BHP Rating of STi Rods?
30 August 2008, 03:42 PM
#2
what year?
Classics all rods were the same 350bhp max to be on the safe side.
later models, bug eye onwards were stronger. I managed 452 bhp on a standard EJ257 Bottom end but that really was an expendible engine so I wouldn't advise any more than 400 on later stock rods.
Classics all rods were the same 350bhp max to be on the safe side.
later models, bug eye onwards were stronger. I managed 452 bhp on a standard EJ257 Bottom end but that really was an expendible engine so I wouldn't advise any more than 400 on later stock rods.
30 August 2008, 06:13 PM
#4
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what year?
Classics all rods were the same 350bhp max to be on the safe side.
later models, bug eye onwards were stronger. I managed 452 bhp on a standard EJ257 Bottom end but that really was an expendible engine so I wouldn't advise any more than 400 on later stock rods.
Classics all rods were the same 350bhp max to be on the safe side.
later models, bug eye onwards were stronger. I managed 452 bhp on a standard EJ257 Bottom end but that really was an expendible engine so I wouldn't advise any more than 400 on later stock rods.
I was guessing about 400.
30 August 2008, 07:45 PM
#6
Daz I ran a standard P1 bottom end at 1.6 bar and made 389bhp and 363 lbft of torque and ran it like that for 30000 miles no probs but did run it with 10% methanol.
The classic rods will not take more than 1.7bar boost but the newage rods are much better.
Banny
The classic rods will not take more than 1.7bar boost but the newage rods are much better.
Banny
30 August 2008, 10:35 PM
#7
There's an exception to every rule 
My 2.5 was the same. Everyone said 400bhp no more, I ran mine at 450 for 7k Miles without issue. Obviously as some people take people's advice on here so I like to build in a margin of error in case of come backs 
My 2.5 was the same. Everyone said 400bhp no more, I ran mine at 450 for 7k Miles without issue. Obviously as some people take people's advice on here so I like to build in a margin of error in case of come backs
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31 August 2008, 09:35 AM
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The main factor that comes into play at these levels (400 & above) is what the rev limit they are used to and for how long.
I still have standard rods in my EJ257 running over 400 of each, but is limited to 7K rpm.
I still have standard rods in my EJ257 running over 400 of each, but is limited to 7K rpm.
31 August 2008, 12:51 PM
#11
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I second that...it's the rpm and torque output you want to run them at that determines whether you break them, not a particular power or boost level. You can get high boost engines that run lowish power and low boost engines that run very high power.
