block cracking issues?

[somedude_001]

I have been on the audi forums a LOT the last couple years and something I have been coming across is block cracking issues. One recent thread got me a little worried on my SHO powered camaro build. It is a completely different engine design but I though oh wow if it can happen on that thing I wonder if it could be a issue on my camaro once I really start to crank on that massive turbo.

this is a audi 2.7L V6 that suffered breakage due to massive power 700+whp

then searched around to see if the area under (or above) the mains on my 3.2 SHO engine has a weak spot like on the audi.

nope there is a massive amount of steel there. It has got to be close to a inch thick all the way to the cylinder bores. Hopefully that means I am good.

 

[SHO Continental]

You'll snap the crank in half first.

 

[rubydist]

yeah, the SHO block is pretty stout - that is why it weighs to darn much...

I want to see that 700 hp dyno though....

 

[somedude_001]

yeah, the SHO block is pretty stout - that is why it weighs to darn much...

I want to see that 700 hp dyno though....

I don't know if I am ambitious enough to go for 700whp but I really think I will have my never ending project car running this year.

 

[Phoenix]

We also have the cracked block issue.

When the rod goes through.

 

[Off Road SHO]

Other parts of the SHO engine will become weaknesses long before you will damage that block. One will be rod bearings; our are too small for large amounts of torque.

Tom

 

[waffles]

We also have the cracked block issue.

When the rod goes through.

That comment made my day.

 

[somedude_001]

Other parts of the SHO engine will become weaknesses long before you will damage that block. One will be rod bearings; our are too small for large amounts of torque.

Tom

I will keep everyone up to date on how my camaro holds up. Hopefully i can set some reccords within the sho community

 

[yamahaSHO]

It's pretty easy to see why that block failed. When you figure it out, you will realize that the SHO motor does not have that terrible design.

 

[dohcsable]

You'll snap the crank in half first.

Didn't someone on here end up with crankwalk awhile back? :swing:

 

[zach44102]

Didn't someone on here end up with crankwalk awhile back? :swing:

*cancer

And yes quite often too

 

[Jarrod]

Wow. I can't believe those 2.7s have mains like that. That window is ridiculous. That's one of the reasons the later second gen Trans Ams with the Olds 403s were considered such turds.

 

[somedude_001]

it happens north of 700awhp and the easy (not cheap) fix is to use a RS4 block instead of a s4 block. From what I read a crank griddle goes a long way too... imagine that. oh wait the SHO engine already has that too. Too bad ford didn't improve this engine for the 96+ SHO and continue its life. Everything about the V8 SHO bothers me other than the stellar exhaust note.