Apparently people just aren't listening. There are no less than two in the new Hot Rod mag, and one of them is a dedicated Mustang racecar. Don't people get it?
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| Author: | DionR [ Sun Sep 23, 2007 3:34 pm ] |
| Post subject: | Rear Mount Turbos |
Apparently people just aren't listening. There are no less than two in the new Hot Rod mag, and one of them is a dedicated Mustang racecar. Don't people get it?
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| Author: | sandy in BC [ Sun Sep 23, 2007 3:52 pm ] |
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There are lots of things I dont get.....near the top of the list....rear mounted turbos. |
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| Author: | gmader [ Sun Sep 23, 2007 4:20 pm ] |
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I am sure that the rear mount approach does in fact work, but with losses in efficiency and the need for special oil pumping. Can I ask one question? I would like to see a picture of one real race car that has its' turbo mounted that far away from the manifold. Every one that I have seen on an IRL car, dragster, Ferrari or whatever mounts the turbo as close to the headers/manifold as possible. If there were some examples of really high performance machines using this other approach, it would convincing. |
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| Author: | slantzilla [ Sun Sep 23, 2007 4:46 pm ] |
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Rear mounted turbos are the latest craze for the 10.5 Outlaw gang. They are doing it simply from space limitations instead of trying to cram everything under the hood. Some are only putting the intercoolers in back, but most who do it have small chassis cars. Rear mounted turbos in 10.5 cars have nothing to do at all with a rear mount turbo on real street cars. 
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| Author: | DionR [ Sun Sep 23, 2007 8:20 pm ] |
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Quote: I am sure that the rear mount approach does in fact work, but with losses in efficiency and the need for special oil pumping.
Pg 28 of the November issue of Hot Rod (on the shelf now), and it is an Outlaw 10.5 Mustang. Twin 88mm turbos just ahead of the taillights. He's claiming 3000 hp, but it was just an under construction pic, too.Can I ask one question? I would like to see a picture of one real race car that has its' turbo mounted that far away from the manifold. Every one that I have seen on an IRL car, dragster, Ferrari or whatever mounts the turbo as close to the headers/manifold as possible. If there were some examples of really high performance machines using this other approach, it would convincing. The other one is a '63 Tempest LeMans with a BB Chevy and twin turbos just ahead of the rear end. Guess the Tempest had a rear mount trans and had lots of room under the floor when they went to a standard trans location. Oh, and they are claiming over 1000 hp, with little turbo lag. Car has run 9.86 at 149 mph. |
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| Author: | mpgmike [ Sun Sep 23, 2007 11:21 pm ] |
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I don't think they are marketed for the high-end racer application. Most of the ones I've seen are used on street vehicles with cluttered engine compartments. Even with lost efficiency, the wastegate still is required (meaning there is more than enough power on tap). Here is one with lots of pics: http://www.mpgresearch.com/viewtopic.php?t=1767 Mike |
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| Author: | slantzilla [ Mon Sep 24, 2007 6:20 am ] |
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Quote:
Pg 28 of the November issue of Hot Rod (on the shelf now), and it is an Outlaw 10.5 Mustang. Twin 88mm turbos just ahead of the taillights. He's claiming 3000 hp, but it was just an under construction pic, too.
3000 is a reasonable number for an Outlaw car. They kill off a ton of HP on the low end to keep the car hooked up. That's why fans love the 10.5 cars. Lots of crashes and big wheelstands. Kinda like watching a bottle rocket with the stick cut off. 
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| Author: | DionR [ Mon Sep 24, 2007 12:32 pm ] |
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Quote: Kinda like watching a bottle rocket with the stick cut off.
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| Author: | DionR [ Mon Sep 24, 2007 12:35 pm ] |
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Quote: I don't think they are marketed for the high-end racer application. Most of the ones I've seen are used on street vehicles with cluttered engine compartments.
Don't know, almost 150 mph in the quarter seems pretty high end to me. Oh, and this was a custom setup with tractor turbos.And the Outlaw 10.5 car is definitely high end. Quote: Even with lost efficiency, the wastegate still is required (meaning there is more than enough power on tap).
Now that's and interesting comment. Never thought about that.
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| Author: | Dart270 [ Mon Sep 24, 2007 1:05 pm ] |
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Why would you want rear mount on a Slant application? There is a ton of space in there to eat up. Sam P has EFI, turbo, intercooler, AC, PS, bells, whistles, etc under his Dart hood. Lou |
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| Author: | DionR [ Mon Sep 24, 2007 4:08 pm ] |
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Quote: Why would you want rear mount on a Slant application?
Can't agree more, it makes absolutely no sense to put a rear mount turbo on a slant.I have to admit that while I'm not advocating the system, I am fascinated with the absolute hate that some people have for it. I will admit that part of the reason I posted this was probably more to poke the bee's nest rather than stir up honest discussion. I know that it was wrong, but I've been bitten by the "rear mount hate club" for even mentioning it, even if I wasn't a supporter (not here, more over at TurboMustangs.com). I just find it fascinating to see the irrational distaste that comes over people at the subject, and anything that even suggests the possibility that it might work in some circumstances defies my willpower not to point out. It was wrong, I know, and I apologize for it.
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