Turbo + Supercharge 350Z's vs. Cobra, Vette and Modded Camaro's...
Oct 16, 2005, 07:41 PM
#17
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I know what it means, but I'm not sure I can explain it well. Oh well, here goes (please forgive me if I've dumbed it down too much):
The "deck" refers to the top of the block where the head gasket and cylinder head meet. There are water jackets around each cylinder bore in the block. An "open deck" refers to the water jackets being open or exposed at the top of the block. With a "closed deck", the water jackets are sealed off at the top of the block. This provides more material in between the top of the bores, strengthening the bores and providing a better seal to the head. With an open deck design lots of boost may make it past the thinner, and less secure, seal provided by the head gasket.
Hopefully that made sense.
The "deck" refers to the top of the block where the head gasket and cylinder head meet. There are water jackets around each cylinder bore in the block. An "open deck" refers to the water jackets being open or exposed at the top of the block. With a "closed deck", the water jackets are sealed off at the top of the block. This provides more material in between the top of the bores, strengthening the bores and providing a better seal to the head. With an open deck design lots of boost may make it past the thinner, and less secure, seal provided by the head gasket.
Hopefully that made sense.
Last edited by Czubaka; Oct 17, 2005 at 04:41 PM.
Oct 16, 2005, 08:08 PM
#18
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Originally Posted by heyzeus11
nice car loj68; exactly what do you have done under the hood(which turbo, pistons, rods, etc.)?
I believe he's running around 630whp now.
Oct 17, 2005, 04:41 PM
#22
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Well, I can't say for certain why the manufacturers would do this (my 99 Subaru Impreza 2.5RS was open-deck), but here are the thoughts that come to mind:
1 - Not needed for NA applications
2 - Lighter block
3 - Easier to manufacture, which equates to:
4 - Cheaper manufacturing cost
5 - Better cooling of the cylinder and head...?
I'm reasonably sure there are other decent reasons, but that's all I can think of at the moment.
1 - Not needed for NA applications
2 - Lighter block
3 - Easier to manufacture, which equates to:
4 - Cheaper manufacturing cost
5 - Better cooling of the cylinder and head...?
I'm reasonably sure there are other decent reasons, but that's all I can think of at the moment.
Oct 17, 2005, 04:54 PM
#23
Originally Posted by EVOTEXAS
There's a couple things you guys need to remember.
The 350Z is a 6 cylinder with high compression and an open deck aluminum block. It does NOT respond well to FI without major modification. It isn't supposed to and is not designed that way. Don't hate the Z, hate the owners who are too stupid to realize this and then represent poorly.
Firebirds, Mustangs, and Camaros are V8s with a lot more power potential than a 6 or even the precious 4G63. You tend to forget this with a turbocharged, closed deck, iron block high revving engine designed for 20 psi. It's unrealitstic and not even common. Name one other car out there like the Evo. There isn't one and that is why it's so appealing.
Watch this video and welcome yourselves back to REALITY. Duh.
The 350Z is a 6 cylinder with high compression and an open deck aluminum block. It does NOT respond well to FI without major modification. It isn't supposed to and is not designed that way. Don't hate the Z, hate the owners who are too stupid to realize this and then represent poorly.
Firebirds, Mustangs, and Camaros are V8s with a lot more power potential than a 6 or even the precious 4G63. You tend to forget this with a turbocharged, closed deck, iron block high revving engine designed for 20 psi. It's unrealitstic and not even common. Name one other car out there like the Evo. There isn't one and that is why it's so appealing.
Watch this video and welcome yourselves back to REALITY. Duh.
Oct 17, 2005, 06:08 PM
#27
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thats sad.. for a twin turbo set up that costs that much. Iv raced a few z06's with stock turbo and race gas and eaten em. Recently (with teh turbo upgrade)i raced a z06 that had a cam, intake, full exhaust and a small shot of nitrous on the freeway and it was dead even till 125 mph when he started pulling a bit due to the evo's long 5th gear.
i must say that the z06 look crazy fast.. to pull on a whipple cobra like that.
i must say that the z06 look crazy fast.. to pull on a whipple cobra like that.
Last edited by Vishnu_Evo8; Oct 17, 2005 at 06:14 PM.
Oct 17, 2005, 08:29 PM
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Originally Posted by loj68
Twin-Turbo Z for whoever thinks in error that they are weak.
That IS weak, it needs a Built motor and then a very expensive TT kit and supporting mods just to make what I can lay down with a simply turbo Upgrade on a stock Bottom end. They DO look very kewl though.