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General Forums => The Mess Hall => Topic started by: impboy65 on February 28, 2008, 05:29:52 PM

Title: 2.5L from 92 Yj into 90 yj?
Post by: impboy65 on February 28, 2008, 05:29:52 PM

 :confused: I'm restoring a 90 yj. It was a 2.5L TBI but the motor was gone when I got it. I just got a wrecked 92 yj with the 2.5L MFI. If I put the engine, harness, and ecu from the 92 into my 90, will my 90 gauges work? Can this even be done? Thanks
-Dirk

Title: Re: 2.5L from 92 Yj into 90 yj?
Post by: Jeffy on February 28, 2008, 06:48:54 PM

No, gauges as well as the harness in the dash is different.  You'll need to gauges and the speedo/tach as well.  Speed sensor harness and sender too.  Might as well get the tank and pump while you're at it.

Title: Re: 2.5L from 92 Yj into 90 yj?
Post by: impboy65 on February 28, 2008, 09:25:39 PM

Could I just get the TBI setup and put it in place of the MFI? I have the 90 ecu. I bought the Jeep after the stupid guy threw away the "tired" 4 banger. :brick: everything else is complete.

Title: Re: 2.5L from 92 Yj into 90 yj?
Post by: Jeffy on February 28, 2008, 11:01:06 PM

Quote from: impboy65 on February 28, 2008, 09:25:39 PM

Could I just get the TBI setup and put it in place of the MFI? I have the 90 ecu. I bought the Jeep after the stupid guy threw away the "tired" 4 banger. :brick: everything else is complete.

You could but then you'll want more power and with MPFI you gain 11 solid horses. It also opens the door for more aftermarket parts.

Title: Re: 2.5L from 92 Yj into 90 yj?
Post by: impboy65 on February 29, 2008, 07:47:39 AM

Thanks for all your help. I guess I'll be completely retrofitting the 90 then. I'll post some pics of the process in the poseur section.

Title: Re: 2.5L from 92 Yj into 90 yj?
Post by: impboy65 on February 29, 2008, 08:38:55 AM

Never mind, just found the projects section. Duh