Forged crank

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Wesman07
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Forged crank

Post #1 by Wesman07 » Mon May 07, 2018 12:42 pm

While searching for a forged crankshaft I stumbled apon this company. Anyone hear of them?

http://crankshaftsupply.com/kits_ford.htm

I asked if they were forged, they said
“I have both. 25029S is the forged one $217.00 core charge-$50.00 25073 is
the cast one $188.00 core charge-$50.00. 1 day to ship on both.”
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86 f150 300 efi with advanced stock cam. Np435, Dana 60/ 10.25, 35" BFG's, four link front suspension with 12" travel fox coil overs, custom deaver leaf pack in the rear.

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THE FRENCHTOWN FLYER
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Re: Forged crank

Post #2 by THE FRENCHTOWN FLYER » Mon May 07, 2018 4:41 pm

bUY EVERY ONE THEY HAVE. bUT VERIFY VISUALLY FIRST.
FORD 300 INLINE SIX - THE BEST KEPT SECRET IN DRAG RACING

Wesman07
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Re: Forged crank

Post #3 by Wesman07 » Mon May 07, 2018 6:14 pm

Yeah? I would imagine these are made off shore... I’ll have to ask
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86 f150 300 efi with advanced stock cam. Np435, Dana 60/ 10.25, 35" BFG's, four link front suspension with 12" travel fox coil overs, custom deaver leaf pack in the rear.

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Re: Forged crank

Post #4 by Wesman07 » Tue May 08, 2018 10:09 am

They claim these are OEM and not made off shore
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86 f150 300 efi with advanced stock cam. Np435, Dana 60/ 10.25, 35" BFG's, four link front suspension with 12" travel fox coil overs, custom deaver leaf pack in the rear.

CNC-Dude
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Re: Forged crank

Post #5 by CNC-Dude » Tue May 08, 2018 11:50 am

They probably come from crank rebuilders as cores that they weld back to standard and regrind. They repair burned up mains and rod journal's along with burned up thrusts. They don't cull anything as long as its in one piece. So buyer beware.
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Wesman07
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Re: Forged crank

Post #6 by Wesman07 » Tue May 08, 2018 11:57 am

What is “culling”?
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86 f150 300 efi with advanced stock cam. Np435, Dana 60/ 10.25, 35" BFG's, four link front suspension with 12" travel fox coil overs, custom deaver leaf pack in the rear.

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Re: Forged crank

Post #7 by WorldChampGramp » Tue May 08, 2018 12:19 pm

IT’s Gramps chiming in. The old 'Caveat Emptor' applies as I recently purchased a re-man crank from this same company. Great packaging, crank finish is very good but much to my chagrin and disappointment the crank I received thru Rock Auto Parts in a Crankshaft Supply box with their Logo and part # 25029 is CAST :( . Even though the description on both web sites identifies these cranks as Ford C5TE-F or C6TE-G which I “think” is what forging number appeared on the cranks I used (Way Back When). Attached is a copy of the email confirmation (somewhat redacted ala Congressional undersite) that I received for this order placed in February. Maybe some of the more experienced and informed members like FTF would care to chime in. Gramps

P.S. the old tried and true method [if you have a crank and are not sure] is to stand the crank on end and tap with a hammer, the forged crank will sound like a high pitch tuning fork with a district ring that lasts several seconds. A DullThunk is more like the soud of a cast crank. If you are dealing with someone at arms length who swears they have a steel crank have them send you a close up of the #1 connecting rod throw as pictured from the crank snout looking back over the #1 crank journal. This picture will tell all. I am going to have my colleague Paul Mullerdig out a pic form his files to add a visual to my last description. Good luckeveryone with your steel crank searches. At present ALL odf our three engine builds discussed in the Permanent Fix Cylinder Head section will use a cast crank. Got to go very BZ. Bruce

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Re: Forged crank

Post #8 by WorldChampGramp » Tue May 08, 2018 12:29 pm

Attached is a copy of the email confirmation (somewhat redacted ala Congressional undersite) that I received for this order placed in February.
OOPS forgot to attach email:

300 Forged Crank Order OOPS.pdf
You do not have the required permissions to view the files attached to this post.

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Re: Forged crank

Post #9 by pmuller9 » Tue May 08, 2018 2:30 pm

Forged steel crankshaft forging number.

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Re: Forged crank

Post #10 by CNC-Dude » Tue May 08, 2018 3:59 pm

Wesman07 wrote:What is “culling”?

Culling- Be so badly damaged they don't try to repair it. But I have seen them weld up all the rod journals and main journal and even the thrust faces and rear main seal, all on the same crank. So you can just imagine what shape one is that they cull.
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Re: Forged crank

Post #11 by Wesman07 » Tue May 08, 2018 9:06 pm

Hmm. Is there anyone the produces an aftermarket forged crank for these motors? Like scat?

I’m tempted to order one and have it checked. I’m curious if I will get the same thing as Gramps. It’s worth the shipping to find out.
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86 f150 300 efi with advanced stock cam. Np435, Dana 60/ 10.25, 35" BFG's, four link front suspension with 12" travel fox coil overs, custom deaver leaf pack in the rear.

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Re: Forged crank

Post #12 by CNC-Dude » Tue May 08, 2018 9:52 pm

No aftermarket cranks for the Ford 240/300 as a stocking item, only custom, but many will be glad to make billet ones for you. Many people underestimate the usefulness of a cast crank. There are dozens of guys in Brasil making close to 1000 HP with 30 lbs of boost using the stock Chevy 292 cast cranks with great success and very little failure. Quite a few are making 800 HP with the cast 250 cranks with no problems. We made nearly 650 HP N/A with our cast 292 cranks in H/MP, but they only lasted (20) 1/4 mile passes, But we truly tortured them with ultra high compression, and over 11,000 RPM starting line launches in a 3200 lb car. Once we moved up to Comp Eliminator and began running our engines in a more sane RPM range, the crank life was extended considerably. So anything short of these scenarios, you'll be fine with a cast crank. We actually broke forged cranks with less passes in H/MP than we did the cast cranks. The point being is that a cast crank will serve you well. The Ford 300 crank is even better than our Chevy 292 cranks because our cranks have more stroke than the 300 crank which makes them more flimsy and harmonic prone due to less journal overlap compared to the Ford 300's.
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Re: Forged crank

Post #13 by Wesman07 » Tue May 08, 2018 10:34 pm

That is very useful information. I would assume the launches are the hardest on a crank.

Do you think a cast crank would support 4-500 lb/tq and 300 hp for 200,000 miles?
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86 f150 300 efi with advanced stock cam. Np435, Dana 60/ 10.25, 35" BFG's, four link front suspension with 12" travel fox coil overs, custom deaver leaf pack in the rear.

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Re: Forged crank

Post #14 by CNC-Dude » Wed May 09, 2018 5:24 am

The launches are brutal on them, but the cranks worst enemy is operating the engine at or near the RPM's where harmonic frequencies are at their worse. It really has nothing to do with HP or torque. But if you will break a cast crank with your combo, you'll also break a forged crank as well with the same combo. A forged crank in one of these long stroke 6 cylinders doesn't really give you the same insurance as it does in a V8 engine.
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Re: Forged crank

Post #15 by Wesman07 » Wed May 09, 2018 1:12 pm

Thank you CNC dude for this information. I know it has been posted on here before, but I guess I never paid attention to it until now.

From what I can find, harmonics won’t hit a dangerous level on these motors until you push above 5,000 rpm. You could push this back by shortening the stroke and or lessen the severity of these harmonic by lightening the crankshaft.

Is this correct?
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86 f150 300 efi with advanced stock cam. Np435, Dana 60/ 10.25, 35" BFG's, four link front suspension with 12" travel fox coil overs, custom deaver leaf pack in the rear.

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Re: Forged crank

Post #16 by CNC-Dude » Wed May 09, 2018 2:07 pm

Yes, there are formulas out there to pinpoint more accurately the different harmonic frequencies based on the stroke, but yes, lightening the crank and staying away from the rpms where these harmonic frequencies occur will help. I have removed between 11 and 12 pounds from the Chevy 292 cast cranks, so that can give you an idea of the potential that you can get off of the 300 cast crank.
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