Clutch Slipped WTF?
09-25-2004, 01:07 PM
#21
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With the existing MY04 I never have problems staying in VTEC...if fact often times I'm significantly above VTEC engagement because of the slipping. With the MY00-03 slave valve I would expect the clutch to grip sooner and my RPM point when I shift 1-2 to be lower, I don't know for certain if this will drop below 6000RPMS, I haven't installed to new valve yet.
09-25-2004, 01:10 PM
#22
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Originally Posted by CrazyPhuD,Sep 25 2004, 04:07 PM
With the existing MY04 I never have problems staying in VTEC...if fact often times I'm significantly above VTEC engagement because of the slipping. With the MY00-03 slave valve I would expect the clutch to grip sooner and my RPM point when I shift 1-2 to be lower, I don't know for certain if this will drop below 6000RPMS, I haven't installed to new valve yet.
09-25-2004, 01:14 PM
#23
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Originally Posted by TunedS2000,Sep 25 2004, 02:06 PM
Really? If I shift hard I am around 6,000 to 6,200... I was wondering with the valve being removed if the car would still stay in VTEC when shifting from 1st to 2nd. let me know if I need to clear it up a bit more. Thanks
Now with the new slave valve I would expect it to grip sooner and my RPM where second engages to be sooner.
If your shift 1-2 drops you down to 6000-6200 that's within the normal range. If you look at the gearing I believe that 8200 in first is equivalent speed to 5900 in second.
09-25-2004, 02:04 PM
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Originally Posted by RACER,Sep 25 2004, 02:48 PM
According to the Reverend's gear calculator:
MY04
8,200 rpm in 1st gear is 40.7 mph.
2nd gear at 40.7 mph is 5350 rpm
MY04
8,200 rpm in 1st gear is 40.7 mph.
2nd gear at 40.7 mph is 5350 rpm
09-25-2004, 03:24 PM
#26
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Originally Posted by CrazyPhuD,Sep 25 2004, 03:04 PM
Sorry that wrong....you're not using the right values.....it's around 5800-5900, you have to use the MY04 numbers not the MY00-03 maxed at 8200
1st gear 3.133
2nd gear 2.045
3rd gear 1.481
4th gear 1.161
5th gear 0.942
6th gear 0.763
Reverse: 2.800
Primary Gear Reduction 1.208
Final Drive Ratio 4.1
I forgot to change the primary gear reduction from 1.16 to 1.208. I also used 245/45/17 instead of 245/40/17
After changing the primary gear reduction number and the tire size, this is what I came up with.
8,200 rpm in first gear is 37.7 mph.
2nd gear @ 37.7 mph is 5350 rpm.
The only thing that really changed with the differen't gear reduction and tire size is the speed of 37.7 mph in 1st gear from 40.7 mph. The decrease in rpm when shifting into second from 8,200 rpm @ 37.7 remains the same.
Sorry, these are the right values.
09-25-2004, 11:13 PM
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I'm getting my clutch done next week. Delay valve + track days = dead clutch. I'll let you guys know if I can still stay in VTEC on the 1-2 shift. I'm of the belief that 1 of 2 things are happening, or both. The 04 might allow a slight overrev in first gear to keep it in VTEC (the only people who say they can't keep it in vtec on the 1-2 shift are shifting slowly or have never driven an 04). Either that or the delay valve allows slippage enough to stay in VTEC.
Unfortunately, I am starting to think the answer is the latter.
stupid clutch.
Unfortunately, I am starting to think the answer is the latter.
stupid clutch.
09-26-2004, 01:12 AM
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Originally Posted by SoDakS2K,Sep 25 2004, 08:04 AM
Well, in theory what you are doing sound like it would be beneficial. Yo uare allowing the engine speed to lower thus allowing the clutch speed to match the engine speed. But that's not the way I drive, nor is it the way most people drive clutch that I know. I rev match as much as possible. Before I knew how to rev match, I would clutch in, shift from one gear to another and clutch out, with as little pause as possible. That is how most people drive clutch that I know.
I'm not saying what you are doing is wrong, nor what I am doing is right...
I'm not saying what you are doing is wrong, nor what I am doing is right...
09-26-2004, 03:36 AM
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Originally Posted by RACER,Sep 25 2004, 04:24 PM
These are the numbers that I put into the Rev's gear calculator.
1st gear 3.133
2nd gear 2.045
3rd gear 1.481
4th gear 1.161
5th gear 0.942
6th gear 0.763
Reverse: 2.800
Primary Gear Reduction 1.208
Final Drive Ratio 4.1
I forgot to change the primary gear reduction from 1.16 to 1.208. I also used 245/45/17 instead of 245/40/17
After changing the primary gear reduction number and the tire size, this is what I came up with.
8,200 rpm in first gear is 37.7 mph.
2nd gear @ 37.7 mph is 5350 rpm.
The only thing that really changed with the differen't gear reduction and tire size is the speed of 37.7 mph in 1st gear from 40.7 mph. The decrease in rpm when shifting into second from 8,200 rpm @ 37.7 remains the same.
Sorry, these are the right values.
1st gear 3.133
2nd gear 2.045
3rd gear 1.481
4th gear 1.161
5th gear 0.942
6th gear 0.763
Reverse: 2.800
Primary Gear Reduction 1.208
Final Drive Ratio 4.1
I forgot to change the primary gear reduction from 1.16 to 1.208. I also used 245/45/17 instead of 245/40/17
After changing the primary gear reduction number and the tire size, this is what I came up with.
8,200 rpm in first gear is 37.7 mph.
2nd gear @ 37.7 mph is 5350 rpm.
The only thing that really changed with the differen't gear reduction and tire size is the speed of 37.7 mph in 1st gear from 40.7 mph. The decrease in rpm when shifting into second from 8,200 rpm @ 37.7 remains the same.
Sorry, these are the right values.