piston ring end gap

[almostJDM]

hey guys im trying to find out what my piston ring end gap should be, does anyone know how i go about finding this out


thanks


ill keep searching and delet this thread if i find out

[wed3k]

it says in the manual.

[almostJDM]

oh.....lol i think i found it .003X the bore

so mine will be .003 x 3.346, correct

ill go take a look at the manual

[almostJDM]

which number do i go by the manual has it like this

f22a1 .008-
.020
f22a6 .008-
.020
h23a1 .010-
.024
h22a1 .010-
.024

i just remeasured it i didnt have the ring sitting flat in the cylinder so i used an upside down piston tp push it down to make sure it was flat and now it was a sug fit with a .024 so if im supposed to read the bottom numbers then my gap is right on

[wed3k]

first of all, the rings have different end gaps. so you'll need to specify the ring and you are listing 4 different motors right there.

find the motor.
find the correct ring.
find the correct specification.

if they are new rings, the box should have a sheet for what the manufactirer wants them at.

[almostJDM]

lol oh haha thats for the first ring for the second ring on the h22a1 it has

.0240-
.0350

and for the oil control it doesnt have anything listed, they are just left blank



edit: oh wait i just looked a little closer and it had a small 1 by it so i looked over and it says for the oil control

.0130-
.0240

[almostJDM]

first of all, the rings have different end gaps. so you'll need to specify the ring and you are listing 4 different motors right there.

find the motor.
find the correct ring.
find the correct specification.

if they are new rings, the box should have a sheet for what the manufactirer wants them at.

ok also im not using any of these motors i have a dohc f20b so im gonna go by the h22 specs for refrence

[wed3k]

so .024 is good?

[almostJDM]

yea i think it is but im not 100% sure if the f20b gap is the same as the h22 gap so i emailed the guy(company) i bought my oem dohc f20b pistons from to see if he can find out, but if its like the other thicknesses that are like the h22 then its correct

[almostJDM]

ok now i dunno if this is a good way to find out or not but i tested a used set of rings from one of my old pistons and heres what i got compaired to my new set, same cylinder the gap in the same direction adn the rings sitting 1.5" down in the cylinder

old
top ring .024
2nd ring .026
oil cont. .024

new
top ring .024
2nd ring .026
oil cont .024

[wed3k]

so they're the same...

[almostJDM]

also i just got an email form the person and he baised on what he said they are already in spec but the spec he gave me are the same as the f22

top ring 0.20-0.35mm(.08 -.012in) svc limit: 0.60mm(.023in)
second ring 0.40-0.55mm(.015 -.021in) svc limit: 0.70mm(.027in)
oil ring 0.20-0.70mm(.08 - .027in) svc limit: 0.80mm(.031in)

i would think they would be more like the h22

[wed3k]

like i said, it depends on the manufacturer...they even make endless gap rings.

[almostJDM]

like i said, it depends on the manufacturer...they even make endless gap rings.

seeing as they are oem honda ones I think I'll go with that the manual says for the h22 rings.


thanks for the help

[wed3k]

that was never specified in this thread until a bajillion posts later. i would have shut my mouth since the first post.