[Spirosr53]

Hello guys. My r53 had 160 psi compression to all cylinders. After the newman ph2 install the compression gets down to all cylinders. Is it normal; now the compression is 125 psi

 

[NigelStap]

The cam change alone shouldn't affect compression.

 

[KeithyCoop]

Sounds like the timing is out and the valves are not closing.

 

[Maccmike]

As above. Check the timing marks.

 

[Spirosr53]

Sounds like the timing is out and the valves are not closing.

The timing is correct. I cant understand why is the compression so low.

 

[Spirosr53]

Sounds like the timing is out and the valves are not closing.

The timing is correct

 

[Spirosr53]

As above. Check the timing marks.

The timing is correct. Is there anybody with the same cam to tell as the compress from his car;

 

[Maccmike]

The cam doesnt alter compression.

 

[CarsOrBikes]

it can, a PH2 won't by much

 

[Maccmike]

I stand corrected. On a race cam you will get some overlap reducing compression.
What cam is this chap running?

 

[CarsOrBikes]

very easily - overlap

25% is a bit OTT perhaps but it changes it regardless.

 

[Spirosr53]

very easily - overlap

25% is a bit OTT perhaps but it changes it regardless.

Is it normal; will i have a problem;