017 CHT, spacer, and resistor installed, sooo much better Options

[scrz914]

In my quest to get better idle I purchased the correct year CHT (017 for the '73 2.0) from WORLD member kkid. Thank you. I also purchased a Brad Mayuer spacer and rigged up a 270 ohm resistor. My idle symptoms with the 012 CHT were that it would idle cold at 1600 rpm for about 3 minutes then drop like a rock as the AAR closed, then die. I could keep it going by feathering the pedal but stop signs were always an adventure. Once warm, it would stay around 900.
I just installed my new setup and it idles so much better. Rpm is about 1500 then slowly comes down to about 1100. I haven't driven it yet. Once I get it good and warm I'll get a better idea of where to set the idle. Then back to the mechanic for a CO analysis. It smells richer now.
I know there have been some posts about the 012 CHT as a good replacement for the '73 2.0 and it may be that if I had put the spacer on that, there would be the same improvement. I didn't want to experiment as this thing was a b**ch to install. I used the "grind the corner of an extension" method along with a deep socket 13mm and it really didn't fit in there well with the MPS and all. It was not really kind to the CHT wire. Probably would have worked if I didn't have the spacer. Anyways, I'll report if there's other idle changes. Right now I'm stoked and going for a ride. (IMG:style_emoticons/default/aktion035.gif)

[Tom_T]

Well dang!!!! - maybe our hunt for the mysterious & elusive NOS 017 CHTs will go on! (IMG:style_emoticons/default/dry.gif)

Thanx for keeping us all posted on how this works out, as well as for your Ohm Meter readings on the other post comparing the 012 & 017 Mr. Santa Cruz 914! (IMG:style_emoticons/default/biggrin.gif)

Maybe you could cut-n-paste those readings you did last night at the other 017 CHT topic, over here so folks can find the info. in the future. Maybe also list your parts noted above (CHT, spacer, resistor & ??) here, along with links to your sources for each if they're readily available for future reference.

If this is the fix, then we'll need to implore Jeff Bowlsby to make new repro ones with the proper resistance, or maybe he can advise on how to alter Bosch 012's into 017's?? (IMG:style_emoticons/default/confused24.gif)