Author Topic: Re-use rods  (Read 28292 times)

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Offline The Tank

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Re: Re-use rods
« Reply #45 on: December 04, 2012, 03:26:24 pm »

Gienger cam and custom crank





Stock rods with bearing inserts in them. The bearings are for a 1.0 automotive engine. Resized to fit the bearing. Crank journal resized to fit the bearing. These were built before ARC had rods.
The top pic showing the camshaft, is that brass on the cam lobe?
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Offline FlatheadPuller

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Re: Re-use rods
« Reply #46 on: December 04, 2012, 03:32:47 pm »
Its hardweld. Used to weld up the cam lobes. Theres a couple different colors of it. Not brass but not sure exactly what he used.
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Grandville Michigan

Offline NH Mowster

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Re: Re-use rods
« Reply #47 on: December 04, 2012, 04:22:00 pm »
What was the purpose of the automotive type bearings?
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Offline FlatheadPuller

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Re: Re-use rods
« Reply #48 on: December 04, 2012, 06:23:55 pm »
 I was turning my oppy pretty hard and this was the end cure along with proper oil clearance and good oil.
Dennis Bazzett
Grandville Michigan

Offline NH Mowster

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Re: Re-use rods
« Reply #49 on: December 04, 2012, 06:37:48 pm »
But with a good clearance on the stock rods is the automotive type bearing really better?  Did you have to mill the outside of the bearing to fit the rod? I just got my crank done and don't want to send it to a shop because its a flat rate of $80 just to polish the journals, probably more then that to cut it down to fit the bearings.
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Offline FlatheadPuller

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Re: Re-use rods
« Reply #50 on: December 04, 2012, 06:44:46 pm »
Coming from my pulling experience I believe its a better idea then just the rod. Will it make a huge difference in your engine prolly not since your running a stock cam. The bearings were a drop in fit except for turning the crank under size and resizing the big end of the rod to make the bearing fit. The rod journal has to be cut under size .060. I think. Its been awhile since I built it.
Here you go.
Dennis Bazzett
Grandville Michigan

Offline NH Mowster

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Re: Re-use rods
« Reply #51 on: December 04, 2012, 07:01:21 pm »
Oh OK. My engine is splash lube that I'm going to run a 42 crank with 40 rods and a milled piston. I was hoping Don G's opposed 101 DVD would come today but it didn't make it yet. I plan on doing all the oil mods and all the stuff Don says to do. I hoping with all the right oil clearances this thing will stay together for a while. I'm only turning it about 4500rpm and I have a digitrin CHT/RpM tach. I can gear my mower to the track to where it hits the 4500-4800 then I have let off to get into the turn. The 40 cid engine I ran this year was governed to 4000 and I had it geared to hit that and I was keeping up with the ungoverned oppys. This is a pic of my mower without the engine.
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Offline NH Mowster

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Re: Re-use rods
« Reply #52 on: December 04, 2012, 09:24:10 pm »
Have you or anybody tried Teflon coating the piston and/or rods? I know when I ran sprints some years back we built a 377ci with that coating on everything thing and it was the best engine I have personally ever driven.... besides the 410ci  :D another thing would I need to clearance the wrist pin hole on the rod bigger?
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Offline FlatheadPuller

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Re: Re-use rods
« Reply #53 on: December 04, 2012, 10:09:54 pm »
If you use arc rods an dthe short skirt piston the piston skirts are coated last I knew. Wrist pin holes are fine as factory.
Dennis Bazzett
Grandville Michigan

Offline NH Mowster

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Re: Re-use rods
« Reply #54 on: December 05, 2012, 06:47:55 am »
No I'm using stock rods and pistons. I wonder if it would help if it were coated? I may look into it. Thanks again flatheadpuller
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Offline meanmachine

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Re: Re-use rods
« Reply #55 on: December 05, 2012, 07:36:44 am »
beware of the stock rods either machine them for automotive type bearing inserts or buy arc rods, i can tell you i have seized two lower rods on my oppy with the proper clearances,i built my 42 oppy with stock 40 rods and cut the pistons down, just as don explains in his 101 dvd (btw the dvd was made before the arc rod for oppys were out) i would be money ahead if i just would have invested in the arc rod up front  :bash: trust flathead puller he is full of good info 8) just my 2 cents
Sometimes i use my own ideas, even if others think i'm wrong.

Offline NH Mowster

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Re: Re-use rods
« Reply #56 on: December 05, 2012, 09:15:10 am »
Is the use of the automotive type bearing to stop the rod from swelling and tightening  up around thecrank?
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Offline BIG AL 202

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Re: Re-use rods
« Reply #57 on: December 05, 2012, 09:49:13 am »
Have you or anybody tried Teflon coating the piston and/or rods? I know when I ran sprints some years back we built a 377ci with that coating on everything thing and it was the best engine I have personally ever driven.... besides the 410ci  :D another thing would I need to clearance the wrist pin hole on the rod bigger?
YUP! http://www.universalcoating.com/ This is who I use, known him for years. Good folks to work with, If you contact them tell him AL sent you.
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Offline NH Mowster

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Re: Re-use rods
« Reply #58 on: December 05, 2012, 11:32:12 am »
Do you just do the pistons or the rods to?
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Offline NH Mowster

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Re: Re-use rods
« Reply #59 on: December 05, 2012, 12:28:11 pm »
I was checking and the Geo Metro has a 1 L engine. I may pick some up after work and  tinker with it tonight.
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