GolfGTIforum.co.uk
Model specific boards => Golf mk3 => Topic started by: Rmachines on 18 October 2010, 21:38
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Im ooozing for lumpy idle! Something about the sound of it that seems to turn me on at the moment, i have been thinking about doing this for a while now but need some advice.
Not looking to spend much so i have narrowed it down to newman cams
I can choose between
272* INLET & 272* EXHAUST
POWERBAND 3000RPM TO 7500RPM
Or
268* INLET & 268* EXHAUST
POWERBAND 2500RPM TO 7000RPM
I know the 8v engine doesn't like being revved so the first one seems like a good choose but im worried it wont effect the idle? I want it to be a bit lumpy, but not stupidly difficult and awkward to drive
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It's not just about duration, valve lift is also important.
My old one had this spec
Sports ' R ' 2500-7000 11.53mm 11.53mm 285 Deg
^lift ^lift ^duration
I'd go for the 272 out of them two, but if I was to go outside of them two, I'd go for what I had before, Kent GS23H :smiley:
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Apparently both of these are OK for road use and OK with hydraulic lifters,
The 268 is 11.37 lift - Fast road/rally
The 272 is 11.47 lift -Tarmac rally/sprint
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The ones I used was used with the standard top end. It was a tarmac rally spec cam, but had more durationa nd more lift than the 272 you're showing there.
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Khare, how did you find it? I know yours was a bit more, the next one up they sell is even more again and requires mechanical lifters, so this is the limit for me.
Did you loose much bottom end and how did idle effect driveability?
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When Khare took me out in his it was very different to my old mk3 8v. The powerband had defiantly moved and didn't run out of puff.
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Standard
(http://i254.photobucket.com/albums/hh115/kharekatoh/golf%20mk3/dynochart1-1.jpg)
Cam, panel filter, exhaust (same one even :tongue:), modified airbox
(http://i254.photobucket.com/albums/hh115/kharekatoh/golf%20mk3/RtechUKdynochart.jpg)
Idled like a chevvy V8, bit of kangarooing when pulling away if you weren't careful, great sound when cam kicked in.
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Awsome! Thats settled then. Dont suppose any one has one for sale do they? Cant find any used ones anywhere, but i would prefer new for obvious reasons. Lets see what pay day brings :smiley:
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which ones would you recommend for a 16v?
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Im not too knowledgeable about engine internals, but, how hard is it to change cams? Worth doing or only with other upgrades? What sort of cost are they to buy? Sorry for the thread hijack (and the dumbass questions).
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If you can do a cam belt you can do a camshaft, they are simple as far as internals go, Price ranges from £160 to £500 It makes it sound nice, makes it go better but its all about shifting the power, it doesn't make power as such, it will take for eg.. 10hp from 2000 rpm and give it to 4000 rpm, depending on the type you fit. Thats about as much as i know about uprated shafts.
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I would run a 268, to get the most out of a 272 you need other mods really.
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I would run a 268, to get the most out of a 272 you need other mods really.
what other mods wayne?
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I would run a 268, to get the most out of a 272 you need other mods really.
what other mods wayne?
Better breathing, gas flowed head and a remap or maybe even a bigger valve head.
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It'll be better but not essential. I'd still get the highest spec you can.
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thanks wayne & khare :wink:
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Wayne didn't we have a debate about cams on here and you said they were sh!t in the 8v?? I am pretty sure you did!!
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This was the resulting thread i believe... Again found in the mk3 maint section
http://www.golfgtiforum.co.uk/index.php?topic=129138.20
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Wayne didn't we have a debate about cams on here and you said they were sh!t in the 8v?? I am pretty sure you did!!
Not quite, I am old school and think do the cam last as such plus you were saying the standard cam was only 204 degrees, however with seeing what gains Khare got then it looks a good step.
Hope this clears this up :smiley:
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Cams will always make a difference, but its moving the power not making extra power, to make extra you need to combine it with others to get the "best of both" Personally i want my engine to have a bit more up the rev range and the sound of the cam, but not big power.
when they say they add 10hp its taking it from somewhere else from the rev range but who drives arround at low revs ay?
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Well as my graph showed it made a good improvement, and all I had was panel filter, cat back exhaust and modified air box.
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Does any one know off hand if the MK2 8v and MK3 8v are interchangeable? A lot seem to be listed for MK2 and iirc the the MK2 one fits the MK3 so can i fit one made for a MK2 8v ok?
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Don't think a mk2 cam would work or fit, PB engine is a lot different to a 2.0 mk3 lump.
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Oh right, i thought people used the PB Cam in the 2E/AGG ? Or is that the whole head?
Although im not wanting to use a PB cam but an uprated cam to fit a PB?
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Oh right, i thought people used the PB Cam in the 2E/AGG ? Or is that the whole head?
Although im not wanting to use a PB cam but an uprated cam to fit a PB?
Not sure, I would think it is different but I could be wrong
Does the AGG have a cam bearing missing the same as a PB
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Though the mk2 and mk3 8v engines were very similar? Just the stroke changed to give 200cc more and a few other fancy bits? I'm not whether a mk2 cam would fit a mk3 head, but I wouldn't see a reason why it wouldn't.
What's your budget on the cam dude?
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Its not high, i know some cams direct from suppliers are £300 ish and im looking for the £160-£180 mark max, Hence why i would go for a second hand one, but there are a few Newman cams on ebay within my price range.