anyone running the stock gsr crankshaft with over 400hp?
03-31-2006, 04:33 AM
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anyone running the stock gsr crankshaft with over 400hp?
im debating whether or not i should have my gsr crankshaft micropolished and balanced as a part of my build and was wondering if the stock crankshaft will be ok for 400hp+. any insights will help.
03-31-2006, 04:51 AM
#2
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Re: anyone running the stock gsr crankshaft with over 400hp? (project civic)
Stock will be fine most likely, But I think its a good idea to atleast have it checked for balance. I had Earl balance and micropolish my crank when the block was being sleeved. Its just a piece of mind especially if you are revving the car 9k+ .
The honda crankshafts are very well balanced from the factory so I asssume its possible to throw the balance off if not using a reputable machine.
The honda crankshafts are very well balanced from the factory so I asssume its possible to throw the balance off if not using a reputable machine.
03-31-2006, 05:56 AM
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Re: anyone running the stock gsr crankshaft with over 400hp? (g2turbo)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by g2turbo »</TD></TR><TR><TD CLASS="quote">Stock will be fine most likely, But I think its a good idea to atleast have it checked for balance. I had Earl balance and micropolish my crank when the block was being sleeved. Its just a piece of mind especially if you are revving the car 9k+ .
The honda crankshafts are very well balanced from the factory so I asssume its possible to throw the balance off if not using a reputable machine.</TD></TR></TABLE>
Agreed.
The stock crank is fine. Some will argue not to balance or micropolish it unless there has been damage to it, because they are balanced from the factory. I had mine balanced before I built my engine and I know I'm not the only one.......
The honda crankshafts are very well balanced from the factory so I asssume its possible to throw the balance off if not using a reputable machine.</TD></TR></TABLE>
Agreed.
The stock crank is fine. Some will argue not to balance or micropolish it unless there has been damage to it, because they are balanced from the factory. I had mine balanced before I built my engine and I know I'm not the only one.......
03-31-2006, 09:56 AM
#6
Re: anyone running the stock gsr crankshaft with over 400hp? (project civic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by project civic »</TD></TR><TR><TD CLASS="quote">im debating whether or not i should have my gsr crankshaft micropolished and balanced as a part of my build and was wondering if the stock crankshaft will be ok for 400hp+. any insights will help.</TD></TR></TABLE>
A ton of people run the stock crank with 400+. Lots of people run the stock crank with ALOT more than that too.
A ton of people run the stock crank with 400+. Lots of people run the stock crank with ALOT more than that too.
03-31-2006, 01:18 PM
#7
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Re: anyone running the stock gsr crankshaft with over 400hp? (Dunc)
400-500 without touching the crank will not be a problem. the cranks are balanced realy well from honda so unless your running very high rpm leave it alone.
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04-01-2006, 07:48 AM
#12
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Re: (Dturbocivic)
About 1 out of 25 honda cranks come out perfectly in balance from the factory. Most are slightly off. RPMs below about 7-8000 are ok as is but if running higher than that, the out of balance forces double every 1000 rpm or so. It is really not horsepower that is the issue, but rpms.
BTW, foe user ATEC, you NEVER balance a crank with a flywheel. Honda is an internally balanced engine. Now you cant change clutches without messing up your balance. You must be using a V-8 shop.
BTW, foe user ATEC, you NEVER balance a crank with a flywheel. Honda is an internally balanced engine. Now you cant change clutches without messing up your balance. You must be using a V-8 shop.
04-01-2006, 02:54 PM
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Re: (earl)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by earl »</TD></TR><TR><TD CLASS="quote">About 1 out of 25 honda cranks come out perfectly in balance from the factory. Most are slightly off. RPMs below about 7-8000 are ok as is but if running higher than that, the out of balance forces double every 1000 rpm or so. It is really not horsepower that is the issue, but rpms.
BTW, foe user ATEC, you NEVER balance a crank with a flywheel. Honda is an internally balanced engine. Now you cant change clutches without messing up your balance. You must be using a V-8 shop.</TD></TR></TABLE>
OK I couldn't let this one go.......
Yes we are a mostly a V-8 shop but i do have a couple hundred hondas under my belt.
It doesn't matter if i build a 1500hp V-8 all motor on alcohol or a 900hp H23 or the winner of last years import battle at Pac Racways in the street division, THEY ALL HAVE A CRANK, PISTONS, AND RODS.
and yes i always balance the flywheel with the crank after the crank is brought to zero.
BTW, foe user ATEC, you NEVER balance a crank with a flywheel. Honda is an internally balanced engine. Now you cant change clutches without messing up your balance. You must be using a V-8 shop.</TD></TR></TABLE>
OK I couldn't let this one go.......
Yes we are a mostly a V-8 shop but i do have a couple hundred hondas under my belt.
It doesn't matter if i build a 1500hp V-8 all motor on alcohol or a 900hp H23 or the winner of last years import battle at Pac Racways in the street division, THEY ALL HAVE A CRANK, PISTONS, AND RODS.
and yes i always balance the flywheel with the crank after the crank is brought to zero.
04-01-2006, 04:20 PM
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Re: (Dturbocivic)
once the crank is perfectly balanced, it is used as a fixture to mount the flywheel and spun again. say the flywheel is 10grams off, you can then drill it to bring it to zero and then start again with the pressure plate. now the crank is zero, the flywheel is zero and the pressure plate is zero. you can then change them to any motor knowing they are all in balance.
i have a b-series crank with a hammered rod brg that is balanced. i use that all the time to mount flywheels and pressure plates if the customer wants those balanced alone.
i have a b-series crank with a hammered rod brg that is balanced. i use that all the time to mount flywheels and pressure plates if the customer wants those balanced alone.
04-01-2006, 05:43 PM
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Re: (Bud's Machine)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bud’s Machine »</TD></TR><TR><TD CLASS="quote">OK I couldn't let this one go.......
Yes we are a mostly a V-8 shop but i do have a couple hundred hondas under my belt.
It doesn't matter if i build a 1500hp V-8 all motor on alcohol or a 900hp H23 or the winner of last years import battle at Pac Racways in the street division, THEY ALL HAVE A CRANK, PISTONS, AND RODS.
and yes i always balance the flywheel with the crank after the crank is brought to zero.</TD></TR></TABLE>
...And I'm one of them
Whoa, Bud's machine is online now? On Honda-Tech?! Is this Bud himself or another employee?
Im on a stock crank blananced w/Flywheel and clutch and micropolished as well (By Bud) 410whp here and no problems!
-Nick
Yes we are a mostly a V-8 shop but i do have a couple hundred hondas under my belt.
It doesn't matter if i build a 1500hp V-8 all motor on alcohol or a 900hp H23 or the winner of last years import battle at Pac Racways in the street division, THEY ALL HAVE A CRANK, PISTONS, AND RODS.
and yes i always balance the flywheel with the crank after the crank is brought to zero.</TD></TR></TABLE>
...And I'm one of them
Whoa, Bud's machine is online now? On Honda-Tech?! Is this Bud himself or another employee?
Im on a stock crank blananced w/Flywheel and clutch and micropolished as well (By Bud) 410whp here and no problems!
-Nick
04-01-2006, 08:33 PM
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Re: anyone running the stock gsr crankshaft with over 400hp? (project civic)
ok thanks guys but what i was leaning towards was whether or not the stock crank should be balanced/micropolished with over 400whp.
04-01-2006, 09:13 PM
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Re: anyone running the stock gsr crankshaft with over 400hp? (project civic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by project civic »</TD></TR><TR><TD CLASS="quote">ok thanks guys but what i was leaning towards was whether or not the stock crank should be balanced/micropolished with over 400whp.</TD></TR></TABLE>
Yes for over 400whp you should consider balancing the rotating assembly.
Yes for over 400whp you should consider balancing the rotating assembly.
04-01-2006, 11:59 PM
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Re: (atec)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by atec »</TD></TR><TR><TD CLASS="quote">My ITR crank is now beeing micropolished and dynamic balanced.
with the flyweel/clutch and crankweel.
Just to be safe.
</TD></TR></TABLE>
by "weel" you mean wheel and by "crankweel" you mean crank pulley ??
you should think about rejetting the carb if your running a hot cam ...then taste the oil and see if its running rich
with the flyweel/clutch and crankweel.
Just to be safe.
</TD></TR></TABLE>by "weel" you mean wheel and by "crankweel" you mean crank pulley ??
you should think about rejetting the carb if your running a hot cam ...then taste the oil and see if its running rich
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