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Classic Bike Trackdays

MVX250 pistons and rings

 
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Mr FFF



Joined: 04 Sep 2010
Posts: 88
Location: West Malling, Kent (Nr Brands)

PostPosted: Wed Nov 17, 2010 8:22 pm    Post subject: MVX250 pistons and rings Reply with quote

Hi All

recieved another batch of MVX250 pistons and rings today, but I'm no closer to being able to put either a std, 0.25 or 0.5 complete set together.

So i'm looking to do swaps with anyone. I have loads of 0.5 rings and 0.25 pistons and a few 0.5 pistons. I need a front 0.5

Swaps have to be NOS (new) and in good condition or I will purchase anything you have surplus.

I can obtain small end bearings and circlips and I can have base gaskets made too.

Clutch plates are no problem and I have located supplies of most other gaskets, but no head gaskets

Come on guys we have to share and swap to keep these bikes mobile on the road.

I still have plenty of NOS Honda MVX250 genuine throttle cables and perfect in the box NOS genuine Honda crankshafts available.

Petrol tank anyone? Agin looking for a swap for my NOS two tone blue tank before I have it blasted and painted.

Stay in touch

ianlread@yahoo.co.uk
PM
07841-577675

PS I have a large collection of NOS GT380J (1972) parts and I'm always looking to purchase any surplus stock for my loft Smile

Regards

Ian
_________________
MVX250 1983 MVX250 1984 GT380J 1972

Valves are for toilets unless they are power valves.
Claim to fame. Have beeten Casey Stoner over a championship season.
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Alastair



Joined: 13 Jan 2007
Posts: 62

PostPosted: Sat Nov 20, 2010 8:34 am    Post subject: Reply with quote

No idea whether it helps or not, but CMSNL are listing

13011-KG4 std rings
13014-KG4 0.75 o/size rings
13091-KG4 0.25 piston C
13104-KG4 piston

Whilst Prestige Honda are listing

13103KG4 which I also take to be a piston.

Woodys Honda list

13098-KG4 - piston 0.75

Brisbane Honda
13097-KG4 - piston 0.5
13013-KG4 - rings 0.5

Honda Mega Store

13011-KG4 - rings std

If you are specific about exactly which part numebr you want, we might be able to search further. The MVX seems to have a myriad of pistons. I only thought they did one, the hand grenade piston Laughing
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Alastair

CBR1000RR6 (0 - Court in 2.5 seconds)
NS400RF
MTX80RFD
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Mr FFF



Joined: 04 Sep 2010
Posts: 88
Location: West Malling, Kent (Nr Brands)

PostPosted: Sat Nov 20, 2010 10:50 am    Post subject: Reply with quote

Hi Alister

Thanks for the reply. Its appreciated. Where did you find the listing for the parts on prestige honda and brisbane etc. I have looked at their web sites and can only find a generic e-mail to write to, no parts lists

I know about CMSNL and have bought quite a lot from them already

thee were loads of pistons made for the MVX. The fiche only lists three grades of STD, but they did make >025, 0.5 & 0.75 oversize. The rears came in two pin sizes 14mm & 18mm and the last revisions 506 are teflon coated

Any help would be welcomed in my quest to complete a set in any size Sad

Regards

ian
_________________
MVX250 1983 MVX250 1984 GT380J 1972

Valves are for toilets unless they are power valves.
Claim to fame. Have beeten Casey Stoner over a championship season.
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Alastair



Joined: 13 Jan 2007
Posts: 62

PostPosted: Sat Nov 20, 2010 8:56 pm    Post subject: Reply with quote

Mr FFF wrote:
Where did you find the listing for the parts on prestige honda and brisbane etc. I have looked at their web sites and can only find a generic e-mail to write to, no parts lists



Now that would be telling Very Happy I tend to be a little circumspect 'cause I'm a selfish sod when it come to NS400 parts and I put a hell of a lot of effort into finding bits for the NS/MTX. I'll PM you with the link. KG4/MVX parts interest me for the gearbox output seal is common to both bikes.
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Alastair

CBR1000RR6 (0 - Court in 2.5 seconds)
NS400RF
MTX80RFD
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Mr FFF



Joined: 04 Sep 2010
Posts: 88
Location: West Malling, Kent (Nr Brands)

PostPosted: Wed Nov 24, 2010 8:34 pm    Post subject: Reply with quote

Hi Alister

Thanks for the PM

The gearbox output seal is a common size available from many bearing stockists by size for a couple of pounds. Unless of course you have an anorak zipped right up and just have to have a genuine part LOL Smile

Best regards

Ian
_________________
MVX250 1983 MVX250 1984 GT380J 1972

Valves are for toilets unless they are power valves.
Claim to fame. Have beeten Casey Stoner over a championship season.
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Alastair



Joined: 13 Jan 2007
Posts: 62

PostPosted: Sat Nov 27, 2010 9:33 am    Post subject: Reply with quote

Mr FFF wrote:
. Unless of course you have an anorak zipped right up


You've seen me then Shocked

From memory the genuine seal has an external lip which locates nicely in the cases. The aftermarket ones are plain.
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Alastair

CBR1000RR6 (0 - Court in 2.5 seconds)
NS400RF
MTX80RFD
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Mr FFF



Joined: 04 Sep 2010
Posts: 88
Location: West Malling, Kent (Nr Brands)

PostPosted: Sat Nov 27, 2010 9:39 am    Post subject: Reply with quote

One of the crank seals is like that, but looking at my manual the gearbox looks to ba plain seal. I will let you lnow later as I am stripping my rusty MVX250 motor today if I can chip the ice off the workshop paddlock. Photo's to follow.

My GP engine builder thinks he knows a supplier in Germany that can supply the seals with a lip as you describe. I will let you know
_________________
MVX250 1983 MVX250 1984 GT380J 1972

Valves are for toilets unless they are power valves.
Claim to fame. Have beeten Casey Stoner over a championship season.
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Alastair



Joined: 13 Jan 2007
Posts: 62

PostPosted: Sat Nov 27, 2010 8:32 pm    Post subject: Reply with quote

Mr FFF wrote:
My GP engine builder thinks he knows a supplier in Germany that can supply the seals with a lip as you describe. I will let you know


I'm all ears. Maybe he can source the nS400 right hand seal too.
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Alastair

CBR1000RR6 (0 - Court in 2.5 seconds)
NS400RF
MTX80RFD
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