Pro-tec O Rings - which one?

[thegoldenboy]

I recently received the head pictured below. Its for a 650 SJ and is a recreational head that has fixed domes. Does anyone know which O rings I need to order to make this work?

http://www.pro-tecperformance.com/cylinderheads.htm#Replacement Cylinder Head O-Rings

I've emailed pro tec but they havn't responded...

I'm guessing its 14-9485 but I wanted to check first. Thanks guys.

Picture of head.
http://www.x-h2o.com/attachment.php?attachmentid=18101&d=1168445155

 

[Mark44]

I would measure the o ring groove ID and width then order the correct dash number from McMaster Carr. You can get a bag of 25-50 for that price.

Mark44

 

[thegoldenboy]

For future reference of others"

Email from Pro-tec: "The Pro-Tec heads have been made with two different size o-rings over the years. The early heads used a .070" diameter o-ring (part #14-9485) and the later heads used a .105" diameter o-ring (part # 14-9487). We have both in stock and you can order through our website or give us a call and order them by phone. The pipe bushings are also available, the insert portion is part # 12-2412 and the outer rubber coated washer is part # 12-2414."

The pipe he's talking about is the 650 SJ pipe bushings.

Thanks for the reply Pro-tec! :smile: