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| Will a Duke 2.5L engine w up to 18 psi of boost last? (Page 1/1) |
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Dennis LaGrua
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JUN 15, 06:30 PM
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My answer would be NO but this guy claims that he has 250km mileage on his engine using up to 18 psi of boost and is just replacing it. The teardown is shown here.
High Performance Duke
With the lightweight block and crank the claims by this guy are amazing but maybe the Duke can take significant boost as long as its not over revved.What do you think?------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "
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Patrick
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JUN 15, 08:03 PM
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Interesting, I enjoyed that. I also appreciated the fact that the video was about his project, and not all about himself (unlike a lot of other PIA YouTubers).
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edfiero
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JUN 16, 10:08 AM
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seems like it he said it took the boost because of the giant piston ring gap. So perhaps a Duke could run boost if it was built to handle the boost, but I think if you had a fresh rebuild to factory spec, it would not last under boost.
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Dennis LaGrua
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JUN 16, 10:57 AM
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| quote | Originally posted by edfiero:
seems like it he said it took the boost because of the giant piston ring gap. So perhaps a Duke could run boost if it was built to handle the boost, but I think if you had a fresh rebuild to factory spec, it would not last under boost. |
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That You Tube video seemed to go against what is usually said about the Duke engine. I understand your point about a larger ring gap helping to handle the boost but if the guy was able to mention that he actually read 18 psi in the manifold going into the engine, I'm not certain how much effect a larger ring gap would have. I do not know these engine well but I am starting to believe that rotating mass places the largest amount of stress and that the Duke is very prone to breakage above 5000 RPM. There is another You Tube guy doing a dyno test on a modified Duke and so far he hasn't blown it up as well but he does observe the low redline. I can only guess that effect of a higher RPM on an engine increases stress exponentially not linearly. In other words does a 20% higher RPM create a 50% difference in engine stress? ------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "
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