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#21
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Re: Picked up a 2015 Z/28
No it was never "fixed". GM has never conceded to the issues. There is a lot of incorrect and conflicting info, even amongst engine shops.
Wegner Motor Sports found, that the coating on the valves as spec'ed by GM from Del West its way too course and wears the valve guides in short order. So we fix the worn guides and send the valves to be stripped and re coated with a non abrasive coating. We have not seen a single valve guide related issue, since, on our custom engines. We spin the LS7s to 7200 rpm. This is really an awesome engineered engine considering the basic design goes back to 1955 for GM. Here I'm testing a line lock / Barker Button in the parking lot prior to delivery of a 700hp Stage III NicKey Z28. <object width="425" height="350"> <param name="movie" value="https://www.youtube.com/v/5L3XQ4tIIGg"></param> <param name="wmode" value="transparent"></param> <embed src="https://www.youtube.com/v/5L3XQ4tIIGg" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"> </embed></object> |
#22
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Re: Picked up a 2015 Z/28
Figures Stefano and his crew would be on top of this issue! [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]
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Sam... |
#23
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Re: Picked up a 2015 Z/28
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Stefano</div><div class="ubbcode-body">No it was never "fixed". GM has never conceded to the issues. There is a lot of incorrect and conflicting info, even amongst engine shops.
Wegner Motor Sports found, that the coating on the valves as spec'ed by GM from Del West its way too course and wears the valve guides in short order. So we fix the worn guides and send the valves to be stripped and re coated with a non abrasive coating. We have not seen a single valve guide related issue, since, on our custom engines. We spin the LS7s to 7200 rpm. This is really an awesome engineered engine considering the basic design goes back to 1955 for GM. Here I'm testing a line lock / Barker Button in the parking lot prior to delivery of a 700hp Stage III NicKey Z28. <object width="425" height="350"> <param name="movie" value="https://www.youtube.com/v/5L3XQ4tIIGg"></param> <param name="wmode" value="transparent"></param> <embed src="https://www.youtube.com/v/5L3XQ4tIIGg" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"> </embed></object> </div></div> Wow, quite a remark concerning GM. Interesting as I'm not aware of this and we and several that I know own a 2014/15 Z/28. When did this issue come about, with the LS7 in Z/28 or when still being used in C6 Z06's. Need to review but had not heard of this either on Camaro5 Z/28 forum and quite a lot of those guys are tracking their cars.
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68,69&2015 Z/28's 69 L78 Nova Purchased new 32k miles 69 Restored Nova L34 Father/Son Few Corvettes Our 68 Z/28 Build thread- http://www.camaros.net/forums/showthread.php?t=182584 |
#24
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Re: Picked up a 2015 Z/28
More shit for me to worry about!
Buddy
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69 camaro Z-28 burnished brown X-77 bought 1978 70 camaro Z28 forest green M40 black vinyl roof PROJECT 99 camaro SS Hugger Orange 6speed no t-tops 1 of 54 11 cts-v black diamond edition wagon 556hp GONE 15 camaro Z/28 white AC brand new |
#25
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Re: Picked up a 2015 Z/28
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: x77-69z28</div><div class="ubbcode-body">More shit for me to worry about!
Buddy </div></div> No worries Buddy! Did you check this out? http://www.camaro5.com/forums/showthread.php?t=479467
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68,69&2015 Z/28's 69 L78 Nova Purchased new 32k miles 69 Restored Nova L34 Father/Son Few Corvettes Our 68 Z/28 Build thread- http://www.camaros.net/forums/showthread.php?t=182584 |
#26
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Re: Picked up a 2015 Z/28
I did Chick. One guy has 50k on his. Now I can sleep tonight. I have 603 miles on mine. At this rate, it will take me almost a underdog years to hit 50k miles!
Buddy
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69 camaro Z-28 burnished brown X-77 bought 1978 70 camaro Z28 forest green M40 black vinyl roof PROJECT 99 camaro SS Hugger Orange 6speed no t-tops 1 of 54 11 cts-v black diamond edition wagon 556hp GONE 15 camaro Z/28 white AC brand new |
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