supercharging an 8v gti

[bored_Welsh_lad]

don't spend money on headwork,   not worth it with boost  you'll just notice your boost pressure drop a bit  it's cheeper just to make the charger blow harder

Danny, i thought you were running a valver.. I was talking to nando about the 8v and he said the power that was quoted by alldubs 8v was not at 10psi on the standard pulley but 5psi with the head choking up at 5k and backfilling to 10psi.. Nando said the major limiting factors on the 8v is the flowrate of the exhaust manifold and head.. He said to flow decent boost it needs a decent head, making the charger flow more will only induce more heat surely?

[Khare]

DH said I can get a ported and polished head from a tuning company, forgot the name now, for £250..I might invest into it.

[axewielder]

the ABA had lower compression in standard form as most engines for usa market do.

std ABA compression ratio 9:1 iirc ,  you get the cr as useing 2 headgaskets on a european engine but keep the quish zone roun the edge of the cylinder whitch is a feature

so the extra volume was gained through the piston+ not the combustion chamber in the head being larger?

[bored_Welsh_lad]

DH said I can get a ported and polished head from a tuning company, forgot the name now, for £250..I might invest into it.

was that not the man in the shed on cgti?

[axewielder]

the man in the shed's work look pretty good but do you know whether he uses any kind of flow bench to test his work or isit all by eye, if so in NA aplications it can do more bad than good, a charged engine should be fine though but would be better if all ports flowed equally or closa too for smoothness

[Khare]

DH said I can get a ported and polished head from a tuning company, forgot the name now, for £250..I might invest into it.

was that not the man in the shed on cgti?

not it was a tuning company, JLE or something like that, can't remember.

[Larrychips]

not it was a tuning company, JLE or something like that, can't remember.

I was looking into supercharging my 8v GTi too...although, I have now decided to save the cash and buy a VR6.  You could spend upwards of £3000 on the 2.0 8v engine, and you'll still only end up with the same power as a bog standard VR6.  Anyway...while I was doing a little research, I found this http://www.cncheads.co.uk/vw_golf_8v_bv.html.  For £250 they take your head and machine it out to increase flow rates.  I was thinking about doing this...and upgrading the cam & injectors at the same time...   hope this helps...

[VeeDubGTI16v]

£250? you'll be lucky 

i know the 16v heads are £750 +vat

[bored_Welsh_lad]

Talking of headwork.. if your serious about having work done it might be worthwhile having a read of this to see where the gains are to be had...

http://www.clubgti.com/forum/showthread.php?t=202798