OS 21 MX outboard powerhead

[Steven Bryant]

Hey guys

I'm after a new Piston/Liner rod and head button for my OS 21XM powerhead, and i was wondering if the version II piston/liner/rod and head button will fit. If they do could someone point me in the direction of someone or company selling them..

Thanks guys

 

[vision craft boats]

Contact Kris Flynn and see if he has any of the rg sleeves, they last much longer.

 

[Jerry Dunlap]

Hey guys

I'm after a new Piston/Liner rod and head button for my OS 21XM powerhead, and i was wondering if the version II piston/liner/rod and head button will fit. If they do could someone point me in the direction of someone or company selling them..

Thanks guys

The Version II piston/sleeve and head will fit on your engine. Available from Tower.

JD

 

[Steven Bryant]

Thanks guys, so the RG sleeve fits the XM, if so thats good as my local hobby shop has quite a few of these.

cheers

 

[Tunnelbill]

Thanks guys, so the RG sleeve fits the XM, if so thats good as my local hobby shop has quite a few of these.

cheers

The RG Sleeve has to be modified to fit in the OS, it Will Not Fit With Out Being Modified.

TB

 

[Steven Bryant]

Ok TB thanks for the heads up, I might just stick with the XM piston and liner instead.

Cheers

 

[BradSpencer]

Hi Steven,

I have a new V2 Piston, liner and rod set and a new V2 head to sell.

PM me if interested.

 

[Kris Flynn]

The RG sleeves are not made any more. ..if you can get them then buy them...the od needs to be turned down and also material taken off the underside of the head. Easy done.

the stock ones work very well though

 

[Steven Bryant]

Thanks Kris, if it's that easy I might pick up a couple.

Cheers

 

[Steven Bryant]

Brad you've got pm

 

[Kris Flynn]

Well it is easy if you know how to use a lathe

I made a plug for the bottom end with acenter in the back of it.

then I mount a piece of Aluminum bar stock in the lathe...usually I just turn a taper on the and then mount the liner on that and use the bung to center the second end.

if I have a few to do then I machine a spigot about .001" max under the size of the bore.

hope that makes sense

 

[Steven Bryant]

Thanks for the info Kris, I personally don't have a lather but I have machine shop next door who do all the work for me at a small price. Initially I'm going to try the version 2 piston and liner that I'll be getting from Brad. Once that needs replacing I'll give the rg ones ago.

Cheers