New Tubi Style 355 Evolution exhaust system

I'm not normally a poster on the 355 forums but I stumbled across this video clip recently of a capristo system:

http://www.youtube.com/watch?v=_qtd2yxvVR0

Apologies if it's a repost (which I'm sure it is) but to those owners who have this installed, I salute you.

 

Heat radiating towards the clutch has never been a problem. The insulating material as shown in the pics above is the result of normal wear and tear over many years. Heat rises and when your moving, the clutch is naturaly cooled by the air moving by it. The only cars that are the exception are the challenge cars and they have added the scoop to pick up the air and move it around the clutch housing more than the road 355 because the Challenge cars are very very hard on the clutch. If you are worried about heat then make sure you eliminate the cats and bypass valve and make sure you have insulated headers and a challenge grill. Anything else is really just a waste of time and money unless you are tracking the car hard and frequently. Also make sure that your car is not running too lean. That alone will make the care run much higher in temps and shorten the engine life dramaticaly

 

There is NEVER a need to apologise for a repost of that quality!

 

I have not said that heat radiating towards the clutch has been a "problem." I do know that the life of many items, parts, devices, substances etc. is shortened the higher the heat they are exposed to. If I'm reducing the heat level it may very well last longer. Maybe one day, maybe six months maybe 5,000 miles maybe nothing at all but I'll take that "risk." Maybe the flywheel grease will last longer. Who knows?

Of course I realize there is normal wear and tear on the heat shield shown. I want more heat shielding. Even if I had a brand new OEM heat shield to install.

Not sure how hard the Challenge cars are on their clutches. Typically the people driving these cars make cleaner, quicker shifts (less heat generation from less clutch slippage). I suspect the Challenge clutch heat shield is there because the cars are producing much more power (heat) on average than the street version 355. I don't mean to say they are producing a lot more maximum horsepower but rather they are producing a higher average HP because of higher average throttle openings and rpms and thus more heat. I'm not aware of a cooling scoop being added for the Challenge clutch. There is an added scoop and radiator for the gearbox (on '99 Challenge cars).

Cats. are gone on my car, I have a Challenge grille, headers and test pipes have been ceramic coated. I will not eliminate the by-pass valve. Some very knowledgeable people recommend against it.

I agree that running lean can be a big problem and I hope to install AFR guages to keep an eye on this.

Finally, the vast majority of 355's worldwide, I'm sure, are not operated in the desert. I'm in the Mojave Desert. Gets crazy hot here.

I don't believe for a moment I've wasted time or money.

 

Just to add some clarification. Protecting the actual clutch itself from heat wasn't the problem. That heat shield/scoop(shielding the heat and drawing in air) on the the rear of the CH clutch cover(not the same as pictured above) was there for 3 reasons to cool the bearing that is inside the little cap with the "horsey" on it, to cool the TO bearing and cool the kluber grease. The CH cars have 16mm holes drilled around the clutch cover, area where the fly wheel is located, to aid in cooling the grease by allowing more air to be drawn in and flow out. There are also holes drilled into that bearing cover cap.
There is no scoop for the gear box cooler just a cooler added in the drivers side front bumper area and ducted by the driving light hole on the drivers side and plumbed to the gearbox via braided lines. This was part of the update kit in '98 and installed on all 355CH cars that were in the series.
Anything that reduces stored heat in a 355 is a huge benefit. There are even fiberglass shields painted silver around the air boxes on the CH cars.
On a side note the shield on the clutch cover was installed at the factory on some road cars too but there doesn't seem to be a rhyme or reason as to which cars got it and which didn't. Hope this helps

 

Good info. Thanks

 

Thought I'd add this to the lot.
Thanks for the link, still.

Ferrari 355. De-cat Tubi v De-cat Capristo:

http://www.youtube.com/user/minatormyth#p/u/3/-SGOyaw7DTg

 

It has been posted here before although, it seems to me, the Youtube poster added more commentary. For example he mentions both cars rev'ed to redline. Earlier I had pointed out that it didn't sound like the Tubi equipped car was rev'ed as high. Now it's stated they both went to redline. Must be mighty accurate feet in those cars because I can't (maybe it's just me) hear them hitting the rev limiter. So... very precise feet to just be able to hit 8500 rpm and not higher ;-)