07-31-2018, 09:46 AM | #29 | |
Drives: 2015 Z/28 Black Join Date: Nov 2016
Location: Los Angeles
Posts: 341
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2015 Black Z/28
70 Chevelle SS396 01 M3, 88 Land Cruiser |
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08-06-2018, 11:07 PM | #30 | |
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08-07-2018, 07:00 AM | #31 | |
Drives: '94 Z28+ '15 Z/28 Join Date: Jun 2009
Location: Cheektowaga, NY
Posts: 1,304
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Also there have been a few Z/28 engine failures and a few guys that have claimed to have measured Z/28 heads and found them out of spec. My car has 5700 miles and has been tracked 3 times. No issues here.
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1973 Mach 1, 351C cruiser
'15 Z/28 Red Hot, A/C 1980 Z28- resto-mod project 1979 Y84 Trans Am 1986 IROC-Z |
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08-08-2018, 07:45 AM | #32 |
Drives: 2014 2SS blue Join Date: Jun 2016
Location: Socal
Posts: 689
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If I were planning to keep a Z28 "forever", I'd stock up on the carbon rotors.
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08-08-2018, 09:08 AM | #33 |
Drives: 1969 Z/28 + 2015 Z/28 Join Date: Aug 2009
Location: Pittsburgh Area, Pa
Posts: 538
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If you are not going to track the car the original rotors will last just about "forever".
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You know you are having fun when you are getting 3.4 mpg !!
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08-08-2018, 06:01 PM | #34 |
Account Suspended
Drives: Camaro V6 Join Date: Oct 2016
Location: U.S.
Posts: 1,722
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08-08-2018, 06:22 PM | #35 |
Drives: '15 Z/28 #0270 Join Date: Jan 2017
Location: San Pablo, CA
Posts: 85
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I read on here that the caliper bolts are one time use only. What do the guys who switch back and forth between CCM and steel rotors do? New bolts each time?
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08-08-2018, 11:29 PM | #36 |
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2015 Camaro Z/28 Black
Sold: 2010 Camaro 1SS/RS |
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08-09-2018, 12:20 AM | #37 |
@MrRaZ28
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The answers always vary. Most just loctite and go a certain torque. I bought some for when I swapped mine, but the part number for the rears gave me the wrong bolts and I had no choice BUT to loctite them. So far no issues. I have checked and rechecked, and so far they haven't backed out. I don't like it but until the dealer can figure out why the part number didn't match up this is what I've got. I'm not tracking for a while so I should be okay.
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08-09-2018, 06:13 AM | #38 |
Drives: 2015 Z/28, 2007 HHR Join Date: Jan 2014
Location: Republic of Texas
Posts: 1,148
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Straight from the service manual. I post it every time it is brought up.
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08-10-2018, 01:02 AM | #39 |
Drives: 2015 Z/28 Black Join Date: Nov 2016
Location: Los Angeles
Posts: 341
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Here is an update to my Gold Plugs during oil change. I just did my 4th oil change with approx. 3500 street miles on this oil in the Z/28. Any minuscule magnetic particles have decreased roughly 75% since the last oil change. it is kinda hard to see because of the shadow, but, you can see on the paper that cleaning off the magnets yielded much less material. It seems the engine is fully broken in and the motor is running great ! So far, so good !
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2015 Black Z/28
70 Chevelle SS396 01 M3, 88 Land Cruiser |
08-10-2018, 03:42 PM | #40 | |
Drives: corvette Join Date: Mar 2015
Location: Nevada
Posts: 122
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Mileage doesn’t matter. The way you use you car doesn’t matter. Some heads are clearly more “out if spec than others”. Can you drive your car 30, 40 even 100k miles and not have a problem? Yes. On the other hand 427 motors have dropped valves and destroyed engines with less than 500 miles on the car. Food for thought. My neighbor has a 07 Z06. He treats that his car like absolutel sh!t. It’s absolutely trashed. Never does routine maintenance etc. has 50k something miles on it with no problems. Mine Z06 is an 09 with Les than 6k miles on it and maintainined to the absolute highest standards. My car is absolutely flawless not a swirl mark on it. No track, no roll ons, no drag racing never beat on. Oil always up to temp before going over 2500 rpm bla bla. Anyway dropped valve less than 6k miles on it. Your “serious noise” claim is false period. Some people are in total denial about this issue. Call Able chevy and ask them how many 427s they have replaced because of dropped valves. Yes Z/28s are included it’s not just Z06s. That’s just one dealership. Call American Heritage Performance and ask them the same question. Can you drive your car with the valves being out of spec? Yes. For how long it’s hard to say, but to say there is no problem is ridiculous. Way too many documented engine failures because of dropped valves. Lastly I also would love to believe Chevy “fixed” the head issue. Just haven’t seen any proof of this. Anyway back to working overtime so I can pay for my new LS7 which dropped a valve and destroy my motor. |
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08-10-2018, 04:29 PM | #41 | |
@MrRaZ28
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A lot can happen in 11 years of engine building... especially since this was prevalent 7-10 years ago.. Unlike Nissan with their SMOD and transmissions and screwing their customer base over with it, I would LIKE to think GM did it right with this. Either way, I have an extended warranty and if something blows on the engine $200 bucks and I don't worry about it. And if nothing happens by the time I'm ready to put different heads on for my build, I'm okay with that too. |
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