Hi Team

Would like some feed back on what people think happened, this occured 3 weeks ago while at a circuit track meet which lasted 4 sessions and then went KABOOM half way down the straight. We pulled it apart this morning and this is the carnage.... Number 1 Manley rod shot out of the sump and block cracked across balance shaft side as well... 8 Exhaust vales bent and 2 inlet

Specs:
Wiseco 85mm pistons 9:1 comp
Manley H-Beam rods with arp 2000 rod bolts that were installed using stretch method
GSC S1 cams 268/268 11/10.5mm lift
ACL race bearings
Brad Penn 10w-40 oil
ATP Gold V2 Billet Turbo 75mm comp wheel ( between green and Red in size) Aussie spec turbo
FIC 1050cc Injectors
Running E75 fuel
Only 26psi boost
Motor had approx 500-600miles on it.

When motor was build it was towed directly to workshop and had the motor broken in under load on the dyno, oil then was changed and I drove it for another 500miles and changed oil 2 more times using Penrite running in oil.

Car went back to dyno on Thursday and Brad Penn oil was used and was given a conservative tune on E75 fuel and rev limited to only 7000rpm as the tuner thought I didn't do enuff miles on the engine and wanted to play safe, was told to come back later and will touch it up with more boost and raise rev limit...

4 days later on Monday took it to the track for some fun and this happened.....


Cracked Block:


Manley Rod:




Manley Rod, bearings and bolts:








Head and Block:




Timing Belt Shredded:



Enjoy!!!

Arthur

Just for the hell of it, pictures of the beast, taken with an old Iphone 3GS, crap pics...



Aussie spec turbo, oooohhh yeah


Coming down the straight before the KABOOOM


random pic

Manley H beams seems to be the only rod I see blowing up and it's not just limited to Evos. Seen plenty of Manley H beams blow up in Subarus too. None of them are as bad as this though. It looks like that rod just melted.

There was def more power applied to the rod than what it could hold... Whether it was some hardcore detonation or a rod defect, I don't know.

I'm willing to bank on the rod defect though. They shouldn't bend like that at 26 psi and 7K rpm REGARDLESS of detonation.

I'm going to say; pre-ignition and the piston trying to compress the spiked pressures. That would provide the force to jack that rod up and send it out the block.

A little JB Weld and you're back in business.

I don't think your failure has anything to do with the miles on the motor. Bearings don't get 'broken in' as they are thermodynamically lubricated (ie no metal to metal contact), and your rings are more than likely seated in the first 20 minutes of the motor running.

BTW, beautiful VII.

Notice the heat marks around the big end and that the rest of the stuff is almost black. I think it spun a bearing and broke the rod from that. Even I beam rods will break when you spin a bearing and heat it up as bad as this one was. Rod don't just break for no reason. Detonation, lack of oil, etc will break them. There are PLENTY of cars with Manley H beam rods that have no problems. If you have an aggressive tune, your car goes lean, low oil pressure, etc is that really the rods fault?

I would like to know what kinda timing it was running.

I run the exact same rod, and have had the car dyno tuned to 430whp after about 50-75 miles or driving. I have now over 25,000 miles on these rods at 500+whp and they work fine.

I remember while back i contacted manley to see what these could hold, and he said i should be fine with 600whp levels for a daily driver.

I'm leaning towards either a spun bearing, heating up the rod to extreme heat as everything is BLACK or maybe detonation pounded the bearing and then the rest happened.....

Jay: When I get a chance I will go past mechanic and pull the timing maps out of the ECU and let posted them up

hahahahahahah




ezzey: I had confidence in Manley as I was making less than 500hp




Blue91lx: As far as Im aware 80% of the breakin occurs within the first 20-30min , but I couldn't convince the tuner and crank it up.


HMatt: I wish I knew the exact reason, maybe need to hire Horatio from CSI lol

I doubt its a rod issue. I would look at the Tune.

I think someone was not paying attention to the torque specs on the rod bolts.

I thought the same and inquired and was told they used stretch method according to Manley spec sheet supplied and not torque as its not consistent