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What head and fix kit works

Fwiw Mongoose machine in BC has a kit.

Here are three places to try for a "Fix Kit" option in Canada:

1. recreationsupply.co Saskatoon Sask. They carry the MTNTK Kit.
$685.95 cdn

2. mongoosemachine.com Port Coquitlam B.C. Their own kit. $649.99 cdn

3. terraalpsracing.com Kelowna B.C. Their own kit. $684.95 cdn
 
Hey guys, I have said this in outer posts but, If you are doing a piston top end freshen up or putting a Stage upgrade or Fix-Kit, Don't forget to attend to the exhaust guillotines if you are dealing with and engine/monoblock cylinder that has more than 2000 miles on it as the cylinder where the exhaust guillotines slide and seat gets worn or beat out and there is no fix for this but cutting or grinding the piston interface side of the guillotine to allow more clearence between the valve face and the piston. I learned the hard way (at my own expense the cost of a new monoblock-cylinder). Indy Dan can do these on his CNC mill and knows what he is doing and talking about!! I have done my own on the CNC mill that I have access to, not to hard to figure out either and I have photos of tjhe failed pistons on two rebuilds where this failure occured afterwards if anyone is interested and can PM me.

gtwitch in wyoming
 
I have 19 RKT direct replacement piston's and drop in kit sleds in the field. !00% success with these. one 2011 pro rmk stage III with direct replacement pistons. over 6000 trouble free miles. one 2008 dragon rmk just direct replacement pistons 4500 miles on that. two others over 4000 miles.

I haven't looked else where because this has been so great. I don't believe a fix kit or long rod motor is needed either. correct blue printing, and correct tolerance's need to be followed. you see the result of that.
 
Mtntk Performance has also dropped their prices for the Fix Kit. Reliability wise this kit has been awesome. I put mine in at the beginning as a precaution because even the new motors have the same issues.
 
Speed Shop inc (SSI) out of Cannon Falls MN puts a quality product out at a great price with awesome support.
I liked Erich's work. I decide to go the route of his 860 kit.
 
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