Integra Type R Detailed info needed

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Originally Posted by Integra_guy

dc2r I'm not sure about that statement with vtec across the rev range. Have you been in a DC5R? There is most definently an engagement point at 6k. Hell you notice it!

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Sorry, I have not been in a DC5R (but I wish I could, can someone take me for a ride? :D ). I just heard/read this information about the i-vtec somewhere. They say that the i-vtec kicks in first at around 3K then 6K?? I'm not 100% sure, but just my thoughts anyway. But some of these guys have already corrected me so it's cool. And as I said, when the i-vtec kicks in, it is not as noticeable as the DC2R. So who's gonna give me a demo? I'll give you a demo of my DC2R! :P

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Originally Posted by JayDC5R

Vtec comes on at 6000rpms in a DC5R....

From my experience, the rev limiter/cut out, comes in anywhere between 8000-8500 depending how hard your driving the car...

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I see it to in the DC5R, it looks like it goes to 8000+ rpm, but I'm told it's 7,900pm

Yes, this can be the fact for the DC2R also. The redline is at 8400, then the cutout is at 8500. But if you drive your car hard, then the momentum of the needle gets pushed further (physics) and it looks like it cuts out at 8700 or 8800. You shouldn't really be cutting out your revs, but sometimes you get into it so much that you 'accidentally' over rev and it happens.

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Originally Posted by dc2r

Yes, this can be the fact for the DC2R also. The redline is at 8400, then the cutout is at 8500. But if you drive your car hard, then the momentum of the needle gets pushed further (physics) and it looks like it cuts out at 8700 or 8800. You shouldn't really be cutting out your revs, but sometimes you get into it so much that you 'accidentally' over rev and it happens.

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That is true in the case of instrument clusters with needles driven by coil-pack and spring. Some instrument clusters are driven by stepper motors that don't have momentum swing.

I believe that DC5R and DC2R instrument cluster needles are cross-coil & spring which exhibit momentum swing if the needle accelerates through the dial fast enough. That's why although the display of DC5R fuel-cut out may sometimes display 8000 8100 or 8300, the actual engine fuel cut-out is 7,900rpm

spot-on howard and why certain DC2R's can rev to 9K 'indicated' like my previous one....

cheers

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Originally Posted by Hadean

I believe that DC5R and DC2R instrument cluster needles are coil-pack which exhibit momentum swing if the needle accelerates through the dial fast enough. That's why although the display of DC5R fuel-cut out may sometimes display 8000 8100 or 8300, the actual engine fuel cut-out is 7,900rpm

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Oh ok then, that would explain why it look like it cuts out later... :oops: :)

I've had my DC5R fuel cutout come in at 8400. Very noticable!

Redline it slowly... you'll see that i'm right.

Also, cross-coil needles are about 2 to 3 degree inaccurate. Whereas stepper-motor driven ones are about 1 degree inaccurate.

So you have momentum swing & display inaccuracies. I'm still not 100% sure whether the DC5s use cross-coils or not. Only way to find out is to find out the supplier who makes those clusters or to pull one apart to see for oneself.

Also, cross-coil is a older technology and is more expensive due to the length of time to make them compared to using stepper-motors.

So maybe the Honda cluster is in fact a stepper motor drive? I'm truly guessing here, but I still suspect it's a cross-coil cluster.

umm i think the jdm final drive is 4.79,

the audm is 4.9 i think???

I can find the exact figures on honda-tech but too busy at the lab!!!

read the honda manual to reveal all! ;)

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Originally Posted by Jnr Teggy

read the honda manual to reveal all! ;)

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Does someone mind doing this? :)