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FreakCitySF
Samba Member
Joined: June 08, 2004
Posts: 642
Location: San Francisco
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 Posted: Sun Nov 26, 2006 11:52 am Post subject: I thought this temperature strip was a good idea |
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3M stick on thermometerm, fisk tank style
http://cgi.ebay.com/ebaymotors/Temp-Strip-volkswag...0920QQrdZ1
But what temperatures should be considered safe?
How about the dip stick method, what was the threshold? My dipstick is warm but never hot. |
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Towel Rail
Horizontally Opposed
Joined: April 15, 2005
Posts: 4622
Location: SE CR IA US NA PE
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| Posted: Sun Nov 26, 2006 12:09 pm Post subject: |
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Hmm, that's an interesting approach. I wouldn't trust it over a CHT gauge though.
_________________
1974 Thing -- under the knife
1967 Beetle -- spring/summer/fall driver
1996 Subaru OBW (EJ22, 5-speed, AWD) -- winter car, 3-seasons "don't feel like biking today" car
049 > 070 > 053 > 009 |
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emersonbiggins
Samba Member
Joined: February 18, 2003
Posts: 1681
Location: Nebraska
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| Posted: Sun Nov 26, 2006 9:45 pm Post subject: |
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When I have driven my VWs with a berg temperature dip stick, it runs hottest when I push the car past 65 mph. If I slow down it cools down and when I am going to stop I let the car idle for a few minutes before I shut it off.
A 3M stick wouldn't tell me if it got hot while I was driving and that's when the damage happens. |
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bucko
Samba Member
Joined: December 09, 2004
Posts: 2617
Location: Coppell, Texas
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| Posted: Mon Nov 27, 2006 5:01 am Post subject: |
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This topic of how high the temp is acceptable has been discussed in great lenghts on the beetle forums. Since our engines are 1600 CC's like the Beetle, those discussions would apply. Problem is, our engine compartment is not compatable with the Beetles, so our engines do run hotter at higher speeds. This is because the cooler outside air has a difficult path to the fan box. The rear side "slits" did not really provide enough hot engine air to escape. We also need to remember that these vehicles were designed originally for slower military purposes, and not for 65 plus MPH driving. I would say this was one of the many reasons they were not very successful as a "civilian" vehicle here (or overseas).
As to a good temp gauge, the Gene Berg dipstick temp sensor is a good one, but getting a reading of the cylinder head temperature is your best spot. Kits are available for this. The heads get the hottest (reason why VW went to the "wasserboxer" (water box engine) in the late 84 buses (vanagons) to help cool down and get more life out of the bigger vehicles they started producing. |
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honky
Samba Member
Joined: August 10, 2006
Posts: 149
Location: Connecticut, USA
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| Posted: Tue Nov 28, 2006 7:25 am Post subject: dipstick |
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| Interesting that Gene Berg invented the dipstick temp which ties into your oil pressure light because he said he could not find a temperature guage that he felt was accurate. |
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Thingggg
Samba Member
Joined: June 30, 2004
Posts: 353
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| Posted: Tue Nov 28, 2006 9:10 pm Post subject: |
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Doesn't this guy sell deer whistles  |
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bucko
Samba Member
Joined: December 09, 2004
Posts: 2617
Location: Coppell, Texas
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| Posted: Wed Nov 29, 2006 8:29 am Post subject: Re: dipstick |
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| honky wrote: |
| Interesting that Gene Berg invented the dipstick temp which ties into your oil pressure light because he said he could not find a temperature guage that he felt was accurate. |
True. During Gene Berg's time here on earth, there were many things that did not meet his high expectations. I wish I had the VW knowledge that he carried in just his pinky finger! I believe though that the problem was not in the gauges (VDO makes some excellent ones), but rather in the sending unit, and where to place such a unit. Over the years, it was agreed that the cylinder head was the best place to check for air cooled engine temps. Could not tell you if there has been a satisfactory sensor made for this application though. Placing a temperature "strip" (like that suggested by the original poster) may work, but it would be a pain in the butt to check it during a ride, for sure. |
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Thingggg
Samba Member
Joined: June 30, 2004
Posts: 353
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| Posted: Wed Nov 29, 2006 11:34 am Post subject: |
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| satisfactory sensor |
Under the spark plug seems to work--racers monitor all cyl and output it to a generic AtoD sensor collection boxs like those from Inovate Motorsports.. How linear with respect to temp they are with respect to actual head temps would be interesting to know, but if they are calbration is easy.
I have seen people use infered temp guages to tune bikes on a dino under boost. I was thinking about getting a cheep one $70ish. Dose anyone have any experience with them?
http://www.webbikeworld.com/r2/digital-infrared-thermometer/digital-infrared-thermometer.htm |
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FreakCitySF
Samba Member
Joined: June 08, 2004
Posts: 642
Location: San Francisco
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Thingggg
Samba Member
Joined: June 30, 2004
Posts: 353
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