Rod bolts, main caps, and what not.
#31
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Joined: Aug 2011
Posts: 2,733
Likes: 8
From: bel air, md
My experience comes from drag racing and circle jerks. That being said, I've had great success with ARP 2000's.Myself and a group of drag racer's making 1000hp at the wheels on boosted engines with no failures. To me the question should be who installed a ARP 2000 or (insert aftermarket option) and had a failure??? What horsepower and RPM did it happen??? All the engine failures I've seen are normally from something else. I. e dropped valve, lose of oil pressure (yes possibly from rod stretch) and
I agree 100% when you have an aluminum block what are you bolting into? When you have an aluminum rod what are you bolting into? I don't know what everyone else has been around but when you have aluminum blocks with aluminum main caps and aluminum rods upwards of 3000 horsepower. Rod bolts seem kinda trivial to me.
How long before this thread goes completely off topic? lol
I agree 100% when you have an aluminum block what are you bolting into? When you have an aluminum rod what are you bolting into? I don't know what everyone else has been around but when you have aluminum blocks with aluminum main caps and aluminum rods upwards of 3000 horsepower. Rod bolts seem kinda trivial to me.
How long before this thread goes completely off topic? lol
#33
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Joined: Nov 2013
Posts: 834
Likes: 63
From: The pinnacle of awesome
Marine engines are not car engines. Crazy that no one understands this. A strong bottom end is crucial in either hobby. Cams seem to be the major factor between the two. I'm talking 600hp big Chevys. Since when did the blocks change? Never did. You can add Merlin, worlds, brodix, dart, ect to any marine engine. The cam gives the engine it's personality.
#34
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Joined: Feb 2011
Posts: 769
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From: Brookfield Wi
Marine engines are not car engines. Crazy that no one understands this. A strong bottom end is crucial in either hobby. Cams seem to be the major factor between the two. I'm talking 600hp big Chevys. Since when did the blocks change? Never did. You can add Merlin, worlds, brodix, dart, ect to any marine engine. The cam gives the engine it's personality.
*FYI, an outlaw car that is locked in gear, entering and exiting corner, lifting (dragging the lower end) and hammering the throttle, at much higher RPM is very abusive to the lower end. Tolerances are critical since the bearing sees loads on all sides. Marine engines, sees this only when the prop is moving air. BOTH are abusive environments and alot can be learned by both. Let's keep an open mind.
#35
#36
Would it be safe to say that in a sub-6000 rpm marine engine, proper machine work and proper clearances outweigh the bolt selection? In other words, will we commonly see failures in 600 hp, 6000 rpm BBC marine engines with proper setup and using the base ARP offering?
#37
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Joined: Aug 2011
Posts: 2,733
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From: bel air, md
Would it be safe to say that in a sub-6000 rpm marine engine, proper machine work and proper clearances outweigh the bolt selection? In other words, will we commonly see failures in 600 hp, 6000 rpm BBC marine engines with proper setup and using the base ARP offering?
#38







