turbo versus blower
Posting Guru
Joined: Dec 2005
Posts: 1,528
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From: Peterborough, Ontario
We're dealing with a bunch o' youngsters that want to make their IDI perform like the latest and greatest diesel out there, rather than simply for the easy and cheap to maintain diesel that it is.
Elder User
Joined: Feb 2010
Posts: 724
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Well to answer the question turbo or blower, I'd say turbo.
You can cut spool time just by where you mount the turbo...mines right off the manifold so (I'm guessing) it will have very little spool time if any.
As to answer your other questions about meth and twin turbos, meth is pointless in our engines, unless you plan to enter pulling matches with it, and twin turbos are pointless too, you would have to use two small turbos that probably wouldn't out out as much boost as one big turbo.
And to tell you the truth if I was you I would have left the A/C and said screw the twin turbo cause as much as I like power I like enjoying the ride on a hot summer day even more.
But of course this is all just my .02
You can cut spool time just by where you mount the turbo...mines right off the manifold so (I'm guessing) it will have very little spool time if any.
As to answer your other questions about meth and twin turbos, meth is pointless in our engines, unless you plan to enter pulling matches with it, and twin turbos are pointless too, you would have to use two small turbos that probably wouldn't out out as much boost as one big turbo.
And to tell you the truth if I was you I would have left the A/C and said screw the twin turbo cause as much as I like power I like enjoying the ride on a hot summer day even more.
But of course this is all just my .02
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Senior User
Joined: Jun 2010
Posts: 421
Likes: 1
looking at what would be the most bang for the buck when have to rebuild the motor. newer blowers don't have to mount ontop of the motor i.e. put it where the a/c compressor was. truck is used for everything from driving to work, off-roading, hauling firewood & building supplies, to towing cars or whatever else in on the trailer. i know motors gas maybe better than diesel on what you can do to make more power cheaply. also everybody has a turbo diesel just looking to maybe stand out, reports are that new duramax will run a turbo and a blower
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Senior User
Joined: Jun 2010
Posts: 421
Likes: 1
also guys i'm 39 not to young anymore. love the simpllicty of the idi, and if wanted 500hp and 1000 ft/lbs wuold buy a newer truck. but looking for reliable without breaking the bank or having a new truck payment.
Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
A roots (screw) type blower can produce pressures into the hundreds of pounds!
Way more than a IDI could possibly handle, and if properly geared they can maintain a desired constant pressure from IDLE to WOT.
Screw type blowers are also used to produce high volume high pressure air for industrial applications.
-Enjoy
fh : )_~
Way more than a IDI could possibly handle, and if properly geared they can maintain a desired constant pressure from IDLE to WOT.
Screw type blowers are also used to produce high volume high pressure air for industrial applications.
-Enjoy
fh : )_~
Senior User
Joined: Sep 2009
Posts: 126
Likes: 0
From: So. Cal
The factory blower on my gasser produces 20 PSI with no problem. Only the ECU (and RPM's) prevent me from being able to use more boost. The blower only robs about 8-10 HP @ WOT.
No BOV - just electrically clutched..
But I would never swap the turbo on my IDI - with the stock 7.3L motor, 10 PSI is just fine...
No BOV - just electrically clutched..
But I would never swap the turbo on my IDI - with the stock 7.3L motor, 10 PSI is just fine...
Postmaster
Joined: Oct 2008
Posts: 3,026
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From: Renton, WA
What vehicle has an electrically clutched blower, is this stock? And how do I get one?
Senior User
Joined: Nov 2007
Posts: 118
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From: Spanish Fork, UT
I hope I don't cause any crap by saying this, but blowers really do suck. They are old fashioned, expensive, unreliable and don't really amount to much good in the end. There was a time when turbos and blowers were head to head, but advancements in technology has caused turbos to take the lead in 30 year technological advantage. A turbo does cause back pressure but a big supercharger consumes atleast 30hp from the crank. So you may be adding 50hp, but you are taking away 30hp which is a net gain of 20hp... Not worth it. Even in a high revving gasoline application blowers aren't that impressive. The reason the V8 guys use them is for simplicity, but it's definitely not the best way to do forced induction. A turbo will cost you less and improve the engine in more ways than a blower can. I can use the example of my friend's mustang 5.0. He had a eaton blower on there running 16psi. Dynoed the 5.0 at 402hp. After the blower blew up he decided to try a turbo. He got a garrett turbo running the same pressure and same tune, 16psi. Dynoed the car 475hp and 489ft lbs. He claimed the turbo improved his gas mileage significantly as well.
Go find an ATS kit and call it good.
Go find an ATS kit and call it good.
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Senior User
Joined: Sep 2009
Posts: 126
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From: So. Cal
AMG only offered electrically clutched superchargers on all their hand-built engines.
IHI made the superchargers in 4 cyl, 6 cyl and 8 cyl versions and you can find them on Ebay from time to time but they are machined to mate up to MB engine blocks. (see pics)
Here's a pic of the SC off my car (it's upside down on the bench) I wrapped the intercooler with ceramic insulation and insulated foil to help prevent heatsoak. You can see the two water hoses in front of the HE.
The IC is directly mounted to the supercharger and sits in the "V" on the engine block. Very efficient design - you can see the electrical connector by the pulley
In this picture you can see the throttle body and the big exit port for the cooled charge air. From there the charge air gets split and runs to the top of the 3 intake ports - you see the bottom ports that bolt up to the engine block.
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Senior User
Joined: Jun 2010
Posts: 421
Likes: 1
it would work just like the drive clutches on a a/c compressor. like i said guys i'm shooting ideas around to see what i like best and to get more infomation, and i thank you all. looks like going to have to have eye surgery so there goes funds for new goodies for awhile. this is one fine site.
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