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Here's my problem. I have a Merlin II Tall Deck Block with 4 Bolt non-splayed caps. I want to build a 547 or 555 with a blower Probably 14:71 (low Boost) lookin for over 1000 Ponies. I have a LA Enterprise Crank, Carrillo Rods.
Now do I spend the money and have the block converted to splayed caps or just run the 4-Bolt straight caps. I have read on some posts that converting 4-bolt main caps to splayed leaves less strength do to bolt hole material gone from original holes? Block is at machine shop in Vegas now. I have not decided yet what to do.
Info greatly appreciated...John
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The Merlin II was dowel pinned caps. The idea of splayed caps is to keep the caps from walking. The dowel pinned caps should also. I got a few Merlins out there but I have never gotten one back to see if the caps walked or not.
Have the machine shop check that the line hone is straight. Every Merlin I ever had it was not.
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My boss has a merlin block with straight bolts and it makes over 2000 horsepower with twin turbos and he has not had a problem at all. The only time you want to convert a block two angled bolts is if it is a 2 bolt to start.
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Thanks for the replies. It does have dowl pins. I think I will just use as is...John
