clarkie 1 Posted February 1, 2008 Report Share Posted February 1, 2008 would it make much or any difference havin a big valve head on a turbod vr6? what would be the advantages / dissadvantages? Link to post Share on other sites
gav_113 0 Posted February 1, 2008 Report Share Posted February 1, 2008 i did hear sumwhere that u would get betta results with a big valve head than flowing the head.. i was thinking bout it.. Link to post Share on other sites
FishWick 21 Posted February 6, 2008 Report Share Posted February 6, 2008 would it make much or any difference havin a big valve head on a turbod vr6? what would be the advantages / dissadvantages?Yes.Why does the 1.8T have 3 intake valves? To maximise cylinder filling :-)Exhaust gases are pumped out of the head by the pistons and straight onto a restrictive turbine, so you don't need to worry about exhaust valve size too much, maybe +1mm bigger......but.....if you use Ferrea inconel exhaust valves, they will better withstand the heat over the stock sodium filled valves.On the intake, +1 or +2mm to help cylinder filling along with port matched intake and low overlap cams.Personally, I would only use a big valve head if you have increased capacity.My +1mm big valve head with 263 low overlap turbo cams made an additional 50hp with the same boost.I'd say it's worth it if you want to get the most power with the least boost and extend the top end punch and rev range, otherwise stick with the stock head and turn the boost up :-) Link to post Share on other sites
Phat VR6 3 Posted February 6, 2008 Report Share Posted February 6, 2008 Kev... if i get insured on your car can i kill a tank of fuel in it please :-d Link to post Share on other sites
xyber 1 Posted February 6, 2008 Report Share Posted February 6, 2008 Keep an eye out on ebay and german ebayA company sells they every now and then, built with all Schrick hardware for about £500, I wanted one back last year but couldnt afford it and they only seem to pop up now when im skint!!Found it whilst searching for a schrick mani on a worldwide search Link to post Share on other sites
FishWick 21 Posted February 7, 2008 Report Share Posted February 7, 2008 Kev... if i get insured on your car can i kill a tank of fuel in it please :-d :-) LOL! That would only be about 5 minutes worth ! Link to post Share on other sites
kadvr6 0 Posted February 7, 2008 Report Share Posted February 7, 2008 but what a fun 5 minutes though Kev (6) Link to post Share on other sites
VR6Pete 1,455 Posted February 7, 2008 Report Share Posted February 7, 2008 I've got one of the Schrick Big Valve Head jobbies on my mk2 VR6 (i can officially say that now the engine is in!) Pete Link to post Share on other sites
xyber 1 Posted February 7, 2008 Report Share Posted February 7, 2008 I've got one of the Schrick Big Valve Head jobbies on my mk2 VR6 (i can officially say that now the engine is in!) PeteDid you get your from ebay? Any good?(silly question ) Link to post Share on other sites
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