4-1 manifold question? it not been asked

1. Dasher_VTR Frequent Poster Joined: Aug 2007 Swanley,Kent Posts: 866 saxo vtr

   #1 3rd July 2008, 20:00

   i have cammed vtr 285 pipers pushing 122bhp. i heard 285 give more top end power which i noticed because the power really kicks in above 4'500rpm so would a 4-1 be better? also they are cheaper than 4-2-1 mani's.
2. phillyc Regular Poster Joined: Feb 2008 torquay (devon) Posts: 269 saxo 02 vtr straight through exhaust

   #2 4th July 2008, 16:22

   I would say a little bit more expensive as a tad harder to get hold off but not much difference in price.
   I fitted the piper 4-1 manifold as no oil filter modifications are needed as with some manifolds when fitting to a mk2.
   did you get that bhp figure on a rolling road or just an educated guess and with just the cams coz I was thinking of fitting some soon and thats quite an impressive figure or have you got other mods.
3. VtsTom Saxperience Forum Bum Joined: Oct 2007 Spalding-ish Posts: 2512 Mk4 Anniversary golf. 106 Quiksallye

   #3 4th July 2008, 16:30

   Supposidly a 4-2-1 is better for mid range and 4-1 is better for higher rpm range. So in theory yea, a 4-1 would suit you better
4. RedB Saxperience Post Whore Joined: Apr 2007 Haywards Heath Posts: 8445

   #4 4th July 2008, 16:47

   Need to have a decent induction and straight-through system to go with if you havnt already dude.
   
   Power all the way through the range with a 4-2-1 and cams in theory but VTR's suffer top-end compared to VTS' so 4-1 may be better.
5. Dasher_VTR Frequent Poster Joined: Aug 2007 Swanley,Kent Posts: 866 saxo vtr

   #5 4th July 2008, 18:09

   it is a rolling road figure i only have and open air filter and ashley system. i was gonna go supersprint 4-2-1 but £250 is steep i was looking more in the £150 pound range but i don't move oil filters and stuff.
6. VtsTom Saxperience Forum Bum Joined: Oct 2007 Spalding-ish Posts: 2512 Mk4 Anniversary golf. 106 Quiksallye

   #6 4th July 2008, 18:11

   GMC stainless 4-1 heat wrapped is your best bet. Not cheap but by far the best quality i ever had
7. KamRacing Saxperience Addict Joined: Nov 2006 A farm shed in Aylesbury Posts: 14916 Corolla AE86 Peugeot 205 B18C (in bits)

   #7 4th July 2008, 19:57

   it really will not matter that much on a road tune engine
8. darkslag72 Established Member Joined: Dec 2007 Harrietsham/Lenham Posts: 1388 106 xsi

   #8 4th July 2008, 21:18

   serously you will noticed no difference between manis. espicially on a road car