Polo 9n3 Performance Tracking Thread #2

[kaanage]

If it's ok, how much was the wavetraq landed, Sean?

[sambb]

The whole diff thing is such a hard decision. I spoke to the people up in QLD that apparently Harding performance use to do their gearbox/LSD jobs. They were saying they install SQS and Gripper diffs. They said that some of the plate/clutch diffs are quite streetable although others are appalling, and that they have cars that do more track km's than I ever would that are going strong after years and years. Apparently if you keep the gearbox oil changes up to them and use the right oil then the clutches will last just fine. Biggest question of mine regarding clutch diffs is whether 1 way or 1.5way would be the go. I can't help but think that any kind of locking of the diff on deceleration in a 1.5 way ie when trail braking to the apex, is just going to make it want to understeer more. I have heard a few FWD reviews of the 1.5 way KAAZ that say this can be a real issue. So I'm thinking that 1 way (like the SQS) would be the go but I then wonder if its locking transition from no lock to full lock at the point at which I get across onto the gas could be too abrupt right when you want to be smooth, but I'm struggling to find any info from anyone who runs a 1 way plate/clutch. You can buy the SQS 1 way with "soft" or "hard" ramps - I'm waiting to hear back from them about which is most appropriate for what I do. or how either would be compared to say the 'locking' of a wavetrac.

If you're interested in a plate alternative to the wavetrac Greg, here is the link to the SQS site: SQS Racing | LSD SQS 02J/02A/02C/02S

and here is the link to the KAAZ:

https://www.mdspares.com.au/products/107/Kaaz-Limited-Slip-Differential-DBV1820

I'm waiting on them confirming if it will actually fit. they're in VIC and the price is like 1350 or something. I think I was quoted 1600 for the wavetrac.

[seangti]

If it's ok, how much was the wavetraq landed, Sean?

The diff alone was ~$1600, 9 or 11 hours labour and ~$300+ for new seals, bolts and whatever other parts to ensure it's all sweet. All up was ~$3000 and that was me pulling the box out and dropping it off.

The clutch plate diffs require a special oil in the gearbox and as Sam said, regular flushing. The wavetrac operates with standard OEM recommended oil. Be sure not to run shockproof style oil as that'll void the lifetime warranty on the diff due to the lubricant properties of shockproof. I was researching the plate diffs, but was taking too long to get a response from distributors, knew the price would be more and had the car a part... so pulled the trigger on wavetrac.

[sambb]

I'm finding that too. Whether its a UK shop when asking about Quaife ATB's or the wavetrac people here, they seem to know about the 113/114mm ring gear thing etc and are across the boxes. In comparison I can't find an SQS distributor in Oz (although they have been very good with email correspondence from Czech) and the KAAZ distributors in VIC seem to be referring all questions to Japan re fitment. If I'm to go to all the effort/$ then ideally I want a proper limited slip, but the way its shaping up its making the wavetrac look more and more likely.

[kaanage]

Eddy has the sqs in his little blue girl. He loves it but I don't think the car does much mileage on public roads.

Thanks for the pricing info Sean

There are 2 main types of plate clutch diffs. The cheap version just use springs to preload the plates and it's a straight tradeoff between traction and turn in. The proper version is usually called a Salisbury and uses ramps to control the plate loading vs torque with a flatter ramp for deceleration. The sqs is a Salisbury

[sambb]

Yeah the SQS looks like the real deal in that regard. Being a one way it may just be the one that won't induce corner entry understeer. The single biggest thing for me though is longevity. Some plate diff reports say that you have to pull them out regularly to adjust them and others say they'll last as well as a torsen. Seperating out who wrote this eg track only vs people like me is the hard bit.
I spoke to Eddy a couple of weeks ago and he did say the SQS was a massive leap compared to the torsen Peloquin and needed a full reset on how to drive it. I'd assume the plate diff would have a much higher locking percent compared to the torsens which might be why he said he had to muscle it a a lot more. From pictures Eddy did seem to like using kerbs like the Supercars on the Gold coast chicanes, so I wonder if that's where he found the only difference (reatining full drive) or if it was more than that.

[Eddy]

Hoyhoy.

I'll try to help out a bit here, first of all I use shock oil & have had no probs, that's after more than several years along with tracking.
Kerb hoping only came in after fitting the SQS, the main reason for changing from the Peloquin was the way it acted coming out of tight corners when going hard, it just kept skipping the inside wheel & I was waiting for the gearbox to let go.
There is a difference in driving which is hard to explain, when going easy on a big sweeper & ya touch the go pedal it seems to pull ya back to a straight line which feels strange, but when going hard it's all go around where ya want.
Sam with the SQS 1 way & on soft there is no abruptness @ all, it's smooth, ya wouldn't even know that it is there.
To spin the wheels on take off is a hard thing to do believe it or not, two wheels driving together make a big difference.

P.S. I have to say SORRY to Sam for misleading him recently along the line of purchasing the Little Blue Girl.
I'm now getting her getting back on the road, a couple of things have to be seen to, just too much of me in her, but I'm getting older.

[sambb]

Hey Eddy. Glad to hear that yours is the 1 way that's still available and that you are running the soft ramps cos that's what I was thinking would be the best. I've read a few things on the KAAZ 1.5 way that have put me off regarding the diff trying to drive the car straight on at corner entry because of its deceleration phase partial locking, and that they'll chatter and carry on and basically sound broken coming out of drive ways or when full lock going into a parking spots etc. Sounds like your is a bit more civilised than that. No worries regarding the car. I totally understand. I nearly had a man tear when I saw the warped rear quarters on my car after the crash and knew it'd be a write off and I'd only had it 3 years. You've put more into your car than I probably ever will, so I get it. All good.

[louis19]

Polo 9n3 Performance Tracking Thread #2

New PB by a whisker despite my 60ft being slower than my previous PB. Was trying for a 12 second pass but the conditions didn't allow for it. Had hoped the weather would've cooled down a little more but was still quite warm, plus got some rain followed by cars dropping fluids at the start lines which made for greasy conditions. Exit speeds were up though, with a few high 108MPH runs which I would like to think is from the recent ported exhaust manifold swap.

I will try again in the coming months when the weather has cooled off a little more



Sent from my iPhone using Tapatalk

[Eddy]

Hoyhoy.

Well done, dam good time for a 9N3 Pog.

[louis19]

Polo 9n3 Performance Tracking Thread #2

Hoyhoy.

Well done, dam good time for a 9N3 Pog.

Thanks Eddy. There's more in it as it stands. Just need to get the right conditions. I want to crack that 12 before my upcoming engine work.

[sambb]

Managed to find the online/public results from the hillclimb I did the other week.

25/6/17
Ringwood motorsport complex
hillclimb track A2A
type 2 class over 2 litre
60.66 sec

https://www.mgcarclub.com.au/wp-content/uploads/2017/02/2017-06-25-Hillclimb-Ringwood-R4-Track-A2A-Results.pdf

[kaanage]

Updated for Sam and Louis new results - well done, lads.
Sorry for the slow response, guys.

[sambb]

NSW State Hillclimb Championship
RD6 Tamworth Oakburn motorsport park 16/7/17
road registered non-logbooked >2500cc class

time: 37.89 sec
18th/57 overall
2nd in class

Result

Lap Times

[sambb]

NSW State Hillclimb Championship
RD7 Ringwood 6/8/17
road reg >2.5L class
state A2 track config

time: 43.05 sec PB
3rd in class
overall: 19/69

http://hillclimbnsw.com/2017-08-06%20NSW%20State%20Round%207%20Provisional%20Results%20ver%202.pdf