Yamaha Grizzly Forum banner

1 - 9 of 9 Posts

·
Registered
Joined
·
6 Posts
Discussion Starter #1
Hello all, new to the group. I have an '04 grizzly and have put about 30 hours on it so far. There are two things I have noticed. The first is that it runs real hot. I live in the Charlotte, NC area and it has been 70 to 80 degrees lately. But when you ride and then kill it by the stop switch the fan continues to run for 25 minutes and the heat just pours out from the engine area and seat. The second is that when it is hot and you shut it down for a few minutes to take a break, it vapor locks and the engine spits and sputters for 10 minutes or so. Then it clears up and runs great. Has anyone else experienced this?
 

·
Registered
Joined
·
56 Posts
Hey Roadhazard!

From the information I got the 2004 Grizz was suppose to have all of the heat problems that have plagued the earlier ones solved.

They changed out a lot on my 2002 Grizz on the recall, and it has not sputterd out or died like it had done before on the creek crossing`s or just hard riding on the trails.

Feel`s like I could take-on the world, or just any Polaris,or Zuzuki that comes within taking names distance.
 

·
Registered
Joined
·
7 Posts
maybe change the grade of oil.i use 20-50 castrol for the summer and 10-30 castrol for the winter.
 

·
Premium Member
Joined
·
620 Posts
Oil isn't gonna help. You have shield the fuel system from the heat and get the heat out of the engine bay.

Go buy a couple of those Heat Tiles. Your dealer can get 'em for you from the Parts Unlimited catalog. They're about $15 each I think and they're adhestive and stick to the underside of your gas tank.

Then get one of those small spark plug wire protector boots that protects plug wires on hot rods from header heat... I think they're called Fire Sleeves and are usually sold in packs of two. Put one over the fuel line from the carb to the tank.

Since you have an '04 and already have the vented side panels, these two things SHOULD cure the problem. If not, then send your header pipe off to Jet Hot to be coated and that should do it. I've done all three to my '02, plus the '04 side panels, and it hasn't vaporlocked once since.

Rob
 

·
Registered
Joined
·
6 Posts
Discussion Starter #6
[Go buy a couple of those Heat Tiles. Your dealer can get 'em for you from the Parts Unlimited catalog. They're about $15 each I think and they're adhestive and stick to the underside of your gas tank]

Hey Rob,
Heat tiles? Is that like a heat sheild of some sort? I guess what I am saying is...will the dealer know what they are? Thanks for the response, Doug
 

·
Registered
Joined
·
16 Posts
Hey RoadHazard!
Some pretty good advise given already, I noticed in your pics that you ride in the mud. You may already be doing this, but if not I also have an 04 and have to say that one of the most important things to clean after you get back is the radiator. Muddy water plugs it up really quickly as the fins are spaced closely together. Its not the greatest setup for cleaning, basically the garden hose throught the front grill. Put a trouble light in behind and look through the front to check for good airflow. This will make a huge difference in the cooling capacity. Highlifter makes an aftermarket rad and fan for the Grizz specifically for this reason. There was an article in Dirt Wheels not to long ago about it. Might be something to consider if some of the cheaper modifications do not work first.
Good luck!
James
 

·
Registered
Joined
·
6 Posts
Discussion Starter #8
Thanks James, Yes I just figured that out yesterday when I quit riding and decided to give my griz a good wash down. Stricktly by accident the hose sprayed up torwards the radiator and even though it looked clean, mud and water ran out for 10 minutes. I was amazed. I read a post awhile back about someone who wanted to put rubber mats behind the front wheels to keep this from happening but I guess I just looked and always saw the fins clean and assumed.
I guess I will look into it also. Thanks for all the replys. Doug
 

·
Registered
Joined
·
56 Posts
Roadhazard!

You need to wash from the back of the radiator toward the front with nothing stronger than a garden hose with a spray nozzle on it.You will be surprised at what will come out! Grass seeds,leaves.twigs that cannot be washed out except from opposite way they got in.
 
1 - 9 of 9 Posts
Top