Air plenums for throttle bodies

1. user_32315 Saxperience Post Whore Joined: Mar 2009 Uppingham, Rutland Posts: 9569 mk1 JP4'd VTR, '16 Fabia Monte Carlo

   #1 10th January 2012, 22:48

   Ive been offered a plenum for my jenvey bodies, are these worth the money or just an expensive extra? I'm guessing i would need to run an air filter with one? mainly just so it doesnt look weird and becasue the air that is being sucked in is more likely to have debris in it, compared to trumpets where air is just being sucked in from the back on the bay, i suppose it means the air supply will be colder if i paired it up to a simota style filter. However is this going to dampen the sexual sound of the bodies lol and will i just be restricting air and the benefit of colder air will just cancel out the restriction?
   
   ive seen jp's saxo which runs a plenum and simota kit, basically is it worth it or just mainly for looks?
2. AlexBp West Midlands Joined: Dec 2007 West mids Posts: 23149 Supra,civic GL

   #2 10th January 2012, 22:53

   its a decent way of fitlering the air going in
   All air has debris and dust in that will over time damage valve seats ect
   
   i personally think it would be a little restrictive 4x45mm bodies being fed by a single usually 70mm hole doesnt add up right but they make decent results
   
   Does dampen the noise down too so good for trackdays ect with low noise tolerances
   
   Basicay 6 of 1 half a dozen of the other with them for pros and cons its personal choice
3. user_32315 Saxperience Post Whore Joined: Mar 2009 Uppingham, Rutland Posts: 9569 mk1 JP4'd VTR, '16 Fabia Monte Carlo

   #3 10th January 2012, 22:59

   i am a bit worried about running no filter on the trumpets, but my housemate who is usually really anal about things like this and bugging me to get cambelt covers, has assured me not to use any filter lol
   
   i read about some guy on the 106boners about sucking in 3 grub screws and f**ked his engine which has got me worried and seeing a pic of jp's engine bay really makes me want a plenum and a simota kit, i also feel the lack of an air box leaves a big space int he bay which looks odd, beaniemoos/fishers engine bay looked good because they went all out on the engine bay, where mine isnt anything special so i think it might just tidy my bay up and give me peace of mind
   
   going to have to think about it.. im definitely doing a dyno run as soon as its mapped, so i suppose its not the end of the world to do a dyno run after and see a difference, and then sell the parts on if it is restricting...
4. user_39821 Saxperience Forum Bum Joined: Dec 2009 Uckfield, East Sussex Posts: 3362 Citroen saxo 1.4 furio

   #4 10th January 2012, 23:00

   I would always run a filter on any engine. Running open bodies is just asking for wear and tear.
   But yeah, if done well then a plenum is a good way of getting a consistent supply of air to such a restricted space.
   And 70mm is plenty big enough to run a saxo engine
5. J222JRA Saxperience Hardcore! Joined: May 2007 Posts: 16839 Saxo VTS, Westfield

   #5 10th January 2012, 23:03

   Id just buy an itg sausage filter, backing plate and get creative personally.

   3 users thanked this post: raunchz, user_35090, mangojace
6. Tom5190 Saxperience Post Whore Joined: Sep 2007 Someones Bumhole Posts: 5721 Mk2 16v Desire

   #6 10th January 2012, 23:10

   whats the volume of the plenum sam?
7. user_32315 Saxperience Post Whore Joined: Mar 2009 Uppingham, Rutland Posts: 9569 mk1 JP4'd VTR, '16 Fabia Monte Carlo

   #7 10th January 2012, 23:11

   Quote:

   Originally Posted by Tom5190 whats the volume of the plenum sam?

   not a clue yet mate, ive asked for a price, photos and details, he was very brief in his pm lol
8. MiniGibbo Saxperience Hardcore! Joined: Apr 2007 Bournemouth Posts: 15289 '04 VW Transporter.

   #8 11th January 2012, 11:11

   Its stupid to run open trumpets... in the rest of the car world it's not even an option to run without a filter out of comman sence
   
   Get a well designed plenum.
   
   

   1 user thanked this post: rey
9. user_32315 Saxperience Post Whore Joined: Mar 2009 Uppingham, Rutland Posts: 9569 mk1 JP4'd VTR, '16 Fabia Monte Carlo

   #9 11th January 2012, 14:24

   this is the plenum
   http://www.106owners.co.uk/forums/sh...COE&highlight=
   came off this sc'd itb gti
   
   
   im gonna sound stupid hear but how the hell does it bolt to the bodies?? it bolts in place of the trumpets, but how on earth would you gain access??