Intake And Exhaust Cam Advanced 1 Tooth And Results?

[CEF11E]

Hey All,

Just a really quick one. with an RB25 head, am i likely to suffer interference with both intake and exhaust cams set 1 tooth advanced? this would mean both cams are advanced approx 7 degrees.

I am thinking, VCT will advance the inlet cam 20 deg + 7.5 for the extra tooth to 27.5 deg is a lot and I don't have a profile for the cam so just wanted to check with someone that knows.

I am not interested in performance aspects as the car only needs to be driven to perform some other diagnostics in its current state.

[kjb_r33]

Hey All,

Just a really quick one. with an RB25 head, am i likely to suffer interference with both intake and exhaust cams set 1 tooth advanced? this would mean both cams are advanced approx 7 degrees.

I am thinking, VCT will advance the inlet cam 20 deg + 7.5 for the extra tooth to 27.5 deg is a lot and I don't have a profile for the cam so just wanted to check with someone that knows.

I am not interested in performance aspects as the car only needs to be driven to perform some other diagnostics in its current state.

Adjusting cam gears 7 degrees is actually moving the cam 14 degrees (2:1 ratio between cam and crank) . When specs are given for valve openings , closing and duration its always crankshaft degrees, not camshaft degrees. Id be very wary as the inlet valves would be opening 34 degrees BTDC.

[T04GTR]

yes. if you want a loss of power its a good mod.