Sick Nytro!

BBNytro

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Estevan, Sask

• Dec 29, 2015

• #1

So my MCX nytro started consuming oil last season. I rebuilt the turbo and tried a different MCX Scavenge pump. Still consuming oil. Last night I pulled the tank and did a compression test the outside cylinders were 160 psi and the center one was 140 psi. SO I hooked up the cylinder leakage tester to it and the best result I could get is 60% leakage with a pile of air coming out of the breather. Any thoughts? Just going to start looking into pricing parts. It does have JE Pistons and Carrillo rods.

 

RACINSTATION

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• Dec 29, 2015

• #2

If you have 60% coming out the breather, I would guess that you have some nicasil damage to the cylinder wall and you will need new pistons, rings, and a replate on the cylinder assembly.

 

BBNytro

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Estevan, Sask

• Dec 29, 2015

• #3

What does the Replating run?

 

RACINSTATION

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• Dec 29, 2015

• #4

Usually around $650 for a triple. You HAVE to do all three cylinders and then deck the top so it is true and flat.

 

M

M5-

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• Jan 1, 2016

• #5

Do you have a head shim still? I've blown those out before which results in what you are seeing or worse. I'm guessing that with rods and pistons you don't have a shim but just a thought.

M5

 

Last edited: Jan 1, 2016

BBNytro

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Estevan, Sask

• Jan 7, 2016

• #6

Well tore the nytro down today and found that all three pistons are broken in the middle Ring land pretty much in the same place. so I am assuming that I had some detonation not too long ago. Not sure whether to contact JE and see if there was any issues with that batch of pistons. So I am on the hunt for another set while the block goes in for replateing.

 

Givemeaboost

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Great Falls, MT

• Jan 8, 2016

• #7

Why are the oil rings lined up on that piston ?




Ken..............

 

RACINSTATION

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• Jan 8, 2016

• #8

Cracking between the ring lands like that is usually a cylinder pressure (boost) issue. Fuel quality will also lend a hand to this problem.

 

S

Shred4Ever

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• Jan 19, 2016

• #9

Make those JE into ashtrays... Not worth chit! Go with Wiseco SK1367 9:5:1.... Those friggen JE are junk!!! (For Nytro).... Apex ok..

Don't quote me on part #

Good Luck