Westcoast head 3-bond?? sealent??

[Jayski]

I have new o-rings for my westcoast head, what i want to know is if i should install with 3-bond or some sealent??? should i just 3 bond the top one or both?? or should i use greese, which is what i have done in the past..

Id also be intrested to know if anyone is running a ep7500 westcoast head on a bored 750, mine is 779cc and the pipe is dam close to the o-rings.

 

[SUPERJET-113]

I would use the good high temp blue or black RTV silicone. I used that all the time on my Pro-tec oringed head for many years and never had a problem. Also it is what pro-tec recommended.
Just silicone the head real good, then torque it down and let it dry overnight.

 

[#ZERO]

Just use a little grease; that head has the surrounding o-ring around the outside. :biggthumpup:

 

[Dustin Mustangs]

Yeah, only use the RTV to seal where there isn't an oring. On the protec head mentioned above there is no oring to seal the water jacket.

 

[SUPERJET-113]

Yeah, only use the RTV to seal where there isn't an oring. On the protec head mentioned above there is no oring to seal the water jacket.

Yes, Pro-tec made standard heads(non-removable domes) with O-rings and the instructions said to use the blue or black RTV.
I just smeared a thin layer of the blue RTV over everything including the o-rings then installed. If i had to take the head off for some reason, I would clean it up and put new orings in and re-seal it. I ran that head on a Riva SS ported 61X cyl. @190 lbs. compression for over 15 years without a problem.

i had those Pro-tec taper bored carbs tuned in so well that I never even ran a return line on them.. I spent WAY to much money with Pro-tec and Riva "back in the day" .. i was a young man with new credit cards.

 

[kevbo]

I have new o-rings for my westcoast head, what i want to know is if i should install with 3-bond or some sealent??? should i just 3 bond the top one or both?? or should i use greese, which is what i have done in the past..

Id also be intrested to know if anyone is running a ep7500 westcoast head on a bored 750, mine is 779cc and the pipe is dam close to the o-rings.

Those domes will be very close to falling into the bore, plus they tend to be difficult to seal anyway. You will be a lot better off with a stock sxi or sxr head.