Thread: Is an engine rebalance needed? Need help!

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  1. #1 Is an engine rebalance needed? Need help! 
    SE Level Member lamus04's Avatar
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    Just put my high comp. build together this summer. Had the crank balanced for the stock flexplate and had to add 52 grams of malory. I'm doing a six speed conversion using the stock 3800 camaro flywheel. Do I have to rebalance the crank agian for the flywheel?
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  2. #2 Re: Is an engine rebalance needed? Need help! 
    GXP Level Member darkhorizon's Avatar
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    Have the flywheel balanced to the spec of the flexplate you had your rotating assembly balanced to.

    Also, I am not 100% sure about this, but you should not be balancing the crank seperate of pistons/rods, the crank itself should be neutral balanced.
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  3. #3 Re: Is an engine rebalance needed? Need help! 
    SE Level Member lamus04's Avatar
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    Yeah thats what I meant, it was a balanced rotating assembly. I'm just dreading to tear the engine apart agian, maybe it'll give me a chance to try out ZZP's upcoming forged conn. rods.
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  4. #4 Re: Is an engine rebalance needed? Need help! 
    GXP Level Member darkhorizon's Avatar
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    So if there is a neutral balance on the crank/rods/pistons, then you need to have a neutral balance flywheel and dampner pulley....
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  5. #5 Re: Is an engine rebalance needed? Need help! 
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    which is a meziere flex and powerbond balancer.

    And not the ones ZZP sells.
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  6. #6 Re: Is an engine rebalance needed? Need help! 
    SE Level Member lamus04's Avatar
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    Well looks like the motor is coming apart agian for yet another inspection, just hoping the zzp will release the conn. rods soon so i can hae the car ready for the summer.
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  7. #7 Re: Is an engine rebalance needed? Need help! 
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    Tell me about it I am waiting on these rods so I can do my T72 turbo build motor!!!
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  8. #8 Re: Is an engine rebalance needed? Need help! 
    GT Level Member RegalGS98s's Avatar
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    Are the H-Beam connecting Rods ZZP's coming out with supposed to be any stronger or cheaper than the H-Beams already available?
    SMGPFC #0330 - 3.25, Intercooled, Custom Tune, 1.84rr, LS6 Springs, roller timing chain, SLP Headers, Borla Exhaust, built Trans, B&M Trans Cooler, home cut poly uppers, gapless rings, N* TB, Ported heads.
    Soontocome: CAM?, Custom modified M112, home poured Poly Engine and Trans mounts
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  9. #9 Re: Is an engine rebalance needed? Need help! 
    GXP Level Member darkhorizon's Avatar
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    hbeams already available? Wut?

    Also... Nobody has ever made enough power to break stock rods, idk why everyone cares about building super crazy motors when they will never need them.
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  10. #10 Re: Is an engine rebalance needed? Need help! 
    I live here. MoarkatsINmuhtrailer's Avatar
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    yeahh, for my build im just using the stock l67 rods
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  11. #11 Re: Is an engine rebalance needed? Need help! 
    GT Level Member RegalGS98s's Avatar
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    Quote Originally Posted by darkhorizon View Post
    hbeams already available? Wut? Also... Nobody has ever made enough power to break stock rods, idk why everyone cares about building super crazy motors when they will never need them.
    Yeah, Matt on here put up a similar link before. They're not exactly cheap though: eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices I saw some though for my Honda F22B1. They're about $250 which is about 25% of the Holdens V6 3.8L price, but I don't know their quality. HONDA 2.2L F22A1-6 ACCORD SOHC H BEAM ROD 5.588" a set of 4 with ARP8740 BOLTS | eBay I assume they're cheaper cause there's a larger market for them. I've spun a bearing on the Honda in just normal driving. I've seen 2 other Honda engines that you can hear the connecting rods.
    Last edited by RegalGS98s; 02-07-2012 at 07:18 AM.
    SMGPFC #0330 - 3.25, Intercooled, Custom Tune, 1.84rr, LS6 Springs, roller timing chain, SLP Headers, Borla Exhaust, built Trans, B&M Trans Cooler, home cut poly uppers, gapless rings, N* TB, Ported heads.
    Soontocome: CAM?, Custom modified M112, home poured Poly Engine and Trans mounts
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  12. #12 Re: Is an engine rebalance needed? Need help! 
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    swan racing?
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  13. #13 Re: Is an engine rebalance needed? Need help! 
    GT Level Member RegalGS98s's Avatar
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    Quote Originally Posted by matt5112 View Post
    swan racing?
    Not sure if you're referring to the links I provided, but I'm sure there's an ebay seller out with that name, lol. I just looked at the Holden rods page again. I forgot, towards the bottom of the listing they offer titanium instead of 4340 Chrome Moly. Who knows what they want for those.
    SMGPFC #0330 - 3.25, Intercooled, Custom Tune, 1.84rr, LS6 Springs, roller timing chain, SLP Headers, Borla Exhaust, built Trans, B&M Trans Cooler, home cut poly uppers, gapless rings, N* TB, Ported heads.
    Soontocome: CAM?, Custom modified M112, home poured Poly Engine and Trans mounts
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  14. #14 Re: Is an engine rebalance needed? Need help! 
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