Donington 2012 - UK trackday
05-12-2012, 01:56 PM
#61
Nordschleife Master
Thread Starter
Good stuff John 
7TH July - 964s @ Donington:
1. Steve
2. Grant
3. Pesty
4. Alex
5. Andrew
6. James T
7. Wagonface
8. Paul
9. Steve C
10. Leslie
11. Christopher
12. Frank
13. John (oldtimer)
14. Kevin (yellow 964RS)
Friday stop over at Premier Inn, East Midlands Airport:
1. Boxsey - booked
2. Bigunit - booked
3. JamesT
4. Cheeksyboy (joining for beers)
5. Freedman (joining for beers)
6. Liam - booked
7. Oldtimer - booked
7TH July - 964s @ Donington:
1. Steve
2. Grant
3. Pesty
4. Alex
5. Andrew
6. James T
7. Wagonface
8. Paul
9. Steve C
10. Leslie
11. Christopher
12. Frank
13. John (oldtimer)
14. Kevin (yellow 964RS)
Friday stop over at Premier Inn, East Midlands Airport:
1. Boxsey - booked
2. Bigunit - booked
3. JamesT
4. Cheeksyboy (joining for beers)
5. Freedman (joining for beers)
6. Liam - booked
7. Oldtimer - booked
05-30-2012, 08:21 AM
#62
Instructor
Join Date: Jan 2009
Location: Esher, UK
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Steve, are Donington strict about noise? I haven't tracked my 964T before so dont know how loud it is (it has B&B headers and a G pipe). I used an iphone app to do a static test (3/4 revs) and it was lower than the 98dB, but I'm worried that the iphone probably isn't accurate. And it pops when you come off the throttle, and the pops are louder than when you are driving along.
I have a final silencer in the shed, but don't really want to pay for it to be fitted and then removed unless I have to - bumps up the cost of the trackday a bit!
In your experience, do 964's with G pipes fail the noise test?
I have a final silencer in the shed, but don't really want to pay for it to be fitted and then removed unless I have to - bumps up the cost of the trackday a bit!
In your experience, do 964's with G pipes fail the noise test?
05-30-2012, 09:01 AM
#63
Nordschleife Master
Thread Starter
Steve, are Donington strict about noise? I haven't tracked my 964T before so dont know how loud it is (it has B&B headers and a G pipe). I used an iphone app to do a static test (3/4 revs) and it was lower than the 98dB, but I'm worried that the iphone probably isn't accurate. And it pops when you come off the throttle, and the pops are louder than when you are driving along.
I have a final silencer in the shed, but don't really want to pay for it to be fitted and then removed unless I have to - bumps up the cost of the trackday a bit!
In your experience, do 964's with G pipes fail the noise test?
I have a final silencer in the shed, but don't really want to pay for it to be fitted and then removed unless I have to - bumps up the cost of the trackday a bit!
In your experience, do 964's with G pipes fail the noise test?
In general 911s are quite good for driveby and poor at static tests (because of the engine being at the back). A 964 with only one part of the exhaust bypassed should have no problems at Donny.
The best advice I can give is to always shift up before the red line (particularly in the morning session when they're most keen on finding the noisy cars). Also, short shift up as soon as you come out of the chicane the leads on to the start/finish straight. If you don't max out the revs, you won't bother the noise meters.
05-31-2012, 10:43 AM
#65
Burning Brakes
Hi Josh. Yes they are strict(ish) but they don't do a static test. It's a driveby noise meter. This trips at 98 db which is about equivalent to a 105 db static test.
In general 911s are quite good for driveby and poor at static tests (because of the engine being at the back). A 964 with only one part of the exhaust bypassed should have no problems at Donny.
The best advice I can give is to always shift up before the red line (particularly in the morning session when they're most keen on finding the noisy cars). Also, short shift up as soon as you come out of the chicane the leads on to the start/finish straight. If you don't max out the revs, you won't bother the noise meters.
In general 911s are quite good for driveby and poor at static tests (because of the engine being at the back). A 964 with only one part of the exhaust bypassed should have no problems at Donny.
The best advice I can give is to always shift up before the red line (particularly in the morning session when they're most keen on finding the noisy cars). Also, short shift up as soon as you come out of the chicane the leads on to the start/finish straight. If you don't max out the revs, you won't bother the noise meters.
Turbo should be quieter, unless you've modded the exhaust.
05-31-2012, 11:50 AM
#66
Nordschleife Master
Thread Starter
I can't stress enough to anyone that wants to do trackdays to keep their exhaust as standard as possible....otherwise you'll be sitting on the sidelines. Mine regularly tests at 100 db static and have no problems at tracks.
05-31-2012, 01:03 PM
#67
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I could nurse it onto a 98db day when engine hot and with clutch depressed and easing slowly up to 4500 rpm. Otherwise it would typically make 100db which became 101db if I forgot clutch , had cold engine , or blipped to 4600.
I now run a 964C2 stripped out for trackdays with decat , primary , secondary , no undershield , unmolested airbox and it gives same noise results as above . Its plenty loud enough for a road car , plus I can get onto just about all circuits - which its its raison d'etre anyway
05-31-2012, 01:31 PM
#68
Burning Brakes
Yes, they give you a second chance with the static but most usually fail the static second chance because it's supposed to only allow up 100 db. Sounds like you were lucky!
I can't stress enough to anyone that wants to do trackdays to keep their exhaust as standard as possible....otherwise you'll be sitting on the sidelines. Mine regularly tests at 100 db static and have no problems at tracks.
I can't stress enough to anyone that wants to do trackdays to keep their exhaust as standard as possible....otherwise you'll be sitting on the sidelines. Mine regularly tests at 100 db static and have no problems at tracks.
As above , for 9 years I ran a 964RS which was just for trackdays , it came with standard 964 exhaust system , cat , primary , secondary , full undershield , unmolested airbox ...exactly as it left the factory.
I could nurse it onto a 98db day when engine hot and with clutch depressed and easing slowly up to 4500 rpm. Otherwise it would typically make 100db which became 101db if I forgot clutch , had cold engine , or blipped to 4600.
I now run a 964C2 stripped out for trackdays with decat , primary , secondary , no undershield , unmolested airbox and it gives same noise results as above . Its plenty loud enough for a road car , plus I can get onto just about all circuits - which its its raison d'etre anyway
I could nurse it onto a 98db day when engine hot and with clutch depressed and easing slowly up to 4500 rpm. Otherwise it would typically make 100db which became 101db if I forgot clutch , had cold engine , or blipped to 4600.
I now run a 964C2 stripped out for trackdays with decat , primary , secondary , no undershield , unmolested airbox and it gives same noise results as above . Its plenty loud enough for a road car , plus I can get onto just about all circuits - which its its raison d'etre anyway
06-01-2012, 08:43 AM
#69
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Thanks for the comments guys, but I think I am more confused now. I have a 964T with B&B headers and a G pipe.
It sounds like this might be too much, because it's non standard. Anyone know somewhere in Surrey to get noise levels tested?
It sounds like this might be too much, because it's non standard. Anyone know somewhere in Surrey to get noise levels tested?
06-01-2012, 09:26 AM
#70
Nordschleife Master
Thread Starter
Check the motorsport vision website for a trackday at Brands Hatch and pop along for a noise test. They won't charge you while a track day is going on. If the static test comes out less than 105 db you should be fine for the 98 db driveby at Donington.
06-02-2012, 07:36 AM
#73
06-11-2012, 05:03 AM
#74
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Unfortunately, it looks as though I may have to duck out of this as I am mulling over potentially selling my car. PM me if anyone is interested in taking my place.
06-11-2012, 02:08 PM
#75
Selling, how come?
+1 The car won't be done by then.
7TH July - 964s @ Donington:
1. Steve
2. Grant
3. Pesty
4. Alex
5. Andrew
6. James T
7. Wagonface
8. Paul
9. Steve C
10. Leslie
11. Christopher
12. Frank
13. John (oldtimer)
14. Kevin (yellow 964RS)
Spare tickets - PM
1. JamesT
2. P964fp
Friday stop over at Premier Inn, East Midlands Airport:
1. Boxsey - booked
2. Bigunit - booked
3. JamesT
4. Cheeksyboy (joining for beers)
5. Freedman (joining for beers)
6. Liam - booked
7. Oldtimer - booked
+1 The car won't be done by then.
7TH July - 964s @ Donington:
1. Steve
2. Grant
3. Pesty
4. Alex
5. Andrew
6. James T
7. Wagonface
8. Paul
9. Steve C
10. Leslie
11. Christopher
12. Frank
13. John (oldtimer)
14. Kevin (yellow 964RS)
Spare tickets - PM
1. JamesT
2. P964fp
Friday stop over at Premier Inn, East Midlands Airport:
1. Boxsey - booked
2. Bigunit - booked
3. JamesT
4. Cheeksyboy (joining for beers)
5. Freedman (joining for beers)
6. Liam - booked
7. Oldtimer - booked
