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drakonis
Samba Member
Joined: June 15, 2012
Posts: 251
Location: Granite Falls, WA
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 Posted: Mon Mar 02, 2015 3:07 pm Post subject: |
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as far as timing its correctly timed and its a pertronics distributor. no points.
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71 Bay. "ketchikan" |
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PITApan
Samba Member
Joined: November 09, 2014
Posts: 1058
Location: Northern Colorado
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| Posted: Mon Mar 02, 2015 6:43 pm Post subject: |
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| drakonis wrote: |
| well as far as cooling goes. im going to buy the correct tins and veins and all the internals so it cools correctly. right now the flaps are wired open as i dont have a thermostat. it came that way. i dont drive it much so right now its not too big a deal. im going to fix it right. as for the carbs i cant spend too much. i like the k-dogs but i may go with 40mm webber/hpmx type. right now its a 1600 but soon it will transform into a 1915 or a 2054. most likely a 2054. for right now im going to concentrate on the correct tins for cooling and the t stat. The carb situation im not sure a set of 40mm hpmx carbs would work well. im thinking it alot of carb for just a 1600. after i build a new bigger engine then i could see it working well. more thoughts please. and dont beat me up about a gauge being cheap. The dakota digital was not cheap. lol. |
Building the engine up will cost you durability for not a lot more horsepower.
The Weber IDF takes interchangeable venturi. This matches the carb to a range of engines. You will want to have them set up for your engine and roughly jetted. See aircooled.net.
Any dual setup will be more complex than a single setup. You will want to be confident of your skills and prepared to learn heaps new stuff. |
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richparker
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Joined: November 24, 2011
Posts: 6983
Location: Durango, CO
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airschooled
Air-Schooled
Joined: April 04, 2012
Posts: 12728
Location: on a bike ride somewhere
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| Posted: Mon Mar 02, 2015 10:40 pm Post subject: |
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| Wildthings wrote: |
| If you have even a minor combustion gas leak past the ring terminal your gauge will read very high even when your CHT's are normal. |
x2. I danced around this problem for months before I found out that several different depths of spark plug wells exist, and the DD sender will not work without cutting a notch in the deeper ones. Notice how the maroon (crimp) gets pinched on the lip of the head and pulls the orange (sender) out of alignment causing a leak. Then you have 900* exhaust gasses leaking out the spark plug directly onto the sender.
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udidwht
Samba Member
Joined: March 06, 2005
Posts: 3779
Location: Seattle, WA./ HB, Ca./ Shizuoka, Japan
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| Posted: Tue Mar 03, 2015 1:30 am Post subject: |
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When/if you get a chance pull the sender and post a pic of it.
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1972 Westy Hardtop/Type-4 2056cc
96mm Biral AA P/C's~7.8:1CR
Headflow Masters New AMC 42x36mm heads w/Porsche swivel adjusters
71mm Stroke
73 Web Cam w/Web solids
Dual 40mm IDF Webers - LM-2 - 47.5 idles/125 mains/190 air corr./F11 tubes/28mm Vents - Float height 10.45mm/Drop 32mm
Bosch SVDA w/Pertronix module (7.5 initial 28 total @ 3400rpm)
Bosch W8CC plugs
Pertronix Flamethrower 40K coil
S&S 4-1 w/Walker QP 17862
3 rib 002 Trans
185R14 Hankook tires |
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madmike
Samba Member
Joined: July 11, 2005
Posts: 5292
Location: Atlanta,Michigan
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| Posted: Tue Mar 03, 2015 7:01 am Post subject: |
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40 IDF's are the PERFECT carbs for a 1600cc,, that's all I run 
find some good used,, I prefer them to hpmx's 
cheaper($$$) then new kduds 
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76 Drag/Street bug 2180cc 'Turbo' 11:85 @113 mph"If I go any faster I'll burn up the Hamster" ,gets 28 mpg. also 10/09/22 11.90 @115 mph
"If I'm ever on Life Support,UNPLUG Me, Then Plug me back In see if that Works" |
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[email protected]
Samba Member
Joined: August 03, 2002
Posts: 12785
Location: Salt Lake City, Utah
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| Posted: Tue Mar 03, 2015 9:50 am Post subject: |
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http://vwparts.aircooled.net/CB-Performance-Dual-I...rb-kit.htm
Do you know what you are talking about? This is the same kit, but we offer a setup/jet service also. Maybe you didn't realize we sell 4 brands of carb kit, all with the same genuine Spanish Weber carbs?
I also recommend the CB linkage/filters/intakes, better than the others IMO.
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Jody '71
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Joined: July 16, 2005
Posts: 2842
Location: Manassas VA
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| Posted: Tue Mar 03, 2015 11:04 am Post subject: |
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| drakonis wrote: |
| sender ring is against head. then plug washer and plug. in that order. all brand new btw. just installed last week. |
If I recall correctly the plug washer should be removed. The ring terminal is the plug washer in affect. Having the plug washer in conjunction with the ring terminal may be the reason you're seeing higher CHT temps.
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Last edited by Jody '71 on Tue Mar 03, 2015 11:09 am; edited 1 time in total |
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Heathintexas
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Joined: September 24, 2011
Posts: 135
Location: Berlin Germany
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| Posted: Tue Mar 03, 2015 11:04 am Post subject: |
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I'm confused about the diagram above. Even though the main idea is to point out that one make of head has a deeper recess, I do see that it shows to use a crush washer along with the sender ring. I thought you were supposed to replace the spark plug washer with the ring so that you don't tamper with how much the plug protrudes into the combustion chamber.
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Randy in Maine
Samba Member
Joined: August 03, 2003
Posts: 34890
Location: The Beach
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| Posted: Tue Mar 03, 2015 11:21 am Post subject: |
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I don't remove the plug washer myself.
Put it back on there and see if that changes the CHTs you are seeing. It only needs a whisper of a leak to make it read really high. |
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airschooled
Air-Schooled
Joined: April 04, 2012
Posts: 12728
Location: on a bike ride somewhere
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| Posted: Tue Mar 03, 2015 12:07 pm Post subject: |
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You can rig the plug washer/sender ring any number of ways. When I made the drawing last year that was how I was running my bus and it was working fine. I've also had success running it with the sender and washer reversed. I have not had much luck running without the crush washer though; the DD sender is just a drilled out ring terminal, so the drilling a can vary and once it's used as a crush washer it changes the metallurgic properties of the cheap metal so re-crushing it will usually end up in a leak.
Robbie
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Tcash
Samba Member
Joined: July 20, 2011
Posts: 12844
Location: San Jose, California, USA
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| Posted: Tue Mar 03, 2015 1:14 pm Post subject: |
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Please use this post for further CHT discussions.
CHT Nirvana
Thank you
Tcash |
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