Where's all them old Engineers ??

Bill Johnson · Post by **Bill Johnson** » Sat Dec 13, 2008 10:13 pm

I wonder how they ever came up with the raised square lips on the top intake transfer ports on the 90 series and above? What was their thinking?

Harold Member · Post by **Harold Member** » Sat Dec 13, 2008 11:01 pm

I wonder how many of them were involved with this one.

steveohara · Post by **steveohara** » Tue Dec 23, 2008 11:52 pm

Bill,

I would lay odds that the extra material you are referring to was not added to alter the performance of the engine. I'm betting they created that shape to provide a flat landing for the cutting tool that was perpendicular to the axis of the tool. Even with a cutter the size of the transfer ports it is hard to control when the tool hits on a curved surface and the tool will chatter or wander. It would be interesting to hear from someone who worked there on that subject.
Regards,
Steve O'Hara

Where's all them old Engineers ??

Re: Where's all them old Engineers ??

Re: Where's all them old Engineers ??

Re: Where's all them old Engineers ??