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Carsinc
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« Reply #135 on: July 03, 2017, 08:25:58 AM »
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Wait 1.4bar on a 11to1 vrt?  i'm going to try and find if you listed what turbo your runing. But 20PSI? |
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Jim_Coupe
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« Reply #136 on: July 04, 2017, 12:45:55 AM »
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Im running a GTX3582r with ceramic ball bearings, 1000cc bosch ev14 injectors and E85.. I measured the content of our E85 in Sweden and it was very accurate now in summer. In the winter the E85 is more gasoline and les alcohol. Im suprised right now that the clutch can take the load.. And yes its really fast. It takes on TTRS and RS3 with no problem.  E85 loves high compression ratio. The ignition its on the edge I think more can be done to the tune in this area on a dyno. Ihavent bothered since the car just feel awsome anyway. Fueling is spot on where i want it. (well almost.. to rich in some areas.) Its debatable if my tune is a good tune in nefmoto terms... |
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« Last Edit: July 04, 2017, 12:58:13 AM by Jim_Coupe »
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E85oholic
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Mikhail
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« Reply #137 on: July 09, 2017, 04:50:24 AM »
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Looks that the ignition retatard I had was due that, that I turned the exhaust -25 because of spool and caused a lot of residual gas left in cylinders. Turned the exhaust to -10 and no knock, also took the lambda to 0.84 (from 0.  which may affect as well. |
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Jim_Coupe
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« Reply #138 on: July 09, 2017, 06:12:34 PM »
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Wait 1.4bar on a 11to1 vrt? i'm going to try and find if you listed what turbo your runing. But 20PSI? I can just say that today was the day i blew my head gasket I was racing on the highway against an unknown Golf R. That Golf guy pulled over to se if I was Okay because he had never seen a car smoke that much in his entire life hahahaha... The engine was pushing lots of coolant through the exhaust. I migh have been boosting more than 1.4 bar.. more closer to 1.5bar. When i got home I realized how stupid i have been. I raised to much boost without retarding my ignition in that area of the table... Before i was only runing around 0.8bar.. This is the lurky thing with Ethanol.. U will never hear knock... U will only produce more and more cylinder pressure and then BANG... hehe.. I see this as a good way to learn from a fatal mistake This will only give me an excuse to rebuild the engine. It has been a very good season but now it ends. lol. Gonna put the car in the freezer for a while. But it wont end here |
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E85oholic
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Mikhail
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« Reply #139 on: July 09, 2017, 10:06:48 PM »
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Have to say that this is tough engine, metallic head gasket gives first than OEM bottom  Now you can say that had you more than 20 decrees advance at limiter? |
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Mikhail
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« Reply #140 on: July 27, 2017, 10:51:16 PM »
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What would be good enrichment for start for e85? At the moment I have 0.112 lambda up to 14 decrees Celsius and above that goes to 0.75 at 30 decrees. It starts but could be better. Here usually morning temps are about 10-15 decrees so would be nice to get it working good.
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« Last Edit: July 27, 2017, 10:55:14 PM by Mikhail »
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Mikhail
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« Reply #141 on: July 30, 2017, 11:29:10 AM »
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Seems that the engine temp sensor reads at least 4 decrees Celsius too much at 10 decrees ambient which caused the difficulty to start about those ambient temps.
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Mikhail
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« Reply #142 on: September 25, 2017, 05:26:39 AM »
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Testing the ignition retard boost up at launch.
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Mikhail
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« Reply #143 on: September 26, 2017, 11:07:10 PM »
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I'm so happy that how the car goes, that can't help my self to spam an another video. Beautiful autumn day, +8 dec celsius. Ignition advance -8 while waiting launch. Boost ~0.85. A bit wheel spin at the first gear. I think that 2.99 sec to 100km/h is possible mainly by increasing boost, because seems that now is only a few tenths shy.
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« Last Edit: September 26, 2017, 11:13:21 PM by Mikhail »
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Mikhail
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« Reply #144 on: October 03, 2017, 10:24:08 PM »
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Got the launch good that revs won't owershoot and still starts to pull immediately as the clutch grab. BUT next broplem is that the haldex can not take all the torque an look's that it slips. Someone faced (and solved) this with gen 2?? Prj?
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gt-innovation
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« Reply #145 on: October 04, 2017, 02:43:36 AM »
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What do you mean by haldex slips??? From tests i did you are good to go up to like 650nm - 700nm and never had issues with the haldex (when it is in good condition) while launching the car... Maybe something else is slipping and in your videos the launch or power is not even close to hard or as powerfull as it should be to just kill a differential or a gearbox...
On the other hand your videos are very sort and quality is low...
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Mikhail
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« Reply #146 on: October 04, 2017, 08:55:40 AM »
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Another video. Weird shaking at the first gear. At damp or wet the grip goes at once and clearly feels the rear go sideways. At dry is this shaking and the front only may go sideways (needs steering to go straight).
I found that the gen 2 is advertised to transfer 3200Nm to the rear. This means that the force between tires and ground is 10000N. This means 1000kg. If coefficient of friction is 1, means that 700kg weight rear + weight sift at launch may indeed be more or equal than 1000kg by which weight this 3200Nm is not enough to spin tires.
May also be EDL.
I can't see the ABS or the haldex with my old vag-com so don't know the haldex pressure. Or is the k-line broken?
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dragon187
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« Reply #147 on: October 04, 2017, 09:00:57 AM »
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I have seen if clutch from gearbox is slipping than the traction control lamp is flashing.
Have you trie with traction control off?
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Mikhail
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« Reply #149 on: October 06, 2017, 09:38:17 AM »
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call that a launch?
Accelerating from standstill using dsg launch utility... Found that to the haldex can change sport clutch discs. First should disable the EDL, b5 did it by wiring brake input permanently to +, what would be the best way with this? |
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