Torque plate when machining open-deck blocks?

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Recomended for sure for open deck and some good shops use a torque plate for closed decks too. . Where did you get the recomendation that it is not needed?
 

vinu_neuro

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Did you mean it the other way..required for closed-deck, recommended for open-deck.
 Originally Posted By: Eddie
Recomended for sure for open deck and some good shops use a torque plate for closed decks too. . Where did you get the recomendation that it is not needed?
 
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It should always be better with the plate for stability and preload. But much depends on the speed and heat of the machining.
 
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snowblind in TX
Depends on the block. Open decks with non siamesed cylinders need a torque plate to stabilize the cylinders during boring/honing. With siamesed cylinders+open deck you can get away without a plate, I wouldn't, but you can. Regular closed deck blocks always need a torque plate. IMHO any aluminum block needs to be finished with torque plates as well as every loaded fastener that goes into the block present and torqued to spec.
 
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i have seen shops that specialize in ford mod motors not only use torque plates, but bolt up a drone oil pump (driven off the crank) to simulate the torque stress of that as well. the shop did that with one i had machined along with using ARP head and main studs and new side bolts for the mains.
 
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