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Old Jul 29, 2008 | 05:40 AM
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Old Jul 29, 2008 | 05:53 AM
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So a big problem with manis is them cracking? Well, when you have a hefty turbo on it, add in heating and cooling, expanding contracting, whatever whatever. Why not just make a support bracket? Just something to take some weight off the runners.

Like this horrid laptop touchpad paint document.
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Old Jul 29, 2008 | 08:14 AM
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Originally Posted by vertigo
Name one performance advantage of top mount?

Yah don't think too hard.. Its done for looks, and is slightly detrimental to performance.
Are you serious? So heat transfer from the turbo to the block has no effect on performance, heat dosent rise, and air has an easier time trying to go down then up. This is what your saying correct?
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Old Jul 29, 2008 | 08:27 AM
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Originally Posted by B18C5-EG
Are you serious? So heat transfer from the turbo to the block has no effect on performance, heat dosent rise, and air has an easier time trying to go down then up. This is what your saying correct?
No, im not concerned with the heating of the block, nor the cooling of the turbo.
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Rear brake only for use when front brakes squeak whilst slowing for hot bitches
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Old Jul 29, 2008 | 08:47 AM
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Originally Posted by M374llic4
So a big problem with manis is them cracking? Well, when you have a hefty turbo on it, add in heating and cooling, expanding contracting, whatever whatever. Why not just make a support bracket? Just something to take some weight off the runners.

Like this horrid laptop touchpad paint document.
Like dis?


Originally Posted by vertigo
No, im not concerned with the heating of the block, nor the cooling of the turbo.
I run my engines off semen and molasses also, it never thins out
PM me when you need a rebuild
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Old Jul 29, 2008 | 08:59 AM
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Originally Posted by B18C5-EG
I run my engines off semen and molasses also, it never thins out
PM me when you need a rebuild
Must be why you're so slow

How about you PM me when your BMC melts along with your oil drain, and the paint on your hood above your turbo starts discoloring / cracking. The amount of heat transferred fto the block from the turbo is minimal at best.
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Old Jul 29, 2008 | 09:12 AM
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Nice pics! Haven't seen those. Now having seen them, I can't think of one benefit to doing it this way. And these make more power than a traditionally mounted turbo? I can tell you right now that they don't.

The first one is a little crude. It's just an SSAC with the flange hacked off and an EWG added. The second one is pretty sweet, but I just don't see any advantage to it. It's not a shorter route, or better, or worse; just different. And he gets one million vertigo cool points... whatever the exchange rate is on those. And he has a clean setup even though I don't like blue.

So now back on topic, you'll see in the second pic that this manifold uses a similar "giant merge" (tm) design that the original poster used. Personally, I think that this is fine. Even the lowest form of manifold, the log manifold, will still make good power up to a certain point, even with it's fluid-dynamics-nightmare way of moving hot gasses.
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Old Jul 29, 2008 | 09:18 AM
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Originally Posted by vertigo
The amount of heat transferred fto the block from the turbo is minimal at best.
Agreed here. Air is a great insulator. Plus we're not talking about drastically different turbo locations (save for the GT47 "where my AC compressor goes" mount). So what if the block is seeing 2-300* air on the outside. It's seeing 1600-1800* air on the inside. Plus the block temp is regulated anyways. If you had a water-cooled brake master cylinder, that shit wouldn't melt either.
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Old Jul 29, 2008 | 10:09 AM
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Originally Posted by Epstein
Nice pics! Haven't seen those. Now having seen them, I can't think of one benefit to doing it this way. And these make more power than a traditionally mounted turbo? I can tell you right now that they don't.

The first one is a little crude. It's just an SSAC with the flange hacked off and an EWG added. The second one is pretty sweet, but I just don't see any advantage to it. It's not a shorter route, or better, or worse; just different. And he gets one million vertigo cool points... whatever the exchange rate is on those. And he has a clean setup even though I don't like blue.
He doesnt get a million vertigo points for being different, he gets a million vertigo points for a more efficient design. Bottom mount has potential for better intercooler piping, less sharp exhaust turns, lower center of gravity, and less shit getting melted. Top mount = for looks only 99% of the time. Kinda like people that slam their cars and change their oil pans like underwear.
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Old Jul 29, 2008 | 10:27 AM
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Originally Posted by vertigo
potential for better intercooler piping,
It looks like you're going to need a pretty sharp bend on the hot pipe to get it past the frame. I'm going to have to say negligible, here.
Originally Posted by vertigo
less sharp exhaust turns,
Judging by the second pic, I'm not seeing any advantage at all. In fact my top mount has similar bends AND a high angle collector as well.
Originally Posted by vertigo
lower center of gravity,
You've got something here. Turbos are heavy. But we're really down to bench race, er, handling here.
Originally Posted by vertigo
and less shit getting melted.
OK now you're dreaming. If your shit is getting melted, proper heat managment or materials haven't been used. All of the turbo components are all hot and occupy the same space. Proximity to heat sensitive components is more about design than it's top/bottom mount style.
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