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Kirkham Motorsports

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  #581 (permalink)  
Old 06-24-2021, 03:05 AM
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Originally Posted by xb-60 View Post
Jim, a nice looking set of pipes.
Just wondering, what internal diameter are they?
Will they be coated? This is not my area of expertise ....do you know if ceramic coating does actually make a difference to the power output in race applications?

Cheers!
Glen
2.5" I.D. They are not coated, they are "mill finish" i.e. as the stainless comes from the supplier. I do not know if coating helps power, it does reduce heat radiance but stainless has less heat transfer than mild steel anyways.

Hoping to wrap up work here at Time Machines today so we can transport the car back to Jim's home shop for the minor details completion and eliminate his 3 hour round trip commute to our shop.
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  #582 (permalink)  
Old 06-24-2021, 03:12 AM
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Originally Posted by Mark IV View Post
2.5" I.D. They are not coated, they are "mill finish" i.e. as the stainless comes from the supplier. I do not know if coating helps power, it does reduce heat radiance but stainless has less heat transfer than mild steel anyways.

Hoping to wrap up work here at Time Machines today so we can transport the car back to Jim's home shop for the minor details completion and eliminate his 3 hour round trip commute to our shop.
Glen,

What Rick said. I am in a hurry to get out the door to do that long drive to his shop so that I can get to work on the car and get it back home. Rick volunteered his shop for the car as he and others would be there to help while I was rehabbing my rotator cuff.

The headers and exhaust pipes are a high quality stainless steel and will not transfer heat as readily as mild steel. I can always have them coated later if I feel the need. Take care.

Jim
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  #583 (permalink)  
Old 06-25-2021, 03:25 AM
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Thanks Rick and Jim. Yes, the thermal conductivity of steel (the "k" value) is around 3 times that of stainless.

Cheers,
Glen
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  #584 (permalink)  
Old 06-30-2021, 09:19 AM
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The Time Machines FIA Vintage car is off the lift, into our trailer (Jim's new trailer has not arrived yet...like EVERYTHING on order today!) and back at Jim's shop for the final details. Unfortunately, it will not make the Glen HSR race next weekend as the dyno tune cannot be done in time. But we expect this to be a real bear with the new engine and some other tweaks!
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Old 07-20-2021, 04:12 PM
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Default Pittsburgh Vintage Grand Prix

Started sorting out the new build and some suspension changes at the Pittsburgh Vintage Grand Prix. The weather was mixed, with a lot of rain and some races cancelled due to thunderstorms. Here is a video from one of the time trials. The first half of the video is the most interesting, after about half way through it gets a little boring, as it is just me for several minutes and then the trip back to the paddock. Also, I need to move the camera as the rear view mirror is in the way.

https://youtu.be/6JhbSBPgpZ4

Jim
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Old 07-21-2021, 05:50 AM
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Good to see the video footage Jim.
You'll have to fix that low fuel pressure though!

Cheers,
Glen
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  #587 (permalink)  
Old 07-21-2021, 06:54 AM
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Glen,

Thanks. I was going to hook up the fuel pressure gauge, but there is no room under the hood to fit the fuel isolator, which prevents fuel from being able to enter the cockpit.

Jim
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Old 07-21-2021, 10:33 PM
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Looks like you had a big grin on your face! Nice work! Glad you are up and running.
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Old 07-22-2021, 05:22 AM
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Paul,

I sure did! The fact that I was able to race was amazing. I am 5 months post significant rotator cuff surgery. I had torn one rotator cuff tendon almost completely off the bone (it was hanging by a thread) and had torn the adjacent tendon about half off of the bone as well. They used 3 anchor points and 12 sutures to re-attach the tendons. Most people take 1-1.5 years to partially recover from rotator cuff surgery, to be able to race at this point was a miracle. My right arm did tire somewhat between the racing and carrying two 5 gallon jugs of race fuel from the tanks to my paddock space 200 yards away.

Looking forward to the US Vintage Grand Prix at Watkins Glen this coming September. The shoulder should be stronger by then. Take care.

Jim
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