O ring question

[Bobert540]

I just bought a used Pro-Tec Recreation Head for my 650. It came with O-rings but they are used and want to purchase new ones. I checked Pro-tec's site but they have a $20 min. order:shooter3:

Does anyone know what size rings I need and where I can get them other than Pro Tec? Thanks!

 

[Mark44]

Measure the o ring groove then go to McMaster Carr.

Mark44

 

[YAMA CAT]

I just bought a used Pro-Tec Recreation Head for my 650. It came with O-rings but they are used and want to purchase new ones. I checked Pro-tec's site but they have a $20 min. order:shooter3:

Does anyone know what size rings I need and where I can get them other than Pro Tec? Thanks!

Dustin listed the replacement o-ring in this thread hope this helps.
http://www.x-h2o.com/threads/31581

 

[Bobert540]

Thanks, he has the ones listed for the 701 but I think they are the same...

 

[Bobert540]

Also, Do you still run the stock plugs with this head???

 

[Mark44]

Remember to always check squish when installing an after market head for the first time.

Mark44

 

[Bobert540]

Will def. do that....do most people change the plugs with an aftermarket head? Also, since the head doesn't use a gasket, just RTV, is there a recommended amount to put on? I assume it is a small bead around the water jackets...

 

[Mark44]

I thought it was an o ring head no need for silicone.

Mark44

 

[Bobert540]

From what I understand you are supposed to use the permatex sealant when installing the head.

 

[Dustin Mustangs]

Protec repeatedly told me this head uses the -153 oring but they do not fit my head. The -043's I have listed in the thread yamacat linked do fit and I am now successfully running them. I don't know if I have a one-off head or if they are off their rocker or what but the -153's were way to big for me. During this whole debacle I asked if the 650 head took the same oring and they said it did. They suggest you seal the outside of the water jacket with permatex ultra-black, while the oring seals the inner portion. I imagine any type of sealer that can hold up to the heat will work.

 

[Bobert540]

I just called and talked to them about the o-rings. If the are where the o ring goes is about the thickness of a quarter then you use the small ones. If it is larger than you use the larger ones. What size was the space on your head??

 

[wetjet701]

With any aftermarket head I was told by a certain company always use the br8es plugs (yamaha only kawi may be diff)

 

[Bobert540]

Thanks for the info WetJet

 

[Dustin Mustangs]

Yeah, that's the right plug. My head is on my ski and I never tried to stick a quarter in it. I measured it at right around 2mm tho. I'm surprised they didn't clue me in on that little tid-bit with all the talking to them I did. I guess it just depends who you get on the phone...