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> 1980 model 911 3.0 in 914, Flywheel question and others?
porschetub
post Feb 6 2016, 10:44 PM
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Hi guys ,for those that have an SC 3.0 in these cars I need the following info as I have been offered for a great price a complete motor with 123K kms documented history.
Anyone got over the situation of clearing the engine lid over the injection system,my lid is sans rain tray and setup for a six already,if that means s#it all.
Been on PMS site and thought there was a conversion flywheel for this engine swap?as silly as it sounds can I engineer a 215mm flywheel to nine bolt crank and fit that,torque figures are not hugely different from say a 911T or 911E of that era.
Flame if you like but I don't want to go to the larger clutch/flywheel and the changes required to get the thrust bearing movement corrected,as in push clutch to pull clutch action.
I feel that I would be happy with this motor the owner is known to me and has a good reputation for honesty,his motivation for selling is an upgrade to a 3.2 in his 76 911s and then finding it needs a fully top overhaul,his motivation for selling the 3.0.
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Dave_Darling
post Feb 6 2016, 11:07 PM
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The "conversion flywheel" is a 901-style flywheel with the nine-bolt mounting pattern, that's all. There may be some Special Magic done with the ring gear, but I don't think that's on the 3.0 motor. A 3.2 would need the stuff to trigger the DME, but again not an issue for the 3.0's CIS.

The CIS can be flipped around 180 degrees and will fit with some extra work. New hard fuel distribution lines would need to be bent, but that is quite doable. The engine lid latch may need to be removed, possibly replaced with racing-style tie-downs.

Other people have fit the CIS by notching the rear trunk wall (a la the Chevy conversions) or even by notching and gluing patches into the CIS boot itself!

Oh, and move the engine down as far as practical when you install it, to make sure there's as much room for the FI parts as possible.

--DD
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JmuRiz
post Feb 8 2016, 10:13 AM
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QUOTE(Dave_Darling @ Feb 6 2016, 09:07 PM) *

...The CIS can be flipped around 180 degrees and will fit with some extra work. New hard fuel distribution lines would need to be bent, but that is quite doable. The engine lid latch may need to be removed, possibly replaced with racing-style tie-downs....

NEver heard of that idea, that's kind of cool and may be worth looking into.

I'm forever debating keeping CIS or going to the good carbs I have on my bench. ITBs running EFI would be the best but they are $3-4k...ouch.

How is the drive-ability and throttle response in a 914 with CIS?
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Posts in this topic
porschetub   1980 model 911 3.0 in 914   Feb 6 2016, 10:44 PM
Dave_Darling   The "conversion flywheel" is a 901-style...   Feb 6 2016, 11:07 PM
JmuRiz   ...The CIS can be flipped around 180 degrees and ...   Feb 8 2016, 10:13 AM
mepstein   ...The CIS can be flipped around 180 degrees and...   Feb 8 2016, 10:34 AM
Mark Henry   ...The CIS can be flipped around 180 degrees and...   Feb 8 2016, 10:53 AM
porschetub   ...The CIS can be flipped around 180 degrees and...   Feb 8 2016, 08:11 PM
Mark Henry   [quote name='JmuRiz' post='2300184' date='Feb 9 2...   Feb 8 2016, 08:51 PM
boxsterfan   Do the 3.0L but put ITB's on it and run with M...   Feb 7 2016, 12:01 AM
porschetub   Do the 3.0L but put ITB's on it and run with ...   Feb 7 2016, 02:32 AM
rhodyguy   Thousands. Not just a couple either.   Feb 7 2016, 11:37 AM
Jeffs9146   Here is what I did with my CIS! No cutting. N...   Feb 7 2016, 12:23 PM
porschetub   Here is what I did with my CIS! No cutting. ...   Feb 7 2016, 05:50 PM
mepstein   PMS gets it all from kep - Kennedy engeneering pro...   Feb 7 2016, 12:40 PM
rgalla9146   You have machine shop skill. The clutch/flywh...   Feb 7 2016, 03:02 PM
boxsterfan   Never tried it myself. http://www.bitzracing.com/...   Feb 7 2016, 10:56 PM
Mark Henry   I built my own clutch set-up the flywheel is stock...   Feb 7 2016, 11:15 PM
Mark Henry   The only thing I'll say is bad with the KEP or...   Feb 7 2016, 11:25 PM
Mark Henry   Been on PMS site and thought there was a convers...   Feb 7 2016, 11:39 PM
Jeffs9146   Sort of! I used a grinder and removed the f...   Feb 8 2016, 01:06 PM
Series9   Here's the thing about CIS: It basically has ...   Feb 8 2016, 09:08 PM
Jeffs9146   Mine is built to drive so I wanted the ability to ...   Feb 8 2016, 11:00 PM
porschetub   What can I say the response has been amazing thank...   Feb 9 2016, 12:43 AM
porschetub   What can I say the response has been amazing than...   Feb 10 2016, 01:02 AM


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