S13 sr20det lifter bore scratched - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

jdmgtom · 12-23-2019, 11:45 AM

Hey, So I took my head to a machine shop to get my valves cleaned and to have new valves seals installed, they just called me back saying I need a new head. One lifter was stuck and they was able to get it out and saying the lifter bore is scratched. I just picked up it and its light hairline scratch, not deep at all. Has anyone experienced this? Am I really going to need a new head?
Thanks

S14rebuild · 12-23-2019, 12:44 PM

Pics would help tremendously...

But if its a very fine light scratch, some emery cloth, light polish will do. Just depends how bad the scratch is...

jdmgtom · 12-23-2019, 01:00 PM

jdmgtom · 12-23-2019, 01:02 PM

With flash and a little bigger picture

S14rebuild · 12-24-2019, 07:43 AM

Get a dremel with a polishing pad on it and buff that scratch down. And ull be good togo. Wouldnt replace a head for that.

jdmgtom · 12-24-2019, 07:46 AM

Quote:

Originally Posted by S14rebuild

Get a dremel with a polishing pad on it and buff that scratch down. And ull be good togo. Wouldnt replace a head for that.

THANK YOU! I will give it a shot, I cannot find another head anyways right now..

EFITTZY · 12-24-2019, 08:53 AM

Quote:

Originally Posted by S14rebuild

Get a dremel with a polishing pad on it and buff that scratch down. And ull be good togo. Wouldnt replace a head for that.

S14rebuild beat me to it. Had a similar issue on a 1.6 miata head. Hairline scratch on lifter bore, but was able to polish it out no issues at all. Clean her up and you should be good to go!

S14rebuild · 12-24-2019, 09:09 AM

Quote:

Originally Posted by jdmgtom

THANK YOU! I will give it a shot, I cannot find another head anyways right now..

Np, good luck with the build

jdmgtom · 12-24-2019, 09:15 AM

Quote:

Originally Posted by EFITTZY

S14rebuild beat me to it. Had a similar issue on a 1.6 miata head. Hairline scratch on lifter bore, but was able to polish it out no issues at all. Clean her up and you should be good to go!

Thank you for the reassurance, I've been going to this machine shop for a while now, I guess they didn't want to mess with this one.

jdmgtom · 12-24-2019, 09:16 AM

Quote:

Originally Posted by S14rebuild

Np, good luck with the build

Gonna need it, its been a roller coaster with this car

RalliartRsX · 12-24-2019, 12:03 PM

Quote:

Originally Posted by S14rebuild

Get a dremel with a polishing pad on it and buff that scratch down. And ull be good togo. Wouldnt replace a head for that.

Second this!

jdmgtom · 12-30-2019, 02:18 PM

Quote:

Originally Posted by S14rebuild

Get a dremel with a polishing pad on it and buff that scratch down. And ull be good togo. Wouldnt replace a head for that.

Noob question... would you use compound wax?

S14rebuild · 12-30-2019, 02:59 PM

Yea, that would work, anything with light abrqsive, used to smoth downw the scratch

jdmgtom · 12-30-2019, 05:38 PM

Quote:

Originally Posted by S14rebuild

Yea, that would work, anything with light abrqsive, used to smoth downw the scratch

10-4, I'll give it a shot and let you guys know after

mechanicalmoron · 12-31-2019, 06:19 PM

How many heads DON'T have a scratched lifter bore? How new is your head?

Try to polish evenly and flatly, don't make waves or let it go off-round.

Since it looks like they did half the damage, did they offer to pay for half the head?

jdmgtom · 01-01-2020, 11:05 AM

Quote:

Originally Posted by mechanicalmoron

How many heads DON'T have a scratched lifter bore? How new is your head?

Try to polish evenly and flatly, don't make waves or let it go off-round.

Since it looks like they did half the damage, did they offer to pay for half the head?

Nah, they told me I didn't owe them anything and told me I could find a sr20 head at any junk yard lol not sure if I could use a Sentra sr20 head but I don't even wanna do all of that.

mechanicalmoron · 01-01-2020, 11:10 AM

Quote:

Originally Posted by jdmgtom

Nah, they told me I didn't owe them anything and told me I could find a sr20 head at any junk yard lol not sure if I could use a Sentra sr20 head but I don't even wanna do all of that.

If you have a spare lifter, you could use that to lap it. If you have the stuck one, you could cut off any area that may be deformed, and put a little handle on it. There's also tiny hones. Either way, run it like a hone.

Check it's size, if you're lucky it's a tight one and you can match (or stay under) the loosest.

jdmgtom · 01-01-2020, 11:19 AM

Quote:

Originally Posted by mechanicalmoron

If you have a spare lifter, you could use that to lap it. If you have the stuck one, you could cut off any area that may be deformed, and put a little handle on it. There's also tiny hones. Either way, run it like a hone.

Check it's size, if you're lucky it's a tight one and you can match (or stay under) the loosest.

I don'y have a spare lifter and that sounds too complicated for me. I'll run this head after I buff it and run it and hope that it'll be okay. If not.. then I guess I'm gonna have to do it all over again with a new head.. lol..

S14rebuild · 01-01-2020, 04:26 PM

Smooth it out, and stick the lifter in. The lifters body doesnt move up and down, so even if it goes in a little tight ur still golden.

And.... if my machine shop doesnt know enough about where my motor comes from(obvs japan, and cant souce a new head at the local junkyard) i would let them work on it. .02

mechanicalmoron · 01-01-2020, 05:18 PM

Quote:

Originally Posted by jdmgtom

I don'y have a spare lifter and that sounds too complicated for me. I'll run this head after I buff it and run it and hope that it'll be okay. If not.. then I guess I'm gonna have to do it all over again with a new head.. lol..

That was pretty simple. If it hurts you too badly to spend several seconds thinking with moderate intensity in order to get a good result, cars may be the wrong hobby for you.

jdmgtom · 01-01-2020, 08:28 PM

Quote:

Originally Posted by mechanicalmoron

That was pretty simple. If it hurts you too badly to spend several seconds thinking with moderate intensity in order to get a good result, cars may be the wrong hobby for you.

thanks for your input buddy

12-23-2019, 11:45 AM	#1
jdmgtom Leaky Injector Join Date: Aug 2018 Location: St. Petersburg, FL Age: 28 Posts: 147 Trader Rating: (0) Feedback Score: 0 reviews	S13 sr20det lifter bore scratched Hey, So I took my head to a machine shop to get my valves cleaned and to have new valves seals installed, they just called me back saying I need a new head. One lifter was stuck and they was able to get it out and saying the lifter bore is scratched. I just picked up it and its light hairline scratch, not deep at all. Has anyone experienced this? Am I really going to need a new head? Thanks __________________ _________ IG - g_t0m Last edited by jdmgtom; 12-23-2019 at 01:00 PM..

12-23-2019, 01:00 PM	#3
jdmgtom Leaky Injector Join Date: Aug 2018 Location: St. Petersburg, FL Age: 28 Posts: 147 Trader Rating: (0) Feedback Score: 0 reviews	__________________ _________ IG - g_t0m Last edited by jdmgtom; 12-23-2019 at 01:04 PM.. Reason: Bigger picture

12-23-2019, 01:02 PM	#4
jdmgtom Leaky Injector Join Date: Aug 2018 Location: St. Petersburg, FL Age: 28 Posts: 147 Trader Rating: (0) Feedback Score: 0 reviews	With flash and a little bigger picture __________________ _________ IG - g_t0m

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12-23-2019, 12:44 PM	#2
S14rebuild BANNED Join Date: May 2019 Location: Florida-FAIL Posts: 2,497 Trader Rating: (8) Feedback Score: 8 reviews	Pics would help tremendously... But if its a very fine light scratch, some emery cloth, light polish will do. Just depends how bad the scratch is...

12-24-2019, 07:43 AM	#5
S14rebuild BANNED Join Date: May 2019 Location: Florida-FAIL Posts: 2,497 Trader Rating: (8) Feedback Score: 8 reviews	Get a dremel with a polishing pad on it and buff that scratch down. And ull be good togo. Wouldnt replace a head for that.

12-30-2019, 02:59 PM	#13
S14rebuild BANNED Join Date: May 2019 Location: Florida-FAIL Posts: 2,497 Trader Rating: (8) Feedback Score: 8 reviews	Yea, that would work, anything with light abrqsive, used to smoth downw the scratch

12-31-2019, 06:19 PM	#15
mechanicalmoron Zilvia FREAK! Join Date: Jul 2013 Location: tx Posts: 1,074 Trader Rating: (0) Feedback Score: 0 reviews	How many heads DON'T have a scratched lifter bore? How new is your head? Try to polish evenly and flatly, don't make waves or let it go off-round. Since it looks like they did half the damage, did they offer to pay for half the head?

01-01-2020, 04:26 PM	#19
S14rebuild BANNED Join Date: May 2019 Location: Florida-FAIL Posts: 2,497 Trader Rating: (8) Feedback Score: 8 reviews	Smooth it out, and stick the lifter in. The lifters body doesnt move up and down, so even if it goes in a little tight ur still golden. And.... if my machine shop doesnt know enough about where my motor comes from(obvs japan, and cant souce a new head at the local junkyard) i would let them work on it. .02