Hi
I have audi S2 3B model and I recently bought cams of RS2, what do I gain by mounting them in my audi??
I have audi S2 3B model and I recently bought cams of RS2, what do I gain by mounting them in my audi??
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one thing i know about the rs2 exhaust cam is that only the camgear is diffrent. inlter i dont know
One thing i've learned we are way behind the Scandinavians! -
aha, inlet is same, sorry!
One thing i've learned we are way behind the Scandinavians!Comment
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Cams
It means then that the cams of RS2 are not good for my car? And if the model of 7A give to install in my audi?Comment
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install a 7a cam on the exhaust and rs2 inlet.
One thing i've learned we are way behind the Scandinavians!Comment
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The Perfectionist
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Audi Class Concours winner Stoner Park 2014, ADI Concours D'Elegance Class Winner 2008, Runner up 2014. Winner, S2Forum Show'n'Shine Billing 2006 & 2008.
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Profile of inlet cams on 3B-ABY-RS2 is identical.
The 3B does indeed have gear at the end to drive the distributor.
The RS2 uses an odd camwheel pulley that skews the timing versus the 3B and ABY.Paul Nugent
Webmaster http://S2central.net
Administrator http://S2forum.com
1994 S2 Coupe ABY - aka Project Lazarus
2001 A6 allroad 2.5TDi - family tank
2003 S4 Avant 4.2 V8 - daily burble
Purveyor of HomeFries and Exclusive agent for Samco hose kits (S2/RS2)
There are only 10 kinds of people that understand binary - those that do, and those that don't
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The true reason for the odd cam wheel on the RS2 ADU engine is the fact the RS2's water pump pulley is SMALLER in diameter which in turn uses less teeth on the pulley. The same fact goes for the crank pulley...an odd tooth amount. The smaller pulley on the water pump causes the obvious....faster rotation of the impeller, which moves more cooling water throughout the system. Kinda cool.
That is another reason the pump on the RS2 engine is SO damn expensive, it will only work with the matching cam and crank pulleys.Comment
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Hate to disagree but having had all the parts in my hand the only difference between the ABY and RS2 cam wheel is the position of the pickup on the disc in the centre of the wheel. Other than that they are identical.The true reason for the odd cam wheel on the RS2 ADU engine is the fact the RS2's water pump pulley is SMALLER in diameter which in turn uses less teeth on the pulley. The same fact goes for the crank pulley...an odd tooth amount. The smaller pulley on the water pump causes the obvious....faster rotation of the impeller, which moves more cooling water throughout the system. Kinda cool.
That is another reason the pump on the RS2 engine is SO damn expensive, it will only work with the matching cam and crank pulleys.
The RS2 pump can be used on an ABY with the RS2 cambelt without using the RS2 cam wheel. People such as Mark Halligan have proved this on their engines.
The reverse is also true, you can stick an RS2 wheel on the ABY and the ECU sees a change in ignition in vag-com.Comment
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Wow.
I have been told the wrong. I stand corrected. Thanks Jamo!!Comment
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Waterpump pulley has nothing to do with the cam timing. The wheel diameter difference will not influence the roll distance that the timing belt makes, because the tooth size remains the same for both water pump models. So crank/cam timing will not be influenced by mixing ABY and ADU parts in that sense! However, the ADU camwheel hall window has a different timing and puts the cam timing also advanced someone else mentioned.The true reason for the odd cam wheel on the RS2 ADU engine is the fact the RS2's water pump pulley is SMALLER in diameter which in turn uses less teeth on the pulley. The same fact goes for the crank pulley...an odd tooth amount. The smaller pulley on the water pump causes the obvious....faster rotation of the impeller, which moves more cooling water throughout the system. Kinda cool.
That is another reason the pump on the RS2 engine is SO damn expensive, it will only work with the matching cam and crank pulleys.Last edited by Bram; 5 September 2008, 19:10.Comment
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Cams
Hi
But I still don´t know what the advantage of putting the 2 cams of audi 7A? And of course if it is possible to mount the 2, because as the RS2 not give, that will give the audi 7A?Comment
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Carlos.
On the look out for less bits for my s2 saloon project. Now supporting myself by shooting for my food. www.airgunforum.co.ukComment
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Well the family album lists the ABY and RS2 inlet cams as the same part number - 034 109 021 AN, 3B is a different letter.Cheers'en, AndyC
1994 ABY Coupe - Projekt AlpinweissComment
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