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Old 11-14-2019, 06:13 PM   #1
CA Victoria
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Default Snyder’s Inserted Rod Size?

Do you have a Snyder’s insert Rod on the shelf?
I would like to know the crank end Bore x width dimensions.

"Tried to get ahold of a spec sheet but one was not available.....

Thank you!
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Old 11-14-2019, 06:39 PM   #2
Kurt in NJ
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Default Re: Snyder’s Inserted Rod Size?

I am interested in the specs too, curious if a stock rod can be bored /side clearanced to fit---
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Old 11-14-2019, 06:57 PM   #3
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Default Re: Snyder’s Inserted Rod Size?

Yes, that’s where I’m heading Kurt.
The advantage of Snyder’s bearings is they have the thrust face built in......
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Old 11-14-2019, 07:26 PM   #4
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Default Re: Snyder’s Inserted Rod Size?

Quote:
Originally Posted by Kurt in NJ View Post
I am interested in the specs too, curious if a stock rod can be bored /side clearanced to fit---
Do not remember the size, but I have done it. Still working as far as I know.
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Old 11-15-2019, 09:47 AM   #5
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Default Re: Snyder’s Inserted Rod Size?

Just went to Snyders, it say's the A-6202 bearing can be fitted to the original con rod, boring it out to 1.624/1.625, and remove all babbitt from thrust face, braze up and finish to a width of 1.580 less .003/.005. My question is why braze to 1.580 when the original width of rod is 1.625?
thanks
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Old 11-15-2019, 10:27 AM   #6
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Default Re: Snyder’s Inserted Rod Size?

Could be, the thrust area of the rod is angled back to hold the babbitt. To get straight sides for the insert you may need to braze and machine to get correct width.
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Old 11-15-2019, 11:19 AM   #7
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Default Re: SnyderÂ’s Inserted Rod Size?

Thanks for the info.
More thoughts:
Using AER or Scat bearings a thrust face must be built up.
Snyder claims their bearings (pictured) have front and rear thrust faces. The 1.580 would not allow enough for the shell. Something doesn't make sense.
So the rod bore is the same as an AER rod. AER bearings are .082 thick. Snyders bearings should be the same thickness and the thrust side should carry the same thickness.
Close as i can tell Fords rods were finished to a 1.615 width
A stock rod with the babbitt removed is about 1.55 wide. Needing about .10 removed to allow for the insert. But this is speculation.

Still hoping for the full connecting rod spec. before i order a set.
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Old 11-15-2019, 12:48 PM   #8
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Default Re: Snyder’s Inserted Rod Size?

Have you considered buying new rods from AER? They don't have the thrust on the sides, but are a much stronger rod, balance weight is evenly matched, and shoulder bolts to alignment cap with the rod. I don't see an advantage to the side thrust.
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Old 11-15-2019, 01:42 PM   #9
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Default Re: Snyder’s Inserted Rod Size?

Albeit not a bad thing AERs rods are machined to produce the thrust. With these bearings the thrust is renewed when the inserts are installed and i have a bunch of stock rods to work with.
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Old 11-15-2019, 07:19 PM   #10
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Default Re: Snyder’s Inserted Rod Size?

I know doing it yourself is fun, but at 90$ each for the rods, how much is your time worth? And yes I fully understand the bragging rights saying you did it yourself. If you have the tools and know how and can find the info you need, go for it. I was told today to do the job it should be bronze welded on the thrust area, faced on both sides equally, bored and honed. Then of course you will need a jig to keep your centers for machining.
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Old 11-16-2019, 07:50 AM   #11
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Default Re: Snyder’s Inserted Rod Size?

Call Snyders and ask them how it all works. Chap
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Old 11-16-2019, 09:14 AM   #12
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Default Re: Snyder’s Inserted Rod Size?

I called Snyder's, they did not know. No technical information so the third person i spoke to did measure a rod but what they gave me was in accurate.
Ok, i’ll give them another chance, I sent a written request for technical info, but in the meanwhile.....

......still looking for someone with a connecting rod in hand.
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Last edited by CA Victoria; 11-16-2019 at 09:37 AM.
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Old 11-16-2019, 06:02 PM   #13
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Default Re: Snyder’s Inserted Rod Size?

I tried googling aer rods and couldn’t find anything. Any suggestions?
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Old 11-16-2019, 06:28 PM   #14
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Default Re: Snyder’s Inserted Rod Size?

http://www.antiqueenginerebuilding.com/rods.htm
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Old 11-16-2019, 07:36 PM   #15
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Default Re: Snyder’s Inserted Rod Size?

Quote:
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Thanks!
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Old 11-17-2019, 12:43 AM   #16
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Default Re: Snyder’s Inserted Rod Size?

Whatever you decide, have the balance of the rods checked by your own local machinist after you get the sizes right, unless you can do it yourself. Do Not Not Not accept anyone's statement or promise on specs or sizes, no matter who they are. This is not a knock on the makers or suppliers, but is just acknowledging that mistakes, mis-readings, and errors occur. Also, items made to general specs may or may not fit your application within specs after 90 years of wear and modifications. IE, does the thrust face fit your bearing and provide the proper clearance. (I have too many stories of errors in the specs of parts supplied, even by reputable machinists/suppliers, and I would guess that others here who actually do double check do too.) You can see the problem by the questions here to the very reasonable questions you asked. Measure everything, twice.
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Old 11-17-2019, 07:28 AM   #17
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Default Re: Snyder’s Inserted Rod Size?

Surprised that Snyder's didn't have an immediate answer for you? Seems like a valid inquiry and you might want to shop around... Chap
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Old 11-17-2019, 08:53 AM   #18
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Default Re: Snyder’s Inserted Rod Size?

There is a lot more to it than just boring out the rod to the insert size. You have to have it in the right location, must be parallel with the wrist pin, rod bolts need to be torqued to the right torque. How are you going to hold it to bore it.
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Old 11-17-2019, 09:22 AM   #19
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Default Re: Snyder’s Inserted Rod Size?

Thank you PC.
The terms matched and balanced are sometimes incorrectly interchanged when talking about connecting rod weight. About half of the rods and caps I have prepped have been modified, to a production rebuilder this equates into time and customer $$ spent to build a matched set before machining can begin. Although I do not have this balance to maintain I am driving toward being able to restore a set of Henry’s connecting rods machined to accept inserted bearings. It would be easy to write a check, the path to working thru the aspects of re engineering and machining the rods is what I enjoy about our Model A hobby.
It has taken 5 years to work thru boring and line honing the block for inserts, I hope to get this done and an engine back in my car before I pass on!!!
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Old 11-17-2019, 01:52 PM   #20
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Default Re: Snyder’s Inserted Rod Size?

I've thought about this process for years. To bore these rod out, I would first sit down at a drafting table and design a fixture. If you look at the original rods you'll see that Ford used 3 points to hold and machine the rods. 2 are on each side of the big end just above the parting line, and are offset, 1 looks like it is .187" above the parting line and the other looks like .250" above the parting line, the 3rd one is above the rist pin bore.
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