How far on boosted 8 pistons

[backcountryislife]

Got an 11 with 1700 10-14 psi miles, and was planning on doing a top end, but wondering how far other people are going with those pistons.

Also wondering, are most folks replacing those pistons with the 09 piston, or leaving the lightweight ones?

I'm usually a big proponent of swapping pistons early to avoid taking chances, but just curious what other guys with that kind of boost are doing.

 

[RACINSTATION]

I would freshen it up now. I would use the 10 pistons. We see them go a lot of miles, but the problem is when they fail it is to late to go back. I tell most guys to do a fresh top end every 1500-2000 miles or more often on high boost.

 

[WyoBoy1000]

My understanding is the 09 pistons are cut different than the '10-'11 pistons???

 

[hatchers]

08 M8

Stock Set - 2000 miles, two diffrent T kits most miles on a 2860, 10-16lbs, mostly 110 sunoco straight and redline syn, pulled pistons, looked great, pins came out like butter

Second Set - 1000 and counting, going back to a 60/40 mix of 110/91, finally got the boost juice gel bug a couple days ago but somehow i ran the sled all last year with gel in my tank?, lucky i guess?

i think most of that is correct?

sidenote - ive hit my knock sensor a million times, folks who think this sensor is the bible of deto are the same folks who....ah who cares

another note - if you rarely hit your knock and its annoying, move it off the engine and ride happy

 

[backcountryislife]

another note - if you rarely hit your knock and its annoying, move it off the engine and ride happy

I hit mine every day! Annoying as it may be I've only ONCE actually heard real det... so I'm fine with a slightly overactive sensor... keeps me safe. I turn the knob till it gets pissed, then go back 1/2 turn! best way to figure out where I can be that day. That's about all I do for "tuning" on this sled!!

I had heard that people were doing the 09 piston in place of the 2010+ one on boosted setups, I know it works, just wasn't sure if there was any detriment or if it was a big difference in reliability.

 

[harf69]

Im running a 08 m8 that I bought from brad and it ran most of its life at 12 lbs and when I got it I freshened it up at 2000 miles all was well except I had some piston pin wear

 

[CO 2.0]

I dropped a piston skirt with 2000 miles on my stock 2010 M8 Kaleb. I'd be replacing them just for safe measure.

 

[knzee]

I put 09 pistons in my 2010 m8 at the begining of last year and never had any issue. I was told by a couple different people that have worked on a boosted motor or two that they were changing to 09 pistons if it needed a top end. The reason they said was that the 09 pistons were less prone to cracking if you did have some hammering on them from detonation.

I hit mine every day! Annoying as it may be I've only ONCE actually heard real det... so I'm fine with a slightly overactive sensor... keeps me safe. I turn the knob till it gets pissed, then go back 1/2 turn! best way to figure out where I can be that day. That's about all I do for "tuning" on this sled!!

I had heard that people were doing the 09 piston in place of the 2010+ one on boosted setups, I know it works, just wasn't sure if there was any detriment or if it was a big difference in reliability.

 

[SHOP!]

I change them out every season or 1,000 miles only $250 cheap protection and you have good spares. I run my stuff hard though.

 

[WyoBoy1000]

Do you guys check tolerances when you do it, or drop and go.

 

[backcountryislife]

Do you guys check tolerances when you do it, or drop and go.

I make sure they fit into the hole... like every time!

 

[bradburck]

Pulled mine this summer after about 1000 miles last winter. Looked great. Good wash on 10 lbs with 90% 91, rest 108.

09 pistons.

I would say 1500-1800 is limit, only cause of wear and tear. Plan on replacement after this season.