propain

Since we keep seeing threads pop up now with more and more people inspecting their guides I think it would be a good idea to get a grasp of how many are coming back with in spec guides and from which years.

If you have inspected your guides and they have come back in spec please reply with the year of your Z06 and the miles at inspection. You can also attach a spec sheet of the measurements if you have one and cite who did the inspection. Hopefully we can use this data to get a better idea of the percentage of problems out there.

This is not a thread to debate the valve drop issues, or how to fix it. This is not a thread for cars who have found guide wear. This is not a thread for drama. Please try to keep it as clean as possible and on topic.

This is for Z06's without any head work done. Mods other than head work are fine.


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Total Count Of New Submissions: 25

Highest miles inspected and in spec: 88,000 miles

Check out the "Out Of Spec" Registry here: Out Of Spec Registry


Last update 10-29-14

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2006:

Vette @71: 2006 Z06. Inspected at 9,800 miles. All exhausts in spec. Intake #3 just under spec. Tests were done by Rick (RKT56). Mods: Intake, Headers , Exhaust, Tune.
MTIRC6Z: 2006 Z06. Inspected at 21,000 miles. All in spec. Did the work himself.
ConfusedGarage: 2006 Z06. Inspected at 17,000 miles. All in spec. WCCH Inspection. Spec Sheet
G Player: 2006 2LZ z06. Inspected at 37,900 miles. All in spec. Inspection done at dealership.
Flareside: 2006 Z06. Inspected at 9,100 miles, All in spec. Inspection done by not stated by whom.
Bonnetts02Vette: 2006 Z06, Inspected at 11,000 miles. All in spec. Shop done, not specified who.
Dale1990: 2006 Z06, Inspected at 35,000 miles. All in spec.
Cruzr6: 2006 Z06, Inspected at 31,000 miles. All in spec.
z76232: 2006 Z06, Inspected at 16,000 miles. Inspection done by Brooks Mobile Auto out of Surprise All in spec.



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2007:

Undy: 2007 Z06. Inspected at 88,000K miles and in spec. Did the work himself. Mods: headers, tune and a K&N
RFE-57 2007 Z06, Inspected at 17,000 miles all in spec. Did the work himself.
john_g_46 2007 Z06, Inspected at 16,000 miles all in spec. Did the work himself.
bjmsam 2007 Z06, Inspected at 62,000 miles all in spec. Inspected by Total Performance. Measurements
dwakeman 2007 Z06, Inspected at 14,000 miles. All in spec. Inspection done by American Heritage.

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2008:

Propain: 2008 Z06 3LZ. Inspected at 14,000 miles and in spec. I did the work myself.
Pkincy: 2008 Z06 , Inspected at 8,500 miles. All in spec, Inspection done by Abel.
JWINGO: 2008 Z06, Inspected at 19,000 miles. All in spec. Did the work himself.
ioutrun: 2008 Z06, Inspected at 38,000 miles. All in spec.
Kneel 8250: 2008 Z06, Inspected at 34,066 miles. All in spec. Inspected at "Corvette Mechanic at his shop".
Bluemagoo: 2008 Z06, Inspected at 20,000 miles. All in spec.
Zekedog: 2008 Z06 , Inspected at 37,000 miles. All in spec, Inspection done by Abel.
Johns67: 2008 Z06 , Inspected at 14,566 miles. All in spec.
insane motorsports: 2008 Z06 , Inspected at 13,000 miles. All in spec, Inspection done by GPI in Jacksonville AR.


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2011:

velasoraptor: 2011 Z06. Inspected at 20,500 miles. All in spec. Inspection done by not stated.

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2013:

forg0tmypen: 2013 Z06. Inspected at 5,000 miles. All in spec. Inspection done by member.

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propain

Reserved

Undy

Undy, PRC265's after 10K miles. All guides 0.0025" and in spec. Done myself.

propain

I guess I should have been more clear. Stock Z06's with no head work done. Thanks though.

Undy

Ahhh...

My stock heads after 88K miles had EVERY exhaust guide within spec. A few intakes were getting close though.

propain

Perfect. Ill add that to the list. What year is your Z06? Thanks!

crAzy

2006. 36K miles. No test done. Never had a problem.

LFZ

LOL! You failed at this thread...

Vette @ 71

06 with 9800 miles. All exhausts well within in spec. Worst measurement was #3 intake just under spec (0.0035) using Richie Rich's correlation factor ( wiggle measurement/2 - 0.0005). Tests were done by Rick (RKT56) a forum supporter..

Intake, Headers , Exhaust, Tune..

Undy

Give him a break, it took me two tries...

Undy

2007. It had headers, tune and a K&N for it's whole life up to 88K.

crAzy

No I just trolled you guys

propain

MTIRC6Z

'06, 21,000miles, cam for 18,000 miles, did the work myself, intake AND exhaust valves all virtually the same at .002 to .003"

Cheers, Paul.

G Player

06 2lz all stock oem. Guides checked at 37,900 mi. by local Chevy dealer. All registered between 0.002 and 0.003.

ConfusedGarage

2006 Z06
Guides all in spec - measured at 17,000 miles by WCCH prior to work done.

Katech stage 1 done after just a couple thousand miles, so its been 500+ rhwp cammed since almost new.

Nearly 90 drag passes, 30+ high speed runs, daily driver on factory fill mobil 1. On the limiter all the time, daily driven with temps in the 30s here at times in the north at the end of season.

Rock36

Will there be any attempt to tease out why these cars didn't have worn guides vs others with worn guides? Such as oil used? Racing habits? Fuel types used (91 vs 93)? Geographic location (i.e. cold vs. warm climates or fuel availability)?

I would hope we aim for constructive data here, and use this opportunity to potentially identify cars that might be at risk for valve guide wear in the future. Perhaps if we are lucky, it might be possible to identify a common thread between cars with guide wear and those without.

erikszr1

cool

Flareside

2006 Z06, 9100 miles, all guides in spec. All stock, all fluids standard GM fill. Car just runs like a beast

Unreal

Great idea and I agree this should be done, but why is vette@71 on the list if he did have one out of spec?