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Forum: General Q & A

11-15-2007, 09:31 AM

Replies: 20

500 hp Valve Spring Broke with 6 hours on it?

Views: 6,036

Posted By GoFastSonic

Panther

The whole motor was done by Smitty in Brick

Forum: General Q & A

11-15-2007, 09:29 AM

Replies: 20

500 hp Valve Spring Broke with 6 hours on it?

Views: 6,036

Posted By GoFastSonic

Isky Springs

Wow I can not believe they would not recomend these springs for under 8000 rpms? What the hell do they think we are running. Thanks for the heads up.

Forum: General Q & A

11-14-2007, 07:54 PM

Replies: 20

500 hp Valve Spring Broke with 6 hours on it?

Views: 6,036

Posted By GoFastSonic

springs

Thanks for the help boat is running great now

Forum: General Q & A

11-14-2007, 10:50 AM

Replies: 20

500 hp Valve Spring Broke with 6 hours on it?

Views: 6,036

Posted By GoFastSonic

Bill K

The spring that broke was an Isky but I do not know the number. The ones that Anthony orderd to replace them where the Cranes from Summit. Waiting for him now to come check to make sure we put it in...

Forum: General Q & A

11-13-2007, 05:38 PM

Replies: 20

500 hp Valve Spring Broke with 6 hours on it?

Views: 6,036

Posted By GoFastSonic

Spring

Ok we pulled it apart today and looks like just the valve spring. Cylinder has 150 lbs of pressure and valve moves fine. Looks like we got lucky. I showed the spring to Anthony from Wazzup racing...

Forum: General Q & A

11-11-2007, 12:03 PM

Replies: 20

500 hp Valve Spring Broke with 6 hours on it?

Views: 6,036

Posted By GoFastSonic

Spring

Was doing alot of ideling around as patrol boat for SBI So hope all is well. Just cant believe a brand new motor. Talk about bad luck. First the race boat now my baby.

Forum: General Q & A

11-11-2007, 09:53 AM

Replies: 20

500 hp Valve Spring Broke with 6 hours on it?

Views: 6,036

Posted By GoFastSonic

springs

What are the chances that nothing else got broke?

Forum: General Q & A

11-11-2007, 06:59 AM

Replies: 20

500 hp Valve Spring Broke with 6 hours on it?

Views: 6,036

Posted By GoFastSonic

Spring

Thanks guys will be pulling it apart this afternoon and will post findings

Forum: General Q & A

11-10-2007, 10:58 AM

Replies: 20

500 hp Valve Spring Broke with 6 hours on it?

Views: 6,036

Posted By GoFastSonic

500 hp Valve Spring Broke with 6 hours on it?

Any ideas? Just had rebuilt from the ground up 500 hp EFI and broke an Intake valve spring yesterday in Key West. Motor was running great and then started to load up the plugs. Changed the plugs...

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