Venting

[donbrown]

Who has vented their sled?

What is working?




I bought the SKIDOO 861805531 vent kit for $70 mailed to my door after already purchased 2018 sleds this spring.

We already vented the clutch side panels with SLP Hot Air Elimination Kit LEFT HAND SIDE For Ski-Doo Gen4 850 17-18 32-638 for $60 delivered. It allows the heat out all the vents.

We also did the CVT modification on the clutch cover providing more venting while maintaining a protective barrier if the clutch belt fails.

IMHO the SKIDOO vent kit 861805531 is awesome and really like the modification to easier remove / install the CVT cover. The SLP kit has more venting area than SKIDOOS venting.

Skidoo venting specifically directs the venting into the center of the secondary clutch. While the SLP has vents on side panel to let the heat escape.


In addition;

Put a vent on the hood between the emblem and headlights directly above the exhaust pipe.

Put a couple vents on the right side panel directly above the exhaust muffler.

Im trying to accomplish an air flow path from the front (grill) vents of the sled at front of hood thru the engine area and out the side panels.

 

[hilpulr]

Vents

What vents did you use for the hood? I also have a holdover 18 and am going to buy the Doo vent kit.

 

[donbrown]

What vents did you use for the hood? I also have a holdover 18 and am going to buy the Doo vent kit.

I went with only one vent … 2 COOL 2017-2019 MX Z TNT 850 E-TEC Ski Doo EA/ 2COOL VENT S-D GEN4 HOOD VENT PART# SK-459 . The vendor part number is 2 CSK-459 It was $35 bucks delivered.

They have vents for the entire hood including the logo being a vent and replace all the grill vents.

Did not find them on website http://2coolairvents.com/default.htm

Found on EBAY

 

[Andystoy]

My 2017 SummitX has screens in the front grill, additional air intake with screen in the left shock tower area under the oil reservoir, on the top of the left side panel and I have installed the new 2019 skidoo air intake(referred to as a vent kit).
Simple test to determine if air is flowing out or into the new doo vent kit, raise the track off the ground, hold a sheet of paper next to the hole in the clutch cover (panel door open on clutch side) and rev the engine to engage the clutches. On mine the sheet of paper is held against the cover indicating that the air wants to flow into the center of the secondary and not out. The result is cold clean air getting into the clutch and belt area even when the front grill is plugged with snow. Once the clutches are disengaged heat will flow out of the vent. JMO
The airflow (venting) on the clutch side and exhaust side is increased and keeps the snow melted off my boots. I did not cut the bottom rear of the plastic on the new clutch insert. When you compare the new versus the original it has a larger open area to allow the heat from the clutches to escape into the left foot well area.

 

[donbrown]

The SLP vent kit blows to heat out the panel vent by riders leg. Same place SKIDOO kit uses as an intake.

Skidoo vent is very precise in placing the air from outside into the center of the clutch.

 

[Ox]

Im trying to accomplish an air flow path from the front (grill) vents of the sled at front of hood thru the engine area and out the side panels.

Sounds like you are expecting to not have a white sled while out riding?



.

 

[donbrown]

Sounds like you are expecting to not have a white sled while out riding?



.

Setting up sleds like this for over a decade.


I believe this already designed into the sled. Stock has front vents going back go vent on exhaust side.

I put more vents so I don't have to open the sled panels up when the sled rests.


Its been my experience putting vents above the exhaust pipe and muffler has a benefit of removing heat from those hot spot areas and reducing this heat onto other components of the sled.

The vent mesh easily blocks snow from coming in when in the deep powder and melts from the heat exposure from the muffler and pipe.

Get a little "washing effect" into the belly of the beast.

Water cooled engine like a constant temperature and the distribution of the coolant keeps the engine block constant so not to have an unsatisfactory thermal transfer warpage.

A cooler pipe should help performance because of better resonance but I doubt the vent mod has little effect on the pipe.

My consideration on vent placement is ;

heat rises

vent as close to the heat source as possible

use Velour vents on exhaust

natural vacuum pressure to get the heat out

don't place vents above wire connectors