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Mitsubishi Forums >> Mitsubishi 4x4 & SUV Tech

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Trooper-san
Mudrunner


Reged: 06/08/03
Posts: 257
Loc: San Jose CA
Engine/Transmission Bolt Patterns
      #1265981 - 06/21/12 12:12 PM

I have an '86(?) Montero with a bad engine (spun bearing) and a 3-speed auto transmission. I also have a G54b engine which I feel confident I can get running well. One engine is a wide block and the other a narrow block.

How much of the bolt pattern will match between the two? That is to say, for instance, Can I get all but those two bottom bolts to match? Is it possible to re-drill some bolt holes for a better match? What are my choices?

--------------------
1989 Trooper, 2.6
1989 Trooper, 2.8
1992 Ford F-350, 7.3

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mxmikie
Body Damage is Cool


Reged: 04/12/06
Posts: 1081
Loc: Bouse az
Re: Engine/Transmission Bolt Patterns [Re: Trooper-san]
      #1266002 - 06/21/12 05:56 PM

none they are different wide and narrow do not interchange what motor is in the truck ???? 2.6 or 2.0 ????

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it dosent have to be surrounded by water to be an island

Edited by mxmikie (06/21/12 05:58 PM)


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Trooper-san
Mudrunner


Reged: 06/08/03
Posts: 257
Loc: San Jose CA
Re: Engine/Transmission Bolt Patterns [Re: mxmikie]
      #1266021 - 06/22/12 03:39 AM

Sorry. Guess I forgot that part. Both engines are G54b, 2.6 liter engines. They are the same engine, except that one is a narrow block and one a wide block. Is it 12 1/4 and 13 1/4? I can't imagine why Mitsubishi did such a thing.

--------------------
1989 Trooper, 2.6
1989 Trooper, 2.8
1992 Ford F-350, 7.3

My Photos


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fasteddy
Web Wheeler


Reged: 01/30/01
Posts: 12704
Loc: Flat Creek, GA
Re: Engine/Transmission Bolt Patterns [Re: Trooper-san]
      #1266052 - 06/22/12 06:18 PM

To use a larger clutch...

Just use the good crank in the narrow block, or swap in a 4g63 2.0 or 4g64 2.4 fwd narrowblock.

--------------------
"If you can't be a good influence, don't worry, you can still be a horrid example."


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goobuds
Mudrunner


Reged: 09/24/06
Posts: 274
Loc: wa
Re: Engine/Transmission Bolt Patterns [Re: fasteddy]
      #1266074 - 06/23/12 08:43 AM

to fasteddy. all ways full of good info with out the
b/s. plus you have help me ot more then once. we as in me thank you. as do others.
also if you dont want to mess with a carb go with the 2.4 narrow block or even the 2.0 plenty of parts for cheap the 2.6 stuff gets hard to find. en less you want to keep it as stock

--------------------
87 raider with 2.3td ,5sp, manual hubs, rear lsd, duel bouncy seats currently rebuilding engine


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