Lotus Elan


PostPost by: S2Jay » Tue Mar 15, 2011 5:14 am

Hi to all,

While still planning the configuration of the engine rebuild I have just started, I am concerned about the extent of port work needed.

Having noted stories about the amount of time and/or $$$ the port work on a Weber Head can be, I am curious if anyone has used ExtrudeHone for this? [It is now called ?Kennametal / Extrude Hone? since being purchased a few years back.] I have found no threads mentioning this at all. They do list facilities in England, Ireland, Germany & France, as well as the one nearby in Huntington Beach, Cal.

Has anyone heard that the high pressure applied in the ExtrudeHone process can [or has?] broken the relatively long & unsupported Intake runner casting in the Weber Head?

26 / 5009

just looking for clues at the scene....
Second Gear
Second Gear
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PostPost by: prezoom » Tue Mar 15, 2011 3:42 pm

I have used this process for a single downdraft carb manifold. They were able to dam areas of the manifold to achieve equal flow through all four ports. This was after I enlarged the plenum to create a larger area from, which to draw the mixture.
Very happy with the results.

Rob Walker
Rob Walker
1964 Sabra GT
1964 Elva Mk4T Coupe (awaiting restoration)
1965 Ford Falcon Ranchero, 302,AOD,9",rack and pinion,disc,etc,etc,etc
1954 Nash Healey LeMans Coupe

Owning a Lotus will get you off the couch
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