| [GMCnet] OFF TOPIC - Gauges for VW Beetle Towd [message #172899] |
Mon, 11 June 2012 03:44  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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G'day,
I mentioned that I'm building a '69 VW Beetle to use as a towd and I need to
figger out what instruments I should install.
It's mildly hot; description below:
Bore: 90mm
Stroke: 69mm (standard non counterbalanced crank - limits RPM to around
5500)
Displacement - Patriotic - 1776 ;-)
Engle Cam: W-110
Heads: mildly ported / single valve springs
Intake valves: 40mm
Exhaust valves: 35.5
Carb: Weber progressive 2 barrel - runs on one - two when you kick it
External oil cooler with fan
Distributor: 009 w Compufire ignition module (no points)
Alternator conversion
I'm going to watch Samba (VW website) for a reasonably priced air
conditioning system.
To the question at hand:
I bought panels that replace the ones on either side of the speedo.
On the left there's a big hole for the tachometer and holes for two other
gages; I'm thinking oil press and oil temperature.
On the right there's two holes and I'm thinking cylinder head temp and TBD.
TBD is Amp gauge or Battery volt gauge?
Comments please.
Regards,
Rob M.
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] OFF TOPIC - Gauges for VW Beetle Towd [message #172906 is a reply to message #172899] |
Mon, 11 June 2012 06:52  |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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Ammeter. Lights are a good voltmeter :)
VW put 4800 RPM rotors in the engines at one point. An electronic 5500 is likely close.
Not familiar with the cam, but as long as it will idle happily, it ain't too radical.
Stock heat exchangers? Probably are the restriction, porting is fun.
90mm. Does that fit, or did you have to fly-cut the case spigots? And if so, any metal left iin them? :)
Been near 20 years since I messed about with air cooled volkswagens.
--johnnt
'76 23' transmode norris
'76 palm beach
'91 diesel jetta toad
From: Robert Mueller <robmueller@iinet.net.au>
To: gmclist@temp.gmcnet.org
Sent: Monday, June 11, 2012 4:44 AM
Subject: [GMCnet] OFF TOPIC - Gauges for VW Beetle Towd
G'day,
I mentioned that I'm building a '69 VW Beetle to use as a towd and I need to
figger out what instruments I should install.
It's mildly hot; description below:
Bore: 90mm
Stroke: 69mm (standard non counterbalanced crank - limits RPM to around
5500)
Displacement - Patriotic - 1776 ;-)
Engle Cam: W-110
Heads: mildly ported / single valve springs
Intake valves: 40mm
Exhaust valves: 35.5
Carb: Weber progressive 2 barrel - runs on one - two when you kick it
External oil cooler with fan
Distributor: 009 w Compufire ignition module (no points)
Alternator conversion
I'm going to watch Samba (VW website) for a reasonably priced air
conditioning system.
To the question at hand:
I bought panels that replace the ones on either side of the speedo.
On the left there's a big hole for the tachometer and holes for two other
gages; I'm thinking oil press and oil temperature.
On the right there's two holes and I'm thinking cylinder head temp and TBD.
TBD is Amp gauge or Battery volt gauge?
Comments please.
Regards,
Rob M.
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] OFF TOPIC - Gauges for VW Beetle Towd [message #172909 is a reply to message #172899] |
Mon, 11 June 2012 07:52 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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| Robert Mueller wrote on Mon, 11 June 2012 04:44 |
G'day,
I mentioned that I'm building a '69 VW Beetle to use as a towd and I need to figger out what instruments I should install.
<snip>
To the question at hand:
I bought panels that replace the ones on either side of the speedo.
On the left there's a big hole for the tachometer and holes for two other gages; I'm thinking oil press and oil temperature.
On the right there's two holes and I'm thinking cylinder head temp and TBD.
TBD is Amp gauge or Battery volt gauge?
Comments please.
Regards,
Rob M.
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Rob,
We had thermocouples on all for heads of a very special VW. I wish I could remember which one proved most valuable. If I should remember, I will pass that along.
I would vote for an expanded scale volt in your last hole. Expanded scale means the low end would be 11 (not Zero) and a top of 15.
While I happen to like having an ammeter in the circuit, too many owners have not fully understood what they are saying. This is not restricted to those that admit being electrically challenged. If you are watching gauges and the volt guy is slowly losing ground or nailed at the high end, you know you have a problem.
An ammeter can be indicating problems in an old VW if the needle is less than a needle width to the losing side.
To run an ammeter with the car in standard configuration, the charging lead from the generator, that now stops at the battery under the seat (or the starter depending on build), would have to be run all the way to the fuse panel and the wire going to/from the battery tapped at the panel at full wire gage.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] OFF TOPIC - Gauges for VW Beetle Towd [message #172921 is a reply to message #172906] |
Mon, 11 June 2012 10:15 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Johnny,
Mike has a point, the voltmeter is pretty cause it's got COLORS! ;-)
Checked and 5500 is lowest rpm limiting rotor that JBugs sells; turns out
they won't work with the Compufire ignition so I'll use points.
Cam write-up:
The Engle W110 Classic VW Bug camshaft grind is designed for 1.1 or 1.25
rockers, and it's specs are .392" Cam Lift, .430" Valve Lift (1.1 Rockers),
284 degrees of advertised duration, and 247 degrees of duration at .050", on
a 108 Lobe Center.
This is the most popular and best all-around street cam ever made for a VW
engine. You can not use this with a stock carburetor; you really need at
least 2bbls of carb (Center mount 2bbl, dual 1bbls, or dual 2bbls).
This cam works "OK" with stock heads, but its performance is much better
with some porting, and especially if larger valves are used. Expect a power
band of 1500-5800 RPMs, the more headwork and carburetion the better the low
end will be.
You can get by with HD Single Valve springs and Bolt on Rocker Shafts. Use a
compression ratio of 8-8.5:1.
If you choose to use this cam with 1.25 rockers, you will extend the top end
to 6000, but DUAL SPRINGS ARE REQUIRED.
Stock heat exchangers, my lady wouldn't put up with cold tootsies! Found a
pair of new ones on Samba for $130.
At first I was going to go with 94mm barrels but the amount of meat left in
the case was scary so I went with 90.5's.
Regards,
Rob M.
-----Original Message-----
From: Johnny Bridges
Ammeter. Lights are a good voltmeter :)
VW put 4800 RPM rotors in the engines at one point. An electronic 5500 is
likely close.
Not familiar with the cam, but as long as it will idle happily, it ain't too
radical.
Stock heat exchangers? Probably are the restriction, porting is fun.
90mm. Does that fit, or did you have to fly-cut the case spigots? And if
so, any metal left iin them? :)
Been near 20 years since I messed about with air cooled volkswagens.
--johnnt
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] OFF TOPIC - Gauges for VW Beetle Towd [message #172944 is a reply to message #172939] |
Mon, 11 June 2012 11:59 |
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WD0AFQ
Messages: 7111
Registered: November 2004
Location: Dexter, Mo.
Karma: 207
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Senior Member |
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Ok on the black Rob. Won't worry about saving my extra white gauges and speedometer overlay for you then. The alum gauge holders and glove box cover were in the car when I got it from Gene. I did have to make the tach hole larger but that was it. I think oil temp is an important gauge. Head temp would be nice but don't see needing both. I have the round vdo fuel gauge to match the others. If the amp gauge is not hooked up properly it is worthless. That is why I took it out and replaced it with volt gauge. When this alternator dies I am replacing it with a larger one. I have an oil pressure gauge but it is electric. When the car oil warms up good it reads zero at idle but the light does not come on. Reads 25 going down the road at 2000 and above rpms. Had a vacuum gauge but it is totally worthless when a guy like me owns a vdub. I drive it on the floor, so I know vacuum is zero.Got to get out there and install my progressive Holley.
Just cleaned the GMC water tanks and black. Now to refill both and flush. Apparently I did not get all of the pink stuff out of water heater. Nasty smell I am having trouble getting rid of. Or, it was water from Shawnee. Think I will have it all fulushed out today. We will be spending next week in the coach again.
Dan
3 In Stainless Exhaust Headers
One Ton All Discs/Reaction Arm
355 FD/Quad Bag/Alum Radiator Manny Tran/New eng.
Holley EFI/10 Tire Air Monitoring System
Solarized Coach/Upgraded Windows
Satelite TV/On Demand Hot Water/3Way Refer
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