ok well the whole cam decision has been really really hard for me since there are so many choices and companies that make good power..so ive decided to spend half my money saved up for a JUN II intake came since its pretty much the same as the JUN III except longer duration ..my question is what should i do about an exhaust cam?...i was thinking skunk 2 stage 2 or JUN III when i build my bottom end (next summer) and maybe a ctr or 98 spec itr ex cam until then? or should i just get the s2s2 or JUN III ex cam now and leave it detuned until im ready to build the block and up the compression?...i know a few people using the s2s2 cam on stock blocks and thier cars run fine..but the thing is they all have b18's and i have a b16..will it be a unreliable setup if i run a higher lift ex cam with out the high compression? or should i just buy a ctr/itr ex cam until my block is built?..but if i do it this way im pretty much wasting 250 dollors on a cam for a few months...and then have to spend 4-500 bucks on an ex cam when the time comes..what should i do?

 

If you plan on going with a bigger bottom end down the line, alot of people have really good success with S2S2/JUN3's.

 

i know alot of people have had great sucess with both cams but thats not my question ..

 

Ah, generally runner a bigger exhaust is gonna help your top end.

 

so will i be safe if i run a junIII or skunk 2 stage 2 exhaust cam until i build my block in a couple months? its a stock block b16 remember..i just wanna know if ill be safe in doing this because i dont wanna destroy my motor

 

You have to be careful to check p-v and v-v clerances since JUN cams tend to have alot of lift at TDC.

 

what is p-v and v-v clearances? and how do i check them?

 

Piston-to-Valve and Valve - to - Valve.

P-V is can be done with clay.

Valve-to-Valve is a lil tougher to do precisely.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rocket &raquo;</TD></TR><TR><TD CLASS="quote">Piston-to-Valve and Valve - to - Valve.

P-V is can be done with clay.

Valve-to-Valve is a lil tougher to do precisely.</TD></TR></TABLE>
that is good advice
thanks rocket for all the help with doing mine

 

Why not use the JUN III cam for the intake as well. I know the JUN II has more advertised duration but it is not only duration and lift that dictates how much power a cam is going to make. You also have to take into consideration ramp angle. JUN III's have a more aggresive ramp than the JUN II's do. As for what exhaust cam to use I would match it with JUN II just because of the ramp angle. You might have slower opening and closing intake valves then you will exhaust valves if you use the III on your exhaust side and the II that you have on the intake side.