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bigcountrykustoms 
Bronze Level
Joined: 20 Apr 2016
Location: clark Co. Il.
Points: 19
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 Topic: Rod and piston combination
Posted: 11 Jun 2016 at 8:47am |
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I've got a late d-17 block with 4.5 inch bore and 5 inch stroke. If you've got the same displacement what did you do for a rod and piston combination? I'm in desperate need of knowing so I can let hapco know what I'm using before he welds my crank. Thanks much for any insights
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mike a
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Joined: 12 Dec 2009
Location: MN
Points: 165
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Posted: 11 Jun 2016 at 11:22am |
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hope marty chimes in on this one
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dawntreader74
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Joined: 28 Oct 2013
Location: Manteno
Points: 1770
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Posted: 11 Jun 2016 at 12:56pm |
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i used a 427'GM piston' W\ ac 190 XT rods bearing over bearing on crank' runs strong put together 8 years ago'
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patrickmull
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Joined: 11 Jan 2011
Location: Casey IL
Points: 893
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Posted: 11 Jun 2016 at 5:13pm |
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do you have 5" or 6" stroke i thought fred's old engine was 6" if your going 5" i used d19 rods
Edited by patrickmull - 11 Jun 2016 at 5:15pm
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dawntreader74
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Joined: 28 Oct 2013
Location: Manteno
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Posted: 11 Jun 2016 at 11:23pm |
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the d19's will work on 6'' crank' like pat' said
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wi50
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Joined: 24 Sep 2010
Location: weegieland
Points: 1010
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Posted: 13 Jun 2016 at 12:09am |
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So if hapco is welding the crank, it's the same amount of work to do it weather the stroke length is 5" or something else. But I've used billet rods I have a friend make, farmall h&350 rods and Chrysler rods. If I were doing it and not wanting to spend money on billets, I would use the Chrysler rods.
The buda rods people like to use are just plain short and would require a tall odd piston, and to short for a decent rod to stroke ratio in a longer stroke engine. They are great in some situations depending on what other parts you're trying to use but for this they wouldn't be a first choice.
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"see what happens when you have no practical experience doing something...... you end up playing with calculators and looking stupid on the internet"
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wi50
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Joined: 24 Sep 2010
Location: weegieland
Points: 1010
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Posted: 13 Jun 2016 at 12:12am |
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Depending on the rod used, it's also nice to lay the crank and cam out and mark & measure so the journals get positioned between the cam lobes if the rod is going to be wide enough to interfere with the cam lobes.
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"see what happens when you have no practical experience doing something...... you end up playing with calculators and looking stupid on the internet"
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PaulB
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Joined: 12 Sep 2009
Location: Rocky Ridge Md
Points: 4753
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Posted: 13 Jun 2016 at 10:15am |
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What Chrysler rods would someone be looking for? I should have some 440 6pack rods somewhere.
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If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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Robacpuller
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Joined: 07 Apr 2016
Location: Wisconsin
Points: 248
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Posted: 13 Jun 2016 at 8:52pm |
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I used lnternational 350 rods, 6 inch stroke, 4.600 bore, big block Chevy piston 1.24 piston height. Merfeld did my cranke, he narrowed the rods. 9 years ago and still no problems. But I only run about 1800 rpms to 2000.
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wi50
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Joined: 24 Sep 2010
Location: weegieland
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Posted: 14 Jun 2016 at 9:41am |
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I've got a bunch of the rods around and vintage power wagon is an outfit that sells chrystler parts and has them on hand, 218,230,237,251 engines used connecting rods that used a 2.062" crankpin diameter and they were 7 13/16, 7 7/8, 7 15/15 and 8" lengths available. There's left and right offset rods as they have a slight offset of the beam to bearing bore. The wrist pin end is small, easy to hone to a .927" pin bore or I bore them in the mill with a reamer to get a .990" pin size. The rod bolts are 3/8" and easy to use an ARP bolt from a BBC application.
Depending on your block these rods will clear fairly well. Lots of common automotive pistons available and with these rod lengths it's easy to come up with a combination of cheap and available parts.
Edited by wi50 - 14 Jun 2016 at 9:44am
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"see what happens when you have no practical experience doing something...... you end up playing with calculators and looking stupid on the internet"
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Larry(OH)
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Joined: 11 Sep 2009
Location: Shreve Ohio
Points: 1577
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Posted: 14 Jun 2016 at 1:57pm |
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I take it those are the old flat head engines? Just found a stash of them a guy is selling off:) One says Turbofire )i think it was) on the head
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'40 WC puller,'50 WD puller,'50 M puller '65 770 Ollie
*ALLIS EXPRESS contact*
I can explain it to you, BUT I cannot understand it for you!!
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