petex19
True Classic
Fall project is pulling 1500 motor and building up a 1600 stroker motor using a Fiat Punto 67.4mm crankshaft and stock 1500 con-rods and pistons.
XWeb members have been very generous with their knowledge and personal experience but I still have questions....
Stock 1500 crankshaft is 63.9mm and I'll be using a 67.4mm crankshaft for the build so does that mean the distance the piston will protrude above the block deck will be 3.5mm or will it be half that amount 1.75mm ???
Secondly does anyone know how much a piston can successfully stick out above the block deck and be okay? Midwest sells Wiseco flat top pistons that have a chamfered top and stick out .075" or 1.9mm but will only work with a stock 1500 head with recessed area and stock camshaft giving 11:1 compression.
Has anyone done a 1600 stroker using a U.S 1500 head and if so what route did you take with your pistons?
I don't know if I should leave the recessed area and have 1.6mm or so milled off the piston tops and have them chamfered; or should I have the head recessed area milled flat and have 3mm or so milled off the piston tops flat.
I would like my compression at 10.5:1 which I've read is optimum for 93 octane fuel.
I'm so looking forward to dropping the motor and passing my winter building up a beautiful stroker bad ass engine but I want to make sure that I have a good game plan going forward.
I almost forgot, I am planning on installing a 40/80 camshaft with a lift in the 10.5mm range
'PeteX1/9
XWeb members have been very generous with their knowledge and personal experience but I still have questions....
Stock 1500 crankshaft is 63.9mm and I'll be using a 67.4mm crankshaft for the build so does that mean the distance the piston will protrude above the block deck will be 3.5mm or will it be half that amount 1.75mm ???
Secondly does anyone know how much a piston can successfully stick out above the block deck and be okay? Midwest sells Wiseco flat top pistons that have a chamfered top and stick out .075" or 1.9mm but will only work with a stock 1500 head with recessed area and stock camshaft giving 11:1 compression.
Has anyone done a 1600 stroker using a U.S 1500 head and if so what route did you take with your pistons?
I don't know if I should leave the recessed area and have 1.6mm or so milled off the piston tops and have them chamfered; or should I have the head recessed area milled flat and have 3mm or so milled off the piston tops flat.
I would like my compression at 10.5:1 which I've read is optimum for 93 octane fuel.
I'm so looking forward to dropping the motor and passing my winter building up a beautiful stroker bad ass engine but I want to make sure that I have a good game plan going forward.
I almost forgot, I am planning on installing a 40/80 camshaft with a lift in the 10.5mm range
'PeteX1/9