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Old 25-06-2019, 06:59   #1
60ftLaunch
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Arrow NON TURBO 4G63 to Turbo

Hello
I have a few questions about the 4g63 Non turbo (silver top)

How does the engine block and head differ from that of the 4g63 as fitted to the EVO ?

Is the block casting the same as the turbo version?minus the oil pickup for the turbo?
Is the cylinder head casting the same as the turbo version
Is the valve train the same as fitted to say an evo 6 ?
I can see the Valve cover is not magnesium ?
Has anyone fitted evo pistons to this non turbo block and turbocharged it ? Did you encounter any issues ?

Last edited by 60ftLaunch; 25-06-2019 at 07:02..
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Old 25-06-2019, 11:26   #2
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Originally Posted by 60ftLaunch View Post
Hello
I have a few questions about the 4g63 Non turbo (silver top)

How does the engine block and head differ from that of the 4g63 as fitted to the EVO ?

Is the block casting the same as the turbo version?minus the oil pickup for the turbo?
Is the cylinder head casting the same as the turbo version
Is the valve train the same as fitted to say an evo 6 ?
I can see the Valve cover is not magnesium ?
Has anyone fitted evo pistons to this non turbo block and turbocharged it ? Did you encounter any issues ?
Not sure on the answers, but do know it would be cheaper to stick an Evo lump in.
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Old 25-06-2019, 20:39   #3
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The non-turbo engine doesn't have oil squirters machined in the block for the pistons and the pistons themselves are different
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Old 25-06-2019, 22:02   #4
60ftLaunch
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The non-turbo engine doesn't have oil squirters machined in the block for the pistons and the pistons themselves are different
Thanks for the input
is the Cylinderhead the same in terms of design and CFM it can flow ?
does it use the same valve springs ,valves and valve train as the evo models ?
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Old 25-06-2019, 23:20   #5
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Thanks for the input
is the Cylinderhead the same in terms of design and CFM it can flow ?
does it use the same valve springs ,valves and valve train as the evo models ?
Yes same as a standard Evo head, MR models have different cams
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Old 26-06-2019, 06:07   #6
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Yes same as a standard Evo head, MR models have different cams
Don't know if it helps to clarify, but the camshafts are different in the different models of the Evo, not just the MR models.

For example, from memory the following is true:

VIII MR has slightly more aggressive exhaust cam to Evo VIII and Evo VII.

VIII 260 has milder cams unique to its engine.

IX and IX MR cams are the same, but are different to other Evo models as these engines have MIVEC (variable exhaust cam).
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Old 26-06-2019, 08:02   #7
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Wouldn't the compression ratio be different between a N/A and turbo application?
Pretty sure that the Evo 4G63T has a lower compression ratio due to forced induction and that this setup wouldn't suit a N/A application in terms of drivability, fuel consumption and efficiency?

I'd be surprised if they really were the same... even though I don't possess the actual technical specifications for either the 4G63 or 4G63T.

All the best

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Old 26-06-2019, 12:13   #8
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Yes that's why the pistons are different
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Old 26-06-2019, 13:46   #9
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Yes that's why the pistons are different
Is it *just* the pistons that are different? What about rods and/or crank?

I would expect head components to be different as well, but if somebody confirms they're exactly the same then that's good. Surprising, but good.
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Old 26-06-2019, 17:36   #10
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There the same don't forget the engine isn't anything special designed from the ground up it was made from a existing engine in the Mitsubishi range. Unfortunately I can't remember the exact years but I had a friend who worked in Mitsubishi who got me the part numbers for Evo crank and rods as well as a non turbo 4G63 and the part numbers were all the same other than the pistons. If you have a little look around online you'll see in America people do this conversion a lot that's what lead me to checking in the part numbers as I was looking to fit a Evo engine into a Rover but didn't want to pay thousands for a engine that wouldn't fit etc where as you can get on non-turbo 4G63 for a few hundred. the American boys who mostly seem to use them for drag racing say you don't need the oil squirters unless you're running high power on track and they don't seem to be having many failures. I wouldn't like to say 100-percent on the cams as I know that these were changed as time went on and I can't remember exactly what year is the cars we used for part numbers were

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Old 26-06-2019, 17:44   #11
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There the same don't forget the engine isn't anything special designed from the ground up it was made from a existing engine in the Mitsubishi range. Unfortunately I can't remember the exact years but I had a friend who worked in Mitsubishi who got me the part numbers for Evo crank and rods as well as a non turbo 4G63 and the part numbers were all the same other than the pistons. If you have a little look around online you'll see in America people do this conversion a lot that's what lead me to checking in the part numbers as I was looking to fit a Evo engine into a Rover but didn't want to pay thousands for a engine that wouldn't fit etc where as you can get on non-turbo 4G63 for a few hundred. the American boys who mostly seem to use them for drag racing say you don't need the oil squirters unless you're running high power on track and they don't seem to be having many failures. I wouldn't like to say 100-percent on the cams as I know that these were changed as time went on and I can't remember exactly what year is the cars we used for part numbers were
You sure on this, any links to show this info?
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Old 26-06-2019, 19:19   #12
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https://www.dsmtuners.com/threads/in...nt-4g63.48231/
All the info you need this guy convert 4g63 n/a to 4g63T

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Old 26-06-2019, 22:47   #13
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You sure on this, any links to show this info?
I will see if I can find the paper work with all the part numbers on by it was a few years back since my mate worked there the garage was knocked down for housing. I'm sure we used a 2004 lancer with the 2.0 16v 4G63 and my Evo for reference but I haven't used my Evo since 2009 so the paper work could be anywhere so said there was a lot of info on the US forums but be careful a lot of it is on the early engines
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