Re: Budget Engine Build Stories
[Re: moparx]
#2659058
05/25/19 12:16 PM
05/25/19 12:16 PM
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Joined: Mar 2011
Posts: 3,076 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,076
Michigan
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Unless the crank has gone through balancing with aftermarket parts being used - the factory balance job is fine.
The plants ran all the rods and pistons as is - the supplier was supposed to keep them between a min/max spec for weight.
The cranks were all balanced after grinding using the factory bob weight specs. Then they went to assembly.
My suggestion is look the crank over real good and see if it has what appears to be drilling’s that look unusual to the crank - real clean/shiny metal compared to surrounding metal, etc. if not then put it together.
I believe the older service manual should show puston, pin and rod weights so you can check your internals yourself with a gram scale.
Unless you are spinning it to the moon you will be good.
Last edited by Transman; 05/25/19 12:19 PM.
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Re: Budget Engine Build Stories
[Re: A727Tflite]
#2659071
05/25/19 01:01 PM
05/25/19 01:01 PM
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Joined: Aug 2006
Posts: 2,505 God's Country Maryland
GODSCOUNTRY340
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master
Joined: Aug 2006
Posts: 2,505
God's Country Maryland
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If you ever check weights on a scale you'd be surprised how far off the factory weights are. Pistons are usually pretty close to being the same but I've found connecting rods are all over the place. Put your connecting rods on a scale one at a time and see for yourself.
I love the smell of Deer guts in the morning, it smells like... VICTORY!
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Re: Budget Engine Build Stories
[Re: GODSCOUNTRY340]
#2659111
05/25/19 02:56 PM
05/25/19 02:56 PM
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Joined: Apr 2008
Posts: 1,285 Pacific NW USA
CompSyn
OP
pro stock
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OP
pro stock
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
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That's what I was thinking. I don't think it will be that critical for what I'm doing. Rarely if ever will it see much past 5,500. I do have ARP rod bolts on hand that I'm thinking about having installed when I get the rods done.
My next question has to do with the headwork. What would be the bare minimum for this? My stock 906s have the high performance "Magnum" valve springs. Do you think those will suffice? The engine will have stock type cam. Also, the original valves? Can 50-year-old valves live to see another day in this type of application?
Also, forgot to mention, this is on an engine with 98,000 miles, which I'm inclined to believe is accurate.
Last edited by CompSyn; 05/25/19 02:59 PM.
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Re: Budget Engine Build Stories
[Re: CompSyn]
#2659134
05/25/19 06:01 PM
05/25/19 06:01 PM
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Joined: May 2003
Posts: 6,562 Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
Joined: May 2003
Posts: 6,562
Downtown Roebuck Ont
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That's what I was thinking. I don't think it will be that critical for what I'm doing. Rarely if ever will it see much past 5,500. I do have ARP rod bolts on hand that I'm thinking about having installed when I get the rods done.
My next question has to do with the headwork. What would be the bare minimum for this? My stock 906s have the high performance "Magnum" valve springs. Do you think those will suffice? The engine will have stock type cam. Also, the original valves? Can 50-year-old valves live to see another day in this type of application?
Also, forgot to mention, this is on an engine with 98,000 miles, which I'm inclined to believe is accurate.
Is this going to be a hone the stock bore and rering the original pistons kind of build to get the car self propelled? The 906 head doesn't have hardened seats but if the valves don't rattle around in the guide, haven't receded into the ports and aren't burnt/leaking badly, you might get away with a blister stick and some lapping compound to seal them up. If everything is beat, I would at the very least find some 452's with hardened seats to start with for the bucks down approach but if the plan was to build them properly it would be Stealths all the way for the stock look or Procomp types if you don't care about the appearance. Kevin
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Re: Budget Engine Build Stories
[Re: dvw]
#2659621
05/27/19 12:45 PM
05/27/19 12:45 PM
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Joined: Dec 2013
Posts: 4,673 Wichita
GY3
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master
Joined: Dec 2013
Posts: 4,673
Wichita
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Summit has a nice ring and bearing rebuild kit. We've done this on a couple of engines over the years and they ran great. As long as it isn't wore out and is a good core.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: Budget Engine Build Stories
[Re: GY3]
#2659989
05/28/19 12:57 PM
05/28/19 12:57 PM
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Joined: Apr 2008
Posts: 1,285 Pacific NW USA
CompSyn
OP
pro stock
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OP
pro stock
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
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Well, my budget build was almost dashed when one of the pistons slipped through my hands, fell two feet on to concrete and busted a piece of the skirt off. NOOOOOOO!!! The good news is that the knuckle heads at AMS Obsolete happened to have a NOS one of the same exact part number on the shelf. I got it coming. Hope it works out. Fingers crossed. No more costly mistakes...
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Re: Budget Engine Build Stories
[Re: CompSyn]
#2660180
05/28/19 10:18 PM
05/28/19 10:18 PM
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Joined: Feb 2004
Posts: 855 ontario canada kingston
aspenrt360
super stock
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super stock
Joined: Feb 2004
Posts: 855
ontario canada kingston
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Dude! oily fingers? well at least you won't do that again!
2013 Chrysler 300 touring 1974 Dodge Charger SE. 360-727-8.75-3.23 sure grip 1972 Dodge Dart Swinger 1995 Dodge Ram 1500 4x4
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Re: Budget Engine Build Stories
[Re: GY3]
#2661109
06/01/19 07:24 AM
06/01/19 07:24 AM
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Joined: Jul 2003
Posts: 4,769 Holland MI Ottawa
2boltmain
master
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master
Joined: Jul 2003
Posts: 4,769
Holland MI Ottawa
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Summit has a nice ring and bearing rebuild kit. We've done this on a couple of engines over the years and they ran great. As long as it isn't wore out and is a good core. Back in the day this was how to make a nice engine. Start out with a good complete 67 to 71 440 from a car in a farmers field to rebuild but also add the Direct Connection or Crane cam and lifters, Torker intake Holley carb Blackjack headers Trans go shift kit and a young guy had one heck of a quick car.
Keep old mopars alive.
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Re: Budget Engine Build Stories
[Re: 2boltmain]
#2661115
06/01/19 07:57 AM
06/01/19 07:57 AM
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Joined: Jun 2008
Posts: 3,916 usa
lewtot184
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master
Joined: Jun 2008
Posts: 3,916
usa
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I did a 383 for a friend a few years back. this wasn't a budget build, but ended up being a no budget due to unexpected health issues. I took the engine apart and it was absolutely the worst mess I've ever encountered. long story short; bought one of those sealed power engine kits with 2315 pistons, bearings, rings, etc. ball honed the block. gave the guy the heads off one of my cars (906's that were in fairly good shape), got a summit 6400 cam, rebuilt the point distributor, spent many hours cleaning and rebuilding the stock avs. didn't balance anything but I know the pistons are heavy. fired right up, runs nice and smooth
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Re: Budget Engine Build Stories
[Re: lewtot184]
#2662804
06/05/19 08:05 PM
06/05/19 08:05 PM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
master
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master
Joined: Jan 2011
Posts: 4,785
Utah and Alaska
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My budget builds involved a $50 junkyard motor and a can of paint. I used to blow up a motor, head to the junk yard pay the guy $50, go over to his engine shed, point to one, he would load in the truck and I would have it installed the next day with a fresh coat of paint. 5-6 months repeat...if I had low oil pressure, a mix of stp and gear oil went in the engine, I could take a motor from 5-6 psi at idle to 18-30, when it got hot the pressure would still run normal. It worked good except for the smell of the oil.
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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