I Have a VERY clean block I've been stitting on for years that was "rough" bored .040 over a long time ago and it has about .002" of taper.
The Widest parts are at the very top. I'm worried that I may end up paying for junk in the long run and would like to be reasured that this taper
can be removed without further widening the top portion of the bore.
(widest bore @top)
#1 - 3.3859
#2 - 3.3869
#3 - 3.3869
#4 - 3.3859
Those are the widest points near the top of the bore, and they all get smaller on the way down...
It was done a while back In prep for a future build, I'm not sure why they tapered it, other than
they never had any pistons to work with.
Now I have a set of 2g pistons 86mm over, piston skirts coated with PC-9 by swaintech
-Stock size- Swaintech Coated
A- 3.3845 - 3.3878
B- 3.3846 - 3.3869
C- 3.3844 - 3.3867
D- 3.3841 - 3.3860
The reccomended PTW from Swaintech is the tight end of Mitsubishi Specs measured after coating is applied
so somewhere in the .0010-.0015 range
I Probly confused the crap out of everyone, But does anyone with any Machine shop XP think this would be workable
seems like it might as long as the rebore does not remove more than .001 out of the top third of the cly?
The Widest parts are at the very top. I'm worried that I may end up paying for junk in the long run and would like to be reasured that this taper
can be removed without further widening the top portion of the bore.
(widest bore @top)
#1 - 3.3859
#2 - 3.3869
#3 - 3.3869
#4 - 3.3859
Those are the widest points near the top of the bore, and they all get smaller on the way down...
It was done a while back In prep for a future build, I'm not sure why they tapered it, other than
they never had any pistons to work with.
Now I have a set of 2g pistons 86mm over, piston skirts coated with PC-9 by swaintech
-Stock size- Swaintech Coated
A- 3.3845 - 3.3878
B- 3.3846 - 3.3869
C- 3.3844 - 3.3867
D- 3.3841 - 3.3860
The reccomended PTW from Swaintech is the tight end of Mitsubishi Specs measured after coating is applied
so somewhere in the .0010-.0015 range
I Probly confused the crap out of everyone, But does anyone with any Machine shop XP think this would be workable
seems like it might as long as the rebore does not remove more than .001 out of the top third of the cly?