How much hp does a hewland motor have? Hewland claimed having got 70-73 HP, 47.5 Lb.ft, with a Fuel Economy of .45 lb/HP/Hr in the racing version, and .39 in an economy engine. No further info was released about this Engine Research.Why choose mbr for hewland parts? We provide services to a wide UK and international customer base. We try to keep a good stock of Hewland parts available here at MBR and can usually supply most parts within a quick timescale, we can also provide quotes over the telephone or by e-mail.How do i contact hp support? Contact HP Support to get help Sign in or identify your product to see available support options. Sign in now for the easiest path to all of your support options and a personalized experience. Or, select your product type below.