186 replies to this topic

[jules_s]

The front page on this thread seems to make windows 7 ask for a 116.de user/password.... Locks all IE tabs/windows until you re-boot; which isn't ideal when you have a ton of tabs open

[cs_]

Sorry for that, would like to change that but have no rights to edit. My website blog is htaccess protected for some reasons and old links to this site will ask for login. So for I have no edit rights for my old postings only the admin could change this.

[jules_s]

No worries I hadn't seen your thread since you started it, hence i clicked on page 1 It seems to work if you click the later pages so I guess people reading this thread now will now know not to go back earlier

[cs_]

I'll be interested to see the results, especially to see the torque curve.

First results from yesterday: 284 kW / 387 HP with 496 Nm, 400 Nm at 3.000, peaking up fast to almost 500 and holding that level for quite a while. Power curve is very nice straight line up, just like some kind of a very big N/A. It hasn't been the final setup, so there may be some variations after that. Final results with diagram follow in about two weeks.

I am really looking forward driving this car for the first time. The power gain of the new engine over my old one seems dramatic. I think I will be very lucky having the Racelogic TC on board.

[VXT Tim]

Great result Carsten Can't wait to see some videos

[KurtVerbose]

284 kW / 387 HP with 496 Nm, 400 Nm at 3.000, peaking up fast to almost 500 and holding that level for quite a while. Power curve is very nice straight line up, just like some kind of a very big N/A.

That's brilliant. I would love that - darn those Swiss MOT inspectors.

I think I will be very lucky having the Racelogic TC on board.

Yes.

[KurtVerbose]

By the way, that's quite a drive from Berlin to Frankfurt.

[cs_]

Yes, but that's not so bad for me, I'm used to it. If the engine needs a really good hands on Uwe Regelin / VX-Performance is the man! Usually I put the VX on my trailer the evening before, then sleep til 3 o'clock, get behind the wheel around 4 with two coffees to go. Driving within the early hours before dawn is a very nice thing to do. Almost no other cars around, just letting it go. Love that. This time got into a severe traffic jam on the way back home which was rather annoying. So the day lasted some 24 hours with 11 hours of driving. Anyway, it pays off to work with Uwe Regelin. He's a very good man, when it comes to setting up engines.
VX on the trailer, ready to go to Giessen.
Looking for leakage of oil, the Klasen engine poses some problems with oil leaks, darn!
Uwe Regelin on the dyno.
The secret piece of paper Uwe put into his wallet just before the dyno runs. He showed me his estimate at the end of the day. Not very far off reality.

Edited by cs_, 25 March 2012 - 09:46 AM.

[cs_]

And here's a short video of one of the later dyno runs, reaching some 280kW. And afterwards another earlier run were we were looking for a strange sharp stall at 6.000 rpm (and only there!), measuring the fuel pressure. You can hear the power drop around 6.000, if you listen carefully. In the end the failure were badly fixed spark plugs. But til we got to know this took some time. And nerves.

[cs_]

The news, some bitter, some nice: The engine built by Klasen leaked oil since first kilometer driven. The leak is located at the radial shaft seal of the exhaust camshaft. Examination showed that the cylinder head has been mechanically damaged in the seal face and someone tried to fix it with file and sandpaper. The oil leaks from the discharge pipe of the bearing cap to the shaft seal and then between the seal and the cylinder head to the outside. The timing belt took some oil of course, too. So Klasen decided to exchange the cylinder head after seeing the pictures of the head damage. The head will be exchanged at VX-Performance in Giessen rather than at Oberhausen at Klasens workspace because the car stands in Giessen right now for set-up on the dyno. It will take some few weeks until my first test drive impressions. But the upside is, Uwe Regelin (VX-Performance) did a first setup and the resulting power settled at a value I almost didn't dare to dream of. Here is the diagram (purple) together with my old setups from the last 6 years.
I think driving this will be an adventure. And the Racelogic TC will be an even closer friend of mine in the future than it has been last season.

Edited by cs_, 03 April 2012 - 04:23 AM.

[KurtVerbose]

400bhp! What's more impressive is a really progressive power curve that's eventually flat for 1500rpm, and serious torque from 3000rpm. You seem to have it all, power and control. Shame about the oil leak. Seems it'll get sorted out soon though.

[cs_]

Not quite 400... 382HP or 387PS actually. But numbers in this range are not so important anymore, it comes down to how the engine reacts to the throttle. And traction control really matters! We have one other VX in the german community for some weeks now developing almost the same power from a heavily modified Z22SE engine, Turbo conversion. The owner did some first test drives this week. He says the car is undrivable. He cannot press the pedal hard without losing the rear end of the car, upt to fourth gear! OK, he's not so experienced, not so into trackday driving like other drivers, but he knows his car. Or better "he has known". He has to learn to know it again now. That's what I have to do from around the end of april by myself. At least I have the "emergency parachute" TC. Wouldn't go without. Think I've created a bad-a...-rocket.

[KurtVerbose]

I'd be very interested to hear what yours is like to drive. From the look of the torque curve it should be good.

[cs_]

I wonder what you think about this photo:
These are my cylinder bores after only 1.000 miles of running the engine in softly and about 15 dyno runs. Shoud I be concerned or not? Expert opinions / knowledge highly appreciated.

Edited by cs_, 15 April 2012 - 05:27 PM.

[Bargi]

I wonder what you think about this photo:



These are my cylinder bores after only 1.000 miles of running the engine in softly and about 15 dyno runs. Shoud I be concerned or not? Expert opinions / knowledge highly appreciated.

Are those black patches reflections or actualy on each cylinder wall? (On mob)

[vocky]

bore glaze, most likely caused by the heavy load the dyno puts on the engine

What is bore glazing?
Bore glazing is a condition that usually occurs during the first critical hours/miles of an engine's life. If an oil of too higher quality is used and the engine is not subjected to the correct loading (light loading is particularly bad), the honing marks become filled, making the bores smooth. With nothing to retain the oil in the bore, it will begin to disappear down the exhaust pipe. Symptoms tend to be high oil consumption, smoking and poor compression. It is possible to cure by adding a glaze-busting additive to the fuel. If this fails, re-honing may be required.

Edited by vocky, 16 April 2012 - 12:49 PM.

[techieboy]

bore glaze, most likely caused by the heavy load the dyno puts on the engine

What is bore glazing?
Bore glazing is a condition that usually occurs during the first critical hours/miles of an engine's life. If an oil of too higher quality is used and the engine is not subjected to the correct loading (light loading is particularly bad), the honing marks become filled, making the bores smooth. With nothing to retain the oil in the bore, it will begin to disappear down the exhaust pipe. Symptoms tend to be high oil consumption, smoking and poor compression. It is possible to cure by adding a glaze-busting additive to the fuel. If this fails, re-honing may be required.

Brings back some bad memories.

[cs_]

It's no glazing! The honing is worn out. Maybe the long stroke engine is not capable of the high torque of the turbo. And or rpms higher than 6.000. Klasen refused refund so we put the new head on and I will drive the engine for whatever length of time it will last. And build another engine (this time a 2-liter) in the meantime. Final engine setup is tomorrow, but it will probably stick between 380 and 390PS (~285kW). Note: Nev wrote me a PM asking me how we got 388PS out of a Z22SE. But this is NO Z22SE N/A block, it is a special N/A block Klasen found that is based on the Z20LET engine. Forged steel. Drop-in-compatible, only a bit higher than the 2-liter...

[cs_]

Yesterday was showdown. Uwe Regelin (VX-Performance) in Giessen had fixed the Klasen-engine and made the final dyno runs, setting up the software. It came out that the old damaged cylinder head delivered by Klasen had another issue which is gone now with the new head: the strange power drop at 6.000 revs is gone. It was gone from the first dyno run with the unaltered software where it could be seen before. So there might be another undiscovered mechanical problem with the damaged head that is now gone. Here are the results of the final setup:

[KurtVerbose]

That's excellent. Have you had chance to drive it?