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426 boost pressure |
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AC D21 ![]() Bronze Level ![]() Joined: 01 Feb 2015 Location: NJ Points: 8 |
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How much boost can a stock D21 intake manifold take.
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DrAllis ![]() Orange Level Access ![]() Joined: 12 Sep 2009 Points: 21022 |
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More than 50, but not 100 psi.
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NEVER green ![]() Orange Level Access ![]() Joined: 28 Feb 2013 Location: MN. Points: 7910 |
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A intercooled one would take more?? |
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2-8050 1-7080 6080 D-19 modelE & A 7040 R50
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AC D21 ![]() Bronze Level ![]() Joined: 01 Feb 2015 Location: NJ Points: 8 |
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Thanks
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DrAllis ![]() Orange Level Access ![]() Joined: 12 Sep 2009 Points: 21022 |
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Intercooler will take 100 psi, yes.
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injpumpEd ![]() Orange Level Access ![]() ![]() Joined: 13 Sep 2009 Location: Walnut IL Points: 4972 |
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a customer of mine in MN with a D21 that I built a 450 roosa pump for was running 7th gear one time and it blew the stock intake apart. I sold him an intercooler manifold that was gutted. He was running an S300 turbo and they will exceed 50 psi. The load that 7th gear put on it must have sent it to over 60 psi lol! Luckily he had side shields on it. Since that time, I tend to shy away from the small manifold, and go to the intercooler manifold, even if you have to gut it.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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cms ![]() Bronze Level ![]() Joined: 29 Nov 2010 Location: collinsville il Points: 70 |
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We blow a stock manifold apart at 45 psi with a s-400 3x3. Running ( different turbo set up)up to 70 psi now with intercooler gutted and ice box with no problem.
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