mos 1 Posted February 4, 2007 hi, the biggest problem i am facing with my new s16 and throttle bodies set up is under bonnet temps, this car is road going everyday transport if i get stuck in rush hour traffic my under bonnet air temps can soar to near 80c!!! on my other car running twin carbs i have always manged to limit this by lowering the rad on brackets but thats an 8 valve and this approach is not possible on my s16 engine as the power steering pump etc is in the way. td rad wont fit either with out hitting the pipe work getting in the way and i really dont want to cut the lower front bracing panel to move the rad down like that. i am left with two options, fit the radtec rad that robsbc and dazc have but i am not entirely sure if this will clear the pump either as its a thicker rad and if all the extra thickness projects towards the engine its bacially the same senario as the td rad. plus radtec have quoted me near £500 so i am considering other options first airboxes spring to mind i pretty sure this would also reduce inlet temps if i run a cold air feed from say under the front bumper straight to the airbox i dont mind trimming the slam panel to make one fit a little but what can i get and where from i am running 60mm trumpets at the moment so is there a box i can buy that will accomodate these. if not how detrimetal would 45mm trumpets be to my torque/bhp curves, in fact would running an airbox itself with my existing 60mm trumpets affect my performance any ideas/comments/advice on this folks i am not too well up on airboxes etc thanks mark Share this post Link to post Share on other sites
mos 1 Posted February 5, 2007 Hi, surely some people are running airboxes or at least can give me a bit of advice on the subject i know pipercross do some, anyone tried any of theres thanks mark Share this post Link to post Share on other sites
bren_1.3 1 Posted February 5, 2007 (edited) the biggest problem i am facing with my new s16 and throttle bodies set up is under bonnet temps, this car is road going everyday transportif i get stuck in rush hour traffic my under bonnet air temps can soar to near 80c!!! if your struggling in traffic then what about fitting a second rad fan from a diesel motor on a manual switch? EDIT: also, how about raising the rear of the bonnet and removing the rubber strip that sits on the underneath of the bonnet? to answer your airbox question, theyre not cheap by any means, and if space is at a premium, its not really the best option. i run a carbon airbox from an ex-btcc honda accord. but my carbs face the wrong way. being on a TU engine. Edited February 5, 2007 by brens_1.9_wide_arch Share this post Link to post Share on other sites
Robsbc 0 1 Cars Posted February 5, 2007 (edited) Mark, The extra thickness of the RADTEC Rad is towards the front of the car. The rear face of the rad is in the same position as the original rad. If it was towards the engine, me and Daz would never be able to get our oil filters out which are fitted onto a mocal sandwhich plate. Stew205 also had a RADTEC rad and he cut his lower cross member out and push the rad further forward. Don't why he did this but he also made a airbox for it. RADTEC check this for you if you leave the car with them for any fitment problems as that is what Daz did before I got my rad. Matt @ QEP had some airbox's not sure if they are for sale. Your getting 80 degrees at the moment? Never seen that sort of temp even during the summer months...Might be around 40 max during traffic then drops down quickly enough when on the move... Rob Edited February 5, 2007 by Robsbc Share this post Link to post Share on other sites
mos 1 Posted February 5, 2007 hi rob its never actually hit 80 but its been close high 70's it when i am sat running the car playing with setting in the kms for say 20 mins once the car is already at operating temp funny thing is the skip brown 72degree thermostat keeps water temps under conntrol and the fan never really cuts in i have had situations wher the under bonnet air and the coolant temp have nearly been in equalibrium!!! good news about the radterc going forward but i am just looking for a slightly cheaper sollution than near £500 does anyone actually know if fitting an airbox will lower the air temp, surely it must but equally important is will an airbox effect performance through the rev range i am tempted by one of the pipercross airbox demon tweeks sell for about £150 or so but at 60mm my trumpts are a little long for the boxes and i dont really want to change to 45mm trumpets as i think this will be detrimental to performance mid range performance and send by peak torque higher up the rev range any thoughts on this anyone thanks mark Share this post Link to post Share on other sites
benlilly 0 Posted February 5, 2007 (edited) Hi Mark, Lumenition have a universal airbox here http://www.lumenition.com/airbox.pdf Looks a little on the large size though. There are also these guys http://www.reverie.ltd.uk/shop/products.php?g1=ff77b3 Bit pricy though. Also, I'm sure I remember someone on here running an airbox sourced from an Elise. Cheers, Ben Edited February 5, 2007 by benlilly Share this post Link to post Share on other sites
Robsbc 0 1 Cars Posted February 5, 2007 (edited) Your unlucky me and Darren paid £275 each... Cheaper option is to cut the lower slam panel where the rad sits on. Fit custom bracket (can weld or bolt) and move standard rad forward and downwards. Then fit a universal hose for the bottom hose. Jon Murgie used a univeral hose. Will cost less than a airbox and Radtec soltion... Rob P.S Jon Murgie had the airbox for an Elise. Edited February 5, 2007 by Robsbc Share this post Link to post Share on other sites
smckeown 1 Posted February 5, 2007 surely the main purpose of an airbox is to reduce noise. And furthermore is it heat soak from the rad causing the high inlet temps ? If so an airbox might not be the complete solution. Unless its an airbox combined with insulation at the same time (which is what I have planned) Have you seen heat shields that sit above the rad to toop heat soak, I believe des-developments have dome one, but seems fairly straight forward in design Share this post Link to post Share on other sites
Daz_C 8 1 Cars Posted February 5, 2007 Send me a PM with your phone number I'm sure I can knock a fair wack off that price Who did you speak to ? Stew has pushed his right forward between the headlight panels much further than mine but as said he has modified the lower crossmember. I had terrible problems before running my carbs when in traffic for long durations of time. Its all good now though The way I see it is that the standard radiator is blocking alot of air flow from getting around the engine bay so once its hot in there it takes a fair distance of driving to get that back down. The radiator we had built cures this problem totally as its leaving vertually the whole Grill Area clear for the air to pass through without restriction, and the radiator is also getting its fair amount of air to aid cooling. IMO Share this post Link to post Share on other sites
Doof 11 Posted February 5, 2007 (edited) Something i read in A Graham Bell's book "Forced Induction Tuning" mentioned that when using an airbox or manifold for that matter it can be beneficial to have inlets at both sides, rather than just one. Can't be that hard surely. Edited February 5, 2007 by Doof Share this post Link to post Share on other sites
Dj_mini 7 Posted February 5, 2007 Send me a PM with your phone number I'm sure I can knock a fair wack off that price Wish you would have said that before i ordered mine week before last (should be here wens) there coment was "there is no budge in the price at all unless you can place 5 orders" i even tryed the old im a member of the 205drivers does that mean i can have a discount but no joy Share this post Link to post Share on other sites
Swazy 0 1 Cars Posted February 5, 2007 By the way, wich intake system would you prefer by driving an mi16 into Peugeot 205? As some people here know, i mounted an inlet manifold from gti-6, also i use the standard mi airflowmeter. I recieved a standard mi16 airbox as a gift, but there so less space to mount all these goodies. So what would u do? Share this post Link to post Share on other sites
Guest BrainFluid Posted February 9, 2007 if your struggling in traffic then what about fitting a second rad fan from a diesel motor on a manual switch? Sounds like the cheapest and simplest solution to me...Would only take an afternoon and shouldnt cost more than £20 for the extra fan, some wire, a relay and a dash swith. Share this post Link to post Share on other sites
Powers 13 Posted February 9, 2007 That radiator price is ridiculous and dam right outrageous. I have been pricing up a custom radiator from a local ali fabricator and I am getting quotes around £225, for a similar size as the original but twice as thick (2 core). Just out of interest why is the Radtec radiator £500? Share this post Link to post Share on other sites
Dj_mini 7 Posted February 9, 2007 That radiator price is ridiculous and dam right outrageous. I have been pricing up a custom radiator from a local ali fabricator and I am getting quotes around £225, for a similar size as the original but twice as thick (2 core).Just out of interest why is the Radtec radiator £500? Its not £500 its £380 inc the fan thats a 64mm core iirc? But im still waiting for mine to arrive Share this post Link to post Share on other sites
