Re: Mopar RB 572 1000 HP Project 1970 Cuda
[Re: Raffaplymouth60]
#2406960
11/21/17 06:58 PM
11/21/17 06:58 PM
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Raffaplymouth60
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what do you think of aluminium rod on street use some time ??
1970 Cuda 496 street driven 9.22@150 1971 Demon 572 7.82@176 1957 Desoto Adventurer Convertible 345 Hemi 1958 Plymouth Fury Christine 2008 Dodge Ram 1500 Hemi 1970 Dodge ChallengerRT 6pack 4 speed 1 of 135 1968 Dodge Charger RT 4 speed
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Re: Mopar RB 572 1000 HP Project 1970 Cuda
[Re: Raffaplymouth60]
#2406965
11/21/17 07:09 PM
11/21/17 07:09 PM
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sgcuda
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Aluminum rods these days are a much better quality than they used to be. Check with manufacturer as far as life expectancy, but I'm sure that they won't need replacing anytime too soon.
[image][/image]
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Re: Mopar RB 572 1000 HP Project 1970 Cuda
[Re: Raffaplymouth60]
#2407040
11/21/17 09:44 PM
11/21/17 09:44 PM
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polyspheric
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I'm guessing that acceleration is the only goal? Because that pan (and almost any pan not specifically built for it) has very poor roll (lean to one side) and yaw ("fishtail") oil control. All the baffles, pickups, door etc. are designed to control oil motion in pitch ("hobby horse", wheelie) only. This is the time to decide of you're going to road race it...
Boffin Emeritus
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Re: Mopar RB 572 1000 HP Project 1970 Cuda
[Re: Streetwize]
#2407211
11/22/17 03:22 AM
11/22/17 03:22 AM
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Raffaplymouth60
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Test fit everything carefully. The cam to rod clearance could be an issue with a 4.5" stroke and Aluminum rods. Is that a raised cam core block? i will try this tomorrow! this issue also in 4.5 stroke with World block ?? or only in stock block ?? this is 4.5 bore Mopar World Block
Last edited by Raffaplymouth60; 11/22/17 03:23 AM.
1970 Cuda 496 street driven 9.22@150 1971 Demon 572 7.82@176 1957 Desoto Adventurer Convertible 345 Hemi 1958 Plymouth Fury Christine 2008 Dodge Ram 1500 Hemi 1970 Dodge ChallengerRT 6pack 4 speed 1 of 135 1968 Dodge Charger RT 4 speed
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Re: Mopar RB 572 1000 HP Project 1970 Cuda
[Re: Raffaplymouth60]
#2407232
11/22/17 07:46 AM
11/22/17 07:46 AM
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Bigcube
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what do you think of aluminium rod on street use some time ?? Nothing wrong with aluminum rods on the street. Use a little tighter bearing clearance to allow for expansion and keep it cool. If the motor runs hot on the street, the oil pressure at idle will suffer and you could knock the rod bearings out of it. Looks like a bunch of good parts. I would run a bigger pan, big motors will hold a bunch of oil in them at higher RPM. I ran a 12 qt pan. Good luck with the project!
Jim
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Re: Mopar RB 572 1000 HP Project 1970 Cuda
[Re: Raffaplymouth60]
#2407233
11/22/17 07:50 AM
11/22/17 07:50 AM
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Bigcube
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One thing to add, to go along with the tighter rod clearance. Let the motor get up to temp before you drive. It's all about running the motor in the proper temperature range.
Jim
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Re: Mopar RB 572 1000 HP Project 1970 Cuda
[Re: Raffaplymouth60]
#2407244
11/22/17 09:34 AM
11/22/17 09:34 AM
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Joined: Jan 2003
Posts: 10,090 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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I had a gasket failure using that green gasket and oil pump filter plate! This was a common problem with that setup. There are only two bolts holding it on the pump and they are on one side. You can buy a one piece plate, or add a third bolt under the filter area. Best thing to do is to buy the one piece cover. Also do what you can to elimenate 90 degree fittings, especially on the intake side of the pump. Use the better 90 degree fittings made with tubing and a gentle curve if at all possible. Also very important to see if any of the fittings screw into anything far enough to restrict oil flow. I found that the one going through the pan into the swinging oil pickup was restricting the flow path on mine. Just shorten it and taper the entrance of the fitting. keep a very close eye on oil pressure . If you have problems with low pressure because of the oil pan you have, you can band aid it with an oil accumulater. I have to run over ten quarts of oil. I use thirteen with the accumulater.
Last edited by gregsdart; 11/22/17 09:44 AM.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Mopar RB 572 1000 HP Project 1970 Cuda
[Re: gregsdart]
#2407988
11/23/17 08:09 PM
11/23/17 08:09 PM
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Raffaplymouth60
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I had a gasket failure using that green gasket and oil pump filter plate! This was a common problem with that setup. There are only two bolts holding it on the pump and they are on one side. You can buy a one piece plate, or add a third bolt under the filter area. Best thing to do is to buy the one piece cover. Also do what you can to elimenate 90 degree fittings, especially on the intake side of the pump. Use the better 90 degree fittings made with tubing and a gentle curve if at all possible. Also very important to see if any of the fittings screw into anything far enough to restrict oil flow. I found that the one going through the pan into the swinging oil pickup was restricting the flow path on mine. Just shorten it and taper the entrance of the fitting. keep a very close eye on oil pressure . If you have problems with low pressure because of the oil pan you have, you can band aid it with an oil accumulater. I have to run over ten quarts of oil. I use thirteen with the accumulater. Thank you very much for this info , i will check everything on oiling
1970 Cuda 496 street driven 9.22@150 1971 Demon 572 7.82@176 1957 Desoto Adventurer Convertible 345 Hemi 1958 Plymouth Fury Christine 2008 Dodge Ram 1500 Hemi 1970 Dodge ChallengerRT 6pack 4 speed 1 of 135 1968 Dodge Charger RT 4 speed
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Re: Mopar RB 572 1000 HP Project 1970 Cuda
[Re: dvw]
#2407989
11/23/17 08:10 PM
11/23/17 08:10 PM
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Raffaplymouth60
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I ran BME 426 forgings in my Mega Block with 4.5" stroke, only slight clearancing. Similar to Al's pics above. Former owner ran a 292@.050", I run a 285"@.050" both fit w/o issue. Doug wow , i will send my cam info Tomorrow !!
1970 Cuda 496 street driven 9.22@150 1971 Demon 572 7.82@176 1957 Desoto Adventurer Convertible 345 Hemi 1958 Plymouth Fury Christine 2008 Dodge Ram 1500 Hemi 1970 Dodge ChallengerRT 6pack 4 speed 1 of 135 1968 Dodge Charger RT 4 speed
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Re: Mopar RB 572 1000 HP Project 1970 Cuda
[Re: FastmOp]
#2407991
11/23/17 08:13 PM
11/23/17 08:13 PM
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Raffaplymouth60
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It's something to check. 1mm clearance is minimum. Check the cam clearance to rods, cam end play, and don't forget to set the cam end play to .008 or so, give or take a .002 That's thousandths of an Inch.
There is a lot to check on a motor like your building. I have a similar motor. Ask as many questions as you want. These guys all want to help. We ruffle each others feathers but it's mostly in fun. We all drive MoPar! Thank you very much ! , now i have this questions ; in my old 496 i had used Total seal max seal zero gap rings .. no problem for several pass , i this engine i have JE pro seal gap rings , is good ? or is better zero gap rings ?? i will use 300-350 HP nitrous on this engine
1970 Cuda 496 street driven 9.22@150 1971 Demon 572 7.82@176 1957 Desoto Adventurer Convertible 345 Hemi 1958 Plymouth Fury Christine 2008 Dodge Ram 1500 Hemi 1970 Dodge ChallengerRT 6pack 4 speed 1 of 135 1968 Dodge Charger RT 4 speed
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Re: Mopar RB 572 1000 HP Project 1970 Cuda
[Re: Oyvind Mopar]
#2407995
11/23/17 08:16 PM
11/23/17 08:16 PM
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Raffaplymouth60
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With the thick aluminum rods you should check clearance against the camlobes. I am bulding a Hemi with Mopar rods in a Megablock, and 4.625 stroke, and had to slightly grind on the driver side rods (Eagle steel) in most advanced cam postion to make sure a thick lobed roller cam did not interfere. Less problem with a flat tappet I also mocked up. Interference point is on the rods where the threads exit. That is also a stressed part, so I do not know how much you can grind away if needed.....I highly recommend you check this first, to see if the alu rods will fit. OK i will check all rod , for now i have checked only cyl 1 rod and look like a good gap from rod to cam lobe , tomorrow i will check all rods .. Thanks !
1970 Cuda 496 street driven 9.22@150 1971 Demon 572 7.82@176 1957 Desoto Adventurer Convertible 345 Hemi 1958 Plymouth Fury Christine 2008 Dodge Ram 1500 Hemi 1970 Dodge ChallengerRT 6pack 4 speed 1 of 135 1968 Dodge Charger RT 4 speed
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Re: Mopar RB 572 1000 HP Project 1970 Cuda
[Re: Bigcube]
#2407996
11/23/17 08:18 PM
11/23/17 08:18 PM
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Raffaplymouth60
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One thing to add, to go along with the tighter rod clearance. Let the motor get up to temp before you drive. It's all about running the motor in the proper temperature range. ok ! good info .. right temperature ?? 190-200 F maximum ??
1970 Cuda 496 street driven 9.22@150 1971 Demon 572 7.82@176 1957 Desoto Adventurer Convertible 345 Hemi 1958 Plymouth Fury Christine 2008 Dodge Ram 1500 Hemi 1970 Dodge ChallengerRT 6pack 4 speed 1 of 135 1968 Dodge Charger RT 4 speed
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Re: Mopar RB 572 1000 HP Project 1970 Cuda
[Re: Raffaplymouth60]
#2408030
11/23/17 09:44 PM
11/23/17 09:44 PM
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Bigcube
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One thing to add, to go along with the tighter rod clearance. Let the motor get up to temp before you drive. It's all about running the motor in the proper temperature range. ok ! good info .. right temperature ?? 190-200 F maximum ?? 160-180ish deg is what I consider normal range. 190+ is too hot. I had over 100 lbs pressure at idle cold, under 20 lbs at idle at 210ish degrees and 30+ lbs of pressure at idle if temp was in the 180ish range. With a big pump the pressure will climb quickly with RPM even when hot, but I never like to see it under 20 lbs when its running.
Jim
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Re: Mopar RB 572 1000 HP Project 1970 Cuda
[Re: Raffaplymouth60]
#2408075
11/24/17 12:05 AM
11/24/17 12:05 AM
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Cab_Burge
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Last edited by Cab_Burge; 11/24/17 12:05 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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