Compression Ratio
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Originally Posted by Bibbs,Oct 30 2009, 04:46 AM
JDM wasn't OBD II compliant.
Was gasket and pistons to make the .7 diff.
If you want to compare pistons, take one out and I've 4 in my bookcase from a JDM.
Makes a LOT of diff, esp when you put 9+ psi through the engine. Not much diff in Horsepower, but a load in pre-detonation.
Was gasket and pistons to make the .7 diff.
If you want to compare pistons, take one out and I've 4 in my bookcase from a JDM.
Makes a LOT of diff, esp when you put 9+ psi through the engine. Not much diff in Horsepower, but a load in pre-detonation.
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From: Jersey C.I
EU models are mapped for 95-97 RON fuel so I doubt putting in a higher octane will net what a Jap 100RON mapped car will get on 100RON fuel.
As for 99.99% of wikipedia being bull, it's probably the most accurate (and up to date) place you can get info from for a hell of a lot of information. I would rely on it more than a paper printed encyclopaedia that is edited and proofed by a much smaller team than the prying eyes of the world
As for 99.99% of wikipedia being bull, it's probably the most accurate (and up to date) place you can get info from for a hell of a lot of information. I would rely on it more than a paper printed encyclopaedia that is edited and proofed by a much smaller team than the prying eyes of the world
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Originally Posted by Sin_Chase,Oct 30 2009, 05:09 AM
As for 99.99% of wikipedia being bull, it's probably the most accurate (and up to date) place you can get info from for a hell of a lot of information. I would rely on it more than a paper printed encyclopaedia that is edited and proofed by a much smaller team than the prying eyes of the world
The reason is because any average joe can edit the information and it's a highly indirect source of info
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Originally Posted by Sin_Chase,Oct 30 2009, 05:09 AM
EU models are mapped for 95-97 RON fuel so I doubt putting in a higher octane will net what a Jap 100RON mapped car will get on 100RON fuel.
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Originally Posted by Bibbs,Oct 30 2009, 04:51 AM
Both.
And I'd not bother.
Get a turbo.
And I'd not bother.
Get a turbo.
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From: Sussex
Originally Posted by Owen_1987,Oct 30 2009, 01:18 PM
because I want to build a car that you have to pay close attention to detail (N/A) and I like precision and fine tolerances. Not just more power = slap a turbo on
try building an S2000 turbo and not worrying about tolerances and fine detail
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From: Far far away...
One small correction/addition.
If you change a headgasket with a new one you have to machine/drop the cover in order to clear it and make the gasket sit properly. That machining alone usually drops 0.2-0.3. That + the drop from the gasket itself (you said 0.3 for the Spoon one, altho i do read its 0.2 here ) and that gives you a sum of 0.4 - 0.5 points. Maybe the pistons give the other 0.2-0.3, dont know about that really.
I am not sure about the 0.7 for the JDM version BUT i do know from first hand that a JDM car is a LOT faster than a Euro Spec.
We have a member with a JDM swap and there is really no comparison.
We raced from any kind of gear and he pulled hard (and i mean hard) from the start. (That day he was with his intake lid off
)
I have read that the mapping is also different and , as already stated above, that is partly because of the better gas they are running there. 100RON is not the highest for Japanese Petrol Stations.
The only thing i have "raced" against that reminded me the way the JDM engine pulled is a full 1st Stage S2000 BUT with a lowered V-tec entrance point.
It really amazes me that some say that its the same.
Do you guys say that from experience or what the theory should be? Just very curious about this, dont wanna start any flames here. I ask in good manner.
Kostas
If you change a headgasket with a new one you have to machine/drop the cover in order to clear it and make the gasket sit properly. That machining alone usually drops 0.2-0.3. That + the drop from the gasket itself (you said 0.3 for the Spoon one, altho i do read its 0.2 here ) and that gives you a sum of 0.4 - 0.5 points. Maybe the pistons give the other 0.2-0.3, dont know about that really.
I am not sure about the 0.7 for the JDM version BUT i do know from first hand that a JDM car is a LOT faster than a Euro Spec.
We have a member with a JDM swap and there is really no comparison.
We raced from any kind of gear and he pulled hard (and i mean hard) from the start. (That day he was with his intake lid off
)I have read that the mapping is also different and , as already stated above, that is partly because of the better gas they are running there. 100RON is not the highest for Japanese Petrol Stations.
The only thing i have "raced" against that reminded me the way the JDM engine pulled is a full 1st Stage S2000 BUT with a lowered V-tec entrance point.
It really amazes me that some say that its the same.
Do you guys say that from experience or what the theory should be? Just very curious about this, dont wanna start any flames here. I ask in good manner.
Kostas
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I've never heard of the head having to be machined before a new headgasket is put on?
I got my info about the spoon head gasket from: http://www.tokyo-express.co.uk/spoon/racin..._gasket.php.htm so not sure if it is 0.3 or 0.2 now, no luck in finding out on Spoon site
I got my info about the spoon head gasket from: http://www.tokyo-express.co.uk/spoon/racin..._gasket.php.htm so not sure if it is 0.3 or 0.2 now, no luck in finding out on Spoon site