WHATS LIGHTER??? and where the power diff from vtr

1. yorkie Saxperience Post Whore Joined: Dec 2005 flavalas of york United Kingdom (England) Posts: 8456 gen7 toyota celica

   #1 28th June 2012, 14:29

   mk1 vtr flywheel or mk2 vtr flywheel anyone know???
   
   also where does the power different come from beween a mk1 vtr and mk2 vtr
2. user_36974 Frequent Poster Joined: Aug 2009 Manchester Posts: 570 Mercury Grey VT?

   #2 28th June 2012, 17:45

   not sure about flywheels but i know the mk2 inlet ports on the head are better than on the mk1 heads.
3. Gandi699 Saxperience Post Whore Joined: Apr 2011 Posts: 9100 Amazon green VTR 16v, Inferno RS clio 182

   #3 28th June 2012, 20:34

   I didnt think there was much in the heads on VTRs (xsi heads not withstanding), apart from the rocker setup? thought it was mostly down to map, inlet and exhaust
4. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #4 28th June 2012, 20:35

   inlet set up
   
   slightly higher CR as far as im aware
   
   and better ecu/mapping
5. user_15989 Saxperience Forum Bum Joined: May 2007 Posts: 4857

   #5 28th June 2012, 22:03

   flywheel mass does not change power output.
   
   Early big valve black top heads such as black top VTR, 106 1.4 XSI, AX GTI, 106 1.6 Rallye and such like are all basically the same head. There are a few small differences over the years but practically speaking there all the same valves, rockers and casting.
   
   The early silver top heads use a combustion chamber that is missing some of the ally out of it. They also came with roller rockers and a few other variants. They tend to be the least desirable for tuning if your talking stock hatch style tuning. If your making a stock hatch your normally best with the early black top 106 or the latest saxo with the 0-0-0-0 head spacing.
   
   If its a road car it does not really matter what one you start with as you can always change things.
6. user_57064 Established Member Joined: Jan 2012 south essex!! Posts: 2442 posi blue vtrs race car

   #6 28th June 2012, 22:09

   Yeah the phase 3 head is higher compression, better airbox, alot larger exhaust mani and higher flow cat, better map due to 2 lamdas and more accurate readings, stock hatch as sed above is true but for road you can port and polish and open cams and open mani... So on and so on...
   
   Sent from my GT-I9100 using Tapatalk 2
7. user_32315 Saxperience Post Whore Joined: Mar 2009 Uppingham, Rutland Posts: 9569 mk1 JP4'd VTR, '16 Fabia Monte Carlo

   #7 28th June 2012, 22:56

   Quote:

   Originally Posted by AXracing flywheel mass does not change power output.

   to be fair he's asking which flywheel is lighter not which one produces more power
8. Tom5190 Saxperience Post Whore Joined: Sep 2007 Someones Bumhole Posts: 5721 Mk2 16v Desire

   #8 29th June 2012, 00:18

   Get the flywheel lightened and it wont matter
9. yorkie Saxperience Post Whore Joined: Dec 2005 flavalas of york United Kingdom (England) Posts: 8456 gen7 toyota celica

   #9 29th June 2012, 08:29

   Yea i know it doesn't i was thinking put new engine in sax this weekend and i have a mk1 and mk2 flywheels and if they both fit i was going to fit the lighter one...
10. piperrs Infrequent Poster Joined: Jun 2011 Piper HQ Posts: 117

    #10 29th June 2012, 09:40

    I guess you already know that the clutch bolt spacing is different between the two..