Wish I would have went that way instead of 2.0

tom will you be getting the head work done to the chambers while its out ? i know its a 50/50 thing on the fourms i just pulled blue91 old motor apart last week that sucker was loud 24/7 with je pistons i thought it was a ptw issue but the bores look great.

regarding the piston slap i dont know. i think it can go both ways. it can be bad (piston wear / etc) or it can just mean the PTW is on the loose side and before the piston gets hot and grows you will get alittle noise.

The rods im referring to are manley turbo tuff 300m alloy. its the next step up from the regular 4340 steel.
http://www.manleyperformance.com/sc/...g63_rods.shtml


I wouldn't be mad you went with the 2.0L you can rev it to the moon. thats better balanced then a 2.4L is! but you'll be missing out on all the torque and response for sure part throttle and so forth. i am afraid if i go to a 2.0L i wont be happy because of being used to the 2.3L. I was close to just pulling the engine anyways and doing a 2.4 and selling this one, but i never got the chance to do that.. and honestly im glad i didnt, because id feel horrible if i sold it to someone else and it let go like this.

my car lives most of its life on the street, so for me im sticking with the extra displacement for the fun factor.

you mean so it matches the 2.4 cylinders better? i don't know. i don't think so for now. did you measure the PTW on his engine?

Hate to hear this bud!

His motor in the winter when building my motor it was 20-35F outside. Starting it up i sounded like it had marbles in it for alteast 5 mins. First time i heard it i was like, "ummm wtf?" AKA the piston slap was really really bad.

Mine has now about 8,000 miles on it n even starting in the cold it makes no weird noises like a normal motor should.

I TOLD YOU it was in good shape! It was just loud! Hell, I should've kept that thing as a backup.

Wow!!! I cant believe the hole the piston made on the block
Good luck on the Next build.

the piston didn't make that hole, the rod did. that's why the rod is bent. the piston exploded into a million pieces like they normally do when they fail and the rod dug into the cyl wall and flipped around and continued to dig into the block. im glad i put the car in neutral asap or i might have even more damage then what i have now. the only other thing it managed to destroy other then engine parts was the axle, which is a simple boot repair.

thanks man. hopefully i can get it back together pretty soon.

Oh sorry about that mistake . So the piston was complete destroyed in million pieces, So the rod put the hole in the block!! i mean the rod is just bent but my G#$ it took the block out big time. I just need seen a hole this big in the block because of the rod.

Good effort on the block Tom! Time for bigger and better!

Perhaps several major lean-outs introduced some metal fatigue into the piston?

yes i believe a lot of this was triggered by the lean issues the car was experiencing. I'm going to send the pumps out to get tested and stuff. i don't feel comfortable with the fuel system right now.

im also going to get a new hobb switch & this time run it to a relay not direct to the battery.

im going to pull the hobb switch apart also and check for any damage.

ill replace the FPR and some other stuff as well just to be careful and protect myself as much as possible.

ultimately bigger and better would be like a 2009 GTR to me, but im gonna hold off another year for that. but i plan on keeping the evo with the GTR, so no worries there. the GTR is going through the same stages the evo did with cobb and ecutek and etc.. it wont be much longer before you see it open platform like the evo's with raw ecuflash interface.

I'm definitely excited to start building the 2.4 though and switching out the valvetrain and other stuff.

Yeah I would be perplexed until you found the bottom of the issue as well.
Ethanol and dramatic lean outs are a very weird feeling, car still 'goes' but just feels flat like it lost 150hp. lol
Doesn't act at all like pump gas where it will buck/kick and carry on.

A mate killed his motor with a few dramatic lean outs at ~28psi on a 3076 T3 setup. Car just felt 'flat' and he didn't believe me that it was fuel related. A week later he was extracting a piston shaped like the moon.. lol

yep that's what it does. its exactly that. the car will feel flat and dead but will sound like it does normally and will pull right through the lean issue as well and not break up.

yes I'm going to replace everything to be on the safe side. but because the issue is so random i wont feel safe unless i have the pumps tested. if theres a bad pump ill feel much happier knowing what was causing the car to lean out like that.

ive probably done around 15 pulls in total like this lean. it was around 15 afr each time.

i thought i had it completely resolved back in october after i replaced everything, but it came back and this time i wasn't so lucky.

the pull that the engine blew on though was not lean at all. there was a ticking noise before it blew and i remember looking for loose change in the center console, that's why i suspect it was a wrist pin failure. but absolutely running it lean like that does not help at all.

it was a very poor judgement / choice on my behalf to attempt another WOT pull even after i already heard the ticking. why i did that i don't know.

Oh well - live and learn. I'm sorry to see the failure, but I'm sure that you will bounce back better than ever with a 2.4. Keep up the good work you are truly an asset to the entire EVO community.

good luck man.