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Learning how to build Lotus Seven replicas...together!
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PostPosted: January 22, 2020, 2:35 pm 
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Location: Boise, Idaho
Lonnie,
Yes, this gage is independent of the ECU and comes with it's own wideband O2 sensor. NOTE: I've been using the analog gage because the digital LED versions are unreadable in an open car on a sunny day. I'm using it in this closed car because the GoPro can register the dynamic needle readings better than numerical.
The ECU that I'm using was built in '92 and only reads a narrow band O2 sensor. The newer TEC editions can read/control with a wideband sensor signal. The aftermarket gages all have a digital output wire (both narrowband and wideband) that can be used by most ECUs for control as BW indicated.
Ron


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PostPosted: January 23, 2020, 1:34 am 
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You build fast! That dash is really cool, good job. Have you ever worked on a classic beetle? That wiring looks a lot like the custom wiring made for them.


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PostPosted: January 23, 2020, 9:05 am 
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Hey Marcus, no I haven't done any bug wiring. Any similarity to the systems you've seen is purely coincidental.
Ron


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PostPosted: January 25, 2020, 2:48 pm 
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Now to make the ducting for everything that needs air coming through the slot in the bumper/air dam fiberglass panel.


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PostPosted: January 27, 2020, 9:02 pm 
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Got a little side tracked today and messed around with body panels.


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PostPosted: February 1, 2020, 3:53 pm 
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The ducting is about 95% complete.


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PostPosted: February 2, 2020, 8:31 am 
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Location: 4AGE in S.E. Michigan
How are you getting air flow to the oil cooler? Wheel wells are typically high pressure areas.
Davew


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PostPosted: February 2, 2020, 11:50 am 
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Hi Dave,
The inlet comes from the same high pressure area as all of the other cooling ducts; the slot in the air dam.
This source is used commonly on lots of GT cars that I've seen in the paddock. Here's one GTO car as an example.
Also note the apparent low pressure area of the front wheel well and immediately thereafter in the model simulations.

Ron


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PostPosted: February 2, 2020, 1:52 pm 
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I agree the front is going to be at a higher pressure, it just seems that the cooler would be more effective, if it was set at an angle to the towards rad Vs the air having to make a sharp right angle turn into the oil cooler. I'm guessing not enough room to package? Davew


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PostPosted: February 2, 2020, 3:09 pm 
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Dave,
You are correct. Because of the rocks that get thrown around the wheel wells by the tires at our autoX site, the cooler is oriented to reduce exposure and will also have a short exit duct to protect it. There will also be a puller fan on the cooler that will be used to continue the cooling period post-run when the engine is running to remove heat from the turbo. Oil temps will be monitored and cooler orientation with additional rock mitigation will be considered if necessary along with a larger or an additional cooler. This cooler has been keeping the oil temp below 180F in past AutoX seasons. Track sessions remain to be determined. The engine is making more power since it was last put on the track.
Thank you for the heads-up.
Ron


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PostPosted: February 5, 2020, 12:56 am 
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The exhaust system fab has been completed.


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PostPosted: February 14, 2020, 9:30 pm 
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The fuel system is almost complete. The fuel cell vent line will be added when it can be attached to the tail light panel.


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PostPosted: February 15, 2020, 8:16 pm 
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Finished fab on the transmission tunnel and started adding heat shielding.


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PostPosted: February 15, 2020, 9:26 pm 
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Location: Waterloo, WI
Wow! That center console/tunnel looks spectacular! :shock:

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-Keith


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PostPosted: February 21, 2020, 6:05 pm 
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Keith, Thank you.

IT'S ALIVE. :cheers:

After checking the fuel system for leaks, I started it initially to check for oil/coolant leaks. (there weren't any) Then made an adjustment on the dry sump pulley. Went to install the GoPro mount and discovered (duh) the hoop is so close to the top that it won't fit. A problem for another day, just hold the camera. I apologize for the shakiness at one point and for not cleaning the camera lense. So even though there wasn't much heat in it, it fired right up.

Wahoo.

https://youtu.be/rdtUpSBmyig


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