SD> need help with omni

[Rich Bryant]

The compression ratio is generally what hurts the gas mileage on a turbo 
car.

The TBI intake isn't very good but overall it is a much better 
system.  It isn't necessarily that carbs are always bad, but the ones that 
came on these cars were...  With a TBI conversion you just swap the intake 
and exhaust manifolds and keep the engine the same.

Wiring(hood and dash), the TBI injector/airbox, and fuel tank, and 
probably the alternator (which should be changed anyway to the newer 
nipondenso alternator anywway) would also have to change.  It is a lot of work.

It would however be capable of something that the carb cars werent... 
Running well in both hot and cold weather without adjustments!

-Rich




On Fri, 11 Jan 2008, amoparx at comcast.net wrote:

> Date: Fri, 11 Jan 2008 18:13:45 +0000
> From: amoparx at comcast.net
> To: Rich Bryant <rbryant at sdf.lonestar.org>, rcook24 at columbus.rr.com
> Cc: shelbydodge at imagilist.com
> Subject: Re: SD> need help with omni
> 
> Changing to TBI would be more reliable, but I think the milage would suffer a bit.  I don't know for sure, but I had fantastic mileage with a carbed 2.2 (and turbo's) and can't seem to get close to that with a 2.5 tbi.  This also may be the year of cars.
>
>
>
> Bob Doherty  http://amoparx.net/mnsdacpic/mnsdac.htm
> Coon Rapids, MN.
>
> 89 LeBaron GTC Convert TII
> 87 Shelby GLHS #784
> 87 Shelby GLHS #654  http://amoparx.net/glhs654/glhs654.htm
> 68 AMC AMX #5816  http://northstaramc.com/northstaramc.html
> 94 Plymouth Sundance 2.5 TBI (My Wifes car that I drive)
> http://geocities.com/amoparx/
>
>
> -------------- Original message --------------
> From: Rich Bryant <rbryant at sdf.lonestar.org>
>
>>
>> IMO The best mod for the car is to pull all of the carb stuff off and swap
>> it to TBI fuel injection. I did this on my 87 Turismo and it was a much
>> much more reliable car. It no longer stalled when cold and it ran much
>> more smoothly. It wasn't however a big power boost. It was a lot of
>> work though...
>>
>> Without swapping the actual engine out that is about the best option in
>> addition to the other mods suggested. Overall The car is going to be
>> stuck at 100hp without a cam, or turbo or some headwork.
>>
>> The turbo is a good option but I am a pretty firm believer that kids
>> should have slow cars to drive. :)
>>
>> -Rich
>
> --