 Twin plug /4, ROI? |
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| r_towle |
 Feb 17 2018, 04:13 PM
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Custom Member  Group: Members Posts: 24,705 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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Has anyone done testing to understand the Net difference between single and twin plug on a /4?
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| horizontally-opposed |
Feb 18 2018, 05:28 PM
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#2
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Advanced Member Group: Members Posts: 3,456 Joined: 12-May 04 From: San Francisco Member No.: 2,058 Region Association: None
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European Car (RIP), maybe when it was still VW&Porsche, magazine did a story on a black 914 with chrome five-lug Fuchs, the "PORSCHE" side valances, and...a twin-plug Type IV engine—noting it ran noticeably smoother and sounded better with dual ignition. Same car may have been supercharged at some point?
I believe it popped up for sale recently, now with six cylinders. Not sure what to take from that, if anything. |
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Posts in this topic
r_towle Twin plug /4 Feb 17 2018, 04:13 PM
mepstein A twin plug doesn't make power in it's sel... Feb 17 2018, 04:25 PM ablesnead I had one of the first ones years ago ....used a d... Feb 17 2018, 04:38 PM Mueller Good question, i know on aircraft engines you can ... Feb 17 2018, 04:39 PM
buz914 And aircraft engines are low compression, air cool... Feb 17 2018, 07:11 PM Mueller
And aircraft engines are low compression, air coo... Feb 17 2018, 07:53 PM Elliot Cannon These guys rebuilt my heads for me. They can conv... Feb 17 2018, 07:08 PM Mueller Microsquirt seems the easiest for twin plugging no... Feb 17 2018, 07:51 PM gms The 914/4 combustion chamber is a modified wedge s... Feb 18 2018, 09:23 AM peteyd Here is a build thread of a 2.8L twin plug
http:/... Feb 18 2018, 01:23 PM Krieger Sounds like one more place for the heads to crack ... Feb 18 2018, 01:33 PM gereed75 Agree with Glenn. The 911 benefits because of comb... Feb 18 2018, 01:34 PM peteyd I have always been interested in a twin plugged en... Feb 18 2018, 01:42 PM 914werke The 914/4 combustion chamber is a modified wedge ... Feb 18 2018, 05:05 PM 914werke European Car (RIP), maybe when it was still VW... Feb 18 2018, 07:11 PM r_towle So, lots of cool responses.
I am curious if twin ... Feb 18 2018, 07:27 PM jd74914
So, lots of cool responses.
I am curious if twin... Feb 19 2018, 06:09 AM ablesnead ..My car was in Volkswagen Porsche way back in the... Feb 18 2018, 07:29 PM Chris914n6 The dizzy cap is from an 80s Datsun 720 pickup wit... Feb 19 2018, 01:00 AM 914werke So perhaps Im incorrect, but I get the sense that ... Feb 19 2018, 01:41 PM Mark Henry Not worth it IMHO, only good place to put the plug... Feb 19 2018, 03:52 PM pete000 Aero-VW airplane engines use the second plug as a ... Feb 19 2018, 07:19 PM Dave_Darling That chamber shape looks somewhat different than o... Feb 19 2018, 09:08 PM Mark Henry
That chamber shape looks somewhat different than ... Feb 20 2018, 09:18 AM WLD419 Hello, I've been running a twinplug 2.8-4 for ... Feb 20 2018, 09:50 AM gereed75 Aha, great to hear from some one that’s been the... Feb 20 2018, 10:09 AM gothspeed Twin plugs allows the mixture to burn quicker whic... Feb 20 2018, 12:28 PM |
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