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Registered User
Join Date: May 2015
Posts: 971
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VDO Tell Tale Boost Gauge
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Registered User
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If you don't need the tell tale you can buy a new gauge from North Hollywood Speedometer (NHS). They were about $350 3 or 4 years ago...now maybe more.
Put a want to buy (WTB) ad here and see if anyone wants to give one up for less. Rahl |
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Registered User
Join Date: May 2015
Posts: 971
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VDO Tell Tale Boost Gauge
I want the Tell Tale. I know that they are essentially the same gauge but the Tell Tale looks so much more like a tool than the non Tell Tale. I guess it's this functionality that attracts me to this aftermarket gauge.
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Registered User
Join Date: Mar 2016
Posts: 1,296
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Good luck
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Registered User
Join Date: Jun 2014
Posts: 498
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They are for sale,i found 2 here on Pelican.
And for less the you are willing to spend. Had them restored by a ex VDO employee. Still try to figure out how to hook them up to a 76 Turbo tough. ![]() |
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Crotchety Old Bastard
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I bought 2 of those back in the day and both taddle tails broke within a year. Won't buy another.
__________________
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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Join Date: Jun 2014
Posts: 498
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Registered User
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Dwerkz,
I teed into the line from my throttle body on the back side IIRC. Rahl |
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Registered User
Join Date: Jun 2014
Posts: 498
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Thx,i am having this intake.
Its correct for a 76'but in the past the tread was made for running a electric boost meter. Would like to make something to use it there. I am wondering how this tell tale gauge was hooked up at a 934. Was it also at the back straight in to the tube,or trough a other connection? ![]() |
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Crotchety Old Bastard
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Here is how/where I had mine connected, in place of the OEM boost sender on the intake/BOV. Used stainless hose to the cockpit.
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__________________
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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Registered User
Join Date: May 2015
Posts: 971
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VDO Tell Tale Boost Gauge
Just bought one off a pelican NOS with reset key. Well now I'm excited my 930 has got some goodies this year. Sports seats, Momo prototipo and now this Tell Tale. I'm keeping all the stock items stored safely in my "Porsche Room" (mostly books magazines and posters). Anyhow I'll add pictures in the coming days.
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Registered User
Join Date: Jul 2006
Location: S. Florida
Posts: 7,192
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Buy the black and white plastic check valve with a 8mm hose fitting for the brake booster and hook it up to that.. or T into the rubber hose where it connects to the steel pipe in the trunk below the cowl near the center. It's the same pipe that goes all the way through the center tunnel to the back.
Works the same and simpler than running another hose to the motor. |
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Registered User
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Dwerkz, you might ask, user name Blackjack21. I think that is his correct user name. He has a rich history of Porsche race cars.
Rahl |
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Registered User
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JFairman,
He has a 1976 930...no brake booster in the 75, 76 and 77 year cars. He needs to go from the engine compartment. Brian Bodart has a good solution. DWerkz, you may want to grind off that bung and weld it back up to look like original. If you keep you eyes on e-bay long enough eventually one will show up. $500-$2,000 depending on how lucky you get. Rahl |
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Registered User
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Boost gauge install
Dwerkz,
I put a brass "T" fitting in the line from the bottom of the Throttle Body to the WUR. then ran another line from the "T" down the top of the transmission to the shift linkage tunnel and up to the front of the tunnel under the dash. Picture bight be upsidedown? ![]() Rahl |
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Registered User
Join Date: Feb 2009
Location: Park Hills, KY
Posts: 1,384
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I have a 2.0bar version I am willing to sell. still has the telltale but no key.
came out of a non-running 930 conversion, so no idea if it is in perfect operating shape or not. never tested. I am planning to install a combo boost and AFR gauge where it was in the 'clock' opening.
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Bob Cox 84 928S, Ruby Red linen/brown interior - preferred DD 85 911 Targa, White Gold/brown int - retired from track. 86 944 turbo my new DE/track car. 78 930 clone project car. |
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Registered User
Join Date: Sep 2010
Posts: 243
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Quote:
I collected some years ago an early style 77 welded up manifold that now appears as a 76 manifold. I need to weld that flange back on to get to 77 model, and it looks like you have to grind yours off and weld smooth surface to get to 76 model. Being magnesium it is not that easy. Maybe we should exhange... Example pics on the different models 76 ![]() Early 77 ![]() Rest of 77 ![]() I also was looking for a tail tale gauge for long time, ended up buying one on ebay for $800 (Auch!!) including the key. You mount the hoses just as with any other Boost guage. Btw 75, 76 did not have brake booster, 77 did. |
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Registered User
Join Date: May 2015
Posts: 971
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VDO Tell Tale Boost Gauge
Quote:
I bought one from a Pelican NOS with reset key and install kit. My 930 is a 79. I'm wondering how you would T into the brake booster line. Also this is a very important vacuum line so is it dangerous to run the gauge from this line (safety). I'm interested in the T into the rubber pipe at the bottom of the cowl option. Where is this steal pipe located? Does it matter if the T is brass or plastic? Where is a good place to find a suitable T? Napa ect? Sent from my iPhone using Tapatalk |
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Registered User
Join Date: Feb 2009
Location: Park Hills, KY
Posts: 1,384
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I got several PMs asking about this. as I cannot add pics to the PM replies I'll post some here.
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__________________
Bob Cox 84 928S, Ruby Red linen/brown interior - preferred DD 85 911 Targa, White Gold/brown int - retired from track. 86 944 turbo my new DE/track car. 78 930 clone project car. |
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Crotchety Old Bastard
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Why are these things so expensive? It's just a crappy simple boost gage, more toy than useful. I was never impressed with the two that I had. Also if they are connected to the BOV assembly you will only be recording boost spikes during chop throttle events. To record true engine boost you need to run the boost line to the intake below the throttle plate.
__________________
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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