well the last few days i have a little back fire problem and i figured it was nothing, i was gona change the plugs later today, wel i got on the highway and gave it some in third gear, it started back firing and just let out on last boom and all i saw was smoke oil and more smoke in the cab, it was very scary lol. but im not gona say i couldent see it coming. i have been on boost for 24 thousand miles and non of them were easy miles so i have to give it to the little fit motor, held up prety good. so now there is a hole in the front of the block and half the oil pan is gone. i found the rod cap about 300 feet away from the car in the 1/8 mile long trail of oil and metal parts. i should have a new motor in a little after this weekend.

 

psi? afr? zomg plz
I thought your car was tuned? oh man. k20 next?

 

That looks like a main bearing cap to me my friend, and judging from the way it is bent I'd say the crank tried to walk out of the bearings on you. Will the motor turn at all or is it frozen solid? You probably starved for oil somewhere and it seized right up on ya! More pics and a post-mortem please! Oh, and sorry about your luck! LOL

 

holy crap that sucks man.

did you buy the motor off the guy selling his in the FS section

 

sucky. what engine is next though? Just the l15 again or something more perty lol.

 

Totally sucks dude. 24kmiles isnt bad though considering the motors conditions

 

10 psi 12:1 afr

 

WOW that sucks... How many much boost were you running??

 

what was the final psi tho? I bet it was like 13 or something. boosting is addicting.

 

lol heres the amazing thing THE MOTOR STILL RUNS on 3 cylinders and a hole in the block

 

yes the car should be running by next week

 

10 psi the spring in the waist gait wont let it go more then 10

 

God bless the engineers at Honda for a damned good product! In looking at the photo again, I was wrong thats a con-rod cap, not a main. I would imagine that when you take the head off, you'll find that piston (burnt silly, if not burned clean through) still lodged in the cylinder. The backfire was detonation, and it was probably pushing the fasteners on that con rod right to the brink every time it happened. That is pretty awesome that the motor will run with that much damage! I'll never call the L15 a weak sister again thats for sure! Now as to why it was only detonating on one cylinder.........

 

only 10 psi and it went boom? uh oh.
i thought you had boost controller.

 

Oh man i've been there! Melted a forged piston on my DC5 like five years ago. Boost spike sucks ass!!!!!

Goin supercharger this time?

 

tune or not this could still happen !

 

Jesus Christ, first the "truck tire" thing, now this?!?

 

Ooo, that's gotta suck. I'm getting close to your mileage. I'm at roughly 22k miles on my turbo. How much is getting a new engine in?

 

ok well i started taking things off i got the harness out and the turbo is out . OMG look at that hole and thats my underpanel cover

 

If it aint built for boost then dont boost.... or be prepared to replace engines.... Go N/A or start building... Whos going to make a fully tunable ecm for the fit come on.... I think they would sell a bit of them...