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The nuts holding the case halves together look like regular 8x1.25mm nuts. The original case half nuts are the self locking all steel ones where the rounded off top edge is squished together a little to make friction on the threads once the nut is threaded all the way on the stud. I've heard them called "prevailing torque" lock nuts.

I've seen nylocks used there too.
Hopefully the ones you have on there will not eventually vibrate loose. Maybe they were installed with loctite so that should work too.
Otherwise you could remove one nut at a time and replace it with a prevailing torque or nylock nut for peace of mind and for it to look correct.

Good luck with it!
Old 12-18-2015, 10:19 AM
  Pelican Parts Technical Article Directory    Reply With Quote #281 (permalink)
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Quote:
Originally Posted by JFairman View Post
The nuts holding the case halves together look like regular 8x1.25mm nuts. The original case half nuts are the self locking all steel ones where the rounded off top edge is squished together a little to make friction on the threads once the nut is threaded all the way on the stud. I've heard them called "prevailing torque" lock nuts.

I've seen nylocks used there too.
Hopefully the ones you have on there will not eventually vibrate loose. Maybe they were installed with loctite so that should work too.
Otherwise you could remove one nut at a time and replace it with a prevailing torque or nylock nut for peace of mind and for it to look correct.

Good luck with it!
The builder of my motor knows what he's doing, so he has my full trust. Considering he's been maintaining two 935s and a 962 (on top of many 930s) - none of the have shaken apart on the vintage race circuit or road.
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Old 12-18-2015, 10:40 AM
  Pelican Parts Technical Article Directory    Reply With Quote #282 (permalink)
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They're probably installed with a drop of red loctite on the threads then.

Race mechanics and aircraft mechanics use red loctite or safety wire through little holes drilled in the nuts.
You don't want to loose a race or crash a plane because a nut came loose
Old 12-18-2015, 11:08 AM
  Pelican Parts Technical Article Directory    Reply With Quote #283 (permalink)
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^ Tru Dat!
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- 1965 911
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- 1980 911SC Targa
- 1979 930
Old 12-18-2015, 11:19 AM
  Pelican Parts Technical Article Directory    Reply With Quote #284 (permalink)
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Going down a game trail on the slippery slope: decided AAR is a stupid design, so replaced it with a factory 964 turbo IACV. The upshot is no more bu!!$ht idle weirdness.



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- 1965 911
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- 1980 911SC Targa
- 1979 930
Old 12-18-2015, 05:09 PM
  Pelican Parts Technical Article Directory    Reply With Quote #285 (permalink)
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Got the 964 turbo IACV working today. It is just amazing what a luxury a dynamic and responsive idle controller is when you can take temp and throttle position into account.
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- 1980 911SC Targa
- 1979 930
Old 01-06-2016, 01:36 PM
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Yes!

And it'll be that much better again when you update those silly injectors! ;-)
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Old 01-06-2016, 02:10 PM
  Pelican Parts Technical Article Directory    Reply With Quote #287 (permalink)
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Do me a favor. Show me a pic of the most stock looking EFI install you've seen.
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Old 01-06-2016, 02:17 PM
  Pelican Parts Technical Article Directory    Reply With Quote #288 (permalink)
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Your worried about idle and you apparently have not even turned up the boost to a normal level. Where are your priorities?

...and I agree 100% with Chris.
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Old 01-06-2016, 02:45 PM
  Pelican Parts Technical Article Directory    Reply With Quote #289 (permalink)
I would rather be driving
 
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And I can't believe you used the word "Luxury" in reference to a 930.
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Jamie - I can explain it to you. But I can not understand it for you.
71 911T SWT - Sun and Fun Mobile
72 911T project car. "Minne" - A tangy version of tangerine
classicautowerks.com - EFI conversion parts
Old 01-06-2016, 02:47 PM
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You're all colluding against me. I'm wise to your tricks.
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Old 01-06-2016, 03:06 PM
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Quote:
Originally Posted by kenikh View Post
Do me a favor. Show me a pic of the most stock looking EFI install you've seen.
Butt, that clear/woven, soda fountain hose (maybe it's black, not sure) connecting the crank case breather pipe to the oil tank does not look stock, bro - shame on youse!!! Other than that, your engine bay looks entirely OEM (NOT!)!

Last edited by Ronnie's.930; 01-06-2016 at 03:20 PM..
Old 01-06-2016, 03:17 PM
  Pelican Parts Technical Article Directory    Reply With Quote #292 (permalink)
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I'll come clean. I like metal pipes to my fuel injectors. MFI ruined me.
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- 1979 930
Old 01-06-2016, 03:30 PM
  Pelican Parts Technical Article Directory    Reply With Quote #293 (permalink)
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^^^

I'm right there with ya' about liking the look of the dinosaur-tech system. I've got a truck with an old school, International diesel engine that has MFI - always liked how it looks, too.
Old 01-06-2016, 03:44 PM
  Pelican Parts Technical Article Directory    Reply With Quote #294 (permalink)
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Quote:
Originally Posted by jpnovak View Post
Your worried about idle and you apparently have not even turned up the boost to a normal level. Where are your priorities?

...and I agree 100% with Chris.
Woops, I'm so neglectful. I didnt already mention that boost is now at .9 BAR and knock control is operational, as well.

We're also doing FrankenCIS right now on the targa, so will have first hand experience on that very shortly. That experience will inform how we proceed with fueling on the 930.
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Old 01-06-2016, 04:47 PM
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Quote:
Originally Posted by kenikh View Post
Do me a favor. Show me a pic of the most stock looking EFI install you've seen.
Here you go:




Just kidding, this is more OE looking.
Doesn't have your metal fuel lines to all 6 injectors, through.

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Old 01-14-2016, 08:51 AM
  Pelican Parts Technical Article Directory    Reply With Quote #296 (permalink)
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I'm starting to grow weary of Electromotive. Their faulty coil packs fry a friends motor with no recourse. Then this week, my TPS won't post to the CPU, so we upgrade the firmware and voila, the TPS works. The problem? The knock sensors have stopped posting the to CPU. After I went to all the trouble of swapping out the Bosch knock sensors (didn't work) for GM.

WHAT THE FCUK
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Old 01-21-2016, 09:24 PM
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Problem seems to be solved with the knock sensors - a mis-dialed parameter was making the knock sensors shut off at 900 RPM, soooo...that resolved, I drove the car today for the first time on full boost. My impressions are best summarized by:



This was the car, now idling as smoothly as a Hyundai, with a smooth drone of beautiful, Zorky goodness to set the mood:


The AFRs are little lean at idle and before fuel dump from the delay solenoid, but that will be resolved tomorrow.

Bottom line: this is the fastest car I have ever been in and has exceeded all expectations in terms of speed and character. And it isn't even tuned yet.

Happy as a clam:
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- 1965 911
- 1969 911S
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- 1979 930
Old 01-22-2016, 04:22 PM
  Pelican Parts Technical Article Directory    Reply With Quote #298 (permalink)
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sweet - sounds good

upper right bank valves sound a tick loose? (pun intended lol)

next up: ride height 8-)
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Old 01-22-2016, 05:39 PM
  Pelican Parts Technical Article Directory    Reply With Quote #299 (permalink)
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^ just adjusted. Will listen more closely.
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Old 01-22-2016, 05:40 PM
  Pelican Parts Technical Article Directory    Reply With Quote #300 (permalink)
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