Need advice for track VTS Engine Mods

1. user_28362 Saxperience Post Whore Joined: Nov 2008 Posts: 5306 911 Turbo

   #1 5th September 2010, 19:03

   I have a mk1 VTS Track car, the engine spec at present is as follows.
   
   Std exhaust & manifold with decat
   
   Cheapo enclosed raceland induction kit.
   
   Here is a video of the car on track.
   
   http://www.youtube.com/watch?v=5Zh2unerR_8
   
   
   I want to get the car to go faster, I will be reducing more weight as a start. I would also like to increase the power.
   
   I cannot increase the noise as I am restricted by track rules, so a big exhaust will be not an option.
   
   
   Would adding cams & an ecu be a waste of time with a standard exhaust ?
   
   When a car is cammed is it noticably faster than an uncammed one or is it not much faster ? has anyone done any performance test before , and after.
   
   Honest answers please.
2. 3cott Saxperience Forum Bum Joined: Mar 2008 Rotherham Posts: 4614 Black mk2 vts

   #2 5th September 2010, 19:21

   What exhaust system are you useing at the mo?
   
   If you want a quiet system why go for the magnex with a de-cat & 4-2-1
3. user_37194 Established Member Joined: Sep 2009 rotherham Posts: 1832 Be scirocco, full on 03plate track spec Saxo

   #3 5th September 2010, 19:26

   agree with scott, your aloud upto 110db iicr on most tracks, purely depends on budget, go for itbs cams and stand alone with good exhaust will see you 160+, but what brakes susspenion do you have?
4. user_15516 Saxperience Post Whore Joined: Apr 2007 Posts: 6640 Integra DC5R & VTS

   #4 5th September 2010, 19:32

   To do Croft at a reasonable price these days, your car needs to be under 88db static. Anything bar a standard exhaust will be over that.
   
   I don't think cams will give you any noticeable advantage mate. Get the car on a major diet and spend the money on better suspension, brakes and rubber.
5. user_28362 Saxperience Post Whore Joined: Nov 2008 Posts: 5306 911 Turbo

   #5 5th September 2010, 19:33

   Quote:

   Originally Posted by mark1311 agree with scott, your aloud upto 110db iicr on most tracks, purely depends on budget, go for itbs cams and stand alone with good exhaust will see you 160+, but what brakes susspenion do you have?

   Car has to be limited to 88db at 5000 rpm (that is the regulation the circuit)
   
   The car with the std exhaust, manifold & decat is 83dB at present
   
   
   The suspension is spax PSX, with poly bushes
   The brakes are 266mm with 23mm master cylinder
6. user_28362 Saxperience Post Whore Joined: Nov 2008 Posts: 5306 911 Turbo

   #6 5th September 2010, 19:36

   Quote:

   Originally Posted by LeeumH To do Croft at a reasonable price these days, your car needs to be under 88db static. Anything bar a standard exhaust will be over that. I don't think cams will give you any noticeable advantage mate. Get the car on a major diet and spend the money on better suspension, brakes and rubber.

   Croft is the track. the car is already stripped , but I reckon 50kg more to remove.
   
   Just looking for a bit more oomph,
7. 3cott Saxperience Forum Bum Joined: Mar 2008 Rotherham Posts: 4614 Black mk2 vts

   #7 5th September 2010, 19:39

   Is it 88db on all tracks or just croft?
8. JamesRm Forum Section Moderator Joined: Aug 2008 Liverpool Posts: 15517 Saxo VTR

   #8 5th September 2010, 19:42

   Could consider a little bit of headwork?
9. user_37194 Established Member Joined: Sep 2009 rotherham Posts: 1832 Be scirocco, full on 03plate track spec Saxo

   #9 5th September 2010, 19:49

   you could, still have 4.2.1, but have a sports cat not decat? maybe, cams and a remap will take you toabout 140/145 so will give you a decent benifit. turbo?
   
   also hope its onli croft with tht sound limit mind will have no chance
10. user_37194 Established Member Joined: Sep 2009 rotherham Posts: 1832 Be scirocco, full on 03plate track spec Saxo

    #10 5th September 2010, 19:49

    also considered a shorter gearbox?
11. user_36594 Established Member Joined: Aug 2009 Weston Super Mare Posts: 1298

    #11 5th September 2010, 19:52

    i had a magnex system on my old track car with decat and 4 2 1 and i made 86db when tested at combe. i was quite surprised cos it was near deafening in the car. it had been stripped out though
12. iw_laurence Established Member Joined: Apr 2008 Isle of Wight Posts: 1971 BMW E30

    #12 5th September 2010, 20:18

    I would give the engine a bloody good service, renew anything that looks worn and do suspension/bushes/brakes. You will want a nice strong engine if your going to be giving it some stick on track....
13. user_36594 Established Member Joined: Aug 2009 Weston Super Mare Posts: 1298

    #13 5th September 2010, 20:23

    If im right, jon's already been using the car on track for a while.
    
    I would suggest changing the filter for a better one as i personally think raceland ones are terrible and dont really allow much airflow as they have a small hole they use at the front of the slam panel for the cold air feed and a small cone filter. id suggest using a bmc or pipercross viper or venom.
    that and the exhaust i prev mentioned will already make it feel a bit faster and give it better throttle response.
14. user_28362 Saxperience Post Whore Joined: Nov 2008 Posts: 5306 911 Turbo

    #14 5th September 2010, 20:25

    Quote:

    Originally Posted by iw_laurence I would give the engine a bloody good service, renew anything that looks worn and do suspension/bushes/brakes. You will want a nice strong engine if your going to be giving it some stick on track....

    Engine gets serviced after every 2 track days, Brakes all new
    
    Car has been doing trackdays for last 2 years, just looking for a bit more poke