Re: It's a turd, what to look for?
[Re: BSB67]
#3088001
10/21/22 08:54 AM
10/21/22 08:54 AM
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Joined: Jun 2008
Posts: 3,916 usa
lewtot184
master
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master
Joined: Jun 2008
Posts: 3,916
usa
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my thoughts; 250@.050" with cast manifolds is a lot, even if the LSA is spread out. that's even a lot of cam for the compression ratio.,. This. Plus the questions asked in the second post: cranking cylinder pressure, actual cam 0.050" durations, LSA and ICL. Is it a solid or hydraulic? Although there has been a lot of good comments as to what could be the problem, I'm guessing it's the cam and lack of cylinder pressure. that cam with a 110lsa and hydraulic tappet would just up the misery index. if so the intake valve may be closing close to 80 degrees ABDC, pretty late. cylinder pressure may be in the toilet. know my 9.3:1 cast manifold engine would just roll over and die with any cam close to that. but, in fairness there could be some fuel delivery issues too. i know that a 5-6lb fuel pump won't do 5-6lbs at WOT; probably closer to 2lbs. of course a complete run down on before and after of the engine combo would go a long way to finding solutions.
Last edited by lewtot184; 10/21/22 08:58 AM.
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It's a turd, what to look for?
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Re: It's a turd, what to look for?
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