D_Bat
Veteran Member
Just as the topic states. I forget which one was a upgrade over the stock MK3 cam. I remmeber seeing it somewhere but couldn't ifnd it again through the searches.
Which MK4 Cam Was A Upgrade Over the MK3 Cam?
- Thread starter D_Bat
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TDIMeister
Phd of TDIClub Enthusiast, Moderator at Large
None. First of all, the Mk4 TDI cam has the same specifications as the Mk3, and second, you cannot interchange the cams between generations without machining modifications.
See picture. Left -- Mk4; right -- Mk3
See picture. Left -- Mk4; right -- Mk3
silverbox
Veteran Member
The cam at the right looks to have rounder lobe (more duration?)
TDIMeister
Phd of TDIClub Enthusiast, Moderator at Large
The cam on the right is a non-machined blank.
You can use MK4 cam in a MK3 because the vacuum pump is driven from the intermediate shaft in the block,not from the camshaft.TDIMeister said:None. First of all, the Mk4 TDI cam has the same specifications as the Mk3, and second, you cannot interchange the cams between generations without machining modifications.
See picture. Left -- Mk4; right -- Mk3
TDIMeister
Phd of TDIClub Enthusiast, Moderator at Large
The slots also serve for alignment and fixing the cam timing.
I don't understand well... my car is an AFN(1998) and i supposed that is a MK3 but the vacuum pump is driven from the intermediate shaft...is my engine MK3 or MK4?mk3pd said:
Wich is the improvement for to change a MK3 cam for a MK4 cam?
TDIMeister
Phd of TDIClub Enthusiast, Moderator at Large
THERE ISN'T ANY!!Satiro said:
Satiro, I can understand how you may be confused. The Mk3/Mk4 nomenclature is referring to iterations of the Golf/Jetta/Vento/Bora line. In the US, there was a limited number of TDI models available (1Z/AHU in the Mk3 and ALH in the Mk4). The 110bhp AFN was never available across the pond.
In Europe, the AFN was available in the Mk4 Golf as well as a number of other VAG group cars, including your Ibiza, which I think may be a Mk3 Ibiza.
In Europe, the AFN was available in the Mk4 Golf as well as a number of other VAG group cars, including your Ibiza, which I think may be a Mk3 Ibiza.
My old now broken in two Gti "petrol cam had the no slot issue which only had markings instead for the setting of tdc plus had a couple of shims in the other end to lock the sprocket onto the cam the gti cam not being tapered as TDIMeister described in this or another thread...................it would have been much easier if a slot had been made to lock it down though as it was a real hassle when i had to change the lifters as i also didn't want to have to take the sprocket/tb off etc........(pain!!)........my mistake sprocket not belt , indeed the tb had to be removed.
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