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Learning how to build Lotus Seven replicas...together!
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PostPosted: April 17, 2020, 1:21 pm 
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Joined: October 13, 2011, 9:19 am
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Location: Denver Co
I yeah I found a bit more info on the stock flow

http://www.superstreetonline.com/how-to ... water-pump

I can try stuff right now but it's cold here so I may not get good data. I will try a few things before putting the pump in.

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PostPosted: April 18, 2020, 5:24 pm 
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Location: Denver Co
I got a chance to work on the car. Had to fix a fuel leak from the new fuel rail and a major oil leak because I only put 3 of the 19 oil pan bolts on and oil sprayed everywhere. :BH:

So coolant wise I figured which tube was hot and which was cold after running her for a bit. And now I remember that I was going to flip the tubes since the radiator temp sensor is on the hot side. That's only going to tell me when the thermostat opens not the temp deferential. I also went ahead and put a new engine coolant temp sensor in just incase. I will collect data tomorrow.

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You can build the most awesome thing in the world but at some point, an 80yr old man in a crx is probably going kick your butt on the track... don't ask me how I know.


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PostPosted: April 20, 2020, 8:15 pm 
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Location: Denver Co
Switched the tubes so the radiator temp sensor is reading right. I also changed the engine sensor with a new one for the hell of it.

I tilted her in the air, slow filled her, pumped all the tubes by hand to get as much air out as possible then started her up. I continued to bleed air with the Lisle funnel and slow revved the engine to get more air out.

All test were done without the pressure cap on. Outside temp around 65deg. The engine read around 199 before the thermostat opened which took a while. Then it stayed around 180-185 at the engine and 150ish or less at the radiator. I really got on her after a while and she ended boiling over. I cooled her down a bit, refilled, bleed and I still could not get her to overheat. Good news but also bad. I am going to try it again tomorrow with the pressure cap on to see what happens.


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You can build the most awesome thing in the world but at some point, an 80yr old man in a crx is probably going kick your butt on the track... don't ask me how I know.
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PostPosted: June 4, 2020, 8:15 am 
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So I got her out for a drive Saturday and she did well. I stuck to the city and did about 25miles over 1hr. Top temp at the engine was 191deg and around 183deg at the rad. At stop lights you could see the temp at the radiator plummet from 180ish to 150-160deg. with the fan on. While driving though the temp would go up and not no go down from from the stop temp. I will do some more testing this weekend.

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