All Things Mk5 > Mk5 General Area
Down on power....
RedRobin:
--- Quote from: ukdub on November 09, 2008, 11:15:41 am ---RR I think you will have the AXX engine like myself. Which is what is fitted to the early GTI's. I took out my HPFP about a month ago to have a look at the follower and cam lobe. Everything was fine and showing no sign of wear. As for which cam, I have the 2 piece cam fitted.
Which means it has the hardened lobe on which the follower and HPFP runs on. Yours should be the same. :happy2:
Oh my engine has 67k on it and has been running APR stage 2 for 45K
Have a look at this
http://forums.vwvortex.com/zerothread?id=3754451
--- End quote ---
....Ah! That's good news - Thanks ukdub :happy2: My VW dealer has already checked my follower and cam lobe when there was first news of that recall on the subject. Yes I am AXX - 06-Build in July 05.
--- Quote from: bacillus on November 08, 2008, 10:27:01 pm ---The A cams have softer fuel pump lobes and tended to wear more quickly than originally anticipated even when the fuel pump cam lobe follower was in good condition. This could occur with the standard pump.
VW recognised this "deficency" and updated the cam to version B on later cars that is less prone to premature wear. I think they also altered the hardened coating on the surface of the fuel pump cam follower to compliment this change.
The fact that you have one of the earlier cars prompted me to alert you to a potentially costly upgrade in the short to medium term should you go with the upgraded pump and find that your cam has worn prematurely.
--- End quote ---
....Am I right in understanding that you and ukdub are talking about the same thing?
[As SteveP will confirm, I'm not even capable of removing my stock engine cover!]
Thanks :happy2:
Top Cat:
Really great news your car is back to rude health. :drinking:
And well done for resisting the calls for the KO4 :wink:
RedRobin:
--- Quote from: neg on November 09, 2008, 11:19:14 am ---Regarding your turbo I meant if you sold as-is and then someone else then got it refurbed .. but like you say it might not be much different that getting an exchange unit from VW - hopefully the let you do an advance exchange. Also again like you said warranty might not count :wink:
--- End quote ---
....Yes, I could sell my turbo with its crack (pics coming soon) for someone else to have a professional turbo specialist check out, but that would cost probably about £200 without their extra cost of putting it right. Also, if the casing has already failed, how do we know it won't fail elsewhere - I think this is why people advise against used turbo's.
We don't actually know why it failed - Was it metal failure due to VW manufacture? Was it due to being overstressed by modifications? - We'll never know for certain.
neg:
Good point - but I suppose if you had exchanged yours no doubt it (most likely) would have been reconditioned and put back on the shelf. Either way I understand what your saying.
ukdub:
--- Quote from: RedRobin on November 09, 2008, 12:25:26 pm ---
--- Quote from: ukdub on November 09, 2008, 11:15:41 am ---RR I think you will have the AXX engine like myself. Which is what is fitted to the early GTI's. I took out my HPFP about a month ago to have a look at the follower and cam lobe. Everything was fine and showing no sign of wear. As for which cam, I have the 2 piece cam fitted.
Which means it has the hardened lobe on which the follower and HPFP runs on. Yours should be the same. :happy2:
Oh my engine has 67k on it and has been running APR stage 2 for 45K
Have a look at this
http://forums.vwvortex.com/zerothread?id=3754451
--- End quote ---
....Ah! That's good news - Thanks ukdub :happy2: My VW dealer has already checked my follower and cam lobe when there was first news of that recall on the subject. Yes I am AXX - 06-Build in July 05.
--- Quote from: bacillus on November 08, 2008, 10:27:01 pm ---The A cams have softer fuel pump lobes and tended to wear more quickly than originally anticipated even when the fuel pump cam lobe follower was in good condition. This could occur with the standard pump.
VW recognised this "deficency" and updated the cam to version B on later cars that is less prone to premature wear. I think they also altered the hardened coating on the surface of the fuel pump cam follower to compliment this change.
The fact that you have one of the earlier cars prompted me to alert you to a potentially costly upgrade in the short to medium term should you go with the upgraded pump and find that your cam has worn prematurely.
--- End quote ---
....Am I right in understanding that you and ukdub are talking about the same thing?
[As SteveP will confirm, I'm not even capable of removing my stock engine cover!]
Thanks :happy2:
--- End quote ---
My understanding is that the yanks never got the AXX engine. So their first engine had the cheaper single piece cam (revision A)
Lots of them had problems with fuel cuts and fuel codes being logged due to this cam begin too soft on the lobe. So revision B came out (2 piece cam) If you look at the link it explains this better that my waffling. :happy2: I know a few cars over here have had this issue. Awesomegti's demo car being one. That failed at 20K. It seems the early gti engines (AXX engine) are pretty different to the later engines (GTI only not ed30) We have the 2 piece cam and different pistons as well. I was told by Keith at APR that the AXX is the only true lean burn engine. What that means I havn't a clue :laugh:
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