Eagle connecting rod burnt cap

General engine tech -- Drag Racing to Circle Track

Moderator: Team

Post Reply
1972ho
Guru
Guru
Posts: 1304
Joined: Thu Nov 21, 2013 12:52 am
Location:

Eagle connecting rod burnt cap

Post by 1972ho »

Do you think this rod is still usable with the lower cap burnt like it is.I measured it and it’s still maintained it’s roundnessGo/No Go
You do not have the required permissions to view the files attached to this post.
mag2555
Guru
Guru
Posts: 4602
Joined: Sun Sep 18, 2011 11:31 am
Location: Heading for a bang up with Andromeda as we all are.

Re: Eagle connecting rod burnt cap

Post by mag2555 »

I would not count on the rods tempering still being as what’s needed, and I mean both halves of the rod seeing as the big end is showing discoloration also from what I can see.
You can cut a man's tongue from his mouth, but that does not mean he’s a liar, it just shows that you fear the truth he might speak about you!
miniv8
Expert
Expert
Posts: 897
Joined: Mon Sep 11, 2006 5:22 pm
Location: ICELAND

Re: Eagle connecting rod burnt cap

Post by miniv8 »

Most of us don't mind this discoloration in the small end when the pin isn't floating.
I would not sell an engine with a cap like that, but I might run one for my self.. might.
Magnús Aðalvíkingur Finnbjörnsson
ClassAct
Guru
Guru
Posts: 1028
Joined: Wed Dec 05, 2018 11:55 pm
Location:

Re: Eagle connecting rod burnt cap

Post by ClassAct »

Glass bead it, size it and send it. You didn’t hurt that rod.
BillK
Guru
Guru
Posts: 1756
Joined: Wed Aug 26, 2009 8:30 pm
Location: Beautiful Southern Maryland
Contact:

Re: Eagle connecting rod burnt cap

Post by BillK »

I am sort of tempted to agree with CA but if you don't feel comfortable with it Eagle has always been very good at matching weights in single rods. If you torque it together and it is still round and on size I doubt that you hurt it :) Compare it to one of the other rods in the same set.
Bill Koustenis
Advanced Automotive Machine
Waldorf Md

www.enginerepairshop.com
1972ho
Guru
Guru
Posts: 1304
Joined: Thu Nov 21, 2013 12:52 am
Location:

Re: Eagle connecting rod burnt cap

Post by 1972ho »

These rods are only on about a 500 hp are so engine,if that makes a difference.
fabr
Expert
Expert
Posts: 592
Joined: Sun Jul 21, 2019 8:35 pm
Location:

Re: Eagle connecting rod burnt cap

Post by fabr »

When I was poor I ran them like that with no issues .700ish HP If it was still round it wasn't as hot as it looks. The bearing was but the rod itself wasn't. At least that is what I think. :wink:
User avatar
modok
Guru
Guru
Posts: 3323
Joined: Sun Jun 06, 2010 1:50 am
Location:

Re: Eagle connecting rod burnt cap

Post by modok »

You can also wire brush it, to remove the color.
Geoff2
Guru
Guru
Posts: 1985
Joined: Mon Nov 09, 2015 4:36 pm
Location: Australia

Re: Eagle connecting rod burnt cap

Post by Geoff2 »

If it is within spec, why is the discolouring on the cap uneven, biased more to the left? Why did it overheat?
cgarb
Guru
Guru
Posts: 2009
Joined: Wed Jul 09, 2014 11:50 am
Location: Maryland

Re: Eagle connecting rod burnt cap

Post by cgarb »

I ran one like that also. I bought a motor that tore the crank up I assume due to an oiling issue. Two of the rods were bluish like that. I just wire brushed the color off and checked them for size, they were ok so I ran them again. I had not issues, they are still in the engine today.
Post Reply