TRX250R.ORG
Workshop => Engine and Bottom End => Topic started by: jimcarrier on August 21, 2015, 08:17:17 PM
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Has anyone ever machined groove into stock head to use oring, been thinking of doing this and using 1/16 oring. only thing im not sure is the groove dimension, what about 0.050 dept with + -0.084 width.
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I never understood the concept of O-ringing the head ? If they fall or don't line up perfectly during re-assembly you'll have problems. You can have the top of the Cylinder O-Ringed....send it out to a reputable shop that does this and they'll set you up with the correct O-ring's. 1/16" is too small.....Yamaha YZ250 O-rings are 2mm (0.080") for reference. PM me if you need a recommendation of where to send it to have it done in Canada.
:)
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i think people put the grooves in the head out of convenience as its alot easier and cheaper to ship a head than a cylinder. it may be easier for the machinist as well. personally i would rather have them in the cylinder
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not willing to arg but banshee are 1/16 oring... and all big set up are on oring and it last...
anyway... im going to check a banshee cool head to know then....
btw im oringing the cylinder, i just dont want to start a fight agains why i dont oring head instead and ect.....
just ordered some yz oring... those are 1/16 on my mitsutoyo caliper, EXACT same size as the viton 1/16 i had bought for my banshee...
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who cares what aftermarket banshee heads use. most of them probly arent well thought out anyways. fyi the 85,125,250,300 ktms all use 2mm. seems you could just pick up a set from a ktm 250 or 300 (depending on the ID/OD of your cylinder) for $10 and be done with it. not sure on the goove dimensions but im sure theres some sites that will tell you
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i dont really want to arg about the why and what...
i tougt that someone here had already done it BY ITSELF. .. im not asking you where should i get it oringed..... i got a milling and lathee.
anyway i might expect too much from the internet... gonna find it by myself and keep it secret once done... lol
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if u have a mill and already know how to cut them why even ask? why is it every response from you is a response of "I dont want to argue" etc? it may be a language barrier issue or something but they are just giving u their opinions on the situation u asked about.
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I would think oring'ing the cylinder would be better just from an assembly stand point. The prox cylinder I have has the head cut for the ring. Perhaps it is a cost issue. I wouldn't know.
If you able to cut the groove yourself go for it! And if you want to use a 1/16 oring go for it! No one arguing here just sharing options and opinions. I would say try the 1/16 oring as you plan. If it doesn't hold up you can cut more and use the 2mm oring. Trial and error.
Let us know how it goes. And take pictures. We like pictures:)
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i, ****ing, dont, know, the, groove, dimension, you guys obliviously dont read....
sorry i tought i was on .net. where i get real anwser by acurate people... lol
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LOL.
we read just fine. thats funny because i saw your TSR software thread over there, which basically went the same way this has. people offering opinions on how to go about your situation, and you replying with the same pompous abrasive attitude as u have here.
if you have a mill and are a machinist it is shocking to me that you dont know how to find this information.
http://www.row-inc.com/sizes.html
merry xmas. you will go farther with a less dicky attitude.
(https://media4.giphy.com/media/Y2nbrJyAR6RiM/200_s.gif)
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Got my anwser. its ok i wont bother coming back here. at least carlos give straight acurate anwser lol.
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See ya lol. You seemed ready for an argument on the get go. I ask questions here when I want answers not an arguement.
Sent from my Galaxy S5
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Got my anwser. its ok i wont bother coming back here. at least carlos give straight acurate anwser lol.
Pumashine spiritaces ban hammer?
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Hey sorry I didn't have the exact information you wanted. If you want a more accurate "opinion" then yes head back over to our old home. The one Carlos pays to be on.
Now that you got your f ucking answer. some ****in g patents and a good attitude goes along way here.
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Got my anwser. its ok i wont bother coming back here. at least carlos give straight acurate anwser lol.
Sweet, no problem, good bye now.
Members here have answered your question to the best of their knowledge. Carlos knows nothing. Any answer given by him can be looked up on google. An oring takes up a particular volume. The simple formula for groove width and depth can be used with any thickness o-ring you desire. Its not rocket science... or maybe it is to you. You do not deserve to be here if you cannot respect the advice given. Have a great day!!!
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I'm curious as all hell. I would personally love to see this engine run, I really would, but it seems so bizarre.
Like the "deck height" thread, he said he didn't have a piston yet. I would never (and I mean never) take my cylinder to a machinist and hack off the bottom without ever having a piston to make my own measurements, ESPECIALLY if I already know that I'll be using a flat-top piston or something other than stock.
We're just trying to help the guy because many of us have made the mistakes we see coming. I truly, and honestly, hope it all works out for him.
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oh its that goofball ??? i remember that thread. didnt have a piston so just measured down x amount of mm from top deck and started grinding. i applaude his enthusiasm to get er done but having a piston in hand would be a better way