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Seth
Dodge Dakota
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1/15/2003
22:01:37
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 Subject: 3.9 rod question
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Message:
Im doing a rebulid to my 98 3.9, doesnt need it but im getting ready to install a large shot of nitrous (150). Im having trouble finding rods for it though. I know the 318 rods will work but i've heard that the crank has to be ground due to wider rod journals. If anyone can help me out on this I would be greatly appreciative.
thanks
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tbirdkiri
Dodge Dakota
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1/15/2003
22:44:42
| RE: 3.9 rod question
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haha! im dealing with this same issue, supposedly there is something called a chamfer that need to be ground out. but any machine shop should be able to handle it.
so you gonna go with H beams? or I?
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dodgeboy
Dodge Dakota
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1/16/2003
19:13:45
| RE: 3.9 rod question
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The stock rods are actually allready forged, you can really just have them shot peened and be done with it. I did not realize there was a difference in the rods back when I built my 3.9. A machine shop can easily enlarge the useable face on the rod journals so that the 318 rods will work.
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Seth
Dodge Dakota
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1/16/2003
22:16:47
| RE: 3.9 rod question
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im going with H-beam, probably could use I beam but from what i have heard the H-beams hold there integrity better with large amounts of nitrous.
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chris
Dodge Dakota
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1/19/2003
20:41:52
| RE: 3.9 rod question
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have the shop manual for my 93 dak the in it the rods are all the same 3.9-5.2 dosent list a difference unless its a type-O
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