Sr20det piston rings on ca18det - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

cdenny619 · 02-19-2017, 02:32 PM

I was wondering if sr piston rings would work on a ca. I just need one set of rings and I don't find it necessary to buy a whole set of rings if i can just use some old ones i have laying around. Sorry if this is a stupid question but i just need to know. Thank you

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ANDY black s13 · 02-19-2017, 08:45 PM

the bore sizes are different so nope no worky
CA18 83mm,SR20 87mm

cdenny619 · 02-19-2017, 08:47 PM

Quote:

Originally Posted by ANDY black s13

the bore sizes are different so nope no worky

The bore doesn't seem too far off tho. If I filed the rings to make the end gaps correct, it doesn't seem like it would be too hard

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ANDY black s13 · 02-20-2017, 08:44 AM

if you force a 87mm bore piston ring into an 83mm bore it will have massive excess ring pressure on the bore,
it will get super hot from the pressure/drag/friction
from being over stressed into a smaller bore it will soon crack/break the ring
likely break piston ring lands and ruin the bore
just get a set of piston rings for a CA18,at $50/60? and chance it will last a lot longer

cdenny619 · 02-20-2017, 08:54 AM

Quote:

Originally Posted by ANDY black s13

if you force a 87mm bore piston ring into an 83mm bore it will have massive excess ring pressure on the bore,
it will get super hot from the pressure/drag/friction
from being over stressed into a smaller bore it will soon crack/break the ring
likely break piston ring lands and ruin the bore
just get a set of piston rings for a CA18,at $50/60? and chance it will last a lot longer

I was looking and a set costs like 150

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ANDY black s13 · 02-20-2017, 12:37 PM

http://www.perfectengine.com/Hasting...has-2c4221.htm
I was $9 short,Hastings are made in US so probs get them direct for less?
I got a set for a toyota 4 banger delivered in UK for £55
japan made NPR rings are cheaper slightly,but hastings has a better oil control ring design

02-19-2017, 02:32 PM	#1
cdenny619 Join Date: Apr 2016 Location: Chicago Illinois Posts: 6 Trader Rating: (0) Feedback Score: 0 reviews	Sr20det piston rings on ca18det I was wondering if sr piston rings would work on a ca. I just need one set of rings and I don't find it necessary to buy a whole set of rings if i can just use some old ones i have laying around. Sorry if this is a stupid question but i just need to know. Thank you Sent from my SM-G550T1 using Tapatalk

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02-19-2017, 08:45 PM	#2
ANDY black s13 Zilvia Member Join Date: Mar 2012 Location: erith kent england Age: 53 Posts: 153 Trader Rating: (0) Feedback Score: 0 reviews	the bore sizes are different so nope no worky CA18 83mm,SR20 87mm

02-20-2017, 08:44 AM	#4
ANDY black s13 Zilvia Member Join Date: Mar 2012 Location: erith kent england Age: 53 Posts: 153 Trader Rating: (0) Feedback Score: 0 reviews	if you force a 87mm bore piston ring into an 83mm bore it will have massive excess ring pressure on the bore, it will get super hot from the pressure/drag/friction from being over stressed into a smaller bore it will soon crack/break the ring likely break piston ring lands and ruin the bore just get a set of piston rings for a CA18,at $50/60? and chance it will last a lot longer

02-20-2017, 12:37 PM	#6
ANDY black s13 Zilvia Member Join Date: Mar 2012 Location: erith kent england Age: 53 Posts: 153 Trader Rating: (0) Feedback Score: 0 reviews	http://www.perfectengine.com/Hasting...has-2c4221.htm I was $9 short,Hastings are made in US so probs get them direct for less? I got a set for a toyota 4 banger delivered in UK for £55 japan made NPR rings are cheaper slightly,but hastings has a better oil control ring design