John McM

Star Wars was relatively late for me. I identify more with Thumderbirds, because one machine in the garage/hanger is never enough!

BTW my work colleagues wouldn't rest until the C4 had a name. They chose 'Herman the German'. Works well with Herminator and Herminated so I'll adopt that.

Still working how to get Herman there on Monday with his turbo stablemate. I want to record a personal best in the 964 at Pukekohe.

Macca

Herminator. I like it...

O2GO

Oh, I assumed they were in the sprints in their race cars? Not the tour.

Was that you I passed going the other way on Campbell Road and waved to this morning. I waved because it was a nice air cooled Porsche then thought "that looked like it may have been Paul". :-)

I wish I had paid more attention in Star Wars.... Not that familiar with all the characters. I'd like to be a Jedi though. Suggestions.

Macca, I agree. Sometime my humour attempts are taken a bit literally.

Budgeting and planning for SITT this weekend. Need to take a deep breath. Possible sump extension, rotors, pads, tyres, service, accommodation, food, gas. It's going to be fun though.

John McM

I have given up on budgeting as I'm not going to deny an expenditure needed to make it a good experience. This is a bucket list trip!

Btw what's the sump extension for?

mjg

There's a strictly policed 95 dBa dynamic/boundary limit at Pukekohe, so if you have been/are fine there hopefully you won't have trouble anywhere else, since it's a MSNZ "standard".

The problem the guys in the UK typically run in to are with static limits, as they are measured from a fixed point at the rear of the car and 911s are penalized by having the engine at the rear so the SPL meter picks up all of the engine noise on top of the exhaust. Rather than a fixed 4000rpm, I think it's usually half way to the RPM limit. Tricks for reducing noise during static tests including holding the clutch in, making sure all of the accessory fans are off, and raising the revs slowly so you don't hit a peak over your target. Even stock standard GT3s of all years fail those tests on a regular basis. With the later valved GT3 exhausts you can fit a cap to stop the valve opening and significantly reduce volume, but you shorten the life of the side mufflers and lose a bit of power doing that, so although some run on track with that setup when necessary it's better to only use it for passing static tests if possible.

I've got an SPL meter, I'll bring it along to Pukekohe if anyone's interested in measuring their system statically or during a fly-by.

Macca

Great info Matt. I'm glad the Levels test is not static then. 95db on boundary is very generous (assuming fair distance from track to boundary). No worries for the GT3 or the 993 then...false alarm

PHG

Would be Paul, but decided to go away on the boat again for Feb. An expensive way to keep the km's down on the 996TT

mjg

I can't remember how far the boundary is, it's somewhere along the back straight (probably right where you'd be near top speed) and probably translates to 104-106 dBa on the track. The NZV8s are pretty loud and they get past fine, so hopefully we'll all be okay! 65 dbA at Highlands is very low (that's voice volume from 1m) but given your on-track number the boundary must be quite a distance away.

Paul, do you have any idea on the timing for the dyno tuning?

O2GO

good on you John. It's not so much "limiting the budget", more figuring out how much dosh I need.

986.x, 987.1 (and possibly also 997.1, pre DFI) have sumps and can suffer oil starvation with track tyres, tweaked suspension and racing pads etc on the track where excess Gs keep too much oil in the heads and the oil pump may suck air deep in corners etc. Then excellerating out can starve the engine of oil temporarily.

The sump extension + baffles is a precautionary spend ($630+ labour) to prevent oil starvation on the track. George had the problem in his 986.1S and solved it with this. Peter Meredith now has one.

The best/safest solution is an Accusump - emulates a dry sump reservior system. But it's about $3k.

Some overseas track day enthusiasts recommend it. I've struggled to get good intormation but Macca helped me on RL by pushing it too.

I doubt I can get enough G forces in my setup to create the problem but are wanting to mitigate tyhe chance of having PM's problem with his Cayman.

Here's the thread I created to get info about it.
https://rennlist.com/forums/987-981-...r-de-days.html

It's the M96 and M97 engines that can have the problem.

I certainly don't pretend to be an expert on this.

KiwiSean

Yup, I'm competing and planning to recon the weekend before the event, probably early on the Saturday morning.

Cheers.

Macca

Matt G. Thats good data. I met Tony Quinn at the 2012 Targa. He didn't come across to as someone who would buy a race track and then play PC to the noise police. Given how quickly sound decreases with distance and looking at the track map below I would say the boundaries are a long way away form the track and suspect you could run 115db on that track! Thats great news. he probably has bought all the neighbouring properties by now too!

kiwi 911

They are amazing cars, but you need to know how to drive them as they only have 4 gears and turbo lag. They also 'feel' heavy.

The maintenance bills are twice a standard 911.

People who have owned them have love/hate relationships.

They are grand tourers (like a 928), and not really a track car due to their weight and managing 4 gears/boost.

If you where to buy one, a 964 generation car is the way to go as they have 5 gears.


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kiwi 911

No - I need to get my A into G and answer some of his questions.


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Macca

Very well summarised Paul....

Did I catch that right? You are trying to remote live map a 1995 Motronics 2.10.01 control unit on a dyno? I assume you are using a GIAC chip or similar to plug and play into the ECU between tunes?

I assume you are hoping for results in line with Mr Schofields in the UK?

If you want to have a discussion on this at any time mate just skype me a call. I have a particular opinion on this that you may want to consider before you spend your hard earned wedge...Sean knows what Im talking about here and Ive done my homework on this one...of course it depends on your expectations....

Steve Wong is probably an easier and faster alternative...

Macca

WTF John? You were 14 in 1977. Unless you were an early maturer knee deep in it by then already (maybe we do have our wooky after all?) then what else could a pre pubescent boy be doing rather than collecting Star Wars bubble gum cars and trying to construct a light sabre?

Am I alone?, wierd? or just a bogan? (maybe all three)