re-ring

ghetto3 · 02-05-2013, 02:56 PM

Is it pointless/futile to replace rings without honing the block first? I did this years ago on a 202 red engine with no issues but id like to prevent gremlins now if i can while everything is in bits. Worth replacing pistons too? Not after big power just sick of cleaning the black soot streak off the driveway after every start up.
P.S. Stems seals are being done.

JDM323 · 02-05-2013, 03:33 PM

honing at least, as for pistons depends on condition, piston to bore clearance and ring groove wear in piston but with new pistons engine life will be longer than just a de-lip hone and rings

project.r.racing · 02-05-2013, 05:15 PM

Hone it. If lip present, then bore it.

Cosmo Dude · 02-05-2013, 05:27 PM

If you can see the rifling easily then maybe not but if the bores are smooth then slap a hone through it. For the work you're doing though you should get the block cleaned and honed professionally just so you're happy that you did the job 100%.

ghetto3 · 02-05-2013, 07:15 PM

The rifling is clearly evident, there is no scuffing perpendicular to the crank where pistons would exert the most friction.
It is a lowish k block and apart from replacing all seals/gaskets im wondering whether to just slap the refreshed head on it and charge away.
Once i pull it down im sure it would turn into a "may as well get forgies" kind of build and it will be off the road forever.
It would never pass a (nsw) pit inspection so ive got about 8 months to get it together!

I think ive just answered my own question.

Cosmo Dude · 02-05-2013, 07:24 PM

If it's a P2 or P3 engine then rings are a must. Mazda had these engines built by Kia who used crap rings.

Clean_Cookie · 02-05-2013, 07:44 PM

it was a p3. in excellent condition. best motor ive seen. 155kms on it... i have a set of rings here too you can use if I can find them if you want.

ghetto3 · 02-05-2013, 08:36 PM

After much consideration, well mainly looking at my bank account, its headwork only for now,get throttle bodies working and let those trumpets sing like the horns of jericho!!!

Incidently if anyone is chasing a jenvey kit (or anything off their site) i can acquire them for less than retail price including duratec kits.

02-05-2013, 02:56 PM	#1
ghetto3 Senior Member Join Date: Sep 2011 Location: north coast nsw Car: 97 ba 1.8 323 Posts: 799	re-ring Is it pointless/futile to replace rings without honing the block first? I did this years ago on a 202 red engine with no issues but id like to prevent gremlins now if i can while everything is in bits. Worth replacing pistons too? Not after big power just sick of cleaning the black soot streak off the driveway after every start up. P.S. Stems seals are being done.

02-05-2013, 03:33 PM	#2
JDM323 Senior Member Join Date: May 2011 Location: North Qld Car: 2002 BJ2 protege Posts: 1,241	honing at least, as for pistons depends on condition, piston to bore clearance and ring groove wear in piston but with new pistons engine life will be longer than just a de-lip hone and rings __________________ http://www.astinagt.com/forums/showthread.php?t=18798 WORKLOG

02-05-2013, 05:27 PM	#4
Cosmo Dude コスモ Join Date: Dec 2002 Location: Location: Vic Car: Mazda '95 Astina I4, '86 B2K and '10 3 MZR-CD Posts: 7,888 View Photos By: Cosmo Dude	If you can see the rifling easily then maybe not but if the bores are smooth then slap a hone through it. For the work you're doing though you should get the block cleaned and honed professionally just so you're happy that you did the job 100%. __________________ My 'stina Hatch

02-05-2013, 07:24 PM	#6
Cosmo Dude コスモ Join Date: Dec 2002 Location: Location: Vic Car: Mazda '95 Astina I4, '86 B2K and '10 3 MZR-CD Posts: 7,888 View Photos By: Cosmo Dude	If it's a P2 or P3 engine then rings are a must. Mazda had these engines built by Kia who used crap rings. __________________ My 'stina Hatch

02-05-2013, 07:44 PM	#7
Clean_Cookie obsessed-incomplete-broke Join Date: Oct 2008 Location: Brisbane Car: BA Hardtop/Hatch Posts: 5,441	it was a p3. in excellent condition. best motor ive seen. 155kms on it... i have a set of rings here too you can use if I can find them if you want. __________________ Worklog

02-05-2013, 05:15 PM	#3
project.r.racing Senior Member Join Date: Sep 2004 Location: n/a Car: n/a Posts: 10,929	Hone it. If lip present, then bore it.

02-05-2013, 07:15 PM	#5
ghetto3 Senior Member Join Date: Sep 2011 Location: north coast nsw Car: 97 ba 1.8 323 Posts: 799	The rifling is clearly evident, there is no scuffing perpendicular to the crank where pistons would exert the most friction. It is a lowish k block and apart from replacing all seals/gaskets im wondering whether to just slap the refreshed head on it and charge away. Once i pull it down im sure it would turn into a "may as well get forgies" kind of build and it will be off the road forever. It would never pass a (nsw) pit inspection so ive got about 8 months to get it together! I think ive just answered my own question.

02-05-2013, 08:36 PM	#8
ghetto3 Senior Member Join Date: Sep 2011 Location: north coast nsw Car: 97 ba 1.8 323 Posts: 799	After much consideration, well mainly looking at my bank account, its headwork only for now,get throttle bodies working and let those trumpets sing like the horns of jericho!!! Incidently if anyone is chasing a jenvey kit (or anything off their site) i can acquire them for less than retail price including duratec kits.