best pistons for turbo yamaha?

roughrider99

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• Oct 22, 2011

• #1

Hey guys I was wondering for those that have built up their motors, which company seems to make the best/ most reliable piston? J&e and cp are the 2 brands that come to mind, also looking at running 10:1 compression, at 18+ psi would the fuel requirement be pretty much race gas or would 50/50 mix suffice?
Thanks
spenser

 

xtrememotorworks

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• Oct 22, 2011

• #2

We run run CP pistons built to Impulses specs, gas ported, bigger ring land, coated wrist pin etc. We run as much boost as the knob will allow and they been working great!

 

RACINSTATION

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• Oct 22, 2011

• #3

X2 on CP. We have had great luck with them.

I have talked to several guys that have run Wiseco with good luck, but I don't want to risk it.

 

T

twsandrew

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• Oct 22, 2011

• #4

I think you will do well with CP or JE but IMO the pistons are really not the weak link from my limited understanding. It is the abuse on the bearings and rods from deto. All the guys I know run JE but I know Paul

 

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nytrocharged

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• Oct 23, 2011

• #5

Carillo Rods, JE Pistons, Head Studs i run in my alpine turbo 20psi all day long

 

Motleyone

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• Oct 23, 2011

• #6

Get a set of JE's from hurricane performance, beefed up for turbo applications. Do rods before piston though, they are the week link over 20 lbs. As for fuel what kit are you running? With the Impulse Standalone and an inexpensive meth injection kit you can run 91 octane up to 17-18lbs all day long and never have to worry. (at 6000' and up).

 

Last edited: Oct 23, 2011

roughrider99

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• Oct 23, 2011

• #7

Building up motor for high HP and top reliability, carillo rods were a given, and also planned on meth Injection, just wasn't sure on pistons I've heard good and bad on lots of em. Not sure on what kit I will go with, prolly impulse but im not too sure about going standalone, I like the boost it setup. Has anyone been doing anything with main bearings or is stock just fine?

 

Last edited: Oct 23, 2011

P

pylon

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• Oct 23, 2011

• #8

The only nytros I've ever pulled off the mountain have had JE pistons in them . I'm going with cp pistons in mine. wiseco makes some for boosted nytros too

 

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BigFish BC

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• Oct 23, 2011

• #9

wiseco for me never had a issue with them

 

roughrider99

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• Oct 23, 2011

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pylon said:

The only nytros I've ever pulled off the mountain have had JE pistons in them . I'm going with cp pistons in mine. wiseco makes some for boosted nytros too

Click to expand...

They were all piston failures? What caused the failure?

 

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zebiraross

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• Oct 23, 2011

• #11

Apex-je or cp
Nytro -cp or stock

For some reason the nytro je's had a high failure rate of cracking.

 

P

pylon

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• Oct 23, 2011

• #12

they were cracking and the rings are placed very high up on the piston . I got my cp pistons on friday and they look pretty impressive .

 

Motleyone

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• Oct 24, 2011

• #13

One was me and it had nothing to do with teh pistons, it was an improper valve seat installation by a shop that caused my dual rate springs to bind and cause ridiculous damage.

roughrider99 said:

They were all piston failures? What caused the failure?

Click to expand...

 

Motleyone

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• Oct 24, 2011

• #14

One was me and it had nothing to do with the pistons, it was an improper valve seat installation by a shop that caused my dual rate springs to bind and cause ridiculous damage. JE had issues with the very first Nytro pistons but have since fixed the issue. I run JE's from Hurricane Performance with all the bosst I want and have had no issues.

roughrider99 said:

They were all piston failures? What caused the failure?

Click to expand...

 

P

pylon

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• Oct 24, 2011

• #15

I didnt pull you down ,just came back to a shiny nytro on the back of my truck :face-icon-small-hap . still no idea how 2 guys got a dead sled up there though ? When are you and Shane comming north to rip it up ?

 

Motleyone

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• Oct 25, 2011

• #16

Ill be up hopefully on December 26 for a few days with Paul and the boys.
I'll tell ya what, it was no easy task getting that Nytro up a sled deck with only 2 guys. :face-icon-small-con

pylon said:

I didnt pull you down ,just came back to a shiny nytro on the back of my truck :face-icon-small-hap . still no idea how 2 guys got a dead sled up there though ? When are you and Shane comming north to rip it up ?

Click to expand...

 

Last edited: Oct 25, 2011

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Washy

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• Oct 25, 2011

• #17

Where are you guys buying the CP pistons?

 

R

Remmy

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• Oct 27, 2011

• #18

Been running JE 10:1s in my Apex. No problems.