Hey guys i know this has probably been asked before but couldnt really find anything
i am building a rb25/30 and am currently looking at a set of forgies to suit a rb30et with an advertised compression ratio of 8.5-1 when used with single cam head.
will this bring my compression down to about 8.2-1 with the rb25det head?
here is some specs on the pistons
Piston Type Forged Ring Set Part # C1686 Compression Height 32mm/1.261in Sizes Available: STD, 050, 1.00 Piston Crown Capacity 4.5cc Ring 1 Ring 2 Ring 3 Dish Type Steel Nitrided
Barrel plain
Reverse torsional taper face scraper Duraflex 3 piece oil ring Bowl Depth 0mm/in Width 1.5mm/0.059in 1.5mm/0.059in 2.8mm/0..11in Compression Ratio 8.5 Depth 3.4mm/0.133in 3.8mm/0.149in 3.9mm/0.153in Piston Mass 322 grams (0.50)
Pin Mass 84 grams Pin Diameter 21mm/0.827in Pin Locking Device
Spiral Lock Clearance 0.12mm/.005in Skirt Coated No