Just wondering what power people have ran on standard internals and for how long before it took a dump.

I know past 350bhp on a classic the gearbox and turbo etc. will need doing at some point, I don't know what the STI engines are good for though.

 

Jap Performance featured an non-forged 500bhp STI that they had been running for a while without issue.

 

Classic or Newage?

 

I know 450bhp is banded about a lot for a stock STi Lump, not sure I'd fancy running 500 tho.

 

Isnt Shaun running 495bhp from his Jdm hawk STi on standard internals!! oh and standard clutch.

 

To be fair ive seen a few classic type r's running 400bhp with standard internals, just have to look at stuarts V6 STi type r that was for sale on here!!

 

As said, newage or classic?

Newage STI will see 400-450 for fun, clearly cars suffering "issues already present" will have a greater chance of termination when pushed a little harder.

I know of a few that have run 500 the marker, and I think one of Martyn's cars have seen close to 600 on a standard engine.

 

(cough cough) what about a hawk sti

 

Ran 311 at the hubs on a version 5 sti bottom end and box, also ran 522.5bhp on a newage sti engine with sti 3 heads

 

With some of those figures im thinking of buying a new turbo, getting a map tweak and then saving again for a 6 speed setup when the 5spd gives up.

I cant seem to paste my current car up thats in the for sale section.

Would 380+ be seen as ok on a v4 sti engine?

 

Somebody on here is running about 450 bhp (standard internals)

 

Who??? Would love to know the spec??

Im at 380/412 on standard hawk sti internals, would love to push it to its breaking point.

 

I ran my hawk WRX with standard internals at 410 brake for a month then turned the wick down to 380 brake and had great fun for 2 years and it never missed a beat appart from the 5 speed box ****ting itself once. Engine was perfect and i sold it running perfectly. I would like to know what its like now Reg no DU56 GNY if anybody knows ?

 

Sorry mate just had a look through my history and it was you I was thinking ove. It was your torque that confused me.

 

uk hawks **** themselves with ppp fitted

 

Hi an update, I bought it a few months ago!

 

The world record 1/4 from a standard bottom end was from a car running up to 600whp..


...and it was a 2.5!!!

 

doesnt take much though, a lot of people are running mid 400's with no problems on standard newage sti internals

 

I had 443/430 on standard internals.

 

Classic STI internals are alot different from newage STI internals remember.
I wouldn't fancy pushing a classic much past 350.

 

Link ???

 

The latest answers to the thread title are here -> https://www.scoobynet.com/941285-sco...l#post11205443

 

Didn't Harvey run a Classic at 450 ish with a 5 speed.

I would also say it depends how brutal your going to be with it, smash the **** out of any car and your going to break it, it's only a matter of time, and that includes cars with up-rated everything.

 

Why does everyone still doubt me!

http://forums.nasioc.com/forums/show....php?t=2497782

666bhp last time it was dyno'd but he thinks it was making more when it did the drag run. High "5**whp" that could mean it was pushing 750bhp.

TBH a top UK Scoob tuner was bigging up the 2.5 engine to me recently saying it's a cracking engine if you keep the tune safe. More I read about the much-maligned 2.5 points to boost creep and owner mistakes hampering it.

 

You can run a classic STI at around 390/400bhp on the standard bottom end.

The problem I think is with the boost pressure vs. the conrods. I think if you were on a budget and threw in some newage rods and uprated bolts you could run a fair bit over 400bhp safely on a classic STI piston setup.

After reading alot about the newage engines vs. the classic engines it seems as if the fancy hyperblabla pistons in the newage aren't as 'strong' as the original forged pistons.

 

Do newer UK Scoobs run the softer pistons due to cold start emissions regulations? I.e. they seal the cylinders better before getting hot? I've read forged pistons can cause low compression until operating temps are achieved.

Or is it a build cost thing?

 

It's the rod bolts in the classics that aren't up to the job, in particular the pressed in type.

 

what's the weakest point of the UK 2.0 Newage WRX engine that makes running over 350 risky??

 

cheap internals, built to a budget unlike the performance version

 

So all the internals simultaneously fail at once?

...sounds like another of your lies.