Bonnet lift

[Adambul]

My car doesn’t have the front spoiler fitted and suffers from a bit of bonnet lift, which can be quite concerning at higher speeds. How effective are the front spoilers at actually stopping the bonnet lift? Are they worth fitting?
Thanks for any advise

[TheRainMaker]

Mine got ripped off, didn’t make any difference to anything tbh.

[Byker28i]

They stop the bonnet lifting at motorway speeds. Once you get over about 130, they stop the front end going very light on the steering.
They are definitely worth having, you can easily make your own

[Juddder]

I think there's also a whole debate as to which way round you should mount them?

I have mine mounted slanting towards the back of the car which seems logical, and had it custom made by another member on here a few years ago

I actually have a spare which I had made at the same time, just in case the London speed bumps decided to kill the first one, but I've never used it so far so might be able to part with that if you can't find one easily?

- EDIT -

Found the link from 2002

"Just talking spoilers on Saturday night, as you do, and discovered that some people have theirs fitted what appears to be the wrong way round! I made up a replacement for my cerby and asked the guys to fit it while they had it on the ramp - course they fitted it the wrong way round - I think!!
Should the lower end be towards the back of the car?(the way mine is). Or should it be more like a snow plough?
Anyone know/care?"

https://www.pistonheads.com/gassing/topic.asp?h=0&...

Edited by Juddder on Thursday 26th April 11:02

[Byker28i]

We had a huge discussion on this about 8-10 years ago. Some have the slant facing backwards, which appears logical but mines fitted with the slant forwards (snowplough) and the car has always felt very stable at very high speeds, the steering doesn't go light.

[Adambul]

On further investigation I think my problem is probably worse due to there being no front under tray fitted to my car. I think I’ll buy and install one before I go for a spoiler, I can always fit the spoiler if the under tray doesn’t solve things

[pmessling]

If you have any problem finding under trays or spoilers send me a message.

[1485]

the front lip spoiler has absolutely nothing to do with stability of the car at speed,it does however have a reason for being there! when the car is hot the hot generated by the radiator and the engine has a habit of stalling in the engine compartment, to solve this the lip spoiler (or has it should be named AIR spoiler) was fitted to create a different air pressure under the car thus allowing stalled hot air to escape under the car.

[gruffalo]

1485 said:

the front lip spoiler has absolutely nothing to do with stability of the car at speed,it does however have a reason for being there! when the car is hot the hot generated by the radiator and the engine has a habit of stalling in the engine compartment, to solve this the lip spoiler (or has it should be named AIR spoiler) was fitted to create a different air pressure under the car thus allowing stalled hot air to escape under the car.

Could you definitely confirm which way round it should be fitted?

[1485]

Yes i can, it faces with the slant to the REAR of the car.

[Juddder]

1485 said:

Yes i can, it faces with the slant to the REAR of the car.

Great - so this was how the team at a well known TVR specialist garage fitted mine - which I guess from the above is correct?

[TwinKam]

The way I remember it is that the Cerb is 'streamlined' or acting like a palette knife, whereas the Chim one is more like a snow plough.

[Jhonno]

Juddder said:

1485 said:

Yes i can, it faces with the slant to the REAR of the car.

Great - so this was how the team at a well known TVR specialist garage fitted mine - which I guess from the above is correct?

That is correct..

[Mr Cerbera]

Hi

This is the correct fitment....



HTH

[gruffalo]

1485 said:

Yes i can, it faces with the slant to the REAR of the car.

Thank you!

[Adambul]

New spoiler fitted and replacement engine under tray, definitely made the bonnet more stable at speed and I’m happier as the car is now as it should be. Thanks to Peter Essling for making the spoiler and pointing me in the direction of a secondhand under-tray.

[Byker28i]

Byker28i said:

We had a huge discussion on this about 8-10 years ago. Some have the slant facing backwards, which appears logical but mines fitted with the slant forwards (snowplough) and the car has always felt very stable at very high speeds, the steering doesn't go light.

I looked today, mines actually the othe way around, slant backward. Wonder when that changed : D