I've seen so many different responses on this particular topic. KR Cams - Good Midrange, no top end past 6k? ABF Cams - Good Low end? Pulls all the way to 7k? Exhaust Cam - ?? Mine is a Golf Mk2 2.0 16v KR Standard Head/Cams, 50mm Inlet on ABF Bottom end built recently from info from these forums and I have just booked my car to be setup on the rolling road at Stealth. Other mods are Piperx panel filter and a Miltex exhaust system. Any info would be great. I have both cam sets and looking for a good torquey power band and decent top end. The KR's im using give good midrange as said and no top end and I dont know if the having it setup at Stealth would solve this issue.
The ABF's have the highest lift out of the std cams not sure on duration and powerbands tho. Using a full ABF engine in a Mk2 with k-jet inlet and it goes realy well, vv torquey right fron 1.5/2k and revs clean to 6.5/7k (only driven it once)
If you go ahead and change the cams, i'd be interested to know what difference they make to the power delivery.
I really liked the feel of the twin exhaust cams in GVKs car, defo seemed to have a nice urge between 6-7k when mine on std KRs doesnt, it revved more like a car with aftermarket lairy cams at the top end. (lightened flywheel may also help the free revving feeling) Cant really compare too much tho, as our car tho are both on dif bottom ends etc & he said it had lost him a bit of mid range torque, but it felt great to me. Its still slow tho- of course For some reason I didnt think you could use ABF cams in a KR head tho? or am I wrong in thinking that.
You can use abf cams in kr head.Hotgolf tried both and said that abf was smooth and kr gave a big kick at 4k so he stuck with the krs I have a abf zorst cam that has been modded to use as inlet cam just sat at home as im using a kr 1
Tub always has maintained that his ABF cams felt more eager at the top end than his KRs. ABF cams = more lift but less duration than KRs, so swings and roundabouts, you'd think?
Smithy- well ive got a brand new pair of ABF cams, waiting for the $ to sort its self out tho as worth lots more to the yanks & moose lot- than over here. However I don't think you can just bung 'em in a KR, think its the dizzy drive on the exhaust cam thats different & needs machining- guess hotgolf is the man who knows tho.
KR dizzy goes straight on to the ABF head and the ends of the cam with the slightly off center slot is the same. Edited by: Dub Nutta
How bout a just swapping just the front KR cam for the front ABF one (with both exhaust cams being the same?). Ok so the ABF definitely has the top-end to 7k where the KR drops off a 6k but whats the ABF's low and mid like. I did hear that the ABF cam gives "creamy" midrange and a smoother running engine. I read somewhere, cant remember clearly that the ABF is identical to the US "Autotech" or "Neuspeed" cam. Gives better lowend (800rpms lower) and top end (compared to the us cam though). Any input on this? Tub says that the ABF cams give good low and pulls all the way to 7k somewhere in the forums. But his engine is/was? a full abf on K-jet. Mine is a kr head/cam on an abf bottom on K-Jet. If I put in the ABF front cam in the kr head with this particular setup then..? Stealth setup coming soon, I want it tuned with the best "stock" parts I can get hold of. If the kr's are better anyways, will the stealth setup give power over 7k? I have both cam sets available. Help!
