TB's and Turboing

1. vtr_driver Established Member Joined: Aug 2006 Consett Co.Durham Posts: 1126 2000 Ph2 VTR

   #1 14th December 2007, 09:36

   Has anyone turbo'd their TB'd car?
   
   I've seen it on other cars but never seen a VTr/VTS on TB's and supercharged or turbo'd.
   
   How does it work. As far as I can workout its a set of Jenveys or similar with the form of forced induction feeding the TB's through a sealed plenum chamber. How much power extra would the TB's Provide over a normal low compression VTs Turbo conversion?
   
   I know I'll never do it but I was just thinking about it.
2. CampDavid Saxperience Post Whore Joined: May 2006 Bedford Posts: 7457 Saxo VTS Peugeot 306 GTI-6 Astra SRI

   #2 14th December 2007, 10:53

   Virtually nothing, Sybez has done it and TBs don't really help, you're stuffing the air in under presure anyway so it won't help them breath any better.
   
   He's going back to a single TB now IIRC
3. Quick Saxperience Post Whore Joined: Mar 2003 United Kingdom (England) Posts: 7064

   #3 14th December 2007, 11:00

   TB often run lary cams that are not suited to forced induction, too much blow through!
4. vtr_driver Established Member Joined: Aug 2006 Consett Co.Durham Posts: 1126 2000 Ph2 VTR

   #4 14th December 2007, 11:07

   Ahhh right, I know of a lad who i running Bike Tbs and a Supercharger on his Hillman imp. Thought it might be an interesting conversion. But if its not worth it whats the point. A lot more money as well int it.
5. Coonper Saxperience Post Whore Joined: Aug 2007 Coventry Posts: 5182 Lupo GTI

   #5 14th December 2007, 11:22

   A supercharged hillman imp...
6. vtr_driver Established Member Joined: Aug 2006 Consett Co.Durham Posts: 1126 2000 Ph2 VTR

   #6 14th December 2007, 11:23

   Yeah its well cool. Its on Retro-Rides
7. jonezy Established Member Joined: Jul 2007 Carnforth (lancaster) Posts: 1617 55 CTR premier '97 posi vts

   #7 14th December 2007, 11:34

   i think you need roller barrel throttle bodies to do this,
   
   mostly seen on cossies, will be good because the have almost instant response
8. boz Saxperience Post Whore Joined: Jan 2005 somewhere on this planet, doing something..... around northumberland or in the middle of the sea Posts: 8774 Mk2 VTS track mk1 turbo vts scooby engined 2CV

   #8 14th December 2007, 12:59

   your much better off having a bigger plenuem made up and just fitting one larger TB.
   
   it seems a shame to have TBs in a sealed box, hides the awesome sound lol
   
   i have heard of people having trouble using multiple TBs or turbo and supercharged cars.
   
   i have looked into it myself and the bigger single TB, seems to be the way forward
9. KamRacing Saxperience Addict Joined: Nov 2006 A farm shed in Aylesbury Posts: 14916 Corolla AE86 Peugeot 205 B18C (in bits)

   #9 14th December 2007, 14:43

   theres no real point - you will have as good gains making a custom inlet plenium; being feed via a large single throttlebody. You wont have that instant response as you have a turbo spooling up.
   
   There are a few cars that run tb's and turbo as standard, notably the Nissan Sunny GtiR but they havent been significantly better than single tb turboed cars.
10. leeroybrown Saxperience Hardcore! Joined: Nov 2006 Durham Posts: 16000 Clio Trophy 025/500

    #10 14th December 2007, 14:47

    That yellow gti everytime i have seen it seems to have manged to snap the super charger belt
    
    TBH i agree with Damp Dave Too much going on under the body... something has to give
11. gazza808 Frequent Poster Joined: Jul 2007 Posts: 591

    #11 14th December 2007, 15:27

    Quote:

    Originally Posted by leeroybrown That yellow gti everytime i have seen it seems to have manged to snap the super charger belt TBH i agree with Damp Dave Too much going on under the body... something has to give

    only snapped belts cause of miss alignment and to much tension, and using a toothed belt.
    
    only problem about using throttle bodies its its very snatchy at low revs,
12. leeroybrown Saxperience Hardcore! Joined: Nov 2006 Durham Posts: 16000 Clio Trophy 025/500

    #12 14th December 2007, 15:46

    Still yet to see it run properly.
    
    Last 3 times i have seen it yet to see him give it some
13. gazza808 Frequent Poster Joined: Jul 2007 Posts: 591

    #13 14th December 2007, 16:28

    was running a ok last time but killed a conrod,
    
    new lump should be alot easier to drive,
    
    all on SSC
14. williamsvts Saxperience Post Whore Joined: Feb 2006 northumberland Posts: 7693 pulsar gtir, mk4 astra sxi

    #14 14th December 2007, 16:37

    was nt running a toothed belt when it snapped 1 at kames the other year.then the PAS went lol. he has no luck.