993 flywheel replacement
Discussion
After months and months of having a thud noise when lifting off the loud pedal and being told it was nothing but old age, I dropped into a well known Indy this weekend and they have just informed me that my duel mass flyway is causing the thumb as its worn. To be fair the car has done 120K miles.
Before I tell them to go ahead and install a new one, I keep reading (especially on 964s) guys replacing the standard flywheel with an RS one.
So my questions is, would this be something I should discuss with my Indy to install on the 993?
Basically I'm after the pros and cons of fitting one of these compared to the standard one and if it's really worth it.
Many thanks in advance.
Before I tell them to go ahead and install a new one, I keep reading (especially on 964s) guys replacing the standard flywheel with an RS one.
So my questions is, would this be something I should discuss with my Indy to install on the 993?
Basically I'm after the pros and cons of fitting one of these compared to the standard one and if it's really worth it.
Many thanks in advance.
I had this done on my 993 a number of years ago, and I would recommend it, but you need to be aware that it can cause stalling issues on some 993s, and these can persist regardless of how well mapped the car is.
For clarity, on mine at least, the problem only arose when doing a leisurely down-shift, at low speeds, where you wouldn't ordinarily be rev matching (ie at very low road speeds, preparing to stop for a junction etc). Its easy enough to drive around once you know about it. The other time you have to think about it is when moving off from a standstill - again its something you get used to, but it just requires a bit more awareness and concentration than the standard unit.
As I understand it, on some 993s, its not something that can necessarily be sorted with a remap - again using my example, my car was given a live remap by Wayne Schofield, who seems to be widely regarded as one of the best in the business, and it was still a characteristic of the reampped car.
I certainly wouldn't let it stop you getting it done.
The benefits of getting it done, as mentioned are better throttle response in 1st and 2nd gear (so better acceleration from low speed) and zippier rev matching if you like that sort of thing.
I also think (and this is very subjective) that it gives the car more character (the additional noises at low speed and in neutral, and the need for greater concentration as mentioned above).
For clarity, on mine at least, the problem only arose when doing a leisurely down-shift, at low speeds, where you wouldn't ordinarily be rev matching (ie at very low road speeds, preparing to stop for a junction etc). Its easy enough to drive around once you know about it. The other time you have to think about it is when moving off from a standstill - again its something you get used to, but it just requires a bit more awareness and concentration than the standard unit.
As I understand it, on some 993s, its not something that can necessarily be sorted with a remap - again using my example, my car was given a live remap by Wayne Schofield, who seems to be widely regarded as one of the best in the business, and it was still a characteristic of the reampped car.
I certainly wouldn't let it stop you getting it done.
The benefits of getting it done, as mentioned are better throttle response in 1st and 2nd gear (so better acceleration from low speed) and zippier rev matching if you like that sort of thing.
I also think (and this is very subjective) that it gives the car more character (the additional noises at low speed and in neutral, and the need for greater concentration as mentioned above).
So, there possibly are stalling issues, I'm assuming because its lighter the engive revs more freely and acceleration is quicker. The noise within the cabin is louder, so fine for me but possibly annoying for when my speed limiter is sat beside me. Might need more parts to install, and the cost is more expensive.
Stalling issue would be a bit annoying
Quicker take off would be fab
The extra noise within the cabin I would be ok with, the wife on the long rare occasion I can get her to sit in it would not.
Extra expense of part is a problem (for some bizzare reason I thought it would be cheaper).
AS I'm pretty damn happy with the car as she is, I'm wondering if it worth deviating from standard setup. I do really like the idea that the engive will rev easier/quicker though. Very sportscar like.
As you're not taking out soundproofing there won't be a noticeable noise increase inside from the car....apart from you taking it to the red-line more often.
If you wind the window down you'll hear the clatter from the gearbox when stopped and sitting in neutral. This will disappear as soon as you press down the clutch.
Stalling on mine (964) tends to be only when pulling up, slowly, to junctions during the first 5 minutes of driving. After that it's fine.
If you wind the window down you'll hear the clatter from the gearbox when stopped and sitting in neutral. This will disappear as soon as you press down the clutch.
Stalling on mine (964) tends to be only when pulling up, slowly, to junctions during the first 5 minutes of driving. After that it's fine.
Some more RS/LWT discussion here: http://www.911uk.com/viewtopic.php?t=72145&sta...
Chris993C4 said:
Some more RS/LWT discussion here: http://www.911uk.com/viewtopic.php?t=72145&sta...
Thanks for that, makes a good read.Bump.
Still haven't yet done this.
Been offered a virtually brand new RS clutch .... I was assuming I could use a standard clutch with a LWF, hadn't thought of the RS clutch at all.
Worth it, or more a pain than using the standard one?
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