Am I out of line here

[Motleyone]

I run a Turbo Nytro. I had the motor work done last year including putting in some low comp JE Pistons. I ended losing 2 rod bearings and while the motor was torn down we found that each of the 3 JE pistons had cracks in the skirts. I found out that this was the same case on 3 other Nytros torn down that had JE's in them. Under higher boost (18lbs) and above these pistons are not holding up. JE say's they will not replace them and that anyone with this issue will have to pay for new ones that they are strengthening.

I say JE is out of line here. They build these pistons for Turbo applications then will not warranty them when there is a design flaw.

Do I let this go, am I out of line?

 

[gunnerthesnowman]

I run a Turbo Nytro. I had the motor work done last year including putting in some low comp JE Pistons. I ended losing 2 rod bearings and while the motor was torn down we found that each of the 3 JE pistons had cracks in the skirts. I found out that this was the same case on 3 other Nytros torn down that had JE's in them. Under higher boost (18lbs) and above these pistons are not holding up. JE say's they will not replace them and that anyone with this issue will have to pay for new ones that they are strengthening.

I say JE is out of line here. They build these pistons for Turbo applications then will not warranty them when there is a design flaw.

Do I let this go, am I out of line?

Were your cylinders egged / out of round , what turbo kit , what fuel control and timing control ??

 

[powderlites]

Pistons cracking

We have never seen them crack ??
You must be runing lean or too much boost for your fuel.
Are all sleds have same setup or different turbo/super kits?
Just had a look at a JE Nytro turbo setup and everything look good.
Detonation must be problem.
Ask Dave @ Hurricane as he is Canadian dealer for JE 613-925-5171
www.powderlites.com

 

[Himark]

Are these performance parts? If so please read following disclaimer.


Caution modifiying changing or doing anything other than stock will void your warranty. If your sled is under standard warranty and any MODIFICATION has been done your warranty is VOID. If you ride your sled in tempatures outside of our testing values your warranty is void, if you ride your sled at more than 3/4 throttle VOID, if you do not use this oil its VOID, if you etc. etc. etc. etc. and lastly IF you TURBO your sled you are ****ed... If you do not understand any of the above just grab some sand and pound it into your pudd. If you cant understand this or do not agree dont modify! If you buy modified parts thinking they will supercede all above you are dreaming. Sorry to be so blunt but truth is the truth.

 

[zebiraross]

Could you post some pictures?

 

[xrated]

if they made the pistons for Turbo use, AND are making new stronger ones, they must be aware of a problem and should help you out.

Do I get free pizza for siding with ya

 

[Boost Leak]

please show us some pics, pistons and rod bearings, it would be nice to see if the bearings are pounded or if they were just too tight. If you can please post your rod journal numbers and the bearing colours. Are the rods stock? or are they carillo's. carrillos require a different size bearing than stock, did you check the bearing clearance's when you put it together?

 

[powderbound]

High performance = Some blow-some go

You are on your own

 

[EZmoney]

We have never seen them crack ??
You must be runing lean or too much boost for your fuel.
Are all sleds have same setup or different turbo/super kits?
Just had a look at a JE Nytro turbo setup and everything look good.
Detonation must be problem.
Ask Dave @ Hurricane as he is Canadian dealer for JE 613-925-5171
www.powderlites.com

Ive heard of a few cracking now as well, not to lean, nor detonation. Problems were with motors only with JE pistons.But yet 0 problems with guys with after market rods and stock pistons or just a complete stock set up with a head shim. If you like, i know a guy that has a couple brand new sets of JE pistons he does not want to put in his sleds nor his customers,maybe you would like to buy them Dave and use them?? I could see if he still has them if you like? That is if JE has not taken them back yet. As far as Motly being out of line. You are far from, they should look after ya after spending that kind of money for quality and using for a turbo application.They should do something for ya. IMO.

 

[Motleyone]

Thanks for all the posts. I do not have pics but will ask my dealer and installer to keep all the damaged parts so I can take pics. The bearing damage was caused due to oil pressure loss on a leak. I run Carillo rods and the bearing were specked out and if I recall were 2 sizes off from stock. The motor work was done by one of the best. My only issue here is that it is happening to others. I ALWAYS ran straight 110 in my sled and never over 18lbs-20lbs.

 

[powderlites]

JE Pistons

Ive heard of a few cracking now as well, not to lean, nor detonation. Problems were with motors only with JE pistons.But yet 0 problems with guys with after market rods and stock pistons or just a complete stock set up. If you like, i know a guy that has a couple brand new sets he does not want to put in his sleds nor his customers,maybe you would like to buy them Dave and use them?? I could see if there still for sale for you if you like.If Je has not taken them back yet? As far as Motly being out of line, you are far from they should look after ya IMO.

Ezmoney: I am only saying what we have seen so far in our shop or heard from customers asking about pistons.
I use stock pistons gas ported and never touch the motor all year.

Motleyone: I was just trying help out and need more info on setup with boost etc.
How many guys are having problems with JE ?
It does concern me as we have had a engine with JE pistons in our shop but everything look good.

Quote: Motley I ended losing 2 rod bearings and while the motor was torn down we found that each of the 3 JE pistons had cracks in the skirts.
Rods bearings!! Deto gods have been pounding the motor apart!
Good luck but don't just replace parts find out what really is wrong and fix it first. Too many guys that don't tell the truth about problems with engines etc.
www.powderlites.com

 

[Motleyone]

There was no visable damage on the piston tops from deto. We are positive it was an oil starvation issue that caused the rod bearing damage. I probably saved myself about $3000 shutting it down and pulling it out when I did. I know of 4 sleds running the higher boost numbers that are having the same issue. The biggest issue here is that most guys running turbos with motor work do not tear their sleds down to the crank every summer to "check them out". How many guys are going to get out next year and have their pistons go boom. How much other damage will be done because of it? Turbos, valves, rods and bearings etc.

Other sleds running 15lbs or so are not seeing this issue. JE was sent one of the pistons. If deto had been an issue they thought contributed to the damage they would have said so. I guess part of the issue is the half shirt piston that is used in the Nytro, it is hard to beef it up but why did they not do the best job they could at the start. JE is apparenlty just adding material and adding some webbing.

I run the Garrett 2871 with the .64 turbine housing. The piston are JE at 9.
6:1 compression, I went with the low comp pistons in part so I did not have to mess with the timing due to the head being lifted with the shim. No shim just the stock gasket. It has Carrilo Rods and I also have titanium valve springs in her. I run the prologger and Pure Logic box and I constantly run logs to check my AF ratio. I know how important it is at 15lbs to have your AF on the money and at 18-20 lbs it is vital. I always check it and before large pulls I run do some 4-5 secons run ups to check the numbers on the log.

Ezmoney: I am only saying what we have seen so far in our shop or heard from customers asking about pistons.
I use stock pistons gas ported and never touch the motor all year.

Motleyone: I was just trying help out and need more info on setup with boost etc.
How many guys are having problems with JE ?
It does concern me as we have had a engine with JE pistons in our shop but everything look good.

Quote: Motley I ended losing 2 rod bearings and while the motor was torn down we found that each of the 3 JE pistons had cracks in the skirts.
Rods bearings!! Deto gods have been pounding the motor apart!
Good luck but don't just replace parts find out what really is wrong and fix it first. Too many guys that don't tell the truth about problems with engines etc.
www.powderlites.com

 

[powderlites]

JE Pistons

What type of fuel and what altitude?
How much boost?
Because pistons are built for turbo deto might not be visable on piston tops.
Check head chambers squish area first.
14 years ago I had deton which only show up with broken ring lands on turbo Yamaha. Bad fuel at 10 psi boost on long pull.
If your engine is running hot and you add boost it can deto at a lower boost.
How hot your intercooler?
Remember on a short header turbo it can backup heat and back pressure into engine causing this problem sooner at a lower boost level.
You are right about guys always having problems when they start next season because of heavy deep snow and hard pulls bring out the weak spots.
Post some pictures so we can see how it looks on the inside.
Only time we have seen oiling problems on Vector/Nytro is when deto or up side down and on restart the guys take off too soon and get code for no oil pressure.
What type of oil?

 

[BEERWALKER]

cracked skirts....im thinkin detonation

 

[BigRed118]

What does JE say that max boost should be with 9.6:1 pistons?

 

[Motleyone]

What type of fuel and what altitude? 110 Sunoco
How much boost? Tops of 18lbs
Because pistons are built for turbo deto might not be visable on piston tops.
Check head chambers squish area first. Checked cylinders and head and no visible signs.
14 years ago I had deton which only show up with broken ring lands on turbo Yamaha. Bad fuel at 10 psi boost on long pull.
If your engine is running hot and you add boost it can deto at a lower boost.
How hot your intercooler? It would get warm but only on long pulls but not so hot that snow would melt fast off of it.
Remember on a short header turbo it can backup heat and back pressure into engine causing this problem sooner at a lower boost level.
You are right about guys always having problems when they start next season because of heavy deep snow and hard pulls bring out the weak spots.
Post some pictures so we can see how it looks on the inside.
Only time we have seen oiling problems on Vector/Nytro is when deto or up side down and on restart the guys take off too soon and get code for no oil pressure.
What type of oil?

Yamalube

 

[Bacon]

Welcome to the expensive world of mod sleds!!!

 

[sled_guy]

Let it go, welcome to the world of mods.

sled_guy

 

[Motleyone]

Thanks again for all the replys.

 

[Polarisrocks]

I have heard lots of complaints about sunnoco 110, hater lost a motor from it, I dthink its the best or enough fuel for how much boost you were running. I feel for ya, ya lost a coulpe valves and it totaled a je corrilo apex motor on my 1 ride this year, then descided to run 13-14 with nohead shim and it ovaled the cylinders by ten thou. so I dont think the reliability is there once you go beyond the head shim. I am going hurricane race block this fall, 2500 plus shipping just for the block. I just havent seen alot of success stories, not saying they're not out there. Who built your motor of you dont mind me asking??? shoot me pm if thats better

Jim