[Modified by canuck-mx6, 12:49 AM 3/19/2002]

 

ohh the horror

 

 

Pistons don't look too bad, just a few contact marks. I'd get the head done with new valves and valve seals then check the compression and do a leak down test. None of the valves broke off right, so there were no metal chunks in with the pistons right?

 

damn bro!

what are your plans after this?...are you gonna re-build it again?

 

Wow did you figure out why this happened yet?

 

the hell..did u rev to 13000 or sumthing?!?!? the valves went really down!!!

 

Ouch!

 

any pics of what the head looks like?

 

Ouch...when you said you broke the cam you weren't kidding, that's a lot of pieces.

 

I shipped the head to JUN today, so they will examine it and let me know their findings. The head was not that bad....the exhaust valves were bent, so they did not sit in the valve seat properly, but they were not bent that badly.

I will rebuild again. I will use JUN cams if they pay for the damage, if not, then I am going skunk2 or Toda......
The Juns have left a bad taste in my mouth

For those who want to see the head, I have posted a large pic here. The pic is huge, so I did not post it on the board


[Modified by canuck-mx6, 2:21 AM 3/19/2002]

 

best of luck bro

 

he only put 250KM on them before this happened...not sure if you wanna call that "normal" use

 

Ouch... damn, sorry to see those pics, Wayne. And it's the beginning of the season too

 

I dont know the whole story, but from the looks of it, it seems that :
1. either the head or block was milled way too much resulting in valve to piston contact
2. the exhaust cam slipped or was adjusted way too far
3. Mishift at high rpms

But from the pics I am not surprised the cam broke as the valves hit the pistons really hard and something had to give. Usually its the valves that go though. Got any pics of the valves?

Of the miles you have on the cams, How many miles was actually in VTEC. I suspect that the cam was installed off and it ran okay on the low lobes, than when the high lobes(long duration) kicked in, WHAM. broken parts.

Keep us posted on the outcome because I am very interested in what JUN will say is the cause of broken cam.

 

nah if they hit the vales would have bent way before the cam broke.

 

True, Unless they played with cam timing, although I believe he said they had'nt. Those look like CTR pistons to me, those suckers have a hell of a dome on them.

 

better make sure the whole motor is still good........

 

ouch!

 

tear....

 

The block has not been milled.... remember, there was no damage on the intake side
Cam gears set at 0,0. We never got a chance to do any cam gear tuning. The run was done at Dyno Power services in scarborough.
No high RPM shifting was involved in the dyno run. The run was done in 4th gear and the cam broke after the run was over, the technician's foot was off the gas and the engine rpm's were falling.
The valves were bent, but not that badly, look at the previous posts and you will see a large pic of the head with the valves
No many of the 250 km were in VTEC. WE did the vtec tuning on the Hondata 60 km to the dyno, on the highway. On the first run, the A/F ratio was good. We had tuned the fuel and timing, but not the gears.
JUN has the head now, and I will keep you guys informed about what they say

 

did anyone notice that the cam broke between the same two lobes in all four places??

Jun workmanship

 

hey where did you get these cams? is it in Toronto?
Also who was trying to tune your car while you were at the dyno?

 

The cams were purchased from the US.....They are way too expensive in Toronto. The car was being tuned by the only Hondata dealer in Toronto, a small tuner call Neetronics. He knew what he was doing as we had the fuel and timing maps set in only a few runs in the street. The car went from feeling really sluggish (using the stock maps) to feeling really peppy, and no more bogging.

 

that pic deserves a
HOLY ****!