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> What's This Hardline Do?, 2.7 Motor
kconway
post Feb 15 2011, 09:36 AM
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What's the purpose of this tube?

2.7 CIS Motor
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gms
post Feb 15 2011, 09:54 AM
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QUOTE(kconway @ Feb 15 2011, 09:36 AM) *

What's the purpose of this tube?

2.7 CIS Motor


Look like air injection into the head for emission control
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Eric_Shea
post Feb 15 2011, 09:56 AM
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(IMG:style_emoticons/default/agree.gif) The dreaded 2.7 thermal motor.
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rgalla9146
post Feb 15 2011, 10:05 AM
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QUOTE(kconway @ Feb 15 2011, 07:36 AM) *

What's the purpose of this tube?

2.7 CIS Motor
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probably pinched off years ago if the air pump is gone.
remove and plug at each head.
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Eric_Shea
post Feb 15 2011, 10:11 AM
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QUOTE
remove and plug at each head


(IMG:style_emoticons/default/agree.gif) 10x1 if I recall. The cap we use for the back of the 914 caliper is perfect for this.
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Scott S
post Feb 15 2011, 10:56 AM
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Ugh. Ask Ferg how much fun that project can be. Buy some dental tools........
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kconway
post Feb 15 2011, 11:02 AM
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Thanks! From the comments, sounds like a motor to stay away from for a conversion?
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Scott S
post Feb 15 2011, 12:17 PM
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There are definitely better - but I am using using a 2.7 for my conversion. The price was right and thankfully all of the 2.7 stuff that needed to be addressed was done by the previous owner (less a couple of exhaust studs!!). Here is pic - I am just a clutch and a set of 914-6 engine tins away from installing it in the car. Hoping for a fun summer! (IMG:style_emoticons/default/driving.gif)


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JmuRiz
post Feb 15 2011, 01:13 PM
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Ooooo, those clear f-glass tins are cool!
You're much further along with your 2.7 than I am.
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Eric_Shea
post Feb 15 2011, 02:24 PM
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QUOTE
sounds like a motor to stay away from for a conversion?


Depends. Buy it right.
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Ferg
post Feb 15 2011, 02:41 PM
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QUOTE(Scott Schroeder @ Feb 15 2011, 09:56 AM) *

Ugh. Ask Ferg how much fun that project can be. Buy some dental tools........



(IMG:style_emoticons/default/headbang.gif) those tubes that go into the head are super thin, as in hollow, anything more than a "tiny" effort to remove them will result in them snapping leaving threads in the head, I had 3 of 6 snap, 2 of those came out with a reverse bit the last one was hell, dental picks and all.
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pcar916
post Feb 15 2011, 02:50 PM
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If you do decide to use that motor there are plugs for those air-injection ports. Engine Builder's Supply used to have 'em but they were available from lots of folks.

I had a really nice 2.7L (Bruce Anderson spec) motor in my 914 when I bought it. It was great fun and built to overcome the limitations of the original. But it'll never have the legs (mileage) that a later motor will. I'd never put less than a 3.2L motor in one now unless a really fun 2.7 cropped up. Any more I'm used to having more torque. Kinda makes going back a bit tough.

To build a 2.7L motor up properly will cost as much or more than a later motor, although the conversion costs differ a little. The magnesium case has to align-bored (and possibly shaved first) and after oil pump updates and other mods you will still get a motor that can't last as long as a newer one. For some years shuffle-pinning was recommended for those cases until it was discovered that there wasn't enough of a "boss" (material surrounding the pin) to keep lots of the cases from cracking at the pin.

All of this said though, the sound of a 2.7 and smaller motor through a sport exhaust or megaphones is impossible to duplicate with a larger motor. I miss it.
Good luck
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Dr Evil
post Feb 15 2011, 05:48 PM
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The 2.7 is a fun and cheap motor. I got one, rebuilt it, did not throw the expensive upgrades into it: newer oil pump, oil fed chain tensioners. The upgrades are better, but not necessary. I got a 74, so no thermal reactor BS to deal with. The 74 is a healthy engine to start with. I rebuilt my engine for less than $3k buy educating myself and seeking out experience vs regurgitated hearsay. Another good thing about a 2.7 is that you do not need an oil cooler. It is the biggest you can go without needing one.
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kconway
post Feb 15 2011, 06:03 PM
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I think I'm going with a 2.4 at this point instead of this one that Ron's hooking me up with...
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RiqueMar
post Feb 15 2011, 06:09 PM
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QUOTE(Dr Evil @ Feb 15 2011, 03:48 PM) *

Another good thing about a 2.7 is that you do not need an oil cooler. It is the biggest you can go without needing one.



I always thought that until about 3.0 you were still safe?
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