250 Rods OEM and aftermarket?

powerband

2K+
VIP
... appreciate help pointing to info on 250 connecting rods.

Which OEM rods are forged, I'm confused which of the 250 OEM rods are confirmed forged . Current build can use stock 5.880" / 1.50 CH - or close aftermarket rods.

Thanks
 
The C9 rods are forged, maybe others soon after. You can tell by looking at the parting line which are forged and which are cast.
 
Econoline":2td060l2 said:
The C9 rods are forged, maybe others soon after. You can tell by looking at the parting line which are forged and which are cast.

I'm certain, 1969 to 1975 forged.

Mike1157's D6 cast iron rods from his 250 Maverick engine with Raceteks in the Glia Monster.

D6 is thick embosed = Cast



"https://www.stangnet.com/mustang-forums/attachments/20180107_163527_zpsjgspa508-jpg.596752/"

20180107_163527_zpsjgspa508-jpg.596752


June to October 1975, Ford changed the 250 rod and bearing, downdgraded to fat embossed D6 castings, and the bearings got a different crush radius.

1975 250 rods are still listed as C9DE-A.



cf. lavrons forged C9 rod caps on E6 2.5 forged conrods

viewtopic.php?f=1&t=77057&hilit=250+conrods
lavron":2td060l2 said:
I was messing with comparing the rods today and pulled one of the rod bearings out, pretty sure they are the original.

274994029fc8eb103e29688c1f170ec5.jpg


And I know this is a crude way to show the difference in length but I don't have a way to press the wrist pin out, so the "precision" ruler is sitting against the pin and then you can see on the other one I was measuring from edge to edge on the holes.

13fee310c10817916755f92d0b68280e.jpg


A bit of difference in length, hopefully I have solved my quench issues if I can keep from getting the CR too high.

I also was checking to see if the rod bolts were the same because I am wanting to have ARP bolts installed and I wasn't sure what to order, looks like regular SBF bolts will work, have to see if I can find a 6cyl set so I don't have to buy the 4 extra, expensive bolts - I think we know why that is :roll: I switched the rod caps and nuts as suggested here to see if they were a match, I was pretty confident they would but better safe than sorry.

e265145cffa2b35bc873df7cd144ba76.jpg


Everything looks good for ignition!

0d82212e3c534d344d1ae44fbe188521.jpg


I really need to order pistons soon so I think I need to do some more measuring.

See Ya,
Mike
 
Thanks for the pic Dean! (post #3).
Seth:
I C no 'parting line" as all R set on the flat, assume the 'line' is on the 'edge'.
How could I tell 'forged' from viewing that 'line' 1 frm anyother?

Thnx for the initial Q powerband~
I'm getting a list of forged stock rods:
all 200/250 1969 - '75
:unsure:
OK so far?
 
I C no 'parting line" as all R set on the flat, assume the 'line' is on the 'edge'.
How could I tell 'forged' from viewing that 'line' 1 frm anyother?


... sounds like all C9xx 250 5.88" rods should be forged, I would like to know how to visually identify forged rods ?

thanks

... in an earlier posting thread there was mention of theoretical 'absolute' HP of different rods - related to piston speed .

(The connecting rods in the vintage 250 tri-power are "shot peened and balanced/matched" - pistons are IH 258 3.75 " and I shift at 5500 ... )

hav efun
 
Here is another strong forged OEM connecting Rod that can be used in the 250 short blocks they will require a custom sourced piston. A Ford 300 / 4.9 con Rod measures 6.2097 (6.21 rounded off) big end is 2.123, small end is .912 for the 1965 to 1968 rods and .975 for the 1969 to 1997 rods. These are about the longest OEM Ford connecting rods that can fit in a 250 block. Bob "62Ranchero200" used these with a set of Forged RaceTek pistions in his 250 build several years ago (see below link).

You can tell a factory stock forged connecting rod by the wide parting line on the side of the I Beam (see the second link below). For an example of Mike's "Lavern" 2.5 HS E6 Ford forged con rods (in a 5.990 length) that he's using in his new 250 short block build up. Good luck (y) :nod:

Bob's 250 Build Using 300 Rods
viewtopic.php?t=70677#p549158

IDing a Forged OEM Rod, Example a 2.5 HS Rod
viewtopic.php?f=1&t=77057&hilit=200+rod&start=50#p599153
 
powerband":2aqhbowd said:
I would like to know how to visually identify forged rods ?... )
hav efun

Me too. Is it possible? Any simple tests?
 
Here is a list of Eagle connecting rods that will work in the Ford 250 six.
They are Chevy LS rods which do not have an offset beam.
The list contains both "I" beams and "H" beams.
Prices for a set of 8 range from $200+ to $400+

Length, Part Number, Weight, Design, Journal Size, Pin size HP rating
6.100 SIR6100MLW ______ 600g I-Beam 2.100" 0.945" 500
6.100 SIR6100NLW _______600g I-Beam 2.100" 0.943" 500
6.125 SIR6125BBLW ______600g I-Beam 2.100" 0.927" 500
6.125 FSI6125O___________605g I-Beam 2.100" 0.927" 700
6.125 FSI6125O2000 _____605g I-Beam 2.100" 0.927" 900
6.200 SIR6200BBLW ______610g I-Beam 2.100" 0.927" 500

6.100 CRS6100L3D _______650g H-Beam 2.100" 0.927" 750
6.100 CRS6100M3D_______650g H-Beam 2.100" 0.945" 750
6.125 CRS6125BLW_______550g H-Beam 2.100" 0.927" 600
6.125 CRS6125O3D ______620g H-Beam 2.100" 0.927" 750
6.125 CRS6125O3D2000 _620g H-Beam 2.100" 0.927" 1300
6.200 CRS6200O3D ______650g H-Beam 2.100" 0.927" 750
6.200 CRS6200O3D2000 _650g H-Beam 2.100" 0.927" 1300

The big ends are .940" wide.
For a discussion on big end width differences see:
viewtopic.php?p=625198#p625198

[image]https://www.dropbox.com/s/eklph8jgb8klmzy/Eagle%20rod.jpg?raw=1[/image]
 
...Are you willing to use a custom piston?

Thanks for the interest and replies:

Pistons for the build are TRW 200/250 FORGED 2217F's with stock dimensions (comp height etc ... ) no longer available (AFAIK). I had my favorite machinist take a look at them for usability, measure for rings and give his insight on proposed build. I'm still deciding on the 200 vs 250 but leaning toward the 250..

have fun
 
Are the TRW 2217F pistons press fit only or can they be used with a floating pin?
If they can be used with floating pins then there are some connecting rod possibilities.
Looking at a choice of 5.850" 5.950" and 6.000" lengths.
 
Back
Top