evo 8 USDM vs JDM head flow / design
Feb 12, 2012, 06:48 AM
#31
I have an USDM 8 head, and a JDM 7 Head.. As far as I can tell they both look the same. That says nothing really useful about the interior structure of the heads, but I honestly doubt they would produce two different castings on a limited production automobile, at least the first year or two of USDM evo production.
The JDM Evo 8.5 MR was the first Evo to get Mivec, so that might be the only JDM head that might have been different.
The JDM Evo 8.5 MR was the first Evo to get Mivec, so that might be the only JDM head that might have been different.
Feb 12, 2012, 05:44 PM
#35
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I have an USDM 8 head, and a JDM 7 Head.. As far as I can tell they both look the same. That says nothing really useful about the interior structure of the heads, but I honestly doubt they would produce two different castings on a limited production automobile, at least the first year or two of USDM evo production.
The JDM Evo 8.5 MR was the first Evo to get Mivec, so that might be the only JDM head that might have been different.
The JDM Evo 8.5 MR was the first Evo to get Mivec, so that might be the only JDM head that might have been different.
6 friends have them I have driven over 10 none have mivec .
Mivec was on the 9
Feb 13, 2012, 08:55 AM
#36
Evolved Member
I have an USDM 8 head, and a JDM 7 Head.. As far as I can tell they both look the same. That says nothing really useful about the interior structure of the heads, but I honestly doubt they would produce two different castings on a limited production automobile, at least the first year or two of USDM evo production.
The JDM Evo 8.5 MR was the first Evo to get Mivec, so that might be the only JDM head that might have been different.
The JDM Evo 8.5 MR was the first Evo to get Mivec, so that might be the only JDM head that might have been different.
Feb 13, 2012, 09:30 AM
#38
AJ
you see the trouble you are causing!
tscomp,
I have absolutely no definitive answers for you.
If my friend (one of your newest most annoying customers) caused this, we get that cancer causing gasoline from South America here not the EPA friendly 93 "****" you get in the states . While it could very well be revised coolant passages in the head making the combustion chamber less knock prone it could be that we just get "great" 93 here?
The latter is wishful thinking on my part no doubt lol
you see the trouble you are causing!
tscomp,
I have absolutely no definitive answers for you.
If my friend (one of your newest most annoying customers) caused this, we get that cancer causing gasoline from South America here not the EPA friendly 93 "****" you get in the states . While it could very well be revised coolant passages in the head making the combustion chamber less knock prone it could be that we just get "great" 93 here?
The latter is wishful thinking on my part no doubt lol
Next time I go logging I could come pick you up and we go Cost U Less?
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