Re: Aluminum rods in stroker 400 block
[Re: lancer493]
#2113624
07/19/16 10:04 PM
07/19/16 10:04 PM
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Joined: Oct 2007
Posts: 4,211 New York
polyspheric
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master
Joined: Oct 2007
Posts: 4,211
New York
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Both same size/quality bolts? I like aluminum when it's used properly: low RPM X high number of cycles, or high RPM X low number of cycles = safe. High cycles X high RPM = BANG. British bikes used alloy rods for 50 years, Triumph 750 triples went 70,000 miles.
Remember Bill Jenkins' warning: Once you decide how many runs it will make safely (200?), keep records. When you reach that point, take them out. Don't just throw them away, hit them with a big hammer, or you'll go looking for them for that "just one last time" - the one where you drive over the crank.
Boffin Emeritus
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Re: Aluminum rods in stroker 400 block
[Re: polyspheric]
#2113748
07/20/16 12:48 AM
07/20/16 12:48 AM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
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I Live Here
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What about street/strip guys..............miles x passes=..........?
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Aluminum rods in stroker 400 block
[Re: cudadoug]
#2113865
07/20/16 10:33 AM
07/20/16 10:33 AM
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Joined: Jun 2008
Posts: 3,916 usa
lewtot184
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Joined: Jun 2008
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usa
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Curious: What is the weight difference? depends, maybe no weight difference. the alum rods are shock absorbers.
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Re: Aluminum rods in stroker 400 block
[Re: lancer493]
#2114086
07/20/16 03:02 PM
07/20/16 03:02 PM
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Joined: Apr 2006
Posts: 4,220 West Plains, MO
DrCharles
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Posts: 4,220
West Plains, MO
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BME's website has some interesting discussion about using aluminum rods on the street: http://www.bmeltd.com/rods.htmThey claim "a couple hundred thousand miles" on a street engine, but emphasize that oil temp is critical: Engines with BME Aluminum Rods must not be run at high load or high rpm until oil temperature reaches at least 130 deg. F. Lastly, while Red Line and Driven oils lubricate reliably at oil temperatures up to 300 deg. F, the recommended oil temperature for an engine using BME Rods is 160-200? F." Anyhow, I've never run them (although the 11 hp V-4 pony motor in my '53 John Deere diesel has aluminum rods for 6000 rpm use)... just quoting from the manufacturer's site.
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Re: Aluminum rods in stroker 400 block
[Re: lancer493]
#2114113
07/20/16 03:38 PM
07/20/16 03:38 PM
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Joined: Jan 2003
Posts: 19,384 Las Vegas
Al_Alguire
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I Live Here
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I built a 451 that I personally put 202 passes and 3500 street miles on and the next owner has continued to drive it with no issues. Last time I talked to him he had put another 6500 miles on it. Motor went 10.50's in a 3570lb car when I had it.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Aluminum rods in stroker 400 block
[Re: lancer493]
#2114344
07/20/16 09:11 PM
07/20/16 09:11 PM
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Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
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Sorry,I forgot to mention it is a race only engine.The steel Source rods weigh 745g. and aluminum BME rods weigh 715g. It's correct that I am mostly looking for the shock absorber effect. I will soon be 63, so Icant wait out this aftermarket block thing any longer. I have to work with what is reasonably obtainable.My other biggest concern is if there is enough room in the confines of this low-deck stroker for the larger dimensions of the 6.76, std.Mopar journal aluminum rods.Its a 4.15 stroke.I was hoping someone here may have done this before. One person asked what intake and rockers will be used. A supervictor intake, and Hughes cryo-treated 1.5 ratio rockers. Thanks all,as all replies are greatly appreciated. Bill On my engine with steel rods, only clearance needed was a small bit off the oil pump pickup boss, so even if the aluminum rod ends are a bit larger, it should fit with minor clearancing? There is no low deck Edelbrock super victor intake manifold, just RB block. I used the INDY 400-2 (4150 flange) but the engine could use more than a 1,000 cfm carb. I also had to deep port match the intake. Not sure what valve springs or cam you are using, but contact Hughes to make sure their rockers will work on the Max Wedge heads. it was my impression the Intake offset of the Hughes rockers was for the standard port heads? If you plan to use stiff roller valve springs and more than 0.700" valve lift, you may want to contact T&D or Jesel.
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Re: Aluminum rods in stroker 400 block
[Re: DrCharles]
#2114451
07/20/16 11:51 PM
07/20/16 11:51 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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BME's website has some interesting discussion about using aluminum rods on the street: http://www.bmeltd.com/rods.htmThey claim "a couple hundred thousand miles" on a street engine, but emphasize that oil temp is critical: Engines with BME Aluminum Rods must not be run at high load or high rpm until oil temperature reaches at least 130 deg. F. Lastly, while Red Line and Driven oils lubricate reliably at oil temperatures up to 300 deg. F, the recommended oil temperature for an engine using BME Rods is 160-200? F." Anyhow, I've never run them (although the 11 hp V-4 pony motor in my '53 John Deere diesel has aluminum rods for 6000 rpm use)... just quoting from the manufacturer's site. Good info thankxxx and I always get to at least 150-160 before I even drive it slightly aggressively............
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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