Twin plug /4, ROI? |
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Twin plug /4, ROI? |
r_towle |
Feb 17 2018, 04:13 PM
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#1
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Custom Member Group: Members Posts: 24,591 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
Has anyone done testing to understand the Net difference between single and twin plug on a /4?
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Bills914-4 |
Feb 20 2018, 09:50 AM
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#2
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Member Group: Members Posts: 310 Joined: 1-March 08 From: suburbs of Miami FL. Member No.: 8,762 Region Association: South East States |
Hello, I've been running a twinplug 2.8-4 for a few years now, it was a process to
put together , I went from 48 dell carbs & unilite distributor @ 9-1 c.r. & smaller cam, to MS2extra (megasquirt2extra) with sequential injection & ignition 11-1 c.r. & bigger cam (320* dur. ) with twinplugs (IMG:style_emoticons/default/smile.gif) , I've never dyno'ed this motor so I don't know if it makes more HP , I kinda doubt it , it does give me more torque , which really helps my bottomend with the cam I run, it runs COOLER , uses less timing ,no more pinging, single plug version I used to run as much as 32* timing = heat & pinging, I even tried W.I. (water injection) to much hassle not worth the return, so next option was twinplug (IMG:style_emoticons/default/smile.gif) , Bill D. sorry I never finished this thread, Bill's 2.8 -4 Twin Plug Thread, 48x38 twin plug conversion http://www.914world.com/bbs2/index.php?sho...225696&st=0 comment by jake ; What you'll find with twin plugs isn't so much more WOT power on the dyno and bigger numbers, but mostly insane throttle response and unreal torque gains below 4K RPM, especially with the larger bore size that needs all the help with flame propagation that it can get. |
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