2sheds 10 Posted December 6, 2013 So I was swapping my 9a cams out for the KR ones I've had sitting round for a while, everything was going great and went in a dream, then I was torqueing up the cap nuts and this happened [ATTACH=CONFIG]76639[/ATTACH] Now, I have an ABF head that a friend gave me (minus cams)and was wondering (as dont have time/money right now to get it skimmed) Would it be better to use it as is (any benefits of ABF head over 9a?)or would it be better trying to remove existing broken stud and replacing it with one from the ABF head? Quote Share this post Link to post Share on other sites
davidwort 0 Posted December 6, 2013 ABF head is better than the 9A, slightly improved valvegear, but replacing the stud in the 09A head should be pretty easy??? Quote Share this post Link to post Share on other sites
Matt@OCD 0 Posted December 6, 2013 Aren't the heads the same and it's just the cams that differ? Anyway, I'd just whip the stud out, will be easy to swap over. If you were to swap the head, it might not need skimming but would ideally need checking as it might just leak! Quote Share this post Link to post Share on other sites
davidwort 0 Posted December 6, 2013 no, the abf head is a slightly different casting again (from the KR and 9A) and has different valves, guides, collets, springs etc, it was built as a higher revving 2L and as the final 16v head revision from VW has a number of improvements over the previous ones. Quote Share this post Link to post Share on other sites
2sheds 10 Posted December 6, 2013 Numbers on side of both heads match so will look further into it before finalising, got stud out easy enough and replaced, then just to be a ****er another sheered so I'm going to replace the lot, thanks for info though ;D Quote Share this post Link to post Share on other sites
davidwort 0 Posted December 6, 2013 What are you tightening to? Cam caps aren't very tight Quote Share this post Link to post Share on other sites
2sheds 10 Posted December 7, 2013 15Nm is all, dialled it down to 12 to be safe and still went, only on exhaust side though, inlet seem solid. Quote Share this post Link to post Share on other sites
seanl82 23 Posted December 8, 2013 If two have gone, chances are they're all quite brittle. I'd change them all for new as the last thing you want is for another to go whilst its running! Quote Share this post Link to post Share on other sites
lewvw 10 Posted December 8, 2013 I'm guessing someones been at them before with a big ol' ratchet! Quote Share this post Link to post Share on other sites
2sheds 10 Posted December 10, 2013 Well the throttle body is flowed and inlets been ported so someone spent some money on it, yet they never switched the cams! (and yeah, 6 in total stretched so all changed) Quote Share this post Link to post Share on other sites
