Right up to the point it blows up!!.... then you have a $3,000 boat anchor.
Gnarls
As long as you are reasonable w/the boost no issues w/reliability. Most of the "boom" stories come from newbies who buy a used one, then crank up the boost w/o any idea of the state of the engine, then comp;lain when an HG goes.
I have read many many posts on HP numbers, but rarely - and I mean rarely - are those posts ever backed up with any certified dyno tests. Perhaps I'm just a skeptic, but until I see some data.... .all those numbers are just HAPPY Bravo Sierra to me.
Regarding reliability of any DIYer highly modified-from-stock engine, IF I saw the numbers produced on SuperFlo engine dyno or a Mustang chassis dyno, the next condition I'd want to know is what is the mean time to failure.
Gnarls.
Plenty more here
MK3 Dyno Sheet Thread, a couple of the higher end builds are above 700rwhp.
This guy is running 1000+HP, mid 700's on pump gas, granted his is an extreme build, but the 1000HP is done on the stock crank and bearings.
I don't believe that a different head gasket and ARP studs, and a "proper rebuild" (what, as opposed to the factory's improper build?) will "resolve" the inherent design flaw in those engines. A new head gasket of course will repair it.
Gnarls.
The HG issue which most of them suffer from was due to EPA ban on asbestos in the HG, and Toyota not coming up with new torque numbers, not until the BHG's became an issue.
"Proper rebuild" has nothing to do with the factory, it has to do with not cutting corners and/or reusing used parts when rebuilding the 7m.
