Monoblock blues [emoji24]

[SLEDBUNNYRACING]

Don't rule out a Mad Motorsports 875 Etec... dont have to worry about exchange either.

Good to deal with.

 

[summitzx]

the 875 and the 950 big bores work extremely good from mad motorsports. I think it's worth a phone call and check it out.

 

[bayman]

Call someone . Linderman can cut it for you, I am sure powder freaks could. They are merely just opening it up the .060 thou for the larger piston.

or just run it.

the two 872s that are in the garage have their heads shaved? didnt think they did. the 860 i have in the old XP runs cat pistons.

 

[Bnorth]

What about head cut ect to match???

800 etch



Been thinking of pulling the pin on a trystad 872

Powderfreaks does a BB too. Nice and local and he rides up our way a lot if you need troubleshooting.

 

[tex78]

Powderfreaks does a BB too. Nice and local and he rides up our way a lot if you need troubleshooting.

Ya, but I know the trystad is bullet proof

I want stock like gas and oil and ride

 

[maxwell]

the guy needs a piston and now youve got him looking at 9000$ 950 big bores LOLOL

 

[AaronQ]

Call someone . Linderman can cut it for you, I am sure powder freaks could. They are merely just opening it up the .060 thou for the larger piston.

or just run it.

That's way to complicated of numbers for an internet forum dude come on....

 

[Stevemtb]

Alrighty getting back into this thing again. Engine is apart now and the exhaust side of the right piston is nuked. Lucky I didn’t lose the skirt! Thinking it must have got hot? Maybe went lean? Wondering if I should be looking into my right injector and if so what would I be looking for. Not sure if it means anything or not but the right injector seems loose in the housing and falls out as soon as you tilt it (left one is hard to get out of housing). Both orings are still ok visually

 

[oler1234]

Nothing wrong with that monoblock, it can be repaired. Motts has a exchange program, they get there stuff from CVTech. Or just deal with CVTech yourself and have it repaired.

 

[Stevemtb]

Good to know it’s not that bad (even with the crack). Thanks. Although looks like costs for exchange vs repair aren’t much different.
Couple more questions... I’m really hoping someone can offer some insight into what could have caused this by the pics. Lean and hot? Is there anything I should be doing with the injector?
Also, if I replace the block how do I know what thickness of base gasket to use? Guessing I shouldn’t just use same size as original. Would I measure the ‘piston projection’ spec from the manual and set it that way? I’ve measured the x dimension to determine this on my 2 stroke dirt bikes and assume it’s the same process...

Thanks for any help!