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Old 12-03-2003, 07:56 PM   #1
rsherrard
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Location: Redmond WA
Default Rings Not Seating?

I recently had a 422 built by one of our forum sponsors. After getting the motor installed and up and running, weíve been following a strict break-in regiment that has consists of or will of:

1. Using a non-synthetic oil for the first 4,000 miles
2. Changing the oil at 500 miles and 1,000 miles
3. No WOT / Dyno pulls until roughly 1,000 miles has been reached.

Currently my new motor has about 1,100 miles on the clockÖ with what we feel is excusive oil consumption. Right now the car is burning about 1 quart every 130(ish) miles. The builder notified us, that this appears to be high although maybe more time is needed in order for the rings to seat? Currently Iím logging all oil consumption, in the event the builder needs proof this is in fact happening. The builder has also suggested we make sure the car isnít was washing the cylinders down with fuel, creating ring seating issues. Weíve checked this, and this isnít the case. Another suggestion was to check my PCV system, which at this point thereís noticeable crank case pressure occurring. At this point, weíll continue to monitor the situation however she doesnít appear to be letting up. Has anyone else experienced similar behaviors on their aftermarket motor? Iím asking because we really donít have a baseline, as to what we should expect.

Rob
robsh@microsoft.com
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Old 12-03-2003, 08:06 PM   #2
ZO6Les
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Default Re: Rings Not Seating? (rsherrard)

That oil consumption is excessive IMO. I had my 383 built locally, changed the oil at 500, 1000, and 2000 and miles. Used 5W30 dino oil for first 1K miles, 20W50 on the last change (still dino) and will switch to synthetic after 5K miles. I have never yet had to add oil, including a 1K round trip weekend to Florida, and last weekend a trip to lil'Talledega when I ran HARD at WOT.

Are you varying the RPM's a lot (recommended)?? Get on it medium hard beween 1K and 5K RPM's and see if you can get them to seat. Don't switch to synthetic until/unless you get this fixed, otherwise it will always be an oil burner.

Les
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Old 12-03-2003, 08:10 PM   #3
rsherrard
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Default Re: Rings Not Seating? (ZO6Les)

We've varried the RPM's quite a bit.. usally keeping them around 2k-5k. It wasn't until I had 1k on the clock that we even went 60% trottle on the car. At 1 quart per every 130ish miles, that's not a street-able car.
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Old 12-03-2003, 08:49 PM   #4
69
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Default Re: Rings Not Seating? (rsherrard)

I would take oil samples every 200 miles to confirm/denie the fuel washing/consumpsion issue.
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Old 12-03-2003, 08:54 PM   #5
rsherrard
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Default Re: Rings Not Seating? (rsherrard)

Has anyone had to modify their PCV before... given this application?

Rob
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Old 12-03-2003, 09:39 PM   #6
LS1JAY
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Default Re: Rings Not Seating? (rsherrard)

That's way too much! I had mine re-built by Mike Norris and have put almost 5,000 miles on the motor as of now and I have no oil consumption whatsoever. It never used any even when it was "breaking in". I had it re-built because of oil consumption and smoking @ WOT. It was using 1 qt every 1,000 miles or less (miles) depending on driving habits. Do you know what kind of rings were used?

BTW, He put the LS6 PCV valley in mine.


[Modified by LS1JAY, 2:42 AM 12/4/2003]


[Modified by LS1JAY, 2:43 AM 12/4/2003]
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Old 12-03-2003, 09:55 PM   #7
rsherrard
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Default Re: Rings Not Seating? (LS1JAY)

they are molly rings... w/ a dry sleeve.
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Old 12-04-2003, 11:08 AM   #8
LS1JAY
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Default Re: Rings Not Seating? (rsherrard)

I have the molly rings as well. I wonder if you have a cracked ring somehow? Somethings just not right for it to use 1qt every 130 miles.
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Old 12-04-2003, 11:24 AM   #9
carpe dm
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Default Re: Rings Not Seating? (rsherrard)

Rings may take 5 or 6K to seat, but your useage is way beyond expected. Fix the pressure problem, monitor oil use and then, if it does not improve, demand a rebuild! Bummer! :skep: :leaving:
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Old 12-04-2003, 12:13 PM   #10
Mr. Jones
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Default Re: Rings Not Seating? (carpe dm)

sound like trouble to me. I would check everything over before making a stink with the vendor (pvc, leaks, contamination in water or a fuel wash)
next do a leak down check of the cylinders this will tell you the condition of ring seat. if you have a high percentage of leakage and its not valve related bring it back.
my experience with molly coated rings is 500 mi. their ready to go.
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Old 12-04-2003, 12:33 PM   #11
rsherrard
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Default Re: Rings Not Seating? (Mr. Jones)

for sure... we're sitting tight right now and documenting everything we can.

Rob
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Old 12-04-2003, 02:06 PM   #12
LS1JAY
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Default Re: Rings Not Seating? (rsherrard)

"my experience with molly coated rings is 500 mi. their ready to go."

Exactly! I Mike dyno tuned my car @ Norris Motorsports @ 500 miles!
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Old 12-04-2003, 02:06 PM
 
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