saw this mk1 derby in me golf+ mag i got yesterday n i i think looks cool but some people i know dont agree n think looks like you just crashed it!!!

i arrowed it out for you all!!! what you think?!?! all oppinoins welcome!!

Well its normally done for a reason, To aid cooling. It works either by leting air flow from the front to rear then over the screen or air flowing over the bonnet sucks air out of the bonnet area. Its not really done to look good.

that is how ma mini was it was mainly to aid cooling.

that is how ma mini was it was mainly to aid cooling.

I guess not having windows helps as well

haha that is exactly how it was for 6 months when it was in the garage I've removed all the shitty bodged filler that was ALL OVER it form the last owner it got beaten p[roperly and loead loaded so no filler :p WOOP WOOP

yea i knew it was for aiding cooling, guy at my work was thinking doing for his 1.8t golf but i thought looked kinder cool and could help get air inside the engine bay lol

if you ask me i think you should apply the same rule as for bonnet vents. if you have a big power engine that needs it, fine. but if you dont have a big power engine in need of extra cooling, forget about it.

I think it looks stupid. Looks like you have had a crash or dont know how to close your bonnet. As above fairplay if you have some sick engine that needs cooling. I cant see how anyone can think they make a car look 'cool'

That bird is hot

Well its normally done for a reason, To aid cooling. It works either by leting air flow from the front to rear then over the screen or air flowing over the bonnet sucks air out of the bonnet area. Its not really done to look good.

I've been thinking about doing this lately on my mk1. Not for aesthetic reason but because I'll be running twin 40s, and as you all know on short block engines they sit at the back rather than the front like tall block golfs etc. I have removed the scuttle panel and will have near enough nothing left in there (battery relocated etc etc) so theres a fair amount of free space. My thinking in tilting the bonnet up was that the air would flow over the bonnet and then some get sucked down into the bonnet, hopefully providing the carbs with some nice cold air.

After reading your comment Max it occured to me that this mod might be to increase the through flow of the air, as opposed to sucking more in. Any ideas anyone?

That bird is hot

i was trying to draw my eyes away aswell

This is something I couldn't never work out. And I will be doing some testing when I get my ACT Gauge. Surely the heat from the manifold is now completely flowing from front to back meaning your are warming the inlet manifold? I know this happens to a certain degree although any warm air that used to leave from the bottom of the car is no longer going to do that.

Well its normally done for a reason, To aid cooling. It works either by leting air flow from the front to rear then over the screen or air flowing over the bonnet sucks air out of the bonnet area. Its not really done to look good.

I've been thinking about doing this lately on my mk1. Not for aesthetic reason but because I'll be running twin 40s, and as you all know on short block engines they sit at the back rather than the front like tall block golfs etc. I have removed the scuttle panel and will have near enough nothing left in there (battery relocated etc etc) so theres a fair amount of free space. My thinking in tilting the bonnet up was that the air would flow over the bonnet and then some get sucked down into the bonnet, hopefully providing the carbs with some nice cold air.

After reading your comment Max it occured to me that this mod might be to increase the through flow of the air, as opposed to sucking more in. Any ideas anyone?

I think what you say about getting cold air down to the rear of the engine would work

http://www.autospeed.com/cms/A_2162/article.html

As the area above the rear of the bonnet is a High Pressure area and the area below the rear of the bonnet is normally a low pressure area air will flow down. Which I guess why manufactures put the cold air vents there for the ventilation system.

Thanks for that link mate, much help :)

what bonnet mod? all i can see is that brunette

My MK2 has its bonnet raised at the back,like that MK1 in the mag. Its not by as much,probably not more than 15mm,but it definately helped the bike carbs. It should be realised that the back edge of the bonnet is still sealed - as I've added a seal to the bonnet. But this was so the interior ventilation compartment is still isolated from engine smells/gases. It just opens up the sides a little.

My MK2 has its bonnet raised at the back,like that MK1 in the mag. Its not by as much,probably not more than 15mm,but it definately helped the bike carbs. It should be realised that the back edge of the bonnet is still sealed - as I've added a seal to the bonnet. But this was so the interior ventilation compartment is still isolated from engine smells/gases. It just opens up the sides a little.

you got any pics and advise on how you raised it dude??

lol might try it on my GT

i was thinking on simply making a plate that bolts on the the hing and then the bonnet bolts to the plate!! but dunno what angle to do on the plate for the bolt locatores!! or how big to make it so has a good lift on it!!

You just loosen the two 10mm bolts on the bonnet hinge,lift the corner of the bonnet,tighten the bolts. Same the other side. Simple. But you must ensure the bonnet is straight and the latch fits properly. You dont want the bonnet flipping up at 60mph,i assure you. Plus you will need to modify that compartment seal,as few ever get to explain how carbon monoxide poisoning affected them.

how much lift that give you?? i didnt think was any adjustment in the bolts!!! and what this carbon monoxide poisoning about??

A friend has this mod on a mk2 he bought. On the bonnet hinges the screw furthest toward the cabin has been removed, then the bonnet tilted into position )with the other screw loose ofcourse, then the hole with the screw removed filled with weld and a couple of tacks on the otherside between the bonnet and hinge to keep it in place. Looks tidy ground back and seems to do the trick. Probably what I'd be doing, though I'm tempted to devise a bolt method like Mikey so it can be adjusted or just layed flat in the original position.

i rememebr seeing in one of the performance ofrd mags dad gets that sierra cossies e.t.c have alloy brackets made and you can buy them.. they are a kinda angled block taht bolts too the std hinge and the bonnet, that coudl easily be nocked up bya machine shop if you know what you want.

ahh cool cool any ideas what there called?? like bonnet jack or somthing! yea tis a common ford thing to do i heard!!

just found this lil thing saying use spacers!! but polo bonnets bolt on the side!! so I'm still thinking a brace reloacting the bolts it a way!!

http://forum.picantoclub.com/index.php?showtopic=908