Topic: Blown head gasket (Read 2652 times)

billywolf067 · « **on:** August 19, 2015, 01:02:45 PM »

I have recently rebuilt my 80 cubic inch evo. I have a 94 dyna low rider i put arp head bolts an new studs an used james gaskets. I got a rear head gasket leak so i tore the rear head and jug off put new gaskets on and as soon as i started the bike the gasket blew again. Any suggestions would be very helpful and appreciated

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johnsachs · « **Reply #1 on:** August 19, 2015, 06:55:30 PM »

Several common possibilities.

Stud pulling.
Head gasket surface, (cylinder or head) not flat. Wrong or improper torque procedure.
John

billywolf067 · « **Reply #2 on:** August 19, 2015, 07:30:44 PM »

Thanks

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johnsachs · « **Reply #3 on:** August 20, 2015, 08:46:28 AM »

Also, if using a MLS style head gasket, you DO NOT use the O-rings on the cylinder dowels.
John

HILLSIDECYCLE.COM · « **Reply #4 on:** August 31, 2015, 06:37:52 AM »

With all the engines we build here, I can count on 1 hand the number of times we have used a replacement cylinder head stud.
ARP hardware is top-shelf no doubt.
We use Cometic head gaskets here.
Scott

Author Topic: Blown head gasket (Read 2652 times)

billywolf067

Blown head gasket

johnsachs

Re: Blown head gasket

billywolf067

Re: Blown head gasket

johnsachs

Re: Blown head gasket

HILLSIDECYCLE.COM

Re: Blown head gasket