bearings failure have happened on boost levels over 10-12 psi ...ie over 400 lbs of tq
8.5-9psi is "safe" on stock vq

there is the over reving.... missshift but that can break any engine using any FI application

Still less power = more "safety" but @ a certain pSi they are both safe anyways so id take the one that puts out more power ...@8psi

 

Here's my question.
Even if the engine is built with forged internals, that just means the engine is more reliable than stock, but it won't be invincible, right?
Is there any occasion where built engine blew up with a mild tuning that some stock engines can handle(at least for a while)?

 

what sort of 8 psi are we talking here?

8psi with 3.5 inch test pipes and dual 3 inch exhaust and cams?

or 8 psi on a stock car, maybe an exhaust?

Because they're going to have hugely different power/tq numbers but still hit 8 psi
psi isn't really a measure of power, it's a measure of resistence of air flow



sure, nothing is ever invincible
I'm sure someone somehow blew their built engine with a mild tune. It could be due to all sorts of things

 

+1 but you have a greater chance on longetivity on the engine.....asuming everything gets done right in the first place

 

Forged engine is definitely stronger than the stock engine and can handle alot more abuses and horsepower... BUT.. forged engine can also fail if the builder didn't build it with precision. It seems as though most of forged engines fail due to perpheral component failures or human errors (mapping).

 

OK, so when the engine fails due to too much pressure, it's the internal part that goes wrong, but never the block itself, right?

 

if a rod breaks, the block is ruined

I haven't seen a case where the vortech caused rod failure that the owner wasn't asking for it

 

Jp.. On the 3.12 pulley with a plenum spacer, 2.5 exhaust(y pipe style), test pipes, walbro and a tune(by sharif) i made 395/325 on a dynojet.

 

THANK YOU, THANK YOU, THANK YOU, THANK YOU!!!!!!!!!!!
I've been searching and reading for almost a week trying to find my answer and you, Leeboy, have given it to me. I am also looking to build my motor by next summer and wasn't sure which route to go, SC/ST or TT. Now my only fear is, as it was put to me by a friend, with a TT setup there are more parts to break! LOL