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We all know how the ford 6.0l diesel was with 4 head bolts per cylinder. Does anyone see that being a factor in these 5.0l ? If no what is the difference?
 

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Your talikf about 2 different manufacturers. The ferd was a euro design that went wrong. Way to complicated,over engineered. You can get really tech with a small 4 cylinder but the say philosophy does not apply to bigger diesel engines. Furd had a good idea but those 6.0l are a nightmare problem after problem. Cummins has made v8 diesel engines for marine life for yrs and has been good. This 5.0 has also lived in busses and RVs. The turbo system is new to the titan. The holust turbo system will be nightmarish to work on or get more power out of. 2 turbos 1 intake lol. But you can get the gist.
 

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Discussion Starter #3
No I understand it's 2 different companies. Just didn't know if they were the same size bolts or bigger for better clamping force.
 

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We all know how the ford 6.0l diesel was with 4 head bolts per cylinder. Does anyone see that being a factor in these 5.0l ? If no what is the difference?
Don't see these being a factor at all even at moderate power levels. Just because you have 4-bolts per head, doesn't automatically qualify it as a weak link. You have to factor in not only casting materials (head and block) but types or grades of metals as well. We all know this engine has a compacted graphite iron block which is incredibly strong compared to that of a traditional cast iron block because of increased density and rigidity at a molecular level. Couple that with high tensile strength head bolts and high grade aluminum head castings, you have as robust package. Now add the fact that this engine was designed for commercial applications i.e. buses and chassis vehicles including RV's...you know that this was designed with severe duty fleet use in mind...hence the ISV, which is the single variable vane turbo model of this platform. Cummins had this engine underway back in 2006, it's had some pretty extensive run time before it's made it in to the titan xd. The only unknowns are associated with the air charge system, but knowing holset, they are pretty good about turning out decent products. So rest easy:)

Don't get me wrong, everything has a limit, if your gonna start flirting with 600hp, then head studs are the least of your worries...lol. But a nice performance tune isn't gonna even make this motor sweat adding 50hp and 100tq. If your just keeping it stock, the thought shouldn't even enter your mind.

BigRed
 
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