saxo 1.4 with 1.6 head

1. nick-w-saxo Infrequent Poster Joined: Jun 2009 colne lancashire Posts: 121 Posi Blue Saxo VTR

   #1 11th August 2009, 14:52

   right so my mate has a 1.4i saxo with a 1.6i 8v head on it, he insists that makes it faster however i've been told it lowers the compression ratio as its made for a bigger engine, and if he put a 1.1 head on it it would increase the compression ratio and make it faster.
   
   is this correct? thanks
2. user_22749 Saxperience Post Whore Joined: Apr 2008 N.Wales Posts: 7746 e46 M Sport

   #2 11th August 2009, 14:56

   Erm, im not an expert on this but i though a 1.6 head would be alot better than a 1.1 head.
   My mate has put my old vtr head on his quicksilver (1.4) and it seems faster and alot more responsive.
3. user_34833 Infrequent Poster Joined: Jun 2009 Posts: 117

   #3 11th August 2009, 16:26

   I dont have a massive knoweldge of engines but i would have thought the 1.1 head would have smaller valves???
4. SAM33R Established Member Joined: Nov 2006 Posts: 2139 DIABLO RED 106 GTI E36 M3 EVO

   #4 11th August 2009, 16:29

   never new you could mix top and bottom ends... besides.... changing the head wont change the bore size will it?
5. user_8040 Saxperience Post Whore Joined: Dec 2005 MaDchester Posts: 8432 Vts

   #5 11th August 2009, 17:50

   pointless tbh, there also the fuelin the think about etc as the ecu will be set up for a std engine..
6. SAM33R Established Member Joined: Nov 2006 Posts: 2139 DIABLO RED 106 GTI E36 M3 EVO

   #6 11th August 2009, 18:23

   so how about a vtr head and ecu on a 1.4 block? will it work???
7. Lucas_LFC Frequent Poster Joined: Mar 2009 Northern Ireland - Co. Londonderry Posts: 540 Ep3 type r + Saxo VTS Old: '89 205 1.6 GTi

   #7 11th August 2009, 20:03

   yea i thought that if you had a vtr head, that it would increase the compression rates, hence more air being forced, so more power, but thats what i think
8. Mochachino Saxperience Hardcore! Joined: Nov 2007 Guantanamo Bay Posts: 28700 oyster card

   #8 11th August 2009, 20:05

   But the displacement is in the bottom end which would still be 1.4
9. Mochachino Saxperience Hardcore! Joined: Nov 2007 Guantanamo Bay Posts: 28700 oyster card

   #9 11th August 2009, 20:07

   Would be better putting XSI or s1 rallye head on.
10. n123 Infrequent Poster Joined: Sep 2008 Posts: 144

    #10 11th August 2009, 21:44

    the block of the 1.6 goes perfeclty with the 1.4 head , a mate have his 106 like that and is very very fast.
11. vtr_chris90 Established Member Joined: Jun 2008 nuneaton Posts: 1796 LY R26

    #11 11th August 2009, 21:54

    putting a vtr head onto a 1.4 bottom will hardly make much difference for the hassle of the change, you more than likely wont gain anything tbh they are pretty much the same head as far as im aware if your on about furio and vtr, there maybe a tiny bit more duration, but its not worth it mate
    
    if you are going to change the head then id highly recomend using either xsi or rallye head like db_sax said
    
    because these heads have mild cam standard and the cam in them are actually higher duration and lift than most mild cams you can buy
    also the head has stiffer springs plus non roller rockers, so are alot more capable of higher revs if you decide to get remap and raise the limiter, plus will be alot more responsive and well worth changing
    
    you can pick up one of these heads for about 70 or 80 quid
    
    alexb as one for sale atm its in great condition had a rebuild not too long ago all you need is a rocker cover, he wants about 70quid for it
12. CraigLovelock Saxperience Forum Bum Joined: Jan 2009 Soton - Hedge End Posts: 3143 TT 225, Charged Eunos

    #12 12th August 2009, 02:30

    Quote:

    Originally Posted by vtr_chris90 putting a vtr head onto a 1.4 bottom will hardly make much difference for the hassle of the change, you more than likely wont gain anything tbh they are pretty much the same head as far as im aware if your on about furio and vtr, there maybe a tiny bit more duration, but its not worth it mate if you are going to change the head then id highly recomend using either xsi or rallye head like db_sax said because these heads have mild cam standard and the cam in them are actually higher duration and lift than most mild cams you can buy also the head has stiffer springs plus non roller rockers, so are alot more capable of higher revs if you decide to get remap and raise the limiter, plus will be alot more responsive and well worth changing you can pick up one of these heads for about 70 or 80 quid alexb as one for sale atm its in great condition had a rebuild not too long ago all you need is a rocker cover, he wants about 70quid for it

    So... i could get this + a new rocker cover... then get it fitted to my furio?
    
    What sort of gains you reckon you would see?