Roll Call - 996 Tiptronic Owners
#91
08-16-2010, 06:44 PM
Join Date: Nov 2009
Location: houston, TX
Posts: 1,364
Rep Power: 94 
Hey Guys,
Sorry for not posting but been on holiday and been working hard to pay for all those bills.
So as you know I had the MKB upgrade which has been perfect until about a month ago. Couple of minor clitches and MKB asked for the gearbox back to check it. So they picked it up and found that there was a leaking piston in one of the clutch packs that had caused excessive wear. They have fixed that.
However, I knew that my rear diff was screwed so since they are specialists (MKB) I asked them to do that at the same time. Unfortunately it was worse that first thought in the the Wheelset was screwed. It needs to be replaced. I do have a spare gearbox, but I don't want to use that for spares, so MKB are contacts some of their suppliers to get a new Wheelset. So I should have the gearbox back in 2-3 weeks. I am actually going on holiday again this weekend so it is not too bad.
Anyway, I also had the misfortune of witness an accident in which a woman turned directly into path of lorry. The lorry was doing 40mph and her car was flung back along the carriageway and hit the front side of my car. Lucky everyone was okay, but the car is in the body shop being repaired (at her insurers expense at least!).
As to performance figures etc, you can see what mods I have. They have been posted.
I need to get some more validated times, because last time out I had a problem with the EBC that prevented me from running good boost. That was a quick fix, but after the event.
If I get the car back for September we have another event during then. The only issue is that we know the track is around 2-3 seconds slower than other ones - I was actually getting the PSM light coming on changing from 3rd to 4th - LOL.
I ran some reasonable times that day that were validated which IIRC were
0-100mph 6.6
0-130mph 10.4
Those were done only at 1.3bar.
I think on that day with that start we ran 10.8 1/4 mile at around 136. That is two up, full load on a rubbish surface.
Anyway with the MKB, the car is very quick to shift etc. I don't have the TCU upgrade and at the moment don't plan to. I do have upgraded TC and the stall limit is around 3.5k which helps get her off the line. BTW, with the 0-100mph I had real traction issues and a slow 0-60 time of 3.6 IIRC. When I have cranked it before I have had it down to very low 3s, including 2.5sec 60-100.
So I don't regret doing the upgrade with the tip, because the thing shifts so quick and doesn't lose boost.
If you have questions let me know.
Ken
Sorry for not posting but been on holiday and been working hard to pay for all those bills.
So as you know I had the MKB upgrade which has been perfect until about a month ago. Couple of minor clitches and MKB asked for the gearbox back to check it. So they picked it up and found that there was a leaking piston in one of the clutch packs that had caused excessive wear. They have fixed that.
However, I knew that my rear diff was screwed so since they are specialists (MKB) I asked them to do that at the same time. Unfortunately it was worse that first thought in the the Wheelset was screwed. It needs to be replaced. I do have a spare gearbox, but I don't want to use that for spares, so MKB are contacts some of their suppliers to get a new Wheelset. So I should have the gearbox back in 2-3 weeks. I am actually going on holiday again this weekend so it is not too bad.
Anyway, I also had the misfortune of witness an accident in which a woman turned directly into path of lorry. The lorry was doing 40mph and her car was flung back along the carriageway and hit the front side of my car. Lucky everyone was okay, but the car is in the body shop being repaired (at her insurers expense at least!).
As to performance figures etc, you can see what mods I have. They have been posted.
I need to get some more validated times, because last time out I had a problem with the EBC that prevented me from running good boost. That was a quick fix, but after the event.
If I get the car back for September we have another event during then. The only issue is that we know the track is around 2-3 seconds slower than other ones - I was actually getting the PSM light coming on changing from 3rd to 4th - LOL.
I ran some reasonable times that day that were validated which IIRC were
0-100mph 6.6
0-130mph 10.4
Those were done only at 1.3bar.
I think on that day with that start we ran 10.8 1/4 mile at around 136. That is two up, full load on a rubbish surface.
Anyway with the MKB, the car is very quick to shift etc. I don't have the TCU upgrade and at the moment don't plan to. I do have upgraded TC and the stall limit is around 3.5k which helps get her off the line. BTW, with the 0-100mph I had real traction issues and a slow 0-60 time of 3.6 IIRC. When I have cranked it before I have had it down to very low 3s, including 2.5sec 60-100.
So I don't regret doing the upgrade with the tip, because the thing shifts so quick and doesn't lose boost.
If you have questions let me know.
Ken
So when you sent your tip in, it was already giving you trouble? If so, what type of trouble?
I am getting K24/18g installed next week and I plan to run a lot of race gas....I hope my tranny can handle it. I went with the k24/18g over the garrets because the torque is a lot more linear.
I already had to sent my tranny off to be rebuilt to spec for a leaking gasket (everyday i wish i had the TC upgraded when the tranny was out).
-Ben
#92
08-16-2010, 06:44 PM
- I think it was already posted by someone - 4k Euro plus you have to supply the tip box to be upgraded.
#95
08-17-2010, 01:26 AM
Registered User
Join Date: May 2010
Location: Scotland
Posts: 1,482
Rep Power: 97
Its for the same reason, that I am looking at MKB, I'm already getting some slip in 3rd gear when changing so I suspect the 3rd gear clutch pack is not up to it. I also feel it is just too slow to change gear.
My car was dyno'd at 550 ftlbs torque, which although is not at the limit for a Tip ,the box has done 50k miles so I suppose its expected.
Frank
My car was dyno'd at 550 ftlbs torque, which although is not at the limit for a Tip ,the box has done 50k miles so I suppose its expected.
Frank
#96
08-17-2010, 01:59 AM
Its for the same reason, that I am looking at MKB, I'm already getting some slip in 3rd gear when changing so I suspect the 3rd gear clutch pack is not up to it. I also feel it is just too slow to change gear.
My car was dyno'd at 550 ftlbs torque, which although is not at the limit for a Tip ,the box has done 50k miles so I suppose its expected.
Frank
My car was dyno'd at 550 ftlbs torque, which although is not at the limit for a Tip ,the box has done 50k miles so I suppose its expected.
Frank
does anybody knows what is the maximum torque that the tip can handle?
#97
08-17-2010, 02:14 AM
Registered User
Join Date: May 2010
Location: Scotland
Posts: 1,482
Rep Power: 97 Yes, its slips on WOT when changing gear. 3rd gear clutch pack is suspect. Its fine unless your WOT.
I had heard 600 ft/lbs was the limit, but I'm not sure. Most people say 600 Sbhp is about all the box will take safely, and I'm sure it was also 600 ft/lbs as well.
Frank
#98
08-17-2010, 02:45 PM
Thanks Ken!
So when you sent your tip in, it was already giving you trouble? If so, what type of trouble?
I am getting K24/18g installed next week and I plan to run a lot of race gas....I hope my tranny can handle it. I went with the k24/18g over the garrets because the torque is a lot more linear.
I already had to sent my tranny off to be rebuilt to spec for a leaking gasket (everyday i wish i had the TC upgraded when the tranny was out).
-Ben
So when you sent your tip in, it was already giving you trouble? If so, what type of trouble?
I am getting K24/18g installed next week and I plan to run a lot of race gas....I hope my tranny can handle it. I went with the k24/18g over the garrets because the torque is a lot more linear.
I already had to sent my tranny off to be rebuilt to spec for a leaking gasket (everyday i wish i had the TC upgraded when the tranny was out).
-Ben
- it had trouble to change gear under WOT from 2nd to 3rd and 3rd to 4th after around 10 miles
- we increased the boost to 1 bar and within 2 pulls it the gearbox was toast - i mean limp mode on the tip and then when we checked using PIWIS, every code was set off for the tip (over 20 codes including overheating of ATF etc).
So for the power, the gearbox could not handle that.
So once you get to around 550awhp, your box is useless. I suspect that it is around 525awhp that it starts to complain.
Also bear in mind that 3rd gear has the smallest clutch pack - crazy when you consider that you are probably in that gear more than most.
So I suspect that with k24/18g you are going to have issues if you run anywhere near their limits.
#99
08-17-2010, 03:13 PM
Join Date: Nov 2009
Location: houston, TX
Posts: 1,364
Rep Power: 94 So basically when we did the proto package and finished the install, which included upgraded TC only (not gearbox or TCU), we ran initially at just WG pressure.
- it had trouble to change gear under WOT from 2nd to 3rd and 3rd to 4th after around 10 miles
- we increased the boost to 1 bar and within 2 pulls it the gearbox was toast - i mean limp mode on the tip and then when we checked using PIWIS, every code was set off for the tip (over 20 codes including overheating of ATF etc).
So for the power, the gearbox could not handle that.
So once you get to around 550awhp, your box is useless. I suspect that it is around 525awhp that it starts to complain.
Also bear in mind that 3rd gear has the smallest clutch pack - crazy when you consider that you are probably in that gear more than most.
So I suspect that with k24/18g you are going to have issues if you run anywhere near their limits.
- it had trouble to change gear under WOT from 2nd to 3rd and 3rd to 4th after around 10 miles
- we increased the boost to 1 bar and within 2 pulls it the gearbox was toast - i mean limp mode on the tip and then when we checked using PIWIS, every code was set off for the tip (over 20 codes including overheating of ATF etc).
So for the power, the gearbox could not handle that.
So once you get to around 550awhp, your box is useless. I suspect that it is around 525awhp that it starts to complain.
Also bear in mind that 3rd gear has the smallest clutch pack - crazy when you consider that you are probably in that gear more than most.
So I suspect that with k24/18g you are going to have issues if you run anywhere near their limits.
I went with the 24/18g (was considering 20g, very glad I stuck with the 18g after reading your post) because even with race gas at 1.5 bar, i don't think i could get to 550whsp. Even if I assume my 18g car with 1.5 bar is putting out 700 crank hsp, a 22% power loss to the wheels gets you to ~550whsp. I have heard higher power loss % from tip owners and I doubt my car will put a full 700 crank hsp.
#100
08-17-2010, 03:16 PM
I've been saying this for a while now.
So basically when we did the proto package and finished the install, which included upgraded TC only (not gearbox or TCU), we ran initially at just WG pressure.
- it had trouble to change gear under WOT from 2nd to 3rd and 3rd to 4th after around 10 miles
- we increased the boost to 1 bar and within 2 pulls it the gearbox was toast - i mean limp mode on the tip and then when we checked using PIWIS, every code was set off for the tip (over 20 codes including overheating of ATF etc).
So for the power, the gearbox could not handle that.
So once you get to around 550awhp, your box is useless. I suspect that it is around 525awhp that it starts to complain.
Also bear in mind that 3rd gear has the smallest clutch pack - crazy when you consider that you are probably in that gear more than most.
So I suspect that with k24/18g you are going to have issues if you run anywhere near their limits.
- it had trouble to change gear under WOT from 2nd to 3rd and 3rd to 4th after around 10 miles
- we increased the boost to 1 bar and within 2 pulls it the gearbox was toast - i mean limp mode on the tip and then when we checked using PIWIS, every code was set off for the tip (over 20 codes including overheating of ATF etc).
So for the power, the gearbox could not handle that.
So once you get to around 550awhp, your box is useless. I suspect that it is around 525awhp that it starts to complain.
Also bear in mind that 3rd gear has the smallest clutch pack - crazy when you consider that you are probably in that gear more than most.
So I suspect that with k24/18g you are going to have issues if you run anywhere near their limits.
#101
08-17-2010, 03:17 PM
If someone has a spare Tip laying around, I'm looking for a core from a turbo. Slipping is fine. Also, looking for a transmission repair manual for the tip if anyone has one.
Last edited by Brad Bedell; 08-17-2010 at 03:36 PM.
#102
08-17-2010, 03:18 PM
Join Date: Nov 2009
Location: houston, TX
Posts: 1,364
Rep Power: 94 Its for the same reason, that I am looking at MKB, I'm already getting some slip in 3rd gear when changing so I suspect the 3rd gear clutch pack is not up to it. I also feel it is just too slow to change gear.
My car was dyno'd at 550 ftlbs torque, which although is not at the limit for a Tip ,the box has done 50k miles so I suppose its expected.
Frank
My car was dyno'd at 550 ftlbs torque, which although is not at the limit for a Tip ,the box has done 50k miles so I suppose its expected.
Frank
#103
08-17-2010, 03:19 PM
Join Date: Nov 2009
Location: houston, TX
Posts: 1,364
Rep Power: 94
What issues did you have with your car once the 18gs were installed? You only had them on there for a month or two right?
What boost did you run it at? When did you notice issues? 3rd gear? WOT? Any additional problems in the transmission when you used race gas and turned up the boost?
Also, I don't really understand why the 18G cause problems but not the 16G. The 16G puts out much more torque in lower RPMs that the 18g (much more linear). I thought this would be good for the tranny rather than a lot of quick torque pulls.
Thanks!
What boost did you run it at? When did you notice issues? 3rd gear? WOT? Any additional problems in the transmission when you used race gas and turned up the boost?
Also, I don't really understand why the 18G cause problems but not the 16G. The 16G puts out much more torque in lower RPMs that the 18g (much more linear). I thought this would be good for the tranny rather than a lot of quick torque pulls.
Thanks!
Last edited by bad107; 08-17-2010 at 03:24 PM.
#104
08-17-2010, 03:39 PM
Not true. Are you basing that on dyno runs? You can tune out TQ, so it is deceiving.
#105
08-17-2010, 03:48 PM
Join Date: Nov 2009
Location: houston, TX
Posts: 1,364
Rep Power: 94 The only 16G dyno i have seen is the AMS Billet 16 which shows crazy torque at very early RPMs.
Is it horsepower or torque that kills the tranny? Does anyone know the actual issue with the tranny? Is it the overheating? The 3rd gear clutch pack? Combination?
Can you explain tuning out the torque? If torque is the tranny killer, dialing that back to safe levels (trial and error), seems like a good way to go.