GC and see what kind of responses you get. there are some real knowledgeable folks there.
_________________________
2012 Brute Force 750 EPS (stock)
2012 Grizzly 550 EPS Camo and gun racks (wife's ride)

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#34459 - 07/11/13 02:26 PM Re: Grizzly smoking badly... [Re: Wildhorse800]
DirtyDeed Offline
addict

Registered: 10/16/12
Posts: 522
Loc: Wind Gap, PA
Originally Posted By: Wildhorse800
Originally Posted By: Yamsaab
Keep in mind that the cylinder will need replated. Most bikes produced in the last 20 years have a nikasil plating. I would assume modern quads also use this technology.

The plating process can't be done by a general machine shop.


Can't say I know about this plating, but it should be able to be just bored and run without the plating. I thought it was just a silicone type coating inside...

If it ran low but the light never came on, then it never lost oil pressure and the bottom end should be fine.


I think that they went to a ceramic liner, not sure what year.
_________________________
2012 Brute Force 750 EPS (stock)
2012 Grizzly 550 EPS Camo and gun racks (wife's ride)

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#34482 - 07/12/13 06:19 PM Re: Grizzly smoking badly... [Re: DirtyDeed]
Wildhorse800 Offline


Registered: 11/04/10
Posts: 1344
Loc: Between Bedford and Canada
I see. Yeah, I don't think you can cut that....

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