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Author Topic: SRP D16Z6 damaged valve reliefs  (Read 6137 times)

1991civicsi

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SRP D16Z6 damaged valve reliefs
« on: March 28, 2009, 10:24:11 PM »





After filing:

After filing

I noticed that the valve reliefs were weakened and partially damaged along the perimeter of the pistons so I filed away the damaged areas.
Does this look ok to reuse these pistons?
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DmC

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Re: SRP D16Z6 damaged valve reliefs
« Reply #1 on: March 28, 2009, 11:17:26 PM »
They should be fine vitara's look like that new.
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1991civicsi

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Re: SRP D16Z6 damaged valve reliefs
« Reply #2 on: March 28, 2009, 11:23:24 PM »
I should have used Vitaras.  :P
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DmC

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Re: SRP D16Z6 damaged valve reliefs
« Reply #3 on: March 29, 2009, 12:25:01 AM »
Quote from: 1991civicsi on March 28, 2009, 11:23:24 PM
I should have used Vitaras.  :P
I'm actually smoothing the valve reliefs on some right now sitting at my kitchen table with some vitara's and 400grit. they look like shit new.
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Joseph Davis

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Re: SRP D16Z6 damaged valve reliefs
« Reply #4 on: March 29, 2009, 11:45:30 AM »
Are the pin bores scuffed?

How much clearance is there between ring and ring land?  Stick a feeler in there and measure, a lot of pistons have slopped out lands and that shit is a waste of time to use especially with Vitaras being fifty nine cents plus shipping.

Lastly, and this is the MOST IMPORTANT, can you post pictures that are in focus?

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1991civicsi

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Re: SRP D16Z6 damaged valve reliefs
« Reply #5 on: March 29, 2009, 04:47:01 PM »
iphone pics FTL

Im hosting better pics now.

I havent removed the pin, should I? (The spiral locks are not re-useble)

Ill measure ring to ringland clearance.
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"quotquotThis ain'#039#039t no forum, its a gang.. "quotquot BigDaddyVtec

1991civicsi

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Re: SRP D16Z6 damaged valve reliefs
« Reply #6 on: March 29, 2009, 05:03:06 PM »








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Joseph Davis

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Re: SRP D16Z6 damaged valve reliefs
« Reply #7 on: March 29, 2009, 05:20:44 PM »
Alright, those look better than I thought they would from your phone pics.  There's a tiny amount of carbon blasted out of the top of some of the pistons but no actual pockmarking of the piston surface - what detonation it saw was cosmetic, and shouldn't hurt anything.

Spiralocs are dirty cheap, if those were my pistons I'd pull the pins to make sure everything is legit.
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1991civicsi

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Re: SRP D16Z6 damaged valve reliefs
« Reply #8 on: March 29, 2009, 05:25:12 PM »
 ;)
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Joseph Davis

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Re: SRP D16Z6 damaged valve reliefs
« Reply #9 on: March 29, 2009, 05:26:49 PM »
Don't forget to measure those ring to land clearances, sir.
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1991civicsi

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Re: SRP D16Z6 damaged valve reliefs
« Reply #10 on: March 29, 2009, 05:29:46 PM »
Ok. What exactly am I looking for? Scuffing inside the wrist pin hole?  ???
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ryan89crx

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Re: SRP D16Z6 damaged valve reliefs
« Reply #11 on: March 29, 2009, 05:52:25 PM »
Quote from: Joseph Davis on March 29, 2009, 05:20:44 PM
Spiralocs are dirty cheap, if those were my pistons I'd pull the pins to make sure everything is legit.
where is a good place to buy spiralocs for SRP slugs?
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1991civicsi

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Re: SRP D16Z6 damaged valve reliefs
« Reply #12 on: March 29, 2009, 06:08:10 PM »
I just sent them an email asking how much are they shipped to my door.
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1991civicsi

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Re: SRP D16Z6 damaged valve reliefs
« Reply #13 on: March 29, 2009, 06:15:48 PM »
Top ring to land gap is .038mm = .0015
 SRP specs should be btwn. .0015 and .003, so, thats within specs.

This piston looks like it is cut deep into the top land.
Im going to have my machine shop look at it tomorrow.



Thanks JD.  8)
« Last Edit: March 29, 2009, 10:38:21 PM by 1991civicsi »
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