engine heat

I still have blisters on my right calf from a brave ride in shorts over a month ago. I perceive no difference in heat between stock exhaust vs slipon (slipons remove cats on these bikes)
The only thing that cools it down significantly is when you ride through a pop up Florida thunderstorm.

Take a close look at the body work of the 2020+ Panigale models, Ducati maximized the aerodynamics and they look extreme.

DucatiKev said:

I perceive no difference in heat between stock exhaust vs slipon (slipons remove cats on these bikes)

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which slip-on are you running?

Zard. Here’s a cold start

craig bush said:

Do the aftermarket exhausts significantly reduce radiated heat? If so, is it mostly due to eliminating the cat or re-routing the back headers (half vs full system)?

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if heat management (i.e. reduction) is the only improvement you are after, why pay 2k++ if heat resistant clothing do the (better) job for just $100?...

RdashP said:

if heat management (i.e. reduction) is the only improvement you are after, why pay 2k++ if heat resistant clothing do the (better) job for just $100?...

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Well, I can tell you that my riding jeans (~$150) still can not eliminate the heat as much as a full Akra header could. Ultimately, the culprit is in the OEM pipe vs. Titanium pipe, lets not kid ourselves.

My ceramic coated header pipes reduce heat just fine.



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RM3851 said:

Well, I can tell you that my riding jeans (~$150) still can not eliminate the heat as much as a full Akra header could.

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Interesting. What type and how many layers of fabric does your clothing consist of in the ‘hot zones’ (upper leg, knee cavities)?

With my moto jeans of woven Kevlar (Aramide based) with as a 2nd layer a LenzingFR (Viscose/Aramide/Carbon based) legging hardly any heat sensation in those areas anymore. When wearing leathers with an ordinary polyester legging underneath (to just wig sweat away), no heat issues either. not even on hot days and still running with standard exhaust and piping...

RdashP said:

Interesting. What type and how many layers of fabric does your clothing consist of in the ‘hot zones’ (upper leg, knee cavities)?

With my moto jeans of woven Kevlar (Aramide based) with as a 2nd layer a LenzingFR (Viscose/Aramide/Carbon based) legging hardly any heat sensation in those areas anymore. When wearing leathers with an ordinary polyester legging underneath (to just wig sweat away), no heat issues either. not even on hot days and still running with standard exhaust and piping...

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Just the jeans, no 2nd layer. Well, not counting the underwear of course. I know I could layer up, but at that point Id rather be in a suit. Either way, personally eliminating the source of the heat is my primary goal.

RM3851 said:

personally eliminating the source of the heat is my primary goal.

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go ePanigale?
Combustion engines - the real source - will never run cool to the touch, especially the race spec ones.

Compared to other bikes/brands, we certainly can improve on Ducati’s ‘design-flaws’ / ‘economic choices’ to manage heat better for our V2/4. For me, It’s just a matter of willingness to throw $$ at this ‘problem’.

Since (a magnitude) more $$$$ doesn’t necessary equate to curing these symptoms (better) if you’re just after healthier heat management and not also after more bling a/o power.

RdashP said:

go ePanigale?
Combustion engines - the real source - will never run cool to the touch, especially the race spec ones.

Compared to other bikes/brands, we certainly can improve on Ducati’s ‘design-flaws’ / ‘economic choices’ to manage heat better for our V2/4. For me, It’s just a matter of willingness to throw $$ at this ‘problem’.

Since (a magnitude) more $$$$ doesn’t necessary equate to curing these symptoms (better) if you’re just after healthier heat management and not also after more bling a/o power.

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I already have the slip on. I could not imagine riding a stock exhaust bike, that is for sure. For me it is not the bling I am after, rather a complete system, that can ultimately provide the ultimate product/scenario; the exhaust flow, the heat management, I think it is lighter too etc.

We all have our "goals" we are after. For instance, I am probably the only person on this planet who despises carbon; in any way, shape or form. Do I like the fact Akra sends out their headers with that awful shiny carbon cover? Nope, I sure do not.

But I digress. Riding quite often (3-4-5 days a week), only a mad man would want to jump in a one piece suit every time. Sometimes you just wanna cruise by the beach and be comfortable. Cue - riding jeans. If I do that while sitting on the Akra header, my arse might feel better than doing the same sitting on the stock surface-of-the-sun-heat-provided radiating pipe.

ArcticWhite said:

My ceramic coated header pipes reduce heat just fine.

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Perhaps you could take some temp readings with the exhaust installed.
There are several YouTube videos that can provide baseline temperatures.
It will be encouraging to see the difference.

We are on the same page.

Although it will be a winter project, I am going to ceramic coat my stock exhaust. If and when I get a full system, in the fullness of time, I’ll ceramic coat that as well. Inside and outside or course, standard. When I say "I'll do it" I mean I'll pay a pro shop to apply a high-temp ceramic coating, much in the same way powder coating is applied. LOL. I've done it before with great results.

Automotive applications can result in a reduction in ambient heat of up to 30% in my experience. There are higher cost ceramic products that claim to reduce ambient heat up to 65%. This may be true, but I cannot comment.

For a V4x at full operating temperature in traffic... stopped at a long light... even a decrease of 10% (+/- 20d F) around the legs would be a welcome event. More would be a bonus.

As you have noted, heat is contained in the pipe, thereby maintaining gas flow velocity which, in turn increases engine efficiency. I’ve not done a back to back dyno test in my applications, but the claim is for increased HP. I’ve never done it for the HP, just for the heat reduction and, frankly, the cosmetic improvement.

These hot bikes are perfect candidates.
When I do it, I’ll do before and after heat readings. Not sure if I’ll be able to do before and after dyno. Unlikely.

If anyone else beats me to implementation, a posting of before/after temp results would be appreciated by everyone, I’m sure.

Be well!

UPDATE - here's an interesting link: Dyno Performance - NitroPlate High Performance Ceramic Coatings
decreases in ambient temp of about 25%
increases in HP of 2% and TQ of 1.5%

It will be interesting to see if this benefit found under the hood of a performance car translates into a meaningful benefit on a Ducati V4x

The heat is not a problem (unless I ride it when it's high 90's to 100F). I am curious if anyone has taken the plastic engine covers off or replaced them with carbon. If so did it make a difference as to how the heat came off?

As others have mentioned I feel it mostly on the left side where that portion of the engine sticks out a little farther.

I installed these HKMP7's V4S Journal

I didn't notice any difference at all. My bike has always been hot on the right side of the motor.

I installed these HKMP7's V4S Journal

I didn't notice any difference at all. My bike has always been hot on the right side of the motor.
[/QUOTE]

Thank You - The larger one is what I was thinking about as that leg gets the hottest. Again I think it is because the rear cylinder pushes out on the side.

There have been lots of debates about heat on this forum since it started. I will just pass on my experience. I have the first 1199S which is a 2012. There were no engine head covers back then. On hot days in summer my right leg under the thigh area would get very hot. I would stick my heel on the end of the footpeg to create an air gap. It was only a problem under 100 kph and then airflow would do its thing and cool the engine. When I got the full Ti akrapovic system it made no difference to heat. It still got hot just sounded better. Exhaust gas flowing more freely makes no difference to how hot the bike feels.

Ever since I got the bike I wear leather Dainese pants to protect against the heat. In summer on an over 35 deg celsius day it could still get uncomfortable when stuck in traffic or slow riding. Firefighters traditionally (not anymore as there are newer materials available) have used woollen fabric for their uniforms to protect from heat. Fire blankets used to be made from wool. So eventually and this was only last year I got a seamstress to put a woollen patch under the thigh on both sides of my leather pants and then put the same black layer over the top. $120 later and presto it worked like a treat. No more heat radiating from wherever it was coming from. I just got an old blanket, the lady folded it over so it was two layers and sewed it into the leather and put a leather patch on it. At the same time she made leather patches for the knee sliders area to cover up the velcro. I do not use the knee sliders riding on the road. MM I am not.

This solution means that the leathers are ok to wear on a hot day but at the exact point where the heat used to hit I now have two layers of leather and two layers of wool blanket. I wish I had done it years earlier.

First picture shows the area where the wool blanket was sown in. It is the area in the centre of the photo.


Second pic shows the leather knew slider velcro covers. The grey is reflective.

Thanks for the tip. It is not an issue as the bike is mostly used for track days, but occasionally when I do street rides in 90+F days it gets warm. I was also looking for an excuse to add some carbon or take some plastic off lol.

There's no one-stop solution to the Panigale heat issue.
However, many little things do add-up to mitigate the heat:
1) Leather pants preferably with base layer (riding jeans just don't cut it).
2) DP Racing or Comfort seat does help.
3) Panigale heat shield inserts do help.
3) Stay away from stop-n-go situations.
4) Shut off your engine when stuck in traffic.
5) 60 mph or above to blow-out the radiation.
6) Ride the Panigale in cooler temperatures or ride your other bike if so fortunate.

engines are hot, something to do with combusting the gasoline then the wheels move makes that ice cold frap all the sweeeeeter when you get it tho AMIRIGGHHHTTTTBOOOYYYSSSSS!?!?!?!

KarlKani said:

engines are hot, something to do with combusting the gasoline then the wheels move makes that ice cold frap all the sweeeeeter when you get it tho AMIRIGGHHHTTTTBOOOYYYSSSSS!?!?!?!

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Nice reading you again bro. Did you trade that 959 track weapon for a V2?

No not yet, honestly in no hurry my bike is working so good!