They fit the Fiero gauge cluster look cool on a boosted engine. If used it's difficult to read the exact boost going into the engine as it provides a 180° scale.. I believe that guage is calibrated to the map sensor.
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
They fit the Fiero gauge cluster look cool on a boosted engine.
+2
I think I said it in the other thread: If I had one of those gauges looking for a home I would consider turbocharging my car just so I could use the gauge!
I think I said it in the other thread: If I had one of those gauges looking for a home I would consider turbocharging my car just so I could use the gauge!
Ugh, I know... that's the problem right now.
I'm trying (not) to now go buy a the Sunbird Turbo engine...
When I saw that the Sunbird thread I googled Sunbird replacement guages. They exist, new.
Well, this wouldn't be the first dumb thing I've done before in my life, haha...
But I'm going to have to call your bluff... are you sure you weren't looking at reproduction 70s Sunbird gauges? I just looked and didn't see the Turbo gauges for the 80s Sunbird...
Originally posted by 82-T/A [At Work]: But I'm going to have to call your bluff... are you sure you weren't looking at reproduction 70s Sunbird gauges? I just looked and didn't see the Turbo gauges for the 80s Sunbird...
They were not OEM, but look the same.
quote
Originally posted by mmeyer86gt/gtp: this is not a sunbird gauge. It is a typhoon / syclone gauge. FYI no need for the potentiometer.
Yes, can hook up to any engine as a vacuum gauge. Like one of those old MPG efficiency gauges hypermilers use.
The Typhoon/Syclone, and Sunbird turbo engines all used 2 bar MAP sensors. If these gauges read off of the MAP signal as I suspect, be aware normally aspirated engines use a 1 BAP MAP that uses a different output scale. Your readings will be off by a factor of two.
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
Yep, Sy/Ty gauge. These are electronic and not mechanical so you can't hook them up direct. It's as Dennis said, they run off a two-bar MAP sensor. In my Sy, I have a three-bar sensor and matching chip so my computer gets the correct reading, but my dash only shows half of actual boost/vac.
Yep, Sy/Ty gauge. These are electronic and not mechanical so you can't hook them up direct. It's as Dennis said, they run off a two-bar MAP sensor. In my Sy, I have a three-bar sensor and matching chip so my computer gets the correct reading, but my dash only shows half of actual boost/vac.
The Fiero gauges are electronic as well, not mechanical... what did you mean by not mechanical?
The Fiero gauges are electronic as well, not mechanical... what did you mean by not mechanical
Thanks!
Mechanical gauges use a direct engine connection. Electronic is connection to a sensor. The Ty/Sy, Turbo Sunbird, GN and 3800SC boost gauges are all electronic meaning that they receive inputs from sensor signals.Now with electronic connections you must have a sensor capable of sending the right signal to the gauge. You just can't use any sensor but one particular to that gauge for the right reading.
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
Yep, what Dennis said. Someone earlier said they could be hooked up to any engine to read vacuum but that's not possible if the engine doesn't have a pressure sensor whereas a mechanical one hooks directly to a vacuum source on the engine with a tube that runs to the back of the gauge itself and uses a diaphragm or spring to move the needle.
As far as GM's boosted 80's and early 90's stuff, I think the '89 Turbo Trans Am was the only one that used a three-bar MAP from the factory.
