instead of lowering/weakening your engine bearers or rubber mountings or hull, these can be used to relocate the original engine mounting holes higher, wider and a little longer !
2 x special plates, manufactured by Vire (56622 & 56621 in the original Valmet A4 size parts list )
2 Item Items
Warning: Last items in stock!
tested/refurbished condition - were rusty, i have wire-wheeled and sprayed with aluZinc primer.
bolt under the engine (4 bolts included), 1 each side (port/starboard)
the 'S' shape, effectively raises the underside +35mm higher, you would fit over your vibration mounting/engine bearer.
each rear mounting is displaced 65mm wider in the same fore/aft position as before (width between mounting centres now 380 not original 250)
each front mounting is displaced 65mm wider but 45mm more forward than before (width between mounting centres 380 not original 250, length between mounting centres now 285 not original 240)