 Best Cam for 2056 and Dub Shop EFI? |
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| bkrantz |
 Jul 14 2021, 08:11 PM
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#1
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914 Guru  Group: Members Posts: 8,175 Joined: 3-August 19 From: SW Colorado Member No.: 23,343 Region Association: Rocky Mountains 
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Since I had to tear down my partially built engine (to have the case decked), I have a second chance to choose a cam shaft. This build will be a 2056, target compression ratio of about 8.6:1, and the complete EFI and electronic ignition from the Dub Shop (based on Megasquirt 2).
Any wise suggestions? |
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| BeatNavy |
Jul 15 2021, 03:48 AM
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Certified Professional Scapegoat Group: Members Posts: 2,944 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region
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The cam the type 4 store currently markets for being slightly more aggressive yet compatible with FI is the 9590. I've had one in a 2056 with D-Jet and now in my 2270 with microsquirt. It's excellent, with the possible exception that the first 30 seconds of a cold start require some throttle feathering. It really wants more air than the TB can give it when stone cold.
On the 2056 I was running 8.6 and the 2270 is 9.0. Same situation on each, although I think Jake said it really isn't designed for CR above 8.5 / 8.6. I've seen others say similar things, so it's likely not just me. |
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| ClayPerrine |
Jul 15 2021, 07:49 AM
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#3
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Life's been good to me so far..... Group: Admin Posts: 15,950 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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QUOTE(BeatNavy @ Jul 15 2021, 04:48 AM)  The cam the type 4 store currently markets for being slightly more aggressive yet compatible with FI is the 9590. I've had one in a 2056 with D-Jet and now in my 2270 with microsquirt. It's excellent, with the possible exception that the first 30 seconds of a cold start require some throttle feathering. It really wants more air than the TB can give it when stone cold. On the 2056 I was running 8.6 and the 2270 is 9.0. Same situation on each, although I think Jake said it really isn't designed for CR above 8.5 / 8.6. I've seen others say similar things, so it's likely not just me. (IMG:style_emoticons/default/agree.gif) Put one of the Raby 9590 cam kits in Betty's motor. It ran great and pulled strong, but didn't want to idle dead cold. Feathering the throttle for the first minute always worked. Clay |
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Posts in this topic
bkrantz Best Cam for 2056 and Dub Shop EFI? Jul 14 2021, 08:11 PM
EdwardBlume 9590 Raby / LN Engineering- $$$... Jul 14 2021, 10:59 PM euro911 I ran a Raby 9580 with 9.5:1 C/R and IDF-40 carbs ... Jul 15 2021, 01:07 AM
914Sixer Elgin 330-1 might work. Click to open Jul 15 2021, 06:00 AM barefoot I'm using WEB #494 cam & tappets with carb... Jul 15 2021, 11:23 AM colingreene Did you ask the dub shop?
Id go for 9.0 compressi... Jul 15 2021, 07:48 PM bkrantz Thanks, everyone. I have twin IDF throttle bodies... Jul 15 2021, 10:15 PM djway The T4 in my notchback 78x96 9.0to1 has the Webcam... Jul 15 2021, 11:28 PM JamesM The nice thing about Megasquirt is one way or anot... Jul 16 2021, 08:53 AM
bkrantz At the risk of blowing this discussion wide open, ... Jul 16 2021, 07:53 PM djway
At the risk of blowing this discussion wide open,... Jul 16 2021, 08:14 PM |
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