[Diy_efi] Air fuel meters

CobraMan CobraMan
Sun Apr 17 19:32:37 UTC 2005


Size the compressor for max HP --- how much air can it handle --- and size 
the turbine housing/trim to get the required boost - like changing blower 
pulleys. TomS
----- Original Message ----- 
From: "James Seabolt" <turbofiat at hotpop.com>
To: <diy_efi at diy-efi.org>
Sent: Friday, April 15, 2005 7:31 PM
Subject: Re: [Diy_efi] Air fuel meters


> At 10:02 PM 4/14/05, you wrote:
>> From my little experience, without some sort of boost pressure relief, 
>> turbos can be sized for power from X RPM to 2X RPM. That is, if it starts 
>> at 2300, it's done at 4600 and if it starts at 3500, it's good to 7000 
>> RPM. Of course, everyone will have an exception.  TomS one exception is 
>> the dual in-line turbo setups.
>
> Maybe this explains something. On my Yugo the turbo is a T25 (which is 
> usually typically on engines under 2000ccs) but it was sourced from a 2.3 
> liter Saab. It's now on a 1500cc engine. I really have to push this car 
> hard to build up 7 lbs of boost. Most of the time it pulls only 4-5 lbs.
>
> The trim is not seized up on this turbo. It spins freely. The only thing I 
> can think of is the trim is just too large for this engine.
>
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>
> James Seabolt
> Tennessee, United States
> Homepage --->>> http://users.chartertn.net/jseabolt/
>
> 2003 Subaru Baja
> 1980 FIAT 2000 "turbo" Spider
> 1968 Ford Fairlane 500 (Not a Ford Galaxie!!)
> 1987 Yugo GV 1500cc also turbocharged
>
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