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16Volt 16Volt is offline
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Join Date: Oct 2013
Location: Seattle, WA
Posts: 987
The black hole, $12 at a time.

When we last spoke I was basking in the glow of having taken a perfectly running 911 Turbo and converted it to a great example of why I should not have access to tools. Or the internet. It was a modest repair, a single 3.5ft piece of vacuum line. Around $2 bucks worth to be exact. That was Sunday of last week and between then and Friday I will be the first to admit, things may have gone a bit awry. I am not entirely sure where I turned the corner but it would appear I was doing it in a full opposite lock drift.

After talking briefly with PatrickVR6 and some Pelicanites I decided that “While You’re In There”(WYIT) I should remove the decel valve. This valves purpose is oft argued but the short version is that it functions as a buffer between the diverter valve and intake which causes revs to fall more slowly. Whether for emissions or to provide a quicker re-spool between shifts it makes removing the upper manifold a real pain. It can also be yet another potential source of vacuum leaks. None of that really convinced me to bin a perfectly good part though. It was the cautions/warnings and general protest from some of the Porsche folks. Their predicted outcome was dire:

1. Removal of the valve could cause the diverter to make a whoosh noise when lifting out of boost.
2. Removal of the valve will cause a dramatic increase in exhaust noise on deceleration, popping, crackling, gurgles etc.
3. Revs will fall between shifts more quickly and not hang up increasing throttle response.

These were serious concerns. If I did this then it was entirely possible that the 930 would sound…..hairy, uncivilized maybe even…..racey. Well this is certainly not for me. No sir, I hate race car stuff. Think of the hit to the resale value….think of the children.

Soooo...different strokes for different folks and all....deleting the valve seemed easy enough at first, in hindsight my new found Porsche mechanic status/glow perhaps clouded my judgment. After consulting the Porsche Internet Quorum I had a plan. I needed parts, namely vacuum port caps and hose clamps. So I guess this was going to cost a little more money than $2 bucks. When I had the Scirocco the only thing you could buy on was books, I knew that because I worked there. Nowadays however Amazon is your window to cheap Chinese parts and tools and if your have Amazon Prime then….if you own stock in Harbor Freight, sell it.

The order began innocently enough:

80pc vacuum cap assortment (hey, even comes in a neat case) — $8
8pc Bypass cap assortment (just in case I need some bigger caps) — $6 Porsche service is super cheap right?
Hose clamps from my buddies shop (non-pinching type, hey I may as well get 3 of each and build a supply, you never know right?) — $35
Then things got a little hazy….

4. Knipex high leverage dikes (made in Germany, have to have these to cut that ONE hard to reach annoying Oetiker clamp) — $23
5. 4pc Stubby screwdriver set (finally I will be able to tighten both hoses on the back the airbox) — $6

And now we blast completely off the rails….

6. 11inch long reach long nose pliers (I could use these to put the vacuum lines on the back of the motor w/o removing the damn airbox which has hoses I can’t tighten because my screwdrivers are all too long) — $9
7. 15inch long reach needle nose vise grips (these will be awesome to clamp the stripped screw/nut that is stopping me from replacing the tail light gaskets) — $13
8. 8oz illy Moka coffee (hey, Im here right, gonna need coffee) — $16
9. 8x6 Aluminum face plate kit (need something to mount the PLX gauge modules to for the AFR and boost gauge install) — $20

Stop me before I OneClick again!

10. Mityvac MV8000 Vacuum Tester and Bleeder kit (because of all the vacuum testing I do……) — $35
11. Joby Gorilla Torch with Flexible magnetic legs (can never have too much light) — $25

I was in full on project supply binge mode. Then it happened. When I should have been dialing my sponsor I instead went to Pelican parts. I am weak.

12. 911 license plate light assembly x2 (when working on the motor every time I look down I see that one cracked housing, so annoying) — $36
13. Intake boot seal (WYIT) — $16
14. Pressure pipe seal (WYIT)- $10
15. Pressure pip to intercooler seal (WYIT) — $11
16. Turbo outlet to pressure pipe (WYIT) — $10
17. Pressure pipe o-ring (WYIT) — $4
18. Vacuum connector 4way (no ****** idea, it was in the turbo parts section) — $5
19. O-rings x2 (No clue…I was just clicking randomly at this point) — $8

Total — Damn near $300 bucks with tax/shipping.

I collapsed, spent (literally). A single vacuum line replacement project had become too big to fail.

To be clear, this was completely and utterly my own fault. I needed 8 bucks worth of vacuum line, I bought $292 worth of scope creep.

In my next installment I will go into detail how $300 bucks of good intentions left me on the side of the road with a dead 911. Thanks for tuning in, I am going to make some coffee and hide some boxes before the girlfriend comes home.

IMG_5747 by thecrashingdoor, on Flickr

IMG_5750 by thecrashingdoor, on Flickr

IMG_5745 by thecrashingdoor, on Flickr

IMG_5754 by thecrashingdoor, on Flickr
- 86 Porsche 930 - Mr.Hyde
- 86 BMW 635CSi - Dr.Jeykell
- 2006 Infiniti M45 Sport

Last edited by 16Volt; 03-04-2014 at 03:26 PM..
Old 03-04-2014, 02:42 PM
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