Toyspeed.org.nz Message Board

by **Steve123** » Tue May 23, 2006 2:38 am

I took a 4th gen 3sgte appart today to find the crank broken! I couldn't believe it. Its a forged crank and the car is standard, done only 80k. Im just wondering if this is common?

no grip · by **Akane** » Tue May 23, 2006 3:20 am

wow, that's hardout. got pics?

by **sergei** » Tue May 23, 2006 10:50 am

I've seen broken crank on 4AGZE, somebody kept driving with run con rod bearing.....

by **fivebob** » Tue May 23, 2006 2:32 pm

Haven't seen that before, even with a couple that have put rods out the side of the block the cranks have been ok.

by **sergei** » Tue May 23, 2006 2:40 pm

I can make picures, it has snapped righ in middle of #2 conrod bearing...

OMG so shiny! · by **Dell'Orto** » Tue May 23, 2006 7:12 pm

Wow, thats pretty impressive...maybe it was just a faulty casting?

by **Steve123** » Tue May 23, 2006 8:10 pm

Sorry about the poor pictures. The engine is still in the car. It looks like its broken right through.

by **RS13** » Tue May 23, 2006 8:52 pm

What were you doing when it broke?! I too have seen rods welded to cranks, sticking out of blocks, even snapped cams, but a crank?

by **fangsport** » Tue May 23, 2006 9:36 pm

RS13 wrote:What were you doing when it broke?! I too have seen rods welded to cranks, sticking out of blocks, even snapped cams, but a crank?

so you've never worked at a Subaru dealership then?? turbo automatic Subbys are famouf for snapping them, even heard of a few that were welded back up, and quickly on-sold :twisted:

by **Grrrrrrr!** » Tue May 23, 2006 10:43 pm

Its not uncommon for four cylinders to break cranks if run at the resonant frequency for extended periods apparently, and removal of the harmonic balancer (built into standard crank pulley) will rapidly accelerate the problem. Also lightened flywheels accelerate the problem.

I know of one 20v 4age in a targa car that snapped a crank straight thru a main journal. then again that was running 200+ NA hp (or so the owners mates brother-in-law told me

)

by **Steve123** » Sat May 27, 2006 8:29 pm

Here we go

It was still running!

by **mr_monkey** » Sat May 27, 2006 11:09 pm

hahahaha, what did it sound like when running?

by **Steve123** » Sun May 28, 2006 12:53 am

Horrendous

by **mr_monkey** » Sun May 28, 2006 12:56 am

put the crank back in, get it going and do some burnouts. I'll bring a video camera.

-Nathan

by **spencer** » Sun May 28, 2006 3:26 am

thats awesome

no grip · by **Akane** » Sun May 28, 2006 5:51 am

Now, this guy is friggin' extreme, with pics to proof it.

by **NZ_AE86** » Sun May 28, 2006 1:09 pm

Grrrrrrr! wrote: removal of the harmonic balancer (built into standard crank pulley) will rapidly accelerate the problem. Also lightened flywheels accelerate the problem.

)

This is a great piece of info that is very often overlooked.

by **SUBARUCONVERT** » Sun May 28, 2006 3:32 pm

fangsport wrote:
RS13 wrote:What were you doing when it broke?! I too have seen rods welded to cranks, sticking out of blocks, even snapped cams, but a crank?

so you've never worked at a Subaru dealership then?? turbo automatic Subbys are famouf for snapping them, even heard of a few that were welded back up, and quickly on-sold

I havnt herd of a subaru crank doing such things, more info please?

by **dotdog** » Sun May 28, 2006 6:49 pm

My mates old GT legacy auto wagon broke the crankshaft in half, and he was told it was a very common problem to

by **mr_monkey** » Sun May 28, 2006 7:19 pm

wow, the autos have a different crank to the manuals?

-nathan

Toyspeed.org.nz Message Board

Broken Crank

Broken Crank

Who is online