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  • November 21, 2024, 05:14:17 AM

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Author Topic: Replacing the 80 HP 2.5L Iron Duke with a 140 HP 3.0L Mercruiser Iron Duke  (Read 73599 times)

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Offline Creepingmonza

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Re: Replacing the 80 HP 2.5L Iron Duke with a 140 HP 3.0L Mercruiser Iron Duke
« Reply #30 on: September 06, 2015, 08:47:15 AM »
I gota ask,to clarify, do you have a monza or just the motor? Pm me on this please
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Offline vangremlin

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Re: Replacing the 80 HP 2.5L Iron Duke with a 140 HP 3.0L Mercruiser Iron Duke
« Reply #31 on: September 07, 2015, 11:24:01 PM »
Quote from: Creepingmonza on September 06, 2015, 08:47:15 AM
I gota ask,to clarify, do you have a monza or just the motor? Pm me on this please

captspillane seems to be the only one that is knowledgeable on this and he has not been on the site for several months.  Try to PM or email him directly for best results.  Good luck!
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Offline tb30570

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Re: Replacing the 80 HP 2.5L Iron Duke with a 140 HP 3.0L Mercruiser Iron Duke
« Reply #32 on: April 05, 2016, 08:40:14 PM »
here is some swap info from the Fiero forum that might be useful:

http://www.fiero.nl/forum/Archives/Archive-000001/HTML/20120111-2-093668.html

here is some information on a crankshaft swap:

http://www.fiero.nl/forum/Forum1/HTML/093573.html
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Offline Blip Downshift

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Re: Replacing the 80 HP 2.5L Iron Duke with a 140 HP 3.0L Mercruiser Iron Duke
« Reply #33 on: November 28, 2018, 04:51:41 PM »
I am interested in this project and i think it is a cool idea.  However, the SD-4 crank and the mercruiser crank are not the same.  The mercruiser crank is made from ductile iron and the SD-4 is forged steel.
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Offline Blip Downshift

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Re: Replacing the 80 HP 2.5L Iron Duke with a 140 HP 3.0L Mercruiser Iron Duke
« Reply #34 on: November 29, 2018, 09:01:04 AM »
I misspoke, the marine cranks were made of nodular iron.
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Offline WranglerRouser

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Re: Replacing the 80 HP 2.5L Iron Duke with a 140 HP 3.0L Mercruiser Iron Duke
« Reply #35 on: June 24, 2020, 07:29:06 PM »
« Last Edit: June 24, 2020, 07:31:30 PM by WranglerRouser »
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