can someone give me a few pointers on camshafts.

 

wasn't going to bother with cams for my rebuild but one of our master techs paid me a visit today and was chatting about the new engine I've decided to uprate them,

 

the ones i want are JWT 400+ ones,

 

but what else do i need to run them, i know i need the special spring, but can i keep the hydraulic lifters? do i need different gears? etc?

you will keep the hydrolic lifters but u really need to get the BDE pulleys this way u can keep the vtc as well

why the 400+? just get the 500's

 

you'll need stiffer valve spings to match, keep the lifters, and cam sprocket adaptar depending on the year of year car.

 

VTC is stock and will be retained, though they can get noisy due to stiffer springs, BDE replacements are the fix for this

Do you still get everyday driveability with the 500's or crappy idle?

In a word no,they are a mild profile and will retain decent idle,but wil be help the VG breath much better.

do you think i should get 500's then? its not a daily drive any more,

supporting upgrades,

90mm pistons and forged rods

1mm oversized valves,

1000cc injectors, (only because i bought the wrong fuel rail for 555's ... )

not sure what turbos yet.

 

was going to get stiffer springs

 

are the stiffer vtc springs no good then?

yes ... thats what i'm getting plus BDE VTC pulleys and BDE Exhaust pulleys

not doing the 1mm over sized valves but had my ones Cut back at more of Deg Angle

 

the Stiffer vtc springs is a must with normal and uprated cams/pulley

thanks, getting excited about driving it already though my rebuild consists of a re bored block and that it at the moment lol.