Board index

My Home Page

PilotOdyssey.com By hoser...


PilotOdyssey.com Chat Room

PilotOdyssey.com Photo Album

* Login   * Register * FAQ
http://www.pilotodyssey.com/PO/adm/images/imagemenu/smiley_cool.png PilotOdyssey.com Chat    http://www.pilotodyssey.com/PO/adm/images/imagemenu/find.png PilotOdyssey.com Google Search    http://www.pilotodyssey.com/PO/adm/images/imagemenu/emoticon_tongue.png FL400 Parts    http://www.pilotodyssey.com/PO/adm/images/imagemenu/emoticon_grin.png FL350 Parts    http://www.pilotodyssey.com/PO/adm/images/imagemenu/emoticon_evilgrin.png FL250 Parts    http://www.pilotodyssey.com/PO/adm/images/imagemenu/emoticon_unhappy.png Admin Email    http://www.pilotodyssey.com/PO/adm/images/imagemenu/emoticon_grin.png PilotOdyssey.com V2.0   
It is currently Sun Oct 22, 2017 5:10 pm

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 34 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: 80mm cylinder
PostPosted: Sun Jul 29, 2012 8:18 pm 
Offline

Joined: Fri Jul 13, 2012 7:54 am
Posts: 51
I tore down my motor (( Internal Combustion Engine ? )) today to put in a set of seals and new rings. I have not been into this
motor (( Internal Combustion Engine ? )) since I bought it. I have rebuilt the Engine in our other Oddy, but it has a 78mm cylinder. This motor (( Internal Combustion Engine ? )) has an 80mm cylinder, and there is no exhaust bridge. Has someone cut it out, or is this how the 80mm jugs were built. Some one spent alot of time and money on port work, and I don't know if that is when the exhaust bridge went away. Also the piston has a
square machined into each side just above the wrist pin. It is a wiseco. Is that the way they are made for the 80mm jugs or is this more of the machinist handy work. I know my other Oddys wiseco piston does not look anything like this one.
All I know is whoever did the work, did a good job because it's still a screamer even with only 60 PSI compression.


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Sun Jul 29, 2012 9:05 pm 
Offline

Joined: Mon Dec 15, 2003 2:40 pm
Posts: 22129
Location: Chicago
Do you have any pictures of the parts you describe?


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Sun Jul 29, 2012 10:00 pm 
Offline

Joined: Fri Jul 13, 2012 7:54 am
Posts: 51
I'll try to get some posted real quick


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Sun Jul 29, 2012 10:25 pm 
Offline

Joined: Fri Jul 13, 2012 7:54 am
Posts: 51
Hera is my cylinder and wiseco piston


Attachments:
100_2951_2.JPG
100_2951_2.JPG [ 48.31 KiB | Viewed 717 times ]
100_2952_2.JPG
100_2952_2.JPG [ 18.44 KiB | Viewed 717 times ]
100_2953_2.JPG
100_2953_2.JPG [ 17.75 KiB | Viewed 717 times ]
Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Sun Jul 29, 2012 10:28 pm 
Offline

Joined: Thu Jan 12, 2012 11:35 am
Posts: 2010
Location: Ottawa, IL
Can you get detailed pics of the exhaust and intake ports? Thanks


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Sun Jul 29, 2012 10:56 pm 
Offline

Joined: Fri Jul 13, 2012 7:54 am
Posts: 51
These are as good as my camara will take


Attachments:
100_2954_2.JPG
100_2954_2.JPG [ 220.3 KiB | Viewed 715 times ]
100_2955_2.JPG
100_2955_2.JPG [ 215.53 KiB | Viewed 715 times ]
100_2957_2.JPG
100_2957_2.JPG [ 191.49 KiB | Viewed 715 times ]
100_2959_2.JPG
100_2959_2.JPG [ 240.82 KiB | Viewed 715 times ]
100_2917_2.JPG
100_2917_2.JPG [ 232.92 KiB | Viewed 715 times ]
Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Sun Jul 29, 2012 11:22 pm 
Offline

Joined: Thu Jan 12, 2012 11:35 am
Posts: 2010
Location: Ottawa, IL
Thank you. Someone should be able to help you out better now. If that sucker runs good at 60psi wait till you light it up at 160. Lol. Glad it runs good for you. Looks like a nice 350. Please introduce yourself in the new members section and please share pics of your ride. Looks really nice. Thanks


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Mon Jul 30, 2012 8:02 am 
Offline

Joined: Fri Jul 13, 2012 7:54 am
Posts: 51
Here are a few pics, its not much to look at, but neither am I. Rocket is a nickname that was stuck on me so many years ago when I got on the fire dept. here in Okla. city. We mainly
run the South Canadian river bed when it dries up in the summer. It's flat and fast. that's why
I'm having issues, I don't think theses things were designed to run a mile or wide open. Never been to Little Saraha, don't know why since it's pretty close. I'll have to one of these days before I get to old to enjoy it. any way thanks for all the help you guys and (gals?) have given.


Attachments:
2011 09-00 (3)_2.jpg
2011 09-00 (3)_2.jpg [ 225.04 KiB | Viewed 702 times ]
100_2918_2.JPG
100_2918_2.JPG [ 226.67 KiB | Viewed 702 times ]
File comment: anyone ever put on a brake light? need to change my taillight into a brake light so the big trucks I run with don't squash me
100_2917_2.JPG
100_2917_2.JPG [ 232.92 KiB | Viewed 702 times ]
Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Mon Jul 30, 2012 9:48 am 
Offline

Joined: Fri Jul 13, 2012 7:54 am
Posts: 51
randman was talking in another post about thick and thin head and base gaskets.
What brand are the thin gaskets. Around here at the cycle shops they don't have the spes, or are just to lazy to look. I'm trying to get this all figured out today so I can order parts tomorrow when the stores will be open. All motorcycle shops being closed on Mondays, is this
a nation wide thing, or just something that goes on in Oklahoma. All I know is it sucks.


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Mon Jul 30, 2012 10:25 am 
Offline

Joined: Wed Jan 21, 2009 10:11 pm
Posts: 2939
Location: houston
Looks like a nice ride with the watercooled setup.I know one thing for sure,if hoser reads this thread hes gonna tell you to get rid of that k&n filter setup,they suck at keeping sand and dirt out.Put the original airbox back on and use the k&n as a prefilter


Top
 Profile  
 
 Post subject: Re: 80mm cylinder
PostPosted: Mon Jul 30, 2012 6:32 pm 
Offline

Joined: Fri Feb 29, 2008 1:51 am
Posts: 2702
Location: Upland, Ca
The best gasket set out right now is the vesrah set. It's close to oem. Just take the 3 piece head gasket apart and run only 1 later.


Top
 Profile  
 
 Post subject: Re: 80mm cylinder
PostPosted: Mon Jul 30, 2012 6:47 pm 
Offline

Joined: Fri Feb 29, 2008 1:51 am
Posts: 2702
Location: Upland, Ca
Your Engine work was done by lekich racing. One of only a few to remove the exhaust bridge. I can see by your head it's a lekich head. When you rebuild this make sure you relieve the ring grove on the piston when you prep it for longer piston life. Since the exhaust port is so wide the rings rub the top of the port more then usual.


Top
 Profile  
 
 Post subject: Re: 80mm cylinder
PostPosted: Mon Jul 30, 2012 6:50 pm 
Offline

Joined: Fri Jul 13, 2012 7:54 am
Posts: 51
What do you mean (releave the ring groove?)


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Mon Jul 30, 2012 6:52 pm 
Offline

Joined: Mon Dec 15, 2003 2:40 pm
Posts: 22129
Location: Chicago
It was running at 60 PSI? I would be trying another tester.

More detail pics of the parts please cant really see anything in the pics you provided, all sides of the piston, all sides of the cylinder and head, all taken in good light with a camera not a cell phone.

What I could see in the pics is your cylinder has no exhaust bridge someone remove it?

Pics pics pics...


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Mon Jul 30, 2012 6:59 pm 
Offline

Joined: Mon Dec 15, 2003 2:40 pm
Posts: 22129
Location: Chicago
redskinman wrote:
Looks like a nice ride with the watercooled setup.I know one thing for sure,if hoser reads this thread hes gonna tell you to get rid of that k&n filter setup,they suck at keeping sand and dirt out.Put the original airbox back on and use the k&n as a prefilter


In this picture you can see where the Engine has been sucking dirt see the vertical scratches on the cylinder wall no surprise its a K&N filter he needs to remove the old rings from the piston and lay them on a white towel or paper plate then take some detail pics of the rings.

Image


Ditch the K&N get a real filter viewtopic.php?f=9&t=5491&start=0


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Mon Jul 30, 2012 7:15 pm 
Offline

Joined: Fri Jul 13, 2012 7:54 am
Posts: 51
Those pics of the ports are as good as I can get, but here are some of the piston. Is that the releave cut just below the second ring land that is being talked about?


Attachments:
100_2961_2.JPG
100_2961_2.JPG [ 189.4 KiB | Viewed 673 times ]
100_2962_2.JPG
100_2962_2.JPG [ 181.52 KiB | Viewed 673 times ]
100_2963_2.JPG
100_2963_2.JPG [ 157.83 KiB | Viewed 673 times ]
Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Mon Jul 30, 2012 7:24 pm 
Offline

Joined: Fri Jul 13, 2012 7:54 am
Posts: 51
I've been woundering about my comp gauge, because both my Oddys and my 2 stroke golf
cart all have around 60 psi, but when I checked my lawnmower its running 130 psi.
I know the cylinder is scuffed, but it was already well used when I bought it 4 years ago, and I have been running the thing very hard for the last 4 years.


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Mon Jul 30, 2012 7:34 pm 
Offline

Joined: Mon Dec 15, 2003 2:40 pm
Posts: 22129
Location: Chicago
Look at your piston, above the top ring a layer of carbon tried to develop (dark brown varnish looking coating) but large particles of dirt has got between the cylinder wall and the piston and has worn off the carbon coating the areas where its worn off it looks like aluminum, look closer and you can see dark spots that are almost black that looks like dirt that has been smeared into the surface of the piston, this is something you should never see.

Remove the slide from your carb and take some pics.

Any pics of the rings?

That cutout your asking about on the piston is what the wiseco pistons use to look like before they RAISED the prices of their pistons then reduced the amount of machining time and steps required to make a piston, the end result was a heavier crappier piston for the consumer and more corporate bonus for the top dogs, you don't need a scale to weigh the pistons you can feel the weight difference by hand.

They use to machine out excess material on their pistons to make them lighter.


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Mon Jul 30, 2012 9:54 pm 
Offline

Joined: Fri Jul 13, 2012 7:54 am
Posts: 51
I tried to take some pics of the rings, but they would'nt come out. They don't look very bad but there is some scuffing on them. The carb isn't here, so I can't get a pic of it right now.


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Mon Jul 30, 2012 9:56 pm 
Offline

Joined: Fri Jul 13, 2012 7:54 am
Posts: 51
Has anyone drilled the piston to lighten it up?


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Tue Jul 31, 2012 1:50 am 
Offline

Joined: Fri Feb 29, 2008 1:51 am
Posts: 2702
Location: Upland, Ca
With your exhaust port so wide the piston catches ever so lightly every stoke on the top of the port so it starts to collapes down into the rings on the exhaust side. So you need to open up the ring grooves a thousandth on both ring grooves to allow for and last much longer


Top
 Profile  
 
 Post subject: Re: 80mm cylinder
PostPosted: Tue Jul 31, 2012 2:21 am 
Offline

Joined: Tue Aug 03, 2010 12:02 am
Posts: 2014
Location: St. John, Washington
i noticed you asked how to add a brake light on your picture of the tail light. here is the switch you need to run a brake light.

http://www.ebay.com/itm/MOTORCYCLE-HYDR ... a5&vxp=mtr


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Tue Jul 31, 2012 5:35 pm 
Offline

Joined: Fri Jul 13, 2012 7:54 am
Posts: 51
Thanks for the brake light switch idea, it looks like just what I need.


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Tue Jul 31, 2012 7:17 pm 
Offline

Joined: Mon Dec 15, 2003 2:40 pm
Posts: 22129
Location: Chicago
shoubadaba wrote:
With your exhaust port so wide the piston catches ever so lightly every stoke on the top of the port so it starts to collapes down into the rings on the exhaust side. So you need to open up the ring grooves a thousandth on both ring grooves to allow for and last much longer



You have more info on the removing the exhaust bridge thing I been tempted to remove one on a unmodified 350 cylinder since the stock exhaust ports are so narrow, also considered doing this on my ATC250R 300cc big bore kit they both look like without the bridge would be the perfect exhaust.


Top
 Profile E-mail  
 
 Post subject: Re: 80mm cylinder
PostPosted: Wed Aug 01, 2012 11:36 am 
Offline

Joined: Fri Jul 13, 2012 7:54 am
Posts: 51
I was not the one who removed the exhaust bridge, it was aready done when I bought the machine. I've been running it hard for about 4 years and it was a used Engine at that point.
This is the first time being into the Engine since I bought it. Everyone is saying it needs the
bridge, but I don't see anthing bad going on with it not being there. Even though the piston,
rings, and bore look a little rough from eating sand. Everything looks pretty good for being as old as the Engine is.


Top
 Profile E-mail  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 34 posts ]  Go to page 1, 2  Next

All times are UTC - 5 hours [ DST ]


Who is online

Registered users: Baidu [Spider], Bing [Bot], bullnerd, DC, Duneit, FloridaEdd, Google [Bot], jknarfal, Kozminot, liduno, mforbes, Randman, rmesser, toby


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group