Home » Public Forums » GMCnet » Speedometer Size (New Speedometer for Our Dash Hole)
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| Re: [GMCnet] Speedometer Size [message #278245 is a reply to message #278241] |
Sat, 23 May 2015 11:53   |
Olly Schmidt
Messages: 1265
Registered: February 2014
Location: Germany and Scottsville, ...
Karma: 8
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Senior Member |
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Larry,
> George Beckman wrote on Sat, 23 May 2015 10:24
>> I will try this in a new topic as I think it got lost in the programmable speedometer topic.
>>
>> So, does a 4.5" speedometer fit in the original dash? I am vaguely looking at a VSS unit. How much gymnastics to get the old one out and new one
>> in?
>>
>> Does something like this fit? http://www.speedhut.com/gauge/GR4.5-SPEEDO-01/1/Speedometer-Gauge-120mph-programmable
> As long as you are doing this, why not go to the GPS type of speedo? No cables, no calibration.... Just say'n...
No speed display in tunnels, near skyscrapers and in forests with bad
reception. Just say'n... ;)
--
Best regards
Peer Oliver Schmidt
PGP Key ID: 0x83E1C2EA
'76a Eleganza II, VA
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Best regards
Olly Schmidt
PGP Key ID: 0x18a9 3a1f 4196 bf22
'76a Eleganza II, VA
'73 Sequoia, SH, Germany
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| Re: Speedometer Size [message #278247 is a reply to message #278236] |
Sat, 23 May 2015 12:05 |
cbryan
Messages: 451
Registered: May 2012
Location: Ennis, Texas
Karma: 3
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Senior Member |
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George,
The 85 mph VDO programmable I bought has an inner dial of KPH on it. There's one (never installed) for less than a hundred, make offer on that auction site. I bought mine for much less as they were closed out. Looks like it will work fine, (Ken Henderson has a 120 mph model) I note the gauge is a little bit smaller than the one you are looking at, the inner dial is set into the speedometer just a little too much, I think. Otherwise, I saw one working fine in an airport transporter yesterday, they light up nice. 85 mph should do it for as fast as I ever expect to go. Ken Henderson has one that goes to 120. I'm a little surprised he didn't go with the 160 model. I bought a boat tach, again electronic, which matches pretty much (white pointer) but goes only to 4500 RPM, again high enough for me.
Carey
Carey from Ennis, Texas
78 Royale, 500 Cadillac, Rance Baxter EFI.
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| Re: [GMCnet] Speedometer Size [message #278255 is a reply to message #278247] |
Sat, 23 May 2015 18:15 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Jeeez!, Carey, you make me sound like the speed demon here! I generally
just run with the traffic -- trying to get off of the interstates as
quickly as possible. I'm not in CanOTomatoes' class a-tall!
Oh, yeah, and just WHY is it that you've got a Cad500 too??? :-)
Ken H.
On Sat, May 23, 2015 at 1:05 PM, Carey Bryan wrote:
> George,
>
> The 85 mph VDO programmable I bought has an inner dial of KPH on it.
> There's one (never installed) for less than a hundred, make offer on that
> auction site. I bought mine for much less as they were closed out. Looks
> like it will work fine, (Ken Henderson has a 120 mph model) I note the
> gauge is a little bit smaller than the one you are looking at, the inner
> dial is set into the speedometer just a little too much, I think.
> Otherwise,
> I saw one working fine in an airport transporter yesterday, they light up
> nice. 85 mph should do it for as fast as I ever expect to go. Ken
> Henderson has one that goes to 120. I'm a little surprised he didn't go
> with the 160 model. I bought a boat tach, again electronic, which matches
> pretty much (white pointer) but goes only to 4500 RPM, again high enough
> for me.
>
> Carey
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Speedometer Size [message #278259 is a reply to message #278255] |
Sat, 23 May 2015 20:14 |
cbryan
Messages: 451
Registered: May 2012
Location: Ennis, Texas
Karma: 3
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Senior Member |
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Ken,
I thought you would like that post about the 160 mph speedometer. Got to see whether you are stuck on the next honey-do cabinet painting or actually working on your GMC, or like me, lurking!
I bought the 500 because it had port fuel injection, and was cool, and I was always a poor boy who couldn't afford a Cadillac otherwise.
I'm not really sorry I bought the 500, but it seems another round of R&D will be required before Bob de Kruyff stops calling it a "poor old" engine. I have my blood up now and want to make it run for the long haul, but have been content to have you do all the R&D so far. Let's see....New engine, pulled twice because of crankshaft thrust bearing premature wear. Another new engine, ran pretty well, but broke valve train twice, and sunk an exhaust valve. New heads, camshaft, aftermarket shaft rocker setup, now overheating with bad fan clutch. Keep up the R&D, Ken. I am half inclined to believe that the valve pedestals can be made to work using the "tool steel" pedestal approach, but it wouldn't save much money. Oh, yes, now I won't be tempted to use brass nuts on the exhaust manifold studs. I was gonna do that, for sure, until your report on yours.
It's a hard way to find out that port fuel injection won't be the magic pill that gives you 500 horsepower, and 50% greater mileage per gallon. It's a hard way to find out that you have to pay attention to tip-in fuel enrichment, cold start enrichment, idle spark advance, and what is this all about fuel sticking to the walls of the manifold? I found out also, that I had a bad injector, which wasn't delivering enough fuel. Upped the duty cycle and the plug looked better. You don't mean to tell me that one lean cylinder on a sequential port injected setup will make all the rest rich, because the wideband o2 sensor tries to even out all the cylinders? I richened up that injector and found the rest of the plugs went from dark brown to almost white, while that enriched plug went to an off-white color from blinding white. Not a very scientific way to tune a fuel injected engine. With the changes in the acceleration enrichment, the cold start regime, and all the other things I am finding out looking at the software, I am having a blast. I have to pull the heads next, that is down the honey-do list. I saved lots of money on the purchase, only to buy book after book on electronic fuel injection, Big Inch Caddy, etc. Best not to tote up the cost. And, I found a bunch of very nice people nationwide who share the same malady.
And, I am afraid to floor it for any length of time, until I get the WOT enrichment set. So, in summary, I wanted a hot rod, but now want a stone axe reliable, economic no-problem engine that doesn't smell. (People following me said it smelled rich). Note I cured it by enrichening one injector. Counter intuitive. The more problems I have, the more I don't want some other brand motorhome. What is this disease?
It has to stop raining for a few days now. It seems all of Texas has been uprooted and sent to the Pacific Northwest. I swear it rains every day. Gutters overflowed today for instance. Another couple of inches. Tried to cut the grass yesterday before it rained. The grass had dried out, but now I have mud tracks down the yard, because of the muddy conditions.
Very best regards, Ken.
Carey
Carey from Ennis, Texas
78 Royale, 500 Cadillac, Rance Baxter EFI.
[Updated on: Sat, 23 May 2015 20:50] Report message to a moderator |
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| Re: Speedometer Size [message #278261 is a reply to message #278254] |
Sat, 23 May 2015 20:42 |
cbryan
Messages: 451
Registered: May 2012
Location: Ennis, Texas
Karma: 3
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Senior Member |
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Dan,
I think you might be able to reset that programmable speedometer from miles to kilometers because of the very wide accommodation it makes for different pulses per mile. I think you would just go hold the trip odometer button, turn on the ignition, the lcd readout should say, "set" or something like that, drive out, press it again at the start of a measured kilometer, press it again at the end, and then it would be accurate in KPH, the 120 top speed would be more within reason, and as a bonus, your odometer would measure in kilometers, very accurately. If you found it off a few percent, there is a way to tweak the correction factor. It has a trip odometer, too, which could measure in kilometers, very slick. You could reset it crossing the border, too. But then, thinking about it, it would start adding miles to your kilometer odometer, making it more "miles" by a factor of 8 to 5. I don't think there is an easy, documented way to reset the odometer to zero.
Carey
Carey from Ennis, Texas
78 Royale, 500 Cadillac, Rance Baxter EFI.
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| Re: [GMCnet] Speedometer Size [message #278266 is a reply to message #278259] |
Sat, 23 May 2015 21:35 |
George Beckman
Messages: 1085
Registered: October 2008
Location: Colfax, CA
Karma: 11
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Senior Member |
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cbryan wrote on Sat, 23 May 2015 18:14Ken,
And, I am afraid to floor it for any length of time, until I get the WOT enrichment set. So, in summary, I wanted a hot rod, but now want a stone axe reliable, economic no-problem engine that doesn't smell. (People following me said it smelled rich). Note I cured it by enrichening one injector. Counter intuitive. The more problems I have, the more I don't want some other brand motorhome. What is this disease?
It is not just WOT that will cause you trouble. We found that 14.7 (basic air fuel mixture for normal driving) would heat the exhaust 150 degrees in 60 seconds at 50% throttle. I don't know how much higher it would go, but I backed off.
I was playing with the idea that it was silly to go into Power Enrichment at 47% throttle. Lesson: Not Silly. GM knew what they were doing.
The injector thing is odd. If one is lagging, it causes it to go lean, so that means the computer sends rich to all injectors. So, one is richer and the other/s are richer yet. The O2 sensor doesn't know where the exhaust is coming from, just that there is too much oxygen, so it injects more fuel.
By the way, a miss makes it "seem" lean to the O2. The exhaust is actually very rich in fuel content, but no O2 was used on the miss, so the computer will add fuel so the exhaust has even more unburned fuel and the firing cylinders are richer than they need to be.
'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
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| Re: [GMCnet] Speedometer Size [message #278285 is a reply to message #278266] |
Sun, 24 May 2015 10:20 |
Ronald Pottol
Messages: 505
Registered: September 2012
Location: Redwood City, California
Karma: -2
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Senior Member |
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I've heard that smart enough engine management systems can tell each
cylinder apart at the O2 sensor, and thus can tune each cylinder
separately. For these motors, I'd think you would need one sensor per
cylinder bank.
On Sat, May 23, 2015 at 7:35 PM, George Beckman wrote:
> cbryan wrote on Sat, 23 May 2015 18:14
>> Ken,
>>
>> And, I am afraid to floor it for any length of time, until I get the WOT
> enrichment set. So, in summary, I wanted a hot rod, but now want a stone
>> axe reliable, economic no-problem engine that doesn't smell. (People
> following me said it smelled rich). Note I cured it by enrichening one
>> injector. Counter intuitive. The more problems I have, the more I don't
> want some other brand motorhome. What is this disease?
>
>
> It is not just WOT that will cause you trouble. We found that 14.7 (basic
> air fuel mixture for normal driving) would heat the exhaust 150 degrees in
> 60 seconds at 50% throttle. I don't know how much higher it would go, but
> I backed off.
>
> I was playing with the idea that it was silly to go into Power Enrichment
> at 47% throttle. Lesson: Not Silly. GM knew what they were doing.
>
> The injector thing is odd. If one is lagging, it causes it to go lean, so
> that means the computer sends rich to all injectors. So, one is richer and
> the other/s are richer yet. The O2 sensor doesn't know where the exhaust
> is coming from, just that there is too much oxygen, so it injects more fuel.
>
> By the way, a miss makes it "seem" lean to the O2. The exhaust is actually
> very rich in fuel content, but no O2 was used on the miss, so the computer
> will add fuel so the exhaust has even more unburned fuel and the firing
> cylinders are richer than they need to be.
> --
> '74 Eleganza, SE, Howell + EBL
> Best Wishes,
> George
> _______________________________________________
> GMCnet mailing list
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>
--
Plato seems wrong to me today.
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1973 26' GM outfitted
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