View Poll Results: What motor will hold the most power on the stock shortblock?
4g63
86
94.51%
ej257
4
4.40%
too close to call
1
1.10%
Voters: 91. You may not vote on this poll
What motor will hold more power on the stock block?
Originally posted by chuntington101
Norris design in the UK is running 800+BHP at the flywheel on his evo7 and he use his car as everyday transport!! This is the only 2.2ltr 4 cylinder that I know of that can handle that much!!!!
Norris design in the UK is running 800+BHP at the flywheel on his evo7 and he use his car as everyday transport!! This is the only 2.2ltr 4 cylinder that I know of that can handle that much!!!!
Keith
Originally posted by Braf
Our experience is with the Evo variant of the 4G63. I would welcome correction on this but I think the Evo engine is fitted with cast crank and rods. When I have had occasion to look at the rods they certainly appear cast to me.
Our experience is with the Evo variant of the 4G63. I would welcome correction on this but I think the Evo engine is fitted with cast crank and rods. When I have had occasion to look at the rods they certainly appear cast to me.
Even DSM's run a forged crank from the factory, just not forged rods. I don't think they'd put cast cranks in the Evo VIII's after putting forged ones in the DSM's for all these years.
Considering I've seen DSM's run 500+ hp at the flywheel on stock internals, I'd put the Evo over 600 hp at the flywheel before stuff starts breaking. Maybe even more.
Evolving Member
Joined: Oct 2002
Posts: 152
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From: Third rock.
Originally posted by natedogg
Even DSM's run a forged crank from the factory, just not forged rods. I don't think they'd put cast cranks in the Evo VIII's after putting forged ones in the DSM's for all these years.
Considering I've seen DSM's run 500+ hp at the flywheel on stock internals, I'd put the Evo over 600 hp at the flywheel before stuff starts breaking. Maybe even more.
Even DSM's run a forged crank from the factory, just not forged rods. I don't think they'd put cast cranks in the Evo VIII's after putting forged ones in the DSM's for all these years.
Considering I've seen DSM's run 500+ hp at the flywheel on stock internals, I'd put the Evo over 600 hp at the flywheel before stuff starts breaking. Maybe even more.
If someone can point me to an authoritative source to corroborate this I would appreciate the info.
Newbie
Joined: Oct 2003
Posts: 37
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evo 8 has cast aluminum pistons with forged steel con rods according to mitsu's press releases.
http://media.mitsubishi-motors.com/p...detail166.html
http://media.mitsubishi-motors.com/p...detail166.html
If your poll said which motor supports the most HP/L in stock form, it'd be the 4G63 hands down, but considering the EJ257's displacement advantage, the maximum net horsepower is close. The 4G63 still wins in my book, but I think after another year or two in development of EJ257 parts and after the learning curve for this new motor progresses more, the opposite will be true.
Mitsu block= Made of iron 
Subi block= Made of aluminum
The mitsu's iron block is way stronger than suby's aluminum open deck design. Suby's block is very similar to a honda aluminum block. I have a fully built turbo honda crx si with a sleeved iron b18c1 gsr block. There is no way it last long(15+psi's) without iron sleeves. It can be prone to cracking the cylinder walls due to the coolant jackets and aluminum design. Its very popular for the honda crowd to install iron sleeves or at least a cylinder brace in these coolant jackets just to keep the cylinder walls from walking. With this sleeve installed 40+psi is no problem!!!
Subi block= Made of aluminum
The mitsu's iron block is way stronger than suby's aluminum open deck design. Suby's block is very similar to a honda aluminum block. I have a fully built turbo honda crx si with a sleeved iron b18c1 gsr block. There is no way it last long(15+psi's) without iron sleeves. It can be prone to cracking the cylinder walls due to the coolant jackets and aluminum design. Its very popular for the honda crowd to install iron sleeves or at least a cylinder brace in these coolant jackets just to keep the cylinder walls from walking. With this sleeve installed 40+psi is no problem!!!
Evolving Member
Joined: Aug 2004
Posts: 430
Likes: 0
From: rancho cucamonga
EJ207 baby!!!!!!!!! oh wait, you said EJ257......oh, ok then.
EJ257. j/k
Like someone else said, its too close to call in my book. People have put ~500whp on a stock 2.5 block. I dont follow the 4G63 "that" much, but Im sure its also up there. How long will either last @ that power level, dont know.
blah blah blah, the 4G63 is better............again.
EJ257. j/k
Like someone else said, its too close to call in my book. People have put ~500whp on a stock 2.5 block. I dont follow the 4G63 "that" much, but Im sure its also up there. How long will either last @ that power level, dont know.
blah blah blah, the 4G63 is better............again.