Paul Smith
Site Supporter
Hi I was reading on here that 1.0 pistons are better than 1.3 pistons i was just wondering why that was?
Do they work better in the 1.3?
Thanks
Paul
Do they work better in the 1.3?
Thanks
Paul
1.0 / 1.3 Pistons which are better
- Thread starter Paul Smith
- Start date
The are flat not dished, which ups the compression iirc.
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Paul Smith
Site Supporter
Thought so.
Why did NIssan dish the 1.3 pistons if they were already making better flat ones?
What does iirc mean?
Paul
Why did NIssan dish the 1.3 pistons if they were already making better flat ones?
What does iirc mean?
Paul
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OP
Paul Smith
Site Supporter
Cool, that answers that one
frank
Club Member
paul, the 1.3 needs a bigger combustion chamber (to give it the same c/r as the 1.0) hence the dish in the piston
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Paul Smith
Site Supporter
If the 1.3 had a flat piston would the compression be to much?
I thought i may be because the pistons may hit the valves?
I thought i may be because the pistons may hit the valves?
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Paul Smith
Site Supporter
Also after thinking about it the pistons are probably the same length its the cranks that are different, and if they are the same length it shouldn't hit. Suppose the easiest way to look at it is, does and 1.3 cylider head fit and run on a 1.0 bottom end someone on here must have done it?
The only thing I can think that'll be different size wise between the two engines if they have the same compression ratio will be the crank. Because the 1.3 is just a 1 litre with a longer stroke. Maybe frank or someone else with knowledge on the guts of these engines can clear something up?
