VQ37HR block limitations?

kannibul · 09-04-2009, 08:06 AM

Maybe this is a dumb question, but I've seen several posts noting that an open deck is something desirable (and I assume this is in relation to the interface between the cylinder heads and the cylinders/block) - why?

Hi-TecDesigns · 09-04-2009, 10:15 AM

Quote:

Originally Posted by kannibul

Maybe this is a dumb question, but I've seen several posts noting that an open deck is something desirable (and I assume this is in relation to the interface between the cylinder heads and the cylinders/block) - why?

Depends upon what you're shooting for. An open deck allows for a more free flow of coolant around the cylinders, but a closed deck is stiffer and can handle more abuse from pistons that have more off-axis loads. Open decks are often easier to cast, but they're also often not as accurate tolerance-wise.

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09-04-2009, 08:06 AM	#1 (permalink)
kannibul A True Z Fanatic Join Date: Jun 2009 Location: Jenks, OK Posts: 2,281 Drives: 370z Touring/Sport Rep Power: 267	Maybe this is a dumb question, but I've seen several posts noting that an open deck is something desirable (and I assume this is in relation to the interface between the cylinder heads and the cylinders/block) - why?