Search found 67 matches

by acarlson
Tue Jan 17, 2017 4:28 pm
Forum: Ask your Mechanical Questions here
Topic: Please ID this part, #1
Replies: 4
Views: 315

Re: Please ID this part, #1

So, I sent a picture of the choke to Clarks support and asked them to verify whether this part was their electronic choke. They replied that it "looks" like theirs. I then sent them an update saying that the part I have is missing the sensor that is pictured in their catalog. I have one +1...
by acarlson
Tue Jan 17, 2017 8:18 am
Forum: Ask your Mechanical Questions here
Topic: Body Tag info Questions...
Replies: 1
Views: 79

Body Tag info Questions...

Here is the body tag for my Corsa: Body Plate-s.jpg Here is what I've decoded it as: Bode Plate Decoded.jpg Questions: 1. Is this an accurate decoding ? 2. What is the difference between "Interior paint code" and "Interior Color" ? 3. Is "Interior paint code: D" Red ? 4...
by acarlson
Sun Jan 15, 2017 3:55 pm
Forum: Ask your Mechanical Questions here
Topic: Please ID this part, #1
Replies: 4
Views: 315

Re: Please ID this part, #1

64powerglide wrote:Clark's # C-9767, electric choke. Page 49.
http://www.corvair.com/user-cgi/catalog ... IN&page=49

Ahh, even better !!

Thanks !

Alec
by acarlson
Sun Jan 15, 2017 8:44 am
Forum: Ask your Mechanical Questions here
Topic: Please ID this part, #2
Replies: 3
Views: 258

Re: Please ID this part, #2

That braided wire is the ignition resistor wire. The thermistor wire does NOT enter the engine bay. If you look at the wiring diagrams the thermistor wire is a single plug pigtail off the rear end of the main body harness before it enters the engine bay. The wire from the thermistor is supposed to ...
by acarlson
Sun Jan 15, 2017 8:23 am
Forum: Ask your Mechanical Questions here
Topic: Please ID this part, #2
Replies: 3
Views: 258

Please ID this part, #2

My cylinder head temp gauge does not work. According to the '65 wiring diagram there is a separate single wire connector which attaches to the wire from the thermister. The thermister wire is supposed to be white. Now I do have a single wire connector coming through the bulkhead but it is not plugge...
by acarlson
Sun Jan 15, 2017 8:10 am
Forum: Ask your Mechanical Questions here
Topic: Please ID this part, #1
Replies: 4
Views: 315

Please ID this part, #1

I have looked at a number of turbo engines and there is a part on the Carter carb that I've never seen on other engines. IMG_0119s.jpg There is an electrical connection on the side of the carb - doesn't exist on other carbs I've looked at. The wires just go to ground and +12. I don't believe it is s...
by acarlson
Tue Jan 10, 2017 1:23 pm
Forum: Ask your Mechanical Questions here
Topic: XR700 + Clarks Pressure Retard...
Replies: 0
Views: 146

XR700 + Clarks Pressure Retard...

Well, I finally got a chance to take my Corsa out for it's first test run with the XR700 and new Pressure Retard installed. Wow - what a difference. Before I could not get over 2K without the engine missing and running rough. Now it runs right up the RPM range without a hickup. Notes on this install...
by acarlson
Tue Jan 10, 2017 5:56 am
Forum: Ask your Mechanical Questions here
Topic: Ignition timing range ?
Replies: 18
Views: 436

Re: Ignition timing range ?

Scott V wrote:...misc...


Point taken ! :tu:
by acarlson
Mon Jan 09, 2017 8:26 pm
Forum: Ask your Mechanical Questions here
Topic: Ignition timing range ?
Replies: 18
Views: 436

Re: Ignition timing range ?

no. the stock setting is 24 is because thats what the engine needs for the correct timing at full throttle & w/boost. vacuum advance has no affect on timing at full throttle & during boost. Actually the engine gets more then 24 at full throttle w/boost. 24 is what the engine gets until the ...
by acarlson
Mon Jan 09, 2017 3:44 pm
Forum: Ask your Mechanical Questions here
Topic: Ignition timing range ?
Replies: 18
Views: 436

Re: Ignition timing range ?

The stock setting of 24 is because there is no vacuum advance on the stock turbo. With Clarks retard unit, it supports both vacuum advance and pressure retard. So although the baseline is lower then stock, the vacuum advance moves it back up to 25-26 at idle and maybe a little higher at higher rpms....
by acarlson
Mon Jan 09, 2017 1:42 pm
Forum: Ask your Mechanical Questions here
Topic: Ignition timing range ?
Replies: 18
Views: 436

Re: Ignition timing range ?

OK, so I modified the mounting bracket so that the timing arm is centered in the notch on the points plate. I was now able to set the timing - Clarks recommends 18 degrees, I'm probably closer to 19 @ 825 rpm. When I hook the vacuum/pressure hose up, the rpm increases to about 1000 and the advance r...
by acarlson
Mon Jan 09, 2017 11:23 am
Forum: Ask your Mechanical Questions here
Topic: Ignition timing range ?
Replies: 18
Views: 436

Re: Ignition timing range ?

Here is a pic of the Clarks pressure retard mounted in the stock location on my dizzy. IMG_0118.JPG This gets back to my original question. I will have to move the pressure retard unit I just don't know how much travel space to allocate for both the vacuum advance and pressure retard operation. Hmm,...
by acarlson
Mon Jan 09, 2017 4:47 am
Forum: Ask your Mechanical Questions here
Topic: Ignition timing range ?
Replies: 18
Views: 436

Re: Ignition timing range ?

i get what you mean..........but they dont work against one another - they work with one another to get you the factory timing w/boost & no boost. Must be true but seems counter-intuitive... you shouldnt have to mod anything to install a pressure retard or a vacuum advance on you dizzy. the arm...
by acarlson
Sun Jan 08, 2017 6:09 am
Forum: Ask your Mechanical Questions here
Topic: Ignition timing range ?
Replies: 18
Views: 436

Re: Ignition timing range ?

It seems to me that if the pressure retard is working properly, at some point the centrifugal advance and the pressure retard will be working against one another. The reason I'm asking is that I took the old pressure retard off and replaced it with the Clark's retard unit. This was part of a dizzy u...
by acarlson
Sat Jan 07, 2017 11:42 am
Forum: Ask your Mechanical Questions here
Topic: Ignition timing range ?
Replies: 18
Views: 436

Re: Ignition timing range ?

Brad, Thanks - I have those. But they only specify the advance at idle. There is no advance on the turbo - no centrifugal or vacuum. It only has a pressure retard. Would you interpret the "vacuum advance" number in the chart for the turbo as the "max retard" value so the timing r...
by acarlson
Sat Jan 07, 2017 6:08 am
Forum: Ask your Mechanical Questions here
Topic: Ignition timing range ?
Replies: 18
Views: 436

Ignition timing range ?

What is the timing range for an LM Turbo. I know the advance limit is 24 degrees. Once the turbo kicks in, what is the retard range as the boost increases ?

Alec

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