GTi Cam

This has been posted before but wasn't sure if I should bump the old thread or make a new one…

I know it's possible to run the GTi cam in the 1.8 Carb engine, but what would the implications be? I am already running a Weber replacement which I will be upgrading the intakes for.
Would it be advisable to upgrade the fuel pump etc to accommodate the new cam?

The cam will fit but I'm not sure of the gains you will get. It could be a whole lot of pain for not much gain!!
As I'm doing a cam swop on my car I have found out the pit falls with just getting the cambelt off, rounded allen scews everywhere!
There is also the cost element too, I've replaced all the belts, tensioner, rocker gasket and lifters (?86.00 inc discount from G&S)
If you want to swop the cam, a fast road cam may be a better investment, the Kent GS2H is said to give good results.
Hope this helps

You also need to be aware of using a hydraulic profile cam in a mechanical application, ie shimmed heads.
Theyre not interchangeable ( they will physically fit tho!) because the hydro cams have a less aggressive opening ramp to prevent the hydro tappets from being damaged by rapid lifting.
The mechanical heads dont suffer from that problem as theyre direct acting on the tappets which are solid.

Alright so if the road cam is the way to go I will have a look into it, much appreciated
Overboost: Is that to say the are not hydraulic? As far as I knew they were, though I have only just started to look into this… :?
This is a late Clipper with the GTi drivetrain if that makes any difference?

Late clippers will be hydraulic followers (mine is a 1991 fitted with Hydraulic).
So if your going for a kent It needs to have a H at the end of the code ( I have GS2H fitted )
If you do go down the fast road cam you may need a bit more fuel, not sure the clipper carb will be up to it.
Also you may want to fit a vernier pulley at the same time as a cam, these allow the timing to be dialed in correctly. I think mine was about ?40 new from flea bay.
Good luck with the conversion if you undertake it, it's not too hard to DIY if you have the right tools (a new set of lifters would be a worth while investment too)
 

Thanks for the info Chris, I have a weber conversion already on the car, I assume I will need a new fuel pump at any rate lol
I'm glad you cleared the hydraulics up for me, I was worried for a second then. Will look into this soon, as for timing, that I am not looking forward to, might be worth just getting the job done by the pros do you think?
Where did you source the cam?
edit…I realise that might sound like a silly question, I mean is it best to go direct? =P

No worries, no point doing something and not telling others about it!  

I sourced the cam second hand from a guy on ebay, Had to fight tooth and nail for it! I know Larkspeed in Leeds do cams and kits, prob best to look over the net and see what deals are out there. I believe Newman Cams are quite good, but can't recomend which duration. Anyone else know??
Also you may find it cheaper to buy bits from different sources, I got belt, tensioner, followers and cam cover from G&S for less than ?90 with club discount.

As for swopping the fuel pump that's a whole new can of worms. I have a facet posiflow pump on the cabrio as I'm currently running a single delorto 40 carb on a lynx manifold (can't get the bloody manifold for the twin 40's on to the head - another story). With it being electric I need to put in a GTI fuel pump relay, not an issue for me as I don't have the heated manifold anymore, however you may find a problem here as the relay uses the same position as the heater relay, so you'd have to bin the manifold heating…..  :dontknow:

correct me if i'm wrong but if using a weber theres no pre-heater anyway? and pre-heaters seldom work anyway, ive heard of cutting down the pre-heater to half hight to help intake, assuming its the same as mk2

If the weber is a direct replacement then it uses the same inlet manifold as the pierberg, so it will have the heating in the manifold.
Only if the manifold is swopped will the heating element be removed completely.
As the clippers were in production 'til 1992 the engine is the same as used in the mk2's.

i stand corrected, i was trying to cut down the heater to half hight on a spare but it broke comin out. A thread on the mk2 site reckoned it was a tad hasty just smoothing it off but full hight restricted air flow, was thinkin to experiment n see