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flipper35 02-12-2021 12:42 PM

I can dump the clutch at idle now and all it does is chirp the tires so I don't know that reduced mass in the flywheel would make it much harder from a stop. Might have to slip it a bit more. I was hoping it would rev quicker for road course work in the heal and toe department. It may not be worth it, just want info before ordering parts and pulling it apart.

ted 02-13-2021 05:47 AM

Heal toe makes driving fun, I'm not missing the new car paddle shifting nanny experience.

Lightened flywheel will make the engine more responsive and less lazy when you you rev it.
With a lighter flywheel it does helps on track with the heal and toe downshifts.

A Nascar has a 5 inch clutch, my IMSA race car has a 7 inch clutch.
The engine revs up quick on a heal and toe as it has to be as the transmission has dog rings (no syncros) and downshifts are quick as there is no syncro drag as you move the shift lever.

In SCCA in the production GT classes the production corvettes are allowed to reprogram the brain to provide better throttle response.
Makes heal toe more efficient even with the stock synchro transmission.

Back in my VW days a lightened flywheel made your 100hp engine feel much more responsive.

I have a stock 3.2 with a stock flywheel.
What it does best is at idle you can engage the clutch and not stall.

Agree painful to performance drive and heal toe with a lazy revving engine.
For years I had 2 911 cars, one stock and one was modified with a light flywheel.
Both were easy to drive and had no trouble crawling up my steep driveway.

Listen to my old 3.6 with a lighter flywheel on the heal toe downshifts.
It revs quick enough sometimes I have to rev it twice on the downshift because the 915 syncros require a slower shift.
<iframe width="560" height="315" src="https://www.youtube.com/embed/N7ohJAkwng0" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

My ultimate is a dog ring box, 730 hp with the light 7 inch flywheel.
Shift lever has no resistance and the engine can keep up with the quick shifting.
Most the clutch wear happens in the pits trying to get the car to roll.
A little clutch slip and some bucking from having a first gear good to 60+mph.
<iframe width="560" height="315" src="https://www.youtube.com/embed/pPAvNUxww-A" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

In drag racing the inertia of a heavy flywheel can be helpful when you drop the clutch at the start.

GH85Carrera 02-13-2021 06:10 AM

Back in the olden days my 914 was my daily drive, and only car. After 150,000 miles and hundreds of autocrosses the clutch was shot. I let a friend talk me into the 911S copper faced pressure plate clutch and a lightened flywheel. It revved faster but idle was a challenge in day to day driving. I was not too disappointing when a spring on the pressure plate broke and I had to replace it with stock.

For my 911 with the 915 transmission I can't shift fast enough to need a lighter flywheel. Shifts are rather lazy and I don't care as I am not going for a fast lap time I just want fun. It was fun to chase down and catch a 964 at Hallett. He pulled off the tack on that lap so he would not have to let me pass.

ted 02-13-2021 06:31 AM

Sometimes production car specs are just too homogenized for the masses that drive in traffic or lack sensitivity in the left foot to properly engage the clutch.
So manufactures compromise make the flywheel heavy so almost anyone can get the car rolling with out stalling it.
I expect most car enthusiasts are more capable/skilled/experienced than what the car engineers determined to be the best combination for anyone to be able to drive.
When you take that to the track it just makes for a lazy car.
Which is fine if you don't mind waiting for a slow responding car.
A heavy flywheel on the track makes a car feel slow and heavy.

I also enjoy some videos of production cars on track with a stock steering box.
Some of the saves are impressive when you need to turn the steering wheel so much to catch the car.
A quick ratio steering box on a dedicated race car may only move a half turn to full lock.

The question is what track mods are not acceptable or not tolerable if your track car is a dual purpose street track car.
I never drive my track car in traffic so never have to suffer the daily grind of stop and go traffic in my track car.
For sure I was never on track thinking how can I reduce engine responsiveness, how can I increase the steering box ratio, and I never liked the factory front brake bias either.

So much wrong with production cars when you drive them on the track.

porsche4life 02-13-2021 07:20 AM

Quote:

Originally Posted by GH85Carrera (Post 11222103)
Richard always did things his own way and never tried to conform to what is average or what other people considered to be normal. He was not someone people forgot. He often looked like a homeless bum with a beard that was almost to his navel. He was his own man.

Missed all this yesterday. RIP Richard. He was a different guy for sure, but he was always welcoming and cracking jokes. He taught me a lot about autocross when I was just getting started.

GH85Carrera 02-14-2021 06:14 AM

Burrr.

The nucking futs weather is in full swing now. After a week of below freezing weather, today is blowing snow, and 4 degrees and -7 wind chill. The good news is when it stops falling I can use my leaf blower to clear my driveway.

I could likely pile it up and set it on fire it is such dry snow. It is supposed to snow all day, kinds stop for a while and then a second storm comes through and dumps more. We might finally get above freezing by Friday for the first time in 14 days.

We have broken all sorts of records for the coldest high temps for a day, and lowest temps for the day. If we don't get above freezing before Friday I think that will be an all time record as well. We just don't see this type of winter weather often fortunately.

We had to add water to the kio pond in the back yard yesterday. Normally I just use the sprinkler system's water well but I did not want to risk running it for the pond section. That would fill up the main trunk line and it could freeze before the the automatic drains drained the line as it is not but a foot deep. I ended up using a faucet adapter to the sink in my garage bathroom and ran a hose out the back of the garage to the pond.

GH85Carrera 02-15-2021 05:16 AM

Whooo eeeee. It is -6 this morning. That white crap stopped falling for a few hours. Right now I can't see where sidewalks are. Or the curbs to the street and there are drifts in the back yard that are 2 feet tall. THe bad news is after a day of no snow another big storm rolls through and we may get as much with it as we just got.

We keep breaking records for temps and snowfall. I never set foot outside yesterday. I may have to crank up the leaf blower, um make that snow blower to clear off the driveway drifts. That way the snow can start over with new drifts.

Porsche-poor 02-15-2021 06:00 AM

Morning all. We got about 6-8 inches of white fluffy stuff over 2 days. Some places North of here got 11 or more. Its raining now so the flooding will start soon.

GH85Carrera 02-15-2021 06:09 AM

Nice, the temperature has doubled! It went fro -6 to -3. Or did the temperature half? Hmmmm. It is supposed to have a high of 3 for the day.

Our snow is so dry it just blows around. Once the temperature has quadrupled we may go outside and move the drifts around from in front of the garage doors. It is 41 degrees in the garage over by the windows on the north side of the garage.

Porsche-poor 02-15-2021 06:16 AM

I don't think we have any drifts. The road out front is clear but I'm to lazy to shovel out the drive way when I don't really have anyplace to go. I didn't find any snow on the walk to work to day.

GH85Carrera 02-15-2021 06:20 AM

We don't plan on going anywhere, but a 12 inch drift is easier to blow or sweep away than a 24 inch drift after the next storm. We will need to leave at some point and it will be a week or more before that pile of snow is gone. We get out of the freezer on Friday. My beer supply will be low but then!

Porsche-poor 02-15-2021 06:26 AM

true. 12 is much lighter than 24. With our rain it should be gone in a day or two.

GH85Carrera 02-15-2021 06:41 AM

http://forums.pelicanparts.com/uploa...1613403686.jpg

Porsche-poor 02-15-2021 06:45 AM

Beware the ones that can survive the winter white and fly in sub zero temps.

flipper35 02-15-2021 09:39 AM

Quote:

Originally Posted by ted (Post 11222993)
Sometimes production car specs are just too homogenized for the masses that drive in traffic or lack sensitivity in the left foot to properly engage the clutch.
So manufactures compromise make the flywheel heavy so almost anyone can get the car rolling with out stalling it.
I expect most car enthusiasts are more capable/skilled/experienced than what the car engineers determined to be the best combination for anyone to be able to drive.
When you take that to the track it just makes for a lazy car.
Which is fine if you don't mind waiting for a slow responding car.
A heavy flywheel on the track makes a car feel slow and heavy.

I also enjoy some videos of production cars on track with a stock steering box.
Some of the saves are impressive when you need to turn the steering wheel so much to catch the car.
A quick ratio steering box on a dedicated race car may only move a half turn to full lock.

The question is what track mods are not acceptable or not tolerable if your track car is a dual purpose street track car.
I never drive my track car in traffic so never have to suffer the daily grind of stop and go traffic in my track car.
For sure I was never on track thinking how can I reduce engine responsiveness, how can I increase the steering box ratio, and I never liked the factory front brake bias either.

So much wrong with production cars when you drive them on the track.

The a833 is quick to upshift if you are strong enough and I am sure it will handle the quicker response. Since it is a weekend toy I don't know if it would be a bother. It also idles at 1200 rpm per the engine builder to make sure it keeps enough oil moving in the valve train, no rollers.

It used to run 62mph in first with the 2.73 rear end, but now with the 3.55 it is much better in town going slow. It used to go almost 18mph at idle.

flipper35 02-15-2021 09:42 AM

We will be above 0* again by the end of the week. You lightweights with your puny 12 and 24 inch drifts. Let me know when they get above the discharge chutes on the snow blower. :)

Porsche-poor 02-15-2021 10:11 AM

If they get that deep I'm moving.

GH85Carrera 02-15-2021 10:48 AM

I do not own, and never want to own a snow blower. I like to live in a part of the country where if I go to a big box store and ask where are the snow blowers they reply "the what???"

There are no snow blowers at our big box stores or at any store around here. We often go a few years at a time with no snow at all. This is just beyond unusual.

flipper35 02-15-2021 11:14 AM

Quote:

Originally Posted by Porsche-poor (Post 11225709)
If they get that deep I'm moving.

Pffft. With your commute it wouldn't slow you down and the rain you get, you probably need an ark two days after the snow.

Porsche-poor 02-15-2021 12:41 PM

I need hip waders to take out the garbage.


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