a little exhaust performance, was it a bad idea?

Mormonmopedmaifa · Post by **Mormonmopedmaifa** » Wed Oct 19, 2005 10:24 am

hey if i dont have that white plastic fan covered with the black plastic peice will the engine overheat?

Post by **noiseguy** » Wed Oct 19, 2005 12:56 pm

maddog wrote:Don't drill any holes in that pipe, its not restricted, change the carb jet to a #87 and open up the air intake located on the airbox cover, you will gain some speed.

Don't drill any holes in the exhaust? That's one of the few things I've found that actually works. It is restricted in that it contains 3 baffle chambers and a "too small" outpipe, although not in a "let's weld a 1/4" washer in here" way.

Post by **noiseguy** » Wed Oct 19, 2005 12:56 pm

Mormonmopedmaifa wrote:hey if i dont have that white plastic fan covered with the black plastic peice will the engine overheat?

Yes it will, which might be one of your problems.

Mormonmopedmaifa · Post by **Mormonmopedmaifa** » Wed Oct 19, 2005 2:28 pm

would this cause power loss after ridin for about 10 minutes ..... amn if my problem are cuased by sumthin this stupid ...... just to make sure were talkin about the same part u mean the little cover that goes over the fan on the left side of the engine?

thanks for all ur help and runnin this forum i would have never got this sweet little moped runnin.

burnt_toast · Post by **burnt_toast** » Wed Oct 19, 2005 3:58 pm

noiseguy wrote:... If you want to free up some backpressure, drill the exhaust around the exhaust outlet with 2-4 holes, 1/4" diam. You'll need about 6" of bit to do it.

Don't continue running it the way you've done it, you're asking for problems.

exactlty right. running like this you lean out and slowly destroy your piston. running lean would cause it to overheat as well.

burnt_toast · Post by **burnt_toast** » Wed Oct 19, 2005 4:00 pm

noiseguy wrote:
Mormonmopedmaifa wrote:hey if i dont have that white plastic fan covered with the black plastic peice will the engine overheat?
Yes it will, which might be one of your problems.

I must say, I have never had my plastic cover for the engine (look at avator pic), and my spree seemed to run fine. I had only overheated twice. But then again, this may also be why my piston only lasted a year after my first rebuild.

Mormonmopedmaifa · Post by **Mormonmopedmaifa** » Wed Oct 19, 2005 8:04 pm

thats what my spree looks like

Post by **noiseguy** » Wed Oct 19, 2005 9:49 pm

Don't run it like that. I don't think Burnt ran his for long times/distances. You guys need to get the shroud cover for these and install it. There's 4 pieces:
1) Fan. White. Should have all it's fins
2) Front cover. Covers fan.
3) Top shroud. Covers jug and head
4) Spark plug boot. Seals plug to top shroud.
See the manual for what it should look like.

If you don't have these, get on Ebay, buy them and get them installed. These are cast iron jugs with little airflow, you need forced cooling or you're asking for problems.

maddog · Post by **maddog** » Thu Oct 20, 2005 4:31 am

Hey noiseguy, its an aero he is talking about, not a worthless spree, pm me with your email and i will send you pics of what i create! shipping parts to Michigan as we speak :lol:

Mormonmopedmaifa · Post by **Mormonmopedmaifa** » Thu Oct 20, 2005 10:32 am

noiseguy wrote:Don't run it like that. I don't think Burnt ran his for long times/distances. You guys need to get the shroud cover for these and install it. There's 4 pieces:
1) Fan. White. Should have all it's fins
2) Front cover. Covers fan.
3) Top shroud. Covers jug and head
4) Spark plug boot. Seals plug to top shroud.
See the manual for what it should look like.

If you don't have these, get on Ebay, buy them and get them installed. These are cast iron jugs with little airflow, you need forced cooling or you're asking for problems.

i got the fan and its fine . i dont have a front cover, dont have a shroud for fan or jug and head.and is the boot just the big plastic peice the sparkplug site is? ( can u post a pic of one so i can try and get it all on ebay)

burnt_toast · Post by **burnt_toast** » Thu Oct 20, 2005 2:41 pm

noiseguy wrote:Don't run it like that. I don't think Burnt ran his for long times/distances. You guys need to get the shroud cover for these and install it.

haha, ud be suprised. I rode almost everyday, and usually atleast 5miles. About 20+miles one day when I wanted to see how far I could make it. And all while in the Texas summer heat!

Mormonmopedmaifa · Post by **Mormonmopedmaifa** » Fri Oct 28, 2005 12:09 pm

does ne one have a picture of the spark plug cover thing?