would u thermo wrap whole exhaust pipe? or just downpipe?

 

I just did the down pipe. I don't see a lot of use going all the way down the exhaust. Now on my motorcycles I wrap is as far as I can head to muffler is normal for me there. Keeps me from burning my legs.

 

I say if you're going to wrap somthing do the downpipe because of the oil-pan, I currently don't have anything done and i'm not worried.

 

Just the downpipe, there is no benefit by wrapping the enitre exhaust. All you want to do is just keep heat in the downpipe until it gets out of the engine bay.

 

Wrap the DP, to keep the heat in the DP, better flow and not heat-up the oil pan.

 

doesn't wrapping trap the water in and cause potential damage?

 

Just get it thermal coated. You can still get the heat reflective piece that sticks to the oil pan.

 

The wrap is there to keep oil temps down. Thermal viscosity and all that stuff...

 

Damn it Wrapping the DP has nothing to do with preventing the oil pan from heating up. That's what heat shields are for. Wrapping the DP serves the sole purpose of preventing radiant disapation of heat - thus keeping hot exhaust gasses, hot. The purpose is to maintain optimal exhaust gas velocity.

Higher exhaust gas velocity, better torque...

 

I haven't wrap my DP, oil pan is designed to withstand high amount of heat. it's also sprayed with heat resistant coating.

I would say wrap up the IC pipe right in front of the DP. That's just rubber hose that heats up your intake air.

retarded engineering, i say.

 

Stock down pipe with heat shield vs. 3" downpipe wrapped, yields 5 C less in oil temps on my car.

 

5 c is nothing, vs, all the heat that's being absorbed to the FMIC rubber pipe in front of DP.

Your DP is air cooled by the front lower air induction tray anyhow. The undertray cuts off where the DP comes down and most airs are traveled to cooled the DP and the rest of the pipe.

But the front lower FMIC pipe is shielded by the FMIC and DP, so I would change that to aluminum and wrap it.

 

i m thinking about wrapping whole exhaust on 3''.
better than nothing right?

 

Right

 

Neither. If you really want to just the downpipe.