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Jonny042 Jonny042 is offline
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Join Date: Aug 2010
Location: Thunder Bay, ON
Posts: 5,500
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Quote:
Originally Posted by Shaun @ Tru6 View Post
Jon, do think you can play with space cams? I talked with Mark Jung and they can be custom designed, 3D printed, tested and then machined to the final profile.
Hi Shaun,

I think I am going to have to. The 2.7RS space cam was a good starting point but the part throttle lean condition is no surprise, given the increased size of the throttles. There's a non-linear relationship between throttle diameter and airflow and throttle opening angle. Basically the engine is getting way more air at a given throttle opening than the space cam is allowing for.

I have a few tricks up my sleeve still do plan to email Mark to see what he thinks. I also have a spare "T" cam that might be a good starting point, just have to whittle away at the lean spots. Sounds easy huh? LOL.
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Old 05-26-2020, 07:01 AM
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