RS2 Cambelt

[rxl]

The cam timing is of only with camshaft of rs2 and the cam gear.. If only the pump is from rs2 you don't have to change any timing marks

Gesendet von meinem GT-I9505 mit Tapatalk

[A80Avant]

Minimum order is 75 belts so it's stalled just now.

So do the kevlar ones seem a better idea then?

[rxl]

Do you run your car?

Gesendet von meinem GT-I9505 mit Tapatalk

[A80Avant]

Do you run your car?

Gesendet von meinem GT-I9505 mit Tapatalk

Are you referring to me?

Sent from my SM-P550 using Tapatalk

[rxl]

Are you referring to me?

Sent from my SM-P550 using Tapatalk

So the rs2 belt is not required for the rs2.

Gesendet von meinem GT-I9505 mit Tapatalk

[A80Avant]

I have all rs2 equipment though, cam gear, pump,cams adu. If I use 151 tooth belt where would the marks have to go?

Sent from my SM-P550 using Tapatalk

[rxl]

I have all rs2 equipment though, cam gear, pump,cams adu. If I use 151 tooth belt where would the marks have to go?

Sent from my SM-P550 using Tapatalk

1/2 off alighment now.. camshaft sprocket is responsible for it..

[Rusty]

Marks will not move as the length of belt from crank, over water pump and to cam sprocket is fixed.

The 1/2 tooth error explains why the hall sender window was moved IMO.

[UrS4boy]

The 1/2 tooth error explains why the hall sender window was moved IMO.

I think the RS2 ADU hall sender window was moved because Porsche retarded the intake cam setting 10 degrees while needing to maintain the original ignition timing.

AAN, ABY, 3B_ Opens 3° ATDC, closes 25° ABDC, duration 202°, lift 8,3mm
ADU__________Opens 13° ATDC, closes 35° ABDC, duration 202°, lift 8,3mm?

REFERENCE: http://forums.quattroworld.com/s4s6/msgs/87524.phtml

Comparison of AAN/ABY 034109105 cam sprocket window location (left) and ADU 034109105B cam sprocket window (right) (Line is drawn from the timing mark through the center of the sprocket to the other side):



10 degrees is 0.027 of 360 degrees. 0.027 of 52 teeth is 1.444 teeth. This might explain the "half" tooth.

[A80Avant]

Im getting a headache about now. I think I'll just pay the extra 20€ and get the adu belt! Haha

[newsh]

As long as you can get the belt tensioned correctly you can use either belt. The number of teeth cannot and will not in any way affect the cam timing.

[AndyP]

As long as you can get the belt tensioned correctly you can use either belt. The number of teeth cannot and will not in any way affect the cam timing.

I thought this too, can't get my head around the change in cam timing.

I'm pretty sure I've used all 3 belts on my stroker, I just extended the slots on the 3B water pump so they'd tension up OK

[newsh]

Yeah, it's the number of teeth between the crank sprocket and the cam sprocket on the side opposite the tensioner that sets the timing. It would be a pretty stupid design if cam timing was affected by belt tension..

[K Simmonds]

As long as you can get the belt tensioned correctly you can use either belt. The number of teeth cannot and will not in any way affect the cam timing.

This...

[Error404]

As said the smaller diameter RS2 water pump pulley does shorten the distance between the sprockets by the 1/2 tooth that is well documented
The belt itself is irrelevant