single and double port engines

[leonardabell]

How can I see the difference between a single and double port engine?

[Gary Hammond]

Hi Leonard,

The single port or double port refers to the number of intake ports in each cylinder head. You have single port heads on yours which require a single port manifold. It uses a one piece tube that goes all the way across the engine and fastens to the head on each side with a flange. Like in this link. single port manifold

With dual port heads, the intake manifold is a three piece construction. The center piece fastens to cast aluminum end pieces with a rubber boot. The end castings then bolt directly to the heads. These end castings are Y shaped to provide for feeding two intake ports into the heads. Here's the links. center section and End castings

But I also found replacement pre-heat tubes which are all you need for yours. I didn't even realize these were available separately when we spoke over the phone. Here's the link to the pre-heat tubes. Pre-heat Tubes

Gary Hammond,

[leonardabell]

Thank you for the info. As of now I have a hose clamp over the hole. Still a little leak buy not bad.