Twin-plug /4 motors...(pictures) |
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Twin-plug /4 motors...(pictures) |
Mueller |
Jul 30 2003, 10:48 AM
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#1
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
This is a Type I head, but it'll give you an idea for the 914 /4 motors.
Paul Guard, of Guard Transmission (maker of bitch'n parts for Porsche transmissions) loaned me this head to get an idea on how to twin-plug my motor. The secondary plug is a 10mm motocycle plug. A modified distributor cap from a Nissan 4 cyl truck engine is adapted to fit on the stock /4 distributor...the rotor is from Nissan as well. I have the drawings for this modification somewhere in my garage (IMG:style_emoticons/default/smile.gif) Using an aftermarket distributorless ignition would be ideal, but for cost savings, the above will work. There is a company that'll machine these heads for about 300 dollars or so (they do this for aircraft...not for performance, but for redundancy (saftey)) The sockets in the head are to give you an idea of the angles. Attached image(s) |
URY914 |
Jul 30 2003, 12:17 PM
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#2
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I built the lightest 914 in the history of mankind. Group: Members Posts: 123,041 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
Two things:
1. Is there really enough HP gain to justify the cost and PITA factor? 2. You're adding more weight (plugs, wire, cap, etc) OK, maybe item 2 isn't that big of a deal to most of you. Paul |
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