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Rod side clearance ??
#1783895
03/19/15 08:14 PM
03/19/15 08:14 PM
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Joined: Mar 2005
Posts: 576
Texas
ChevyTS
OP
mopar
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OP
mopar
Joined: Mar 2005
Posts: 576
Texas
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I am working with a 440 source RB 4.250 stroke crank and a set of Eagle 7.100 rods. The problem I am having is that the rods are two wide to fit the crank. The rods seem to be Mopar width and the crank pin is Chevrolet width. Has any one found this problem before?
T & K Performance
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Re: Rod side clearance ??
[Re: ChevyTS]
#1783896
03/19/15 09:14 PM
03/19/15 09:14 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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I think they make a deal about it on their site like it is a good thing --perhaps for them if it makes you use their rods? I think you could work on the eagles and make it work--how much wider are they?
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Re: Rod side clearance ??
[Re: ChevyTS]
#1783897
03/19/15 09:26 PM
03/19/15 09:26 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I have had to surface grind SB rods to fit the crank on one of my engines... I should have gone back to the crank company to have them do their job right.. he messed up and turned the crank to chevy diameter but didnt do the width right.. on my last engine I did the same thing but went back to him and he did the width.. on the SB I ground .013 off the inside of each rod to fit with clearance 
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Re: Rod side clearance ??
[Re: MR_P_BODY]
#1783898
03/19/15 09:45 PM
03/19/15 09:45 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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They seem to be addressing the issue of Eagles on regular cranks having a mile of side room--supposed to be all kinds of oil Bogeymen bad things but I have NEVER seen any harm from tons more side room than we really need--"oh it bleeds off oil yadda yadda" I say maybe on yours but has never hurt any builds I had --Yes if you are taking a test >055 per pair is way wide but--does it hurt anything? I say no big deal but I do understand why they would want to correct this with the specs on their cranks and rods and make it more correct--I think yahoo Except--then when you go to use others rods you get --ehh..some grinding to do--all in the game of engine building me boys--these days with parts from all parts so to speak Nothing is a given or fits--Respect your engine builder--he is fighting this EVERY single day-- Never build an engine shop beside a liquor store--it is bad for the engine builders 
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Re: Rod side clearance ??
[Re: ChevyTS]
#1783900
03/19/15 10:32 PM
03/19/15 10:32 PM
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Joined: Nov 2004
Posts: 3,544
Syracuse,NY
CompWedgeEngines
master
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master
Joined: Nov 2004
Posts: 3,544
Syracuse,NY
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Eagle rods are set up that way to fit Eagle cranks. Most any other aftermarket steel rod will fit the offshore cranks with the BBC journals. You could have them surface ground,or just get the right rods.
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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Re: Rod side clearance ??
[Re: dvw]
#1783902
03/19/15 10:43 PM
03/19/15 10:43 PM
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Joined: Mar 2005
Posts: 576
Texas
ChevyTS
OP
mopar
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OP
mopar
Joined: Mar 2005
Posts: 576
Texas
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Quote:
Mopar rod big end width spec is 1.017", BB Chevy is .992"
Doug
Thanks Doug
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Re: Rod side clearance ??
[Re: CompWedgeEngines]
#1783903
03/19/15 10:45 PM
03/19/15 10:45 PM
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Joined: Mar 2005
Posts: 576
Texas
ChevyTS
OP
mopar
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OP
mopar
Joined: Mar 2005
Posts: 576
Texas
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Quote:
Eagle rods are set up that way to fit Eagle cranks. Most any other aftermarket steel rod will fit the offshore cranks with the BBC journals. You could have them surface ground,or just get the right rods.
So that means that Eagle cranks use eagle rods. I see.
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Re: Rod side clearance ??
[Re: dthemi]
#1783906
03/20/15 01:49 PM
03/20/15 01:49 PM
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Joined: Nov 2004
Posts: 3,544
Syracuse,NY
CompWedgeEngines
master
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master
Joined: Nov 2004
Posts: 3,544
Syracuse,NY
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Havent tried it that way yet..lol... 
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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Re: Rod side clearance ??
[Re: Thumperdart]
#1783910
03/21/15 12:28 PM
03/21/15 12:28 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
Update. The crank was 2.004 2.006. the rods were 2.007. I machined the rods to .9935 .994 I have .0014 ish side clearance
Too tight imo..........
He has .008 clearance now.. thats even tight to me
(not the .001+ he shows)
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Way to loose on rod side clearances works good on Mopar stroker motors 
