Dynos for JDM Cars?
08-24-2006, 01:53 PM
#1
Registered User
Thread Starter
Dynos for JDM Cars?
Hey guys,
Does anyone have any dyno plots for Japanese market S2000s? I'm curious about the HP differences. There's already quite a bit of speculation in other threads so I'm looking for acutal dyno plots. Anyone?
I'm kicking around the idea of buying a used motor from an importer and having it rebuilt (if necessary), balanced and blueprinted. I figure with enough money I should be able to make my car as fast as the ones that Honda gives to the automotive press.
-Stephen
Does anyone have any dyno plots for Japanese market S2000s? I'm curious about the HP differences. There's already quite a bit of speculation in other threads so I'm looking for acutal dyno plots. Anyone?
I'm kicking around the idea of buying a used motor from an importer and having it rebuilt (if necessary), balanced and blueprinted. I figure with enough money I should be able to make my car as fast as the ones that Honda gives to the automotive press.
-Stephen
08-25-2006, 10:15 AM
#3
Member
Yup, much scratching!
Stephen, JDM cars are quoted withhigher figures because of ECU differences which take advantage of the higher Jap fuel rating, and the engine has a higher CR. There's very simple ways to mirror this in a US / Euro spec S2000.
For that reason importing a JDM lump is a complete waste.
MB
Stephen, JDM cars are quoted withhigher figures because of ECU differences which take advantage of the higher Jap fuel rating, and the engine has a higher CR. There's very simple ways to mirror this in a US / Euro spec S2000.
For that reason importing a JDM lump is a complete waste.
MB
08-25-2006, 10:38 AM
#4
Registered User
Originally Posted by Dark Blue Mark,Aug 25 2006, 11:15 AM
Yup, much scratching!
Stephen, JDM cars are quoted withhigher figures because of ECU differences which take advantage of the higher Jap fuel rating, and the engine has a higher CR. There's very simple ways to mirror this in a US / Euro spec S2000.
For that reason importing a JDM lump is a complete waste.
MB
Stephen, JDM cars are quoted withhigher figures because of ECU differences which take advantage of the higher Jap fuel rating, and the engine has a higher CR. There's very simple ways to mirror this in a US / Euro spec S2000.
For that reason importing a JDM lump is a complete waste.
MB
08-25-2006, 12:33 PM
#5
Registered User
Thread Starter
Hey guys,
Thanks for the replies. Everything I've read so far on the engine differences have been speculation. Some say that the motors have different rods and pistons, others say they simply have a different head gasket which produces the increased compression. I'm interested in finding out how much power these motors are actually putting down because a number of the used S2K motors being sold here are imported from salvage yards in Japan. It would be an interesting project to find out how much power you can get out of a meticulously built Japanese spec motor.
I do understand that the JDM ECU's are tuned differently to complement the engine specs and regional fuel quality. I don't think our fuel differences would be that big of a concern. The ECU's should retard timing if any knocking occurs. As a matter of fact, my wife likes to fill up my S2000 with 87 Octane fuel when she uses it. It drives me nuts but the car never complains even in the 100 degree heat we have here in Texas.
-Stephen
Thanks for the replies. Everything I've read so far on the engine differences have been speculation. Some say that the motors have different rods and pistons, others say they simply have a different head gasket which produces the increased compression. I'm interested in finding out how much power these motors are actually putting down because a number of the used S2K motors being sold here are imported from salvage yards in Japan. It would be an interesting project to find out how much power you can get out of a meticulously built Japanese spec motor.
I do understand that the JDM ECU's are tuned differently to complement the engine specs and regional fuel quality. I don't think our fuel differences would be that big of a concern. The ECU's should retard timing if any knocking occurs. As a matter of fact, my wife likes to fill up my S2000 with 87 Octane fuel when she uses it. It drives me nuts but the car never complains even in the 100 degree heat we have here in Texas.
-Stephen
stop letting her get gas. Fill it up before she takes it out. 
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