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IMPACT OF POWER MODIFICATIONS
#21

I have seen the pause between shifts recommended for other cars as well. There is a difference between shifting too slowly after the pause vs positive in positive out after the pause. The mistake some people make is the very slow shift after the pause. If you pause and then shift positively after the synchros have caught up or down the feel will be a nice meshing and a racheting click. If you gradually put the car in gear after a pause, you can sometimes feel the gears trying to mesh but not quite getting there, resulting in a "worn synchro feeling" that is not a pleasant shift. The faster you shift the harder it is for the synchros to do their job, and like both Bobs say, the quicker you will be visiting the tranny repair facility to unload some of your hard earned cash.
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#22

yup - gear speed matching is a hard learned skill for many drivers - i still can't seem to teach my other half how to do it - she just doesn't have the left foot sensitivity and timing needed



but then, that's why they came up with the DMF idea in the first place - it makes it easier and smoother in regular driving - the tradeoff is that performance driving is limited more - when BMW did this 20 years ago with the E30, it was met with a lot of criticism by the performance drivers - to this day, the single mass cars are more desireable to the racers, for that very reason
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#23

It sounds very much like your car has a different flywheel from the stock one. I have no difficulty with rough shifting when I pause between shifts. My engine RPM does not drop rapidly between shifts either. Good luck, bob blackwell.
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#24

Interesting (if fairly off topic) discussion. I have no trouble matching revs with this car, especially with the wonderful aftermarket pedals and short shift kit the previous owner installed. Heel-and-toe downshifts are very smooth and easy to execute. I'm just surprised at how fast the revs drop on upshifts. But I'd be shocked if it has an aluminum flywheel, since the previous owner said it was bone stock when he got it, and he didn't install one, though he did a lot of very desirable things to it, as you can see by my signature.



Leonard, good input about the timing of the pause relative to the shift. I'll try it out in a little bit, as I need to run an errand soon. But as fast as the revs drop, particularly on the 1-2 shift, I don't see how I'll have time for any kind of a pause.



Flash, I'll try to give you a call soon. Been very busy lately.
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#25

nice to have talked to you again



i had forgotten that your car came from chris



also glad we had the common point of reference of the 325 - definitely sounds like a stock flywheel, and that you've figured out what to do in shifting technique to keep things happy



if you ever get out here, come take a spin in my car - then you'll get to see how fast they can really drop - definitely have to say on top of things
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#26

Cloud9..68,

What pedals do you have installed on your car and why do you like them? Can you tell us the feel on the 968?



Thanks,



Leonard
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#27

Leonard,



I'm afraid I don't know exactly what type they are, other than that they are made by Sparco. The previous owner, the owner of Speed-6 Performance, installed them. I went to Speed-6.com, and while he does have pedals listed in the index, there's nothing shown at the link. You might want to try calling Chris at (512) 619-7222, and hopefully he'll remember what type they are. I'd go to the garage and take a look, but I've spent all day working on tiling one of my bathrooms so my back is killing me <img src="/forum/images/smilies/968/sad.gif" class="smilie" alt="" /> . I'll take a look tomorrow, though



Anyway, what I love about the pedals is that they are perfectly placed for heel-and-toe (more accurately described as ball-of-the-foot/side-of-the-foot) downshifting. I drove one other 968 before buying mine, and found the stock pedals to be very awkwardly placed, so the Sparco's are a HUGE improvement.
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#28

[quote name='flash' date='Jan 5 2006, 07:33 PM']nice to have talked to you again



i had forgotten that your car came from chris



also glad we had the common point of reference of the 325 - definitely sounds like a stock flywheel, and that you've figured out what to do in shifting technique to keep things happy



if you ever get out here, come take a spin in my car - then you'll get to see how fast they can really drop - definitely have to say on top of things

[right][post="14224"]<{POST_SNAPBACK}>[/post][/right][/quote]



Yes, it was good to talk to you too. I'd love to take you up on your offer to drive your car if I'm ever in the LA area.



I guess the way the engine behaves during shifts is a matter of perception. The revs definitely drop faster than in a BMW 325, though I'm sure they drop significantly faster in an aluminum flywheel-equipped 968. In any event, it didn't take long to adapt my driving style to the particular characteristics of this car, so all's well.
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#29

Thanks cloud9...68, I have seen the Sparco pedals they look like a nice set.



Leonard
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#30

Leonard,



I found the receipt for my Sparco pedals. They are part No. SPA 03787BRI. Hope they are still available.
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#31

[quote name='Cloud9...68' date='Jan 7 2006, 08:56 AM']Leonard,



I found the receipt for my Sparco pedals.  They are part No. SPA 03787BRI.  Hope they are still available.

[right][post="14319"]<{POST_SNAPBACK}>[/post][/right][/quote]



SPARCO Pedals - seem to be available still >>

http://store.clubrsx.com/merchant.mv?Scree...de=SPA-03787BRI
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#32

Thanks for the information cloud...968 and paulw. After reading this post, well some of it, I installed a set of the RUF pedals (I already had) into the 930. I was hesitant but after reading the good reviews I tried them. I have driven other cars with aluminum pedals and they had always seemed slick, espicially when wet. However the rubber dots do make a difference. I like them and now might add them to the 968 as well.

Thanks,

Leonard
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#33

[quote name='Etnier' date='Jan 3 2006, 03:41 PM'][quote name='flash']the modifications, and how they improved 0-60 times, are listed as follows, in order of my percieved effect, largest first:



flywheel (close to .5 sec on this alone)

weight reduction

lsd

racer x chip

intake mod

larger tires, lighter wheels, and new suspension to match

power pulleys

adjustable fuel pressure regulator

ngk iridium plugs[/quote]



It's worth bearing in mind that the chip and intake mod are very easy to accomplish: my guess is that if you combined them into one item it would move up that list several places. In my case I chipped the car and was really impressed with the performance gain. The airbox mod followed (I was already on K&N filtering) and another substanial boost came with that.

[right][post="14082"]<{POST_SNAPBACK}>[/post][/right]

[/quote]
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