 2,7 CIS conversion, How to fit entire CIS system to 914 |
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| tomemek |
 Nov 14 2025, 02:18 AM
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#1
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Newbie  Group: Members Posts: 3 Joined: 7-January 22 From: NY Member No.: 26,224 Region Association: None  |
I need your help.
I'm in the process of converting a 1.8 to a 911s 2.7 cis. I'm using a 914/6 Maddogs bulkhead motor mount: https://maddogsmotorsports.com/shop/ols/pro...ead-motor-mount I know it will be difficult to fit the air filter and throttle body from the CIS, but I don't want to cut the trunk bulkhead. Please advise how you fit the entire CIS injection system into the 914. Thank you |
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| 930cabman |
Nov 14 2025, 05:58 AM
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#2
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Advanced Member Group: Members Posts: 4,329 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States 
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(IMG:style_emoticons/default/welcome.png)
Great start to the world of 914 I recently went this route, but used twin Webers and also the Maddog OEM style mount She's a beast |
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| Steve |
Nov 14 2025, 08:05 AM
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#3
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914 Guru Group: Members Posts: 5,975 Joined: 14-June 03 From: Laguna Niguel, CA Member No.: 822 Region Association: Southern California
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Check out this thread
http://www.914world.com/bbs2/index.php?sho...=339906&hl= |
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| Robarabian |
Nov 14 2025, 08:46 AM
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#4
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914 A Roo Group: Members Posts: 725 Joined: 11-February 19 From: Simi Valley, Kalifornia Member No.: 22,865 Region Association: Southern California
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They do fit, Airbox and all. THe mount you are using may prevent that. I used the Naro style mount. I have since converted to triple webers but it fit.
The builder before me that had it on CIS did notch a very small area for the fuel distributor fuel line to clear. It was minor. There is another member here with a white car (can't remember his darn name, in the San Diego, CA area that has one that is extremely well done). CIS airbox and all.  |
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| tomemek |
Nov 16 2025, 08:08 AM
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#5
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Newbie Group: Members Posts: 3 Joined: 7-January 22 From: NY Member No.: 26,224 Region Association: None |
Thanks for all the replies.
My CIS is the most complex and takes up a lot of space. Does anyone have experience installing this exact type of CIS in a 914? Attached thumbnail(s) 
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| tomemek |
Nov 16 2025, 08:09 AM
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#6
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Newbie Group: Members Posts: 3 Joined: 7-January 22 From: NY Member No.: 26,224 Region Association: None |
And second shot
Attached thumbnail(s) 
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| burton73 |
Nov 17 2025, 01:06 PM
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#7
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Senior member, and old dude Group: Members Posts: 3,910 Joined: 2-January 07 From: Los Angeles Member No.: 7,414 Region Association: Southern California
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There are a few guys that have factory CIS in their cars with 6s. I some how remember that a couple of them had ground down the rubber boot in the area that I have shown in green for clearance for the Eng lid. Just a old memory I have for what it is worth. I believe @ VegasRacer has one in his Elvira car with a 3.0
I hope this will help it was just around 3/8. If that boot leaks, the car will not start Best Bob B  |
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| Nate W |
Nov 17 2025, 04:33 PM
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#8
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Member Group: Members Posts: 97 Joined: 23-February 21 From: Oceanside, Ca Member No.: 25,250 Region Association: Southern California
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 I have almost your same engine in my 914 (1974 2.7 CIS). To me it looks like you have the correct fuel distributor to just barely fit without cutting the trunk firewall (see picture above). Hopefully you already know that you will need to cut off the trunk latch part in the engine compartment (not just the latch that unbolts but the whole thing), engine won’t fit other wise. Please feel free to reach out with any questions, I can send you the wiring diagram I made to make the engine plug and play with 914 wiring harness and 2.7 engine harness Nate Attached thumbnail(s) 
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| Nate W |
Nov 17 2025, 04:36 PM
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#9
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Member Group: Members Posts: 97 Joined: 23-February 21 From: Oceanside, Ca Member No.: 25,250 Region Association: Southern California
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 more pics if they help |
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| Nate W |
Nov 17 2025, 09:34 PM
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#10
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Member Group: Members Posts: 97 Joined: 23-February 21 From: Oceanside, Ca Member No.: 25,250 Region Association: Southern California
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Also I am running the mad dog mount with my 2.7 CIS engine. Set the mount as low as you can. The one issue I do see with yours is that grey elbow coming off the black rubber “peanut” boot, mine doesn’t have that and it looks like it might be in the way. Might have to see if you can eliminate that somehow and go with earlier style boot
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| live free & drive |
Nov 18 2025, 06:37 AM
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#11
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Member Group: Members Posts: 208 Joined: 29-June 16 From: New Hampshire Member No.: 20,159 Region Association: None
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The NARO mount moves the engine 0.50" forward and 0.825" downward - maybe this give you the clearance you need. You would need to find an uninstalled NARO mount which should be possible.
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