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Re: Question about B and RB engines
[Re: GTX MATT]
#939050
02/28/11 04:19 PM
02/28/11 04:19 PM
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Joined: Jan 2003
Posts: 8,943
Holly/MI
Dean_Kuzluzski
master
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master
Joined: Jan 2003
Posts: 8,943
Holly/MI
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At the Mopar Nat's, years ago, Hughes had a sectioned B/RB block cut apart to show the thickness of the block sidewalls and it was very dissappointing. It's like there wasn't really anything to secure those aftermarket girdles that are supposed to reinforce the 2-bolt mains. The Max Wedges proved that to the engineers once they started running 11.5:1+ compression. AND that's why the 2nd Gen Hemi got the crossbolted 4-bolt mains.
Moderate compression (10.5:1 or less) I believe the B/RB's will last longer then you want it to.
The deep skirt is otherwise a facade or at least an attempt to reduce NVH (noise, vibration, harmonics).
R.I.P.- Gary "Coop" Davis 02/09/68-05/13/04
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Re: Question about B and RB engines
[Re: Dean_Kuzluzski]
#939053
02/28/11 05:54 PM
02/28/11 05:54 PM
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Joined: Nov 2004
Posts: 2,825
Sk. Canada
RemCharger
master
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master
Joined: Nov 2004
Posts: 2,825
Sk. Canada
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Quote:
Quote:
Tons of guys running 2 bolt mains (studs) at 800+ hp. Most start cracking in the web up in the block.
Precisely my point. "Capwalk" is usually the culprit.
How much do these guys have into the longblock and how long do they expect them to last?
Many upgrade to an aftermarket block after an early/expensive demise. The awesome selection of aftermarket cylinder heads have people building high HP motors that beyond what the block can handle.
Whoops.. that got taken the wrong way. IF there is a failure, it would be the main web. Cap walk is a result of the bolts not having enough tensile strength to hold the cap down, which is remedied by the studs.
What often happens is that an engine is not built properly, and then a band wagon forms that say it can't be done. And the rest just quietly keep running their well built engines.
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