cam options

ok i have heard that the best cam for a 8v is the kent ast2. is this the one and only??

as i have also found another that looks better. its a nvo63, and this is a 1600 camshaft rather than a 1300 cam (ast2).

the engine is a 1600 and will be running mapable management.

spec

AST2

power band 3000-7000
valve lift 10.33 mm
duration 290 degree
timing 36/74 74/36

NVO63

power band 3000-7000
valve lift 11.80 mm
duration 312 degree
timing 52/80 80/52

just looking at these figures the nvo63 looks alot better. and this cam can still retain the hydraulic lifters. what do you lot think?

bruce

as far as i understand it the NVO ones were for injection engines as they had a different overlap to the AST series


im looking at a 320deg hydraulic cam :-) should be nice

id say get a kent AST2

I've got an ast2 going in my gsi with my twin 40's. Can i not use the hydraulic valve lifters? I've seen solid lifters but they cost fook loads :o

dunova you can use hydralic lifters!!

and camb i will be using mapable management (injection) so you not think i would be better with the nvo63!! and from what you said the ast2 is more suited to carbs!!!

bruce

Relief :P

And as for the cam i'd go for the nvo63 with mapable management- i think you would see better performance with it than you would the ast2. As you said, the ast2 is better suited to carbs.

the nov cam would be good and give more power than the other, as the duration is longer and lift is more. but you may suffer lower end power and rough idling. proper rally style though.

when i compared the figures the nvo63 is going to give more power, but the ast2 has been praised by alot of guys. but they have all been running carbs. its could be better suited to the 1600 engine im not sure that is why i asked. did dan not experement with lots of different cams before sticking with the AST2??

as for it not idling correct mapable management will sort that out. will run straight when set up.

bruce

rough idleing is a bit of myth. Friends cams are 308deg and idels just as smooth as mine 8)

ive never seen or had a car with a cam in that doesnt have a rough idle. My 2lt idles from 900 to 1200 you can hear it rev then drop. My brothers 1600 does the same, so did my 1400. You can spot a car that has a cam in by the way it ticks over, well i can anyway

im sure the only reason it sounds rough is because the ecu does not understand what the cam is doing as it has certain values to work in between. but with carbs or a mapable ecu it should run fine.

bruce