Has anyone got a single HC piston available so i can put into my HD block and compare the 2 side by side please?
What knowledge do you seek? I have done this before and might be able to help.
Mainly just to look at the differences @JC050, mate in facey is getting told to get HC pistons machined down to achieve a boost friendly compression ratio, by a mechanic mind you, so wanted to compare and exchange notes and thought with him
1.3 pistons - big dome
1.5 pistons - medium dome
1.6 pistons - almost flat
Apart from the dome all other aspects of the pistons are the same.
Thanks @JC050, would you know if it is true that the HD Block is slightly Taller than the HC Block?
Yes it is taller.
@JC050 I am the guy who is getting told by an engine builder that i should get new hce dome pistons and he machines them down to suit turboing the hde 1.6 motor
this would be useless wouldnt it ?
It would interesting to know why the engine builder would like to machine a dome top away when a lower compression flat top would seem to be a better place to start. What CR are they hoping to achieve? Stock is 9.5:1.
1.3 pistons in the 1.6 will up the compression, putting the 1.6 pistons in the 1.3 engine will be a better way to go turbo, but then you’d have a 1.3 obviously. From my understanding the 1.6 piston stock are good for at least 1bar of boost, which i would think is plenty? you’re going to have other issues to worry about above that power level anyway. thats all from reading internet posts, not from experience.
2years later lmfao… dummy :-/
Almost a shame i am now playing EJ’s as still wanted to do the 1.6 pistons in the 1.3:joy:
You’d still have a 1.6, the crank has a longer stroke that gives the bigger displacement not the pistons.
u don’t say lol but if you put 1.6 flat pistons in a 1.3, u 'd have a 1.3 crank then, so u’d have a 1.3 wouldn ya. but with lower comp pistons and less sharp edges to the top too which means less likely to have hot spots and pre-ignition.
think ya might have mis-read what i wrote welby
Sorry thought you were talking about the 1.6.