shooter mcgavin 37 Posted June 17, 2008 since fitting the 6 lump few months ago i've been looking at ways to get more airflow over the engine was thinking about rasing the bonnet at the back to let out some heat see this done on loads of fords ect is it just a case of sticking a few spacers inbetween the bonnet and the hindge any pics Share this post Link to post Share on other sites
johnnyboy666 195 1 Cars Posted June 17, 2008 i remember reading a topic on this a while back, maybe worth a search? Share this post Link to post Share on other sites
shooter mcgavin 37 Posted June 17, 2008 had a few goes in the search bar but nothing Share this post Link to post Share on other sites
sonofsam 5 Posted June 17, 2008 i remember reading a topic on this a while back, maybe worth a search? maybe this one http://forum.205gtidrivers.com/index.php?s...=raising+bonnet Cool Louvres are , well cooler Share this post Link to post Share on other sites
Baz 421 Posted June 18, 2008 (edited) Just undo the bolts at the back of the bonnet, and angle the hinges, re-tighten, should be able to get a bit of a raise on it. Plus you can take the rubber off the back edge of the bonnet to aid releasing heat/positive pressure. http://s49.photobucket.com/albums/f255/205...nt=DSC00101.jpg Edited June 18, 2008 by Baz Share this post Link to post Share on other sites
Jrod 7 Posted June 18, 2008 I've read stuff about this actually increasing the tempature, I'm sure it was Sandy who posted it but I may be wrong. Share this post Link to post Share on other sites
welshpug 1,657 Posted June 18, 2008 yep I'm sure I've heard that too, and it makes sense, why else would manufacturers seal the rear edge of the bonnet? also quite dangerous to do if you ever happen to have an engine fire, the flames can come under the rear edge of the bonnet and into the scuttle panel area, where the ventilation for the cabin is. Share this post Link to post Share on other sites
timmsy19 3 Posted June 18, 2008 plus on a wet day no matter how much your wipers are going you will have water spraying up all the time Share this post Link to post Share on other sites
Coonper 0 Posted June 18, 2008 (edited) click for good info Edited June 18, 2008 by Coonper Share this post Link to post Share on other sites
Grim.Badger 15 Posted June 18, 2008 also quite dangerous to do if you ever happen to have an engine fire, the flames can come under the rear edge of the bonnet and into the scuttle panel area, where the ventilation for the cabin is. Exactly why that rubber strip is there and why the rear of the bonnet should not be raised, same goes for a fuel leak; the last thing you want is fuel or flames being sucked into the cabin because you've raised the bonnet Share this post Link to post Share on other sites
Baz 421 Posted June 18, 2008 How is raising the bonnet going to cause flames to go into the cabin in the event of an engine bay fire? How is raising the bonnet going to cause any more water to spray up, it's such a minimal difference to standard anyway... Interesting that the bonnet temperatures were raised when the bonnet was raised, seems odd. Has anyone actually done anything with a 205 to see if it helps or not? Share this post Link to post Share on other sites
smighall 1 Posted June 18, 2008 In theory unless you have an undertray air will actually be sucked in through lifting the back of the bonnet. This should still aid cooling in theory though as it's an extra flow of cool air through the bay. Share this post Link to post Share on other sites
Baz 421 Posted June 18, 2008 Exactly, and again, in theory release any pressure build up in the engine bay that you'll also acquire without an undertray or raised bonnet. Share this post Link to post Share on other sites
1 FAT PUG 39 Posted June 18, 2008 i did it on my mates civic and the engine ran alot cooler, also he said it seem`d to go alot better aswell, must have been the cold air flowing thrugh as induction kits like cold air better Share this post Link to post Share on other sites
Jrod 7 Posted June 18, 2008 (edited) How is raising the bonnet going to cause flames to go into the cabin in the event of an engine bay fire? How is raising the bonnet going to cause any more water to spray up, it's such a minimal difference to standard anyway... Interesting that the bonnet temperatures were raised when the bonnet was raised, seems odd. Has anyone actually done anything with a 205 to see if it helps or not? We did it and it made no difference to be honest except it looked like it didn't fit propely, dropped it back down when scrutineer told us we couldnt run without the seal at the back. Edited June 18, 2008 by Jrod Share this post Link to post Share on other sites
weejimmy 1 Posted June 18, 2008 We did it and it made no difference to be honest except it looked like it didn't fit propely, dropped it back down when scrutineer told us we couldnt run without the seal at the back. i think its cause where it meets the glass its a high pressure area so dosent realy suck any air out but not high enough to push any real amount of air in either. thats what im told bout my rx7 anyway Share this post Link to post Share on other sites
shooter mcgavin 37 Posted June 18, 2008 ok so think this could be a bad idea now defo not a lot of room in there for air to flow around Share this post Link to post Share on other sites
Grim.Badger 15 Posted June 19, 2008 How is raising the bonnet going to cause flames to go into the cabin in the event of an engine bay fire? If you have an engine bay fire whilst driving the flames will flow backwards towards the car; if there is a gap at the back of the bonnet they will escape the bay here and potentially be sucked down into the scuttle panel where the intake for the cabin fan/air circulation is. Even if the flames don't reach you could be sucking in fumes and smoke. Share this post Link to post Share on other sites
welshpug 1,657 Posted June 19, 2008 the MSA ruling forbidding it would be enough for me Share this post Link to post Share on other sites
Baz 421 Posted June 19, 2008 If you have an engine bay fire whilst driving the flames will flow backwards towards the car; if there is a gap at the back of the bonnet they will escape the bay here and potentially be sucked down into the scuttle panel where the intake for the cabin fan/air circulation is. Even if the flames don't reach you could be sucking in fumes and smoke. Ahh right, now i see where you're coming from, although i doubt it would come in the cabin rather than just lick up the screen etc where the nice oxygen is tbh... Share this post Link to post Share on other sites
Baz 421 Posted June 19, 2008 the MSA ruling forbidding it would be enough for me Why's that? What form of motorsport do you do? Funny though, my grey 205 i posted earlier with a raised bonnet has passed MSA scrutineering a couple of times... May have to be another question i ask my scrute friend when i see him. Share this post Link to post Share on other sites
Jrod 7 Posted June 19, 2008 Why's that? What form of motorsport do you do? Funny though, my grey 205 i posted earlier with a raised bonnet has passed MSA scrutineering a couple of times... May have to be another question i ask my scrute friend when i see him. I guess it just depends on the scrutineer. Share this post Link to post Share on other sites
