VW - AUDI 1.8T Cylinderhead - Rotationtest 7500 RPM
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Uploaded by JAZZBOE1966 on Aug 26, 2010
GT-Power makes a Rotation - Test for the Original 1,8T Camshaft and Valves
on the Thyssen Cylinder Head - Dynometer in Germany.
All Heads must stand this test before they goes in Production.
Lambo, Porsche, Audi R8 and allthe other high tech cars.
GTP was the first Tuner which have done this Test, to make sure when comes the critical point in making setups.
Chiper and many Tuners just set the Rpm Limiter wherever they belive, but realy nobody knows.
Our Customers are not our Testdrivers and this test have to be done, to make sure how high can we run our Power Setups with Turbokits installed !!
This High Tec Rotation - Test shows with lasermessurement exactly the valve shattering from the hydraulic valve followers, the valve clearance and how much Rpm you can run save the Engine without the valve hit the pistons under Stress....
7250 was just safe......
7500 with hot oilsfoam of older lubriation, the head get under stress and the "hydraulic pushers" start to to jitter. ( it is also a classical engine fold by the Audi RS 4 and S4 )
They dosent work exactly anymore and we have to lower the RPM in the safer Range.
We do this Test with a complete new head, new valve guids and new liters.
Just imagine, what can happend if you drive your engine with over 80.000 km and older valve guids or older lifters. Ergo you should change them a.s.a.p.
Sorry for the bad video quality.
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Uploader Comments (JAZZBOE1966)
All Comments (6)
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Stock head? Was 7500 max rev limit ????
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7500 at the camshaft? that's 15000 at the crank.
7 months ago 2
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@badslabber Did you read the description? This had nothing to do coolant, eggs or radiators. It has to do with testing for valve float and at what RPM threshold you reach valve float using a hydraulic lifter set up on this particular head.
Your average hydraulic lifter valve train is not meant for 9,000-10,500 rpms. This particular head was designed by engineers to rev to 6800. Many tuners are pushing the stock head to 7500-8000 rpms on components that can't take the stress.
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whats this meant to prove ,that it can run at 7500rpm with no coolants,big fucking deal ,ford/cosworth were making engines in 1970 that revved to 10500rpm ,9000rpm in road rally trim with an egg in the radiator:(
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hmm... with no oil?
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Hi there,
please check the Oilline (0,47 Sec ) which goes in the head.
For a head test like this, you need for sure oilpressure and the right oil.
JAZZBOE1966 1 year ago