exhaust deflector melted belly pan....?

roudyroy1

roudyroy1

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ontario GTA
installed a exhaust deflector on my sxr 700, looked under the sled today when i was hitting all the grease fitting and i see that my belly pan is all melted around the exhaust deflector! has anyone has this happen?
 

Aftermarket or oem? I have run the oem style across many model years of both pogo and trailing arm sleds and have never seen an issue with melting plastic.

My shield of choice is based off the 03 mtn viper, part #8EN-2194H-00-00. Mounts directly to the plastic and doesnt need the backer plate used on the 00-02 mtn maxes.

I would say bad install or improper placement(one in the same basically), or you have deviation in the plastics or the subframe securing the plastics. This one is a kodak moment.
 
i just made the patch but ill post pictures of how the deflector is mounted. i have the hole in the deflector lined right up with the exhaust.
 
Again, it goes back to which deflector you used. I am familiar with both the oem styles from the mtn max and mtn viper as well as the slp style.

Both the oem styles mount forward of the exhaust outlet and maybe cover 1/3 of the outlet, if that much. The slp deflector mounts forward of the outlet as well and fails in comparison to the oem design.

Dont think I have ever seen one that entirely covers the outlet. Counter productive there.
 
i used the viper one, im pretty sure you recommended it to me. not that it matters just a fun fact. will post pictures of the install tonight
 
A couple of bucks said:
Snowdad,

That p/n could obviously be adapted to use on a 94-96 Vmax then? And also, why is this one your top pick?
Click to expand...

When Yamaha introduced the deflectors in 2000(they learned from the prior year's issues with choking out in deep snow), they used a bracket that mounted to the pan and then the deflector mounted to this bracket. It was the 8ED prefix, I believe, with the same following numbers for the deflector.

In my experience, the mounting bracket required for the 8ED deflector limits the adaptability to other models. The 8EN mounts directly to the plastics and is easily modified to fit most any machine, including your pogo vmax, by simply tweaking the bracket to fit the contour.

When running the 8EN deflector on phazers, vmax's, etc(pogo sleds) one needs to inspect the deflector occasionally as the lower front ends on these sleds can sometimes make the deflector contact the ground resulting in a crushing and restricting air flow.
 
ImageUploadedByTapatalk1474903581.816769.jpg
Bringing this thread back, here is the patch I made to help deflect some of the heat. I'm the right of the photo you can see some of the melted plastic. Maybe drilling my can had something to do with it?
 
So where is the deflector? Appears to me that you basically took the stock exit hole and "tightened" it up by adding flat sheet tin to the belly pan and attaching it for the most part to the heat shield with annular spacing that should have been inside the plastic. Hot metal on hot metal melts plastic.

Since I dont see any sort of deflector, I will assume you made your plate tight to the silencer thus creating your heat source. In the better scenarios, simply sealing the flanged exhaust outlet to the existing heat shield seals things off alot better and safer.
 
deflector is on it now. that was just in the middle of making the patch. the deflector melted a hole right through the belly pan back where the metal curves down so i needed to cover it up so it wont collect snow. the exhaust hole was actually un touched surprisingly and is it the exact same size. im just trying to deflect the heat and get rid of the hot spot. ill post another picture next time im with the sled with the deflector on. then maybe we can decide if the positioning was wrong. could someone post a picture of how theres is mounted?
 
snowdad4 said:
So where is the deflector? Appears to me that you basically took the stock exit hole and "tightened" it up by adding flat sheet tin to the belly pan and attaching it for the most part to the heat shield with annular spacing that should have been inside the plastic. Hot metal on hot metal melts plastic.

Since I dont see any sort of deflector, I will assume you made your plate tight to the silencer thus creating your heat source. In the better scenarios, simply sealing the flanged exhaust outlet to the existing heat shield seals things off alot better and safer.
Click to expand...

i now have pictures of how its mounted, does it look right? *mind the patch, function over aesthetics lol*
 
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