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Workshop => Engine and Bottom End => Topic started by: sangheraent on April 03, 2016, 09:17:28 PM

Title: Oring for cylinder head
Post by: sangheraent on April 03, 2016, 09:17:28 PM
I am looking for an Oring for my Lasleeve cylinder head. I know I can call La Sleeve and order it but they want a lot of money and only sell them in a package with the outter oring and copper washers. so as you can imagine I have 2 sets with just the inner oring missing. Absolute nonsense. a

anyone have any idea if I can use a prodesign version?
Title: Oring for cylinder head
Post by: Jerry Hall on April 03, 2016, 11:09:08 PM
I have a lot of 0-rings.  What are the 0-ring gland dimensions?
Title: Oring for cylinder head
Post by: hontrx265r on April 04, 2016, 09:56:39 AM
I have been told a hydraulic store, and ask for them in viton, but also have not explored that option.
Title: Oring for cylinder head
Post by: Skeans1 on April 04, 2016, 11:27:23 AM
Quote from: hontrx265r;66303
I have been told a hydraulic store, and ask for them in viton, but also have not explored that option.

Most hydraulic shops will have them or can point you in the right direction.
Title: Oring for cylinder head
Post by: sangheraent on April 04, 2016, 12:54:49 PM
I put the motor back together yesterday with the Oring that was in there its frayed right now and I am really scared to take it out just to measure. I think my only route is to order a new one from La sleeve and then measure the new one.

oring passed the leak down test so id rather not touch it. I have to test and tune the bike for a dune trip coming up so Id rather change the oring before we go.

doesn't big dog toys use la sleeve cylinders? I wonder if he sells just the oring
Title: Oring for cylinder head
Post by: C-Leigh Racing on April 04, 2016, 01:20:36 PM
You can pretty much, measure the o ring groove in the top of the cylinder to get the size of o ring needed. I cant remember the width of the groove, but know it is 0.050 in depth on the Pro-x cylinders. The groove being that deep, then you know the o ring has to be thicker than 0.050 so to have enough mass to squish out & seal the area.
Way back in my mind, seams like I remember somebody saying the o ring from a Yamaha YZ250 dirt bike would work, but I got no idea the year model.
Neil
Title: Oring for cylinder head
Post by: Langbolt on April 04, 2016, 08:55:25 PM
Quote from: C-Leigh Racing;66317
You can pretty much, measure the o ring groove in the top of the cylinder to get the size of o ring needed. I cant remember the width of the groove, but know it is 0.050 in depth on the Pro-x cylinders. The groove being that deep, then you know the o ring has to be thicker than 0.050 so to have enough mass to squish out & seal the area.
Way back in my mind, seams like I remember somebody saying the o ring from a Yamaha YZ250 dirt bike would work, but I got no idea the year model.
Neil

yes! on a 310 Pro-X they used the o-rings from a 1991 YZ250.....I've used them and they work fine....Part#93210-77363-00 Inner O-ring & Part#93211-11770-00 Outer....both with run you $20.

:)
Title: Oring for cylinder head
Post by: Aceman on April 04, 2016, 09:18:08 PM
Quote from: sangheraent;66278
I am looking for an Oring for my Lasleeve cylinder head. I know I can call La Sleeve and order it but they want a lot of money and only sell them in a package with the outter oring and copper washers. so as you can imagine I have 2 sets with just the inner oring missing. Absolute nonsense. a

anyone have any idea if I can use a prodesign version?

I just ordered 1 outer o-ring that was missing for my LA Sleeve Pro Cross 310 cylinder.  They didn't make me buy anything else.  It was $7.50.
Title: Oring for cylinder head
Post by: sangheraent on April 05, 2016, 07:43:25 PM
I called them and they did sell me just the oring this time, weird. Anyway it was $15.
Title: Oring for cylinder head
Post by: Aceman on April 05, 2016, 09:07:10 PM
You just have to ask nicely!:tennis:
Title: Oring for cylinder head
Post by: thesmith87250r on April 05, 2016, 09:23:39 PM
how much is the kit ? 15$ for one shipped ?
Title: Oring for cylinder head
Post by: sangheraent on April 05, 2016, 09:27:03 PM
the kit is $30 or $35 not 100% certain. $15 for 1 oring shipped and shipping was free.
Title: Oring for cylinder head
Post by: Skeans1 on April 05, 2016, 10:04:36 PM
Quote from: sangheraent;66359
the kit is $30 or $35 not 100% certain. $15 for 1 oring shipped and shipping was free.

Lol I can go to a local place and get 10 for 15
Title: Oring for cylinder head
Post by: Aceman on April 06, 2016, 09:06:23 AM
Not everyone has a local place....
Title: Oring for cylinder head
Post by: Skeans1 on April 06, 2016, 09:43:39 AM
Quote from: Aceman;66369
Not everyone has a local place....

Maybe but if people looked around its not hard to find the sources.
Title: Oring for cylinder head
Post by: sangheraent on April 06, 2016, 09:53:54 AM
Local isn't an option for me tried that several times and everytime they say I have to order a box of 100. I ordered this oring from them because then I can take the head off measure the groves and the oring and order a but load of them online for a fraction of that price.

Sent from my STV100-3 using Tapatalk
Title: Oring for cylinder head
Post by: Skeans1 on April 06, 2016, 10:43:29 AM
Quote from: Aceman;66369
Not everyone has a local place....

Maybe but if people looked around its not hard to find the sources.