For a given immersion M-7 (sic) R-8, we completely determine bordism class of its self-intersection manifolds. This is done by computing the image of the unstable Hurewicz homomorphism h : pi(s)(8) RP infinity similar or equal to pi(8)QR P-infinity -> H-8(QRP(infinity); Z/2) and applying formulae of Asadi-Golmankhaneh and Eccles.