like the title says can any one tell me the best compression for skunk2 pro1 camshaft thanks

 

Set your compression to fuel you use and not the cams. Dan

 

Ageed.

 

ok I agree also but doesnt skunk2 pro1 need about 12.0:1 compression

 

NO. Will they make more power @13-1 VS 11-1? Yes, but so will every other cam including stock.

 

so what would be a better cam if you had 11.3:1 compression

 

What is the displacement and how high do you want to rev it?

 

Boy do I get a lot of milage out of this one?


I would say limit it to 11.5 and you should be ok. Don't use ctr pistons!!! As far dynamic vs static compression way too much importance is made of that here is a I wrote about this in another thread.

The more you push cr to the edge the more fuel you will need suppress detonation. In my opinion if you need to back off timing or run a fat A/F you have too much cr. You will get better fuel mileage and the same performance with a cr that allows you to run a factory A/F and timing that is why Honda set there cr where they did. Here is another bit of my rantings that might help you about a prevalent myth.

Myth's get started with some truth and cams vs compression is an old debate. When you increase the duration you will lose cranking compression and a compression test proves this. It is the later intake valve closure and not overlap that causes this. So the conventional wisdom is to increase the cr to compensate for the loss. But it is not that simple, none of us drive our cars at starter cranking speeds and what is happening at high rpm is much different than what is happening at idle speeds. When an engine comes onto the power band of a cam (peak volumetric efficiency point) the late intake closure bleed off stops happening because the velocity in the intake runners becomes high enough to over come the piston pushing anything out, it is called ram effect. This is the main reason big cams will make more power. In the days of no vtec adding cr would help a lot in motors with big cams when the engine was below the cams power band of the cams but with vtec there is no need for this. So what's my point, the point is the cr should be 90% weighted toward what fuel is being used and not the cams. Dan

 

I have pro1 cams with compression of 12.3:1 on my daily driver but the reason I brout this up is cause a guy was trying to use these cams on a car that only has about 11.3:1 but I think he should get something else with that compression because for the money he can get something that will have better out put for that compression

 

I was being sarcastic in the other thread about cam selection. A friend of mine ran pro 1 in a basic gsr setup with itr pistons. 200/140 hp and torque tuned on a dynapack with nice mid and top end.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by existanzcivicb20 &raquo;</TD></TR><TR><TD CLASS="quote">I have pro1 cams with compression of 12.3:1 on my daily driver but the reason I brout this up is cause a guy was trying to use these cams on a car that only has about 11.3:1 but I think he should get something else with that compression because for the money he can get something that will have better out put for that compression </TD></TR></TABLE> So, what cam do you think would be better for that compression? I guess Pro3's on 11.5-1 would be out of the question.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dan Ruddock &raquo;</TD></TR><TR><TD CLASS="quote">Boy do I get a lot of milage out of this one?
</TD></TR></TABLE>

If it means anything, I personally have seen that explanation about 10 times in the past few weeks.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by D-Rob &raquo;</TD></TR><TR><TD CLASS="quote">

If it means anything, I personally have seen that explanation about 10 times in the past few weeks. </TD></TR></TABLE>

Yeah really, you should cut and paste in your notes so you can use it as a canned response for this endless thread topic.

 

my lsvtec is aroud 11.3 to 11.4 compression (stock b18b block, jdm itr pistons), car runs great with the pro1 cams, made 209 whp on the dyno. car is daily driven, idle is lumpy but consistent at 850 rpms, only tuned for wot, still waiting for a street tune.