T04Eneedy

im curious whats the maximum horsepower anyone has seen on s4 iron's.im curious because im aiming for 550-600rwhp on my gt42,large port,pinned s4 iron's on c16.

thanx alot
aaron

T04Eneedy

i know there is somebody that has seen some decent dyno's with s4 iron's

Carl Byck

I dyno'd 500+ on 111 with a street port, and a turbo half that size. A PT67 with a 1.00 split hotside P, or Q trim will easily make that power, and the irons are not a limiting factor. 50 more HP on my set-up (.81 P trim) would be cake for Drag, my car is set-up for road racing, and will be ~480rwhp @ 20 psi. I think there are a few guys over 600 for drag. Carl

Slammedblk7

iTrader: (7)

Im at 480rwhp on my S4 Engine..not pinned nothing fancy...i should be in the mid 500s once i go back to the dyno. the S4 irons are pretty strong, you have anything to worry about.

BDC

My ears are burning -- yep, the S4 block is plenty strong. It will do the power.

B

Klar

One PM and both of them show up. Amazing...

BDC

Look buddy, we don't need your trash here

B

Klar

Shush before I spray water on you...

BDC

That's right!! Get back to your job.. water boy!!!

B

Johny zoom

iTrader: (5)

I broke my rear iron there is a weak spot in the rear iron I was only pushing 280 hp. It is being rebuilt with the iron from an s5

bigdongsr94

ive heard there is a weak spot on the rear iron as well, thats why on the s5 instead of the iron having a 90 degree bend it has a chamfer or a little angle piece for renforcement

tearbo2

iTrader: (2)

:



I had problems @ 400hp but I did have the stock ecu @ the time, you should be OK , as long as you keep the timing under control.