How to avoid cooking F40 rear bumper ?

The best way to avoid it, is to do what most F40 owners do... trailer.

1st question... do you still have the cats?

 

Wouldn't the cats run hotter than straight pipes on the F40?

 

I've got straight pipes no cats on mine too. I'm guessing you have no cats otherwise your car is running waaay too rich. If you look at various pics, you will see some have their pipes inset, or flush with the bumper. That is a problem. You want them to stick out about 1 -2" iirc; I dont have mine in the garage at the moment or I would measure them. But they should stick out a bit. I've also seen picks where ppl use metal tape on the bumper, works but looks meh

 

mine, when it still had cats, but position is still the same
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set in too far
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Take the cats off. Running cats on an F40 is a BAD idea. Like literally harmful for the car. It will run better, cooler, safe and more reliably w/o cats. No joke.

 

Pictures?

Cooked as in "sooty", "crispy" or all the way melted?

 

extra crispy
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Completely misunderstood. Especially as the title of this thread referenced "BUMPER"!

What you are speaking of is the paint peeling off the oval bezel that surrounds the exhaust tips aperture. The paint flakes off the bezel on almost any F40 that is driven, and the more you drive it, the more it flakes.

BTW, even with Tubi pipes and no cats, the setting of the Tubi pipes and replacement by-pass cones which your car has - Ive seen it personally - allows extrusion of the tips by 1". However, the rear valance has a certain amount of play that is possible in setting it up upon remounting if it has been off (often not properly aligned - much discussed on the USA F40 thread, and illustrated below) and thats a possible source of the tips sitting flush with the rear panel of the valance. It may simply need to be snugged up forwards. You'll notice this when closing the rear hood and the lynch pins are not exactly aligned. I would check that before doing anything with the exhaust unit. Of course the upper hood goes out of whack also and can be adjusted - I know, we did this with one of my F40s and the net result was the bottom image...

Also, if its just the bezel thats getting toasted, well, thats what its there for, and I personally wouldn't even bother wrapping the pipes as that always looks a bit boy-racer naff IMO.


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I like the white coated look, very race-car / vintage ferrari inspired.

 

I actually LOL'ed when I read that. That's awesome.

 

Rich is soot but lean is heat. Is the bumper sooty or burnt? First I'd get a tune. Next I'd ceramic coat the entire exhaust which will keep heat in the exhaust gases but the pipes themselves will stay much cooler . Car will run better and make more HP. Next I'd shield carbon near the pipes with cool mat and the area that the pipes exit with titanium and any area that the exhaust gas touches with titanium.

Ceramic coatings come in any color including polished stainless look.

We found this worked well for us.
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or you could just get a p4/5 that should fix it

 

Bit harder that. I'd stick with a tune/cool mat/ Ceramic coating and a Titanium pass through.

 

So I've heard...

 

I've seen more then one F40 when that little black piece seemed to be replaced by a stainless steel looking one. Looked good.

 

You could also ceramic coat the surround black.

 

Flames.

 

Yeah, I read here the price is tanking!

Should get it for $17.95 by april 1st.

 

Likely less.

Bill

IMO you're running way rich. I'd start there. Running Rich can also cause undetonated fuel to burn in exhaust system which can result in unpleasant things. If you were too lean the inside of the pipes would be grey/white. I'd also check out Mike's suggestion. You of all people should know extra length is always good. Either way car will make more HP with Ceramic coating which you unlike some will actually use. (Pulling them on and off trailers doesn't require too much HP)

Sorry I missed your little one. Great to see you. Save a Glock for me.

Best

 

+1 Funny stuff.