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Learning how to build Lotus Seven replicas...together!
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PostPosted: October 8, 2018, 11:14 pm 
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Very beautiful collector. :shock: And how long is the channel turned out? (from the flange to the point of convergence of the channels)

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PostPosted: October 10, 2018, 7:56 am 
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marafonets wrote:
Very beautiful collector. :shock: And how long is the channel turned out? (from the flange to the point of convergence of the channels)


about 130mm from the convergence to the outlet and the merge bullet tip is about 60mm from the outlet. The merge collector is from Cone Engineering http://www.coneeng.com/collectors.html


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PostPosted: October 10, 2018, 10:08 am 
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I apologize for incorrectly formulated the question. I meant the length of the cylinder head flange to the place where all 4 pipes converge into one.

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PostPosted: October 10, 2018, 10:29 am 
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marafonets wrote:
I apologize for incorrectly formulated the question. I meant the length of the cylinder head flange to the place where all 4 pipes converge into one.


primary pipes are 24" long and 1.75" in diameter.


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PostPosted: October 10, 2018, 10:34 am 
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wow, Did you use formulas to calculate the length?

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PostPosted: October 10, 2018, 11:03 am 
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There are a couple online calculators that I found that are based purely on displacement, primary size and max rpm. I don't have the cam profile so it's more of a back of the envelope guess comparing it to what is on the market for mk3 Focus headers. 1.625" primaries may have been a better choice to not push the power band too high but we'll see where these end up and see if any drastic changes need to be made.

here is a good link: http://garage.grumpysperformance.com/index.php?threads/calculating-header-design.185/


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PostPosted: October 19, 2018, 9:38 pm 
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Driveshaft! Thanks to the nice folks at Moxley's in Street, MD for putting this together for me.

Slip Joint: PTI 2603-22
7260 U Joint
Weld yoke: PTI 2651-60
Weld yoke: Neapco N2-28-277
1310 U Joint
Flange Yoke: PTI 3102-192

Attachment:
driveshaft.jpg
driveshaft.jpg [ 981.15 KiB | Viewed 137 times ]


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