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Author Topic: Building the 2.5 Iron Duke  (Read 1693 times)

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Offline RookieSX/4

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Building the 2.5 Iron Duke
« on: November 12, 2015, 01:13:14 PM »
My apologies if this has already been covered somewhere else but has anyone out there beefed up an Iron Duke? Been tossing the idea around in me head lately rather than swapping engines for more power...try and see what i could get out of this little 4 banger...
1981 AMC Eagle SX/4 w/2.5l Iron Duke and no 2wd-4wd switch!

Offline Amc1320

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Re: Building the 2.5 Iron Duke
« Reply #1 on: November 12, 2015, 07:08:44 PM »
It's been done, they used those engines in some racing applications years ago, there is also a marine version. So there are some speed parts around.

Not sure how many hp you can get out of it, but anything more would be a big help!
Rob c
84 Eagle Limited Wagon (driven everyday)
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Manchester, TN

Offline RookieSX/4

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Re: Building the 2.5 Iron Duke
« Reply #2 on: November 12, 2015, 07:32:30 PM »
Awesome! thank you! Ill have to do more research to see what i can come up with for parts...
1981 AMC Eagle SX/4 w/2.5l Iron Duke and no 2wd-4wd switch!

Offline eaglefreek

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Re: Building the 2.5 Iron Duke
« Reply #3 on: November 12, 2015, 09:04:34 PM »
If you want to keep it a 4 cyl. I'd be tempted to install a fuel injected Jeep 2.5L.
1986 AMC Eagle Wagon 4.2L/4.0L head, AW4,NP242, Chrysler 8.25" rear.
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Offline RookieSX/4

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Re: Building the 2.5 Iron Duke
« Reply #4 on: November 14, 2015, 05:27:11 PM »
Its not about keeping it a 4 cyl  its about sticking with the factory engine
1981 AMC Eagle SX/4 w/2.5l Iron Duke and no 2wd-4wd switch!

Offline Nightpath

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Re: Building the 2.5 Iron Duke
« Reply #5 on: November 14, 2015, 10:52:15 PM »
Remember that there are 2 types of the 4 cylinder motors in the Eagles. 1 is GM made, other is AMC. I posted the sender thing on the Facebook page. The actual GM 4 banger could be beefed up a bit.

Now the AMC was plopped into vehicles for years. It might be an idea to find one that was in a 1996+ Dodge Dakota with a manual transmission. MPFI is yummy. And there are plenty of performance mods out there.

Offline vangremlin

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Re: Building the 2.5 Iron Duke
« Reply #6 on: November 15, 2015, 10:34:39 AM »
Did the AMC 4 cyl ever make it into the Eagles? It was the understanding that AMC dropped the 4 cylinder as an Eagle option before they brought out their own.
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Offline Nightpath

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Re: Building the 2.5 Iron Duke
« Reply #7 on: November 16, 2015, 01:05:24 PM »
GM 4 bangers were in the early Eagles, the AMC made them in after 82 or 83 I think.

Offline RookieSX/4

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Re: Building the 2.5 Iron Duke
« Reply #8 on: November 17, 2015, 05:01:49 PM »
Ok so I guess the next topic would be what transmission/T-case to hang off the back of a beefed up Iron Duke?
1981 AMC Eagle SX/4 w/2.5l Iron Duke and no 2wd-4wd switch!

Offline jpgreen

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Re: Building the 2.5 Iron Duke
« Reply #9 on: November 17, 2015, 11:27:48 PM »
I say light. T5.

Offline jpgreen

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Re: Building the 2.5 Iron Duke
« Reply #10 on: November 17, 2015, 11:28:41 PM »
Love to see it. Had an iron duke s10 and loved it.

 

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