Hy guys,
i´m new here but not new to M42.
Had several E30 M42´s but now i´m going serious with my E30 318is Rally Car build.
My actual Topic is the Engine and i want to know or ask some of you engine specialists about your oppinion (sorry for my bad spelling)
Goal:
M42 Engine, up to 2000ccm, Output at least 200hp, about 8000rpm maybe higher, reliable (as one could talk about reliable in a race car :-) )
Thougts:
Std Engine: Stroke 81mm, 84mm Piston with 31,65 compression height and 380grams, 140mm rod
Option1: M44 Crank Stroke 83,5mm, Special Made Piston i actual have here 84mm with 27,4mm compression heigth and 291grams, 140mm rod
same capacity 1800ccm BUT about 1656grams weigth saving, have to remove about 2,7mm block deck heigth
Option2: M47 Crank (built to fit) Stroke 88mm. Special Made Piston i actual have here 84mm with 27,4mm compression heigt and 291grams, 140mm rod, Capacity 1950,7ccm
BUT about 1744grams weigth gain because of the heavier M47 crank (both cranks m44 and m47 would be machined and lightend)
Rest of the Setup will be Dbilas Racing ITB Kit, Cat Cams 302° camshaft kit including springs and all of the other head stuff...
Head gets milled and polished, maybe 6mm valves...
To see the Pistons go to Facebook and search "Project E30"
Tell me what you think!
Nice to be here!
Topic: What do you think about this Set-Up (Read 2254 times)