3sgte stroker, i finally decided on my spare 3sgte... Options

[thedevilmaycrie]

im thinkin on making my spare 3sgte a stroker input please...

how do you build these with 5sfe... is it the 3sgte block, rods and pistons w/ a 5sfe crank shaved down?

-DMC

[Junior]

If you look at the specs for the 5sfe and 3sgte the differences in the lower end is the bore and stroke length. The bore difference is 1 or 2 mm. The main reason the 5s has a larger displacement is due to the stroke length. From what I know, from research done in the past, the 5s crank will fit right in. Its been debated, check the MR-2 forums, whether or not a 3s head can be mated with a 5s block. It can be done, but its not worth it.

[Kwanza26]

If you look at the specs for the 5sfe and 3sgte the differences in the lower end is the bore and stroke length.  The bore difference is 1 or 2 mm.  The main reason the 5s has a larger displacement is due to the stroke length.  From what I know, from research done in the past, the 5s crank will fit right in.  Its been debated, check the MR-2 forums, whether or not a 3s head can be mated with a 5s block.  It can be done, but its not worth it.
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I really doubt the 5S crank will simply drop in. The 5S crank is pretty big compared to the 3S... but whatever. Nothing against the MR-2 guys, but they're also the guys who claimed to have used S2000 shimless buckets to do shimless conversions on 5SFE's... when in fact, the S2000 doesn't even use buckets/shims... so don't take what they say as the gospel truth...

IMO, the 3SG base is far better anyway. Unless you're doing an all out drag motor with big torque as the goal, the 3SG is a perfect squared motor with some of the toughest factory rods... and the 5S bottom-end just can't match that without a lot of custom work.