Spark arrestor....yes or no? - Page 2 - Suzuki Z400 Forum : Z400 Forums
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post #16 of 24 (permalink) Old 09-09-2002, 09:06 PM
 
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thx corpsie
sanojoe
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post #17 of 24 (permalink) Old 09-09-2002, 11:29 PM
 
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picture of exhaust cut out

Look carefully and you'll see (or can imagine) how I drilled out the area around the pea shooter until I could pull it out.

For jets, go to any ATV/Dirt bike store, tell them you have a Mikuni 36mm carburetor. You need jets with round heads. The stock jet is a small round head. I accidently bought one with a big head and it still fit (hooray!)

dynojet site: go down the screen and click "Q312". It's the instructions for rejetting our ATV's. You basically won't need the instructions, just use the picture to get familar with what you are looking for.
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post #18 of 24 (permalink) Old 09-10-2002, 02:08 AM
 
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Thanks Corpsie, I will give it a try. I will keep you posted.
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post #19 of 24 (permalink) Old 09-10-2002, 07:50 PM
 
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corpsie: why didn't you cut off the spark arrestor with the screen on it. Wouldn't that help out power wise as well?
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post #20 of 24 (permalink) Old 09-10-2002, 11:03 PM
 
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sanojoe

The screen isn't that big of a restriction, plus I need it to be legal in certain parks, plus it's the "right thing" to do by leaving it in.

If you're skilled with a soldering iron, you can probably cut a hole in the solid back plate of the spark arrestor and put some screen in there too.
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post #21 of 24 (permalink) Old 09-13-2002, 08:26 PM
 
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corpsie: yeah your right! even though most of my riding is on a mx track, some of my buddies and i will go trail riding.
thx for the info.
sanojoe
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post #22 of 24 (permalink) Old 09-25-2002, 09:01 PM
 
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I have a couple of corrections.

In my above post, it was a 145 main jet, not a 140.

Also, check my signature for my current mods (for those who want to re-jet once, this is what to do)
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post #23 of 24 (permalink) Old 04-25-2019, 03:34 AM
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I just bought a 2012 and the muffler end cap is gone when I look in exhaust I see things inside there but don't know what they are. How would I know if I have a spark arrestor ? And if I should replace the end cap or not necessary
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post #24 of 24 (permalink) Old 04-27-2019, 12:13 PM
CFM
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Quote:
Originally Posted by Shawng1101 View Post
I just bought a 2012 and the muffler end cap is gone when I look in exhaust I see things inside there but don't know what they are. How would I know if I have a spark arrestor ? And if I should replace the end cap or not necessary

Wow, old post lol

The spark arrestor is part of the end cap on a stock exhaust, so if you need a spark arrestor, you will need to get an end cap.

Performance wise, the end cap makes no difference. Removing it just makes it louder.
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