Join Date: Nov 2001
Location: North Central Illinois
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Re: 1.3 vs. 1.6 rod sizes
First off , I don't believe there were any low comp. pistons available , at least that I could find . My idea was a simple B&M aftermarket belt drive supercharger . I built one "1 off " motor , that didn't work , either . Turns out , it was assembled with the rings at cast specs , with my $600 forged pistons . Needless to say , 3k later the rings are fried , and 3 pistons are junk . That one is going to get 78mm pistons, off the shelf cast , and rebuild the Swift's bottom end . I guess we'll find out how good the liners are , since this is .100" over the stock 1298 bore size . The 1.6 rods are the same strength as far as I and my machinist can tell , they just plain suck . The problem is the extra .500" stroke in the 1600 engine, the rods had to be lighter or the crank weights would never clear the block . If you want to lower the compression ratio , the cheapest way to do that would be to use the aftermarket shims , such as dead soft copper . They usually only cost about $180 , just have to send off a donor head gasket to match it . Also, they are reusable , and no head gasket is required . I'm still trying to come up with a better and stronger "recipe" engine , using off the shelf parts to keep the cost to a minimum .