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Message: <blockquote data-quote="gschuld" data-source="post: 141219" data-attributes="member: 26643">Hello, first post here.I've just purchased a 1979 Bobcat 730 with the Wisconsin VH4D 30hp at 2800rpm air cooled gas motor.  11gpm at I believe at around 1700 psi is the factory spec.This is a personal use machine.  It won't be seeing a ton of hours per year.  For several reasons it's important that I not exceed around a 5000 lb operational weight(730 is 4450 stock)I have an interest in using some attachments, like a fronthoe and a 4 in 1 bucket.  The 11 gpm flow of the 730 is lower than would be ideal for such attachments.I've read mentions of service techs of old increasing pressure at the relieve valve to boost power to the cylinders a modest amount without harming the system on these older machines.I'd like to get opinions on whether this is realistic.  Assuming a top running 730(engine/hoses/drive motors/cylinders/fittings/etc.)Thanks,George</blockquote>