HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
Woods_Weapon

Filter backfire guard

11 posts in this topic

I just got my new 650 broken in and have a quick question which I couldn't find the answer to in the archives. I installed UNI air filter that came with a "frame" that allowed me to take out the restirictive CA backfire guard (the metal myst between the filter and intake tract). Do you guys run both guards or do you take the stock one out when uncorking? I ordered a "high flow" guard from XR's only and it just doesn't fit too well and wanna toss it.

Share this post


Link to post
Share on other sites

WW,

A while ago I installed the UNI (when they first came out) and took out my screen and singed the filter pretty good, no fire though. Since then I believe UNI is using different foam that is 'a little' more flame retardent. Since then though I've always run the backfire screen.

Share this post


Link to post
Share on other sites

I bought the xrs only hi flow screen also it fits alot better since I modified it alittle, just had cut some material with some metal snips!

Share this post


Link to post
Share on other sites

Thanks guys,

Yeah, burying a fried pig would be tough, especially at such a young age! I guess I'll just tin snip the XRs only one.

Share this post


Link to post
Share on other sites

They sell the material that the XRs Only screen is made of at the hardware store. You can cut one out using tin snips and your old screen as a pattern.

Share this post


Link to post
Share on other sites

I run the stock screen with no problems. Pigs do backfire in the air box if the carb back flows fuel into the box. It does happen if you leave the stock carb float level at stock settings. That leaves the fuel level too high in the bowl and even a gradual hill can cause fuel to back flow into the air box.

Many of us have kicked the bike over and heard and felt the explosion underneath the seat in the air box. The screen totally saves you filter.

Share this post


Link to post
Share on other sites

i was going to order the high flow backfire screen with my Barnum's side plate screen kit and they told me the stock b.f. screen was just as good as the replacement b.f. screens! anybody else here this?

Share this post


Link to post
Share on other sites
i was going to order the high flow backfire screen with my Barnum's side plate screen kit and they told me the stock b.f. screen was just as good as the replacement b.f. screens! anybody else here this?

If it ain't broke don't fix it. Yep I have heard and read that too. I have read of some folks taking a layer of screen out of the stock one but I don't see why someone would even do that. The theory is they are going to help it breath better. I don't think the screen is that much of a hinderance to breathing as long as you keep it clean.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0