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Old 06-03-2004, 01:45 AM   #1
pistoffjstr
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Default Smallest Turbo

Not sure if this is the right place to ask but ....
What is the smallest turbo there is ?
subaru or non subaru
its not for my car but for another toy
any info would be great
thanks
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Old 06-03-2004, 10:23 PM   #2
Unsung Boxer
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look for one off of a TWIN turbo application, generally tehy are smaller

-Jake
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Old 06-03-2004, 11:34 PM   #3
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HEHE what do you have planned? a turbo lawn mower. The smallest turbo i have ever seen is one from a EA81t subaru brat. Also some motorcycle was turbo charged back in the day with a small IHI turbo.
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Old 06-03-2004, 11:39 PM   #4
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a Garrett GT12 is pretty small...the inlet for it is like 1"!!! go to www.turbobygarrett.com and check it out. It may work for what you're wanting to do.
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Old 06-04-2004, 07:39 AM   #5
pistoffjstr
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Quote:
HEHE what do you have planned? a turbo lawn mower.
How did you know

seriously me and a friend of mine built a riding tractor that dose about 30 mph and now we want to try to get really hurt
thanks for all the input ill check out these suggestions and one day post a movie of my crazy tractor
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Old 06-04-2004, 11:18 AM   #6
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The KP31 from 3K-Warner (a part of BorgWarner) is pretty small.

It's currently used in the Daimler Chrysler 0.8L Smart diesel in Europe and can spin up to 290,000 RPM. Here's a large cut-away view of the entire turbocharger:
http://www.turbos.bwauto.com/files/p...nger_36_42.jpg
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Old 06-04-2004, 04:32 PM   #7
pistoffjstr
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that is one small turbo
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Old 06-04-2004, 11:11 PM   #8
Scoobie Steve
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Quote:
Originally posted by pistoffjstr
How did you know

seriously me and a friend of mine built a riding tractor that dose about 30 mph and now we want to try to get really hurt
thanks for all the input ill check out these suggestions and one day post a movie of my crazy tractor
Must be something in the air here in Bangor. I try to turbocharge EVERYTHING! Right now every car i have is turboed. I was working on putting a turbo on my snowmobile and dirt bike but lost interest.

Some things to ponder when turboing a lawn mower. You cant just blow through the carb, you will blow the gas right back into the gas tank. You need to mount the carb on the intake of the turbo. Also a lawn mower carb is junk. A small motorcycle carb is much better because you can file the main jet needle to richen the mixture at any throttle position. Most lawn mowers use a fixed magneto for spark(NO ADVANCE). There is alot more power in those motors with a spark advance. Also a turbo needs oil pressure, not too many mowers have a pressurized oil system.

Does your lawn mower run out of power or RPMs?
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Old 06-05-2004, 07:38 AM   #9
pistoffjstr
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good call scoobie steve
you brought up some good points we were basically just looking to put a turbo on it it dosnt necisarily have to do anything just look neat the tractor goes like hell though you should stop by and check it out one day
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Old 06-05-2004, 02:21 PM   #10
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Quote:
Originally posted by Scoobie Steve

Some things to ponder when turboing a lawn mower. You cant just blow through the carb, you will blow the gas right back into the gas tank. You need to mount the carb on the intake of the turbo. Also a lawn mower carb is junk. A small motorcycle carb is much better because you can file the main jet needle to richen the mixture at any throttle position.
if youre already going to get a new carb, you might look into blow through carbs-i think thats what theyre called. wont mounting the carb before the turbo require you to run really rich.
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Old 06-05-2004, 04:01 PM   #11
Scoobie Steve
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Using a blow through carb requires a pressurized fuel system and a 1:1 RRFPR to keep fuel pressure above boost level, not the easiest way to turbo a lawn mower
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Old 06-06-2004, 03:24 PM   #12
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Just to document this in a thread I can find later, it appears the TD02 from MHI was described as the world's smallest turbocharger when it was introduced in the 1983 Mitsubishi Minica. MHI now apparently also makes a TD015 model line, which I suspect is even smaller.
http://www.mhi.co.jp/gsh/epict142.htm

Last edited by Jon [in CT]; 06-06-2004 at 04:32 PM.
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