Anyone ever have any problems with Yella Terra Rockers?
09-11-2009, 06:56 PM
#43
Melting Slicks
Member Since: Jan 2009
Location: Easley/Anderson South Carolina
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dont run the scorpions. They are worse than YT and you WILL have repeated failures. The problem with the YT seems to be a material issue during the initial casting process of the blanks for the rocker. Most failures have been happening in the 3500-7000 miles, but there was one that had like 1200 miles.
I have been running my car fairly aggressively to see if mine will fail again. So far all good.
I have been running my car fairly aggressively to see if mine will fail again. So far all good.
09-11-2009, 08:10 PM
#44
Racer
Thread Starter
Well today she called to tell me to send them all back - so thats-a what I'm doin. Fingers crossed it doesn't happen again.
I was a little disappointed though - I thought I dropped a valve or something from the initial noise - I was getting ready to build a stroker. Lol.
I guess I won't truly know there's no other damage until I start the pig back up and make some noise.
I was a little disappointed though - I thought I dropped a valve or something from the initial noise - I was getting ready to build a stroker. Lol.
I guess I won't truly know there's no other damage until I start the pig back up and make some noise.
09-11-2009, 08:30 PM
#46
Racer
Thread Starter
I bought mine from Mike in May I believe but he had them in stock...and he gets his stock from Mako...who has them shipped from AUS...sooo it's not like they were made the week before I got them. I don't even have the box...
09-11-2009, 09:38 PM
#47
Le Mans Master
Right around when I got mine...
09-11-2009, 09:58 PM
#48
Safety Car
I've been running my YT 1.8's since Feb 08. This is in a track car that sees about 20 days per year and several thousand miles to and from distant tracks. No problems, sounds like this was the bad batch syndrom.
09-12-2009, 12:55 AM
#49
Racer
Thread Starter
"Bad batch" is the catch all excuse for soemthing like this...I mean, how can you even tell what "batch" they're from? If I heard from a YT employee (not Mako) that there were materials issues (and an actual manufacture run date) then I'd be more apt to believe it - but until then, I'm starting to question the product. The only problem is - I can't seem to find a better alternative.
Consequently, by the way, my GTO had YT rockers (for L92 heads which have even more geometrical issues and odd stresses than these bad boys do) and has about 10k on them going strong so I haven't lost complete faith yet - I'm in limbo...
Consequently, by the way, my GTO had YT rockers (for L92 heads which have even more geometrical issues and odd stresses than these bad boys do) and has about 10k on them going strong so I haven't lost complete faith yet - I'm in limbo...
09-12-2009, 08:44 AM
#50
Burning Brakes
Bought from on line vendor TickPerformance. He buys from distributor and offered no help. Guess who I wont be buying from again and I wouldn't recommend.
09-12-2009, 08:51 AM
#51
Team Owner
"Bad batch" is the catch all excuse for soemthing like this...I mean, how can you even tell what "batch" they're from? If I heard from a YT employee (not Mako) that there were materials issues (and an actual manufacture run date) then I'd be more apt to believe it - but until then, I'm starting to question the product. The only problem is - I can't seem to find a better alternative.
Consequently, by the way, my GTO had YT rockers (for L92 heads which have even more geometrical issues and odd stresses than these bad boys do) and has about 10k on them going strong so I haven't lost complete faith yet - I'm in limbo...
Consequently, by the way, my GTO had YT rockers (for L92 heads which have even more geometrical issues and odd stresses than these bad boys do) and has about 10k on them going strong so I haven't lost complete faith yet - I'm in limbo...
It would be great is we could get someone from YT to weigh in on this. I think they have a great product and will take care of things once they realize the issues.
Last edited by vettenuts; 09-12-2009 at 08:54 AM.
09-12-2009, 09:18 AM
#52
Melting Slicks
Member Since: Jan 2009
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In my thread on ls1gto, I had mentioned that on the Saturday after the failure, I had an engineer from Austraila call me. I think I mentioned it here too. He had told me that it could only be a material issue and that is why he wanted all of them back.
I bought mine in april 09. I think all the failures have been the 1.7 rockers. I have not heard of the 1.8's breaking, yet.
I bought mine in april 09. I think all the failures have been the 1.7 rockers. I have not heard of the 1.8's breaking, yet.
09-12-2009, 01:55 PM
#55
Le Mans Master
1.7 YT's. I made a thread back in April about some issues I had with HS modded stock rockers here:
http://forums.corvetteforum.com/c5-t...mage-pics.html
While my car was apart I decided to replace the damaged HS rockers with these YT's due to their stellar reputation. Now I find that these, which it turns out I did purchase in April, are breaking WORSE than the HS rockers they replaced. I have not had a problem with my YT's to date, however I have a ridiculous amount of money tied up in my motor and I wouldn't be too happy if a rocker was to fail and damage it.
Eric, I just noticed you live pretty close to me! I'm in Northville.
http://forums.corvetteforum.com/c5-t...mage-pics.html
While my car was apart I decided to replace the damaged HS rockers with these YT's due to their stellar reputation. Now I find that these, which it turns out I did purchase in April, are breaking WORSE than the HS rockers they replaced. I have not had a problem with my YT's to date, however I have a ridiculous amount of money tied up in my motor and I wouldn't be too happy if a rocker was to fail and damage it.
Eric, I just noticed you live pretty close to me! I'm in Northville.
09-12-2009, 03:57 PM
#56
Drifting
Member Since: Aug 2003
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09-13-2009, 09:13 PM
#57
Le Mans Master
Hi Guys,
Our LS rockers have been selling for many years globally and it is rare and a surprise that some sets have failed.
We stand by our products and if anyone breaks an arm within 12 months or 10,000 miles of purchase the set will be replaced with a new SET and the old ones will need to be sent back to our Meridian MS office for thorough inspection and analysis.
With any broken rocker set we will require:
Date of Purchase
Who you purchased from
Cam spec
Type of Spring Rates
Installed spring pressure and expected open spring pressures (if known)
For people who question our quality ...fyi ...ALL The YT LS1 LS2 LS3 and L67 and LS7 rockers are all designed and made in Australia under strict quality ISO 9001 QA control.
Our products use full compliment Torrington needle roller bearings, All our aircraft grade alloy comes from the USA from the same material/ same mills that many of the top shaft race rocker manufacturers source from.
We have over the past three years have sold 000's of YT6645s and this is a vary rare instance.
Ive already spoken to a few of you guys on other forums and feel free to contact either our VP USA Doug Smith ( doug.smith@makogrp.com)or email me directly (jim@yellaterra.com.au) on any issues with our products.
Once again thank you for supporting Yella Terra and using our products.
Jim Petrakis
Yella Terra Australia
Our LS rockers have been selling for many years globally and it is rare and a surprise that some sets have failed.
We stand by our products and if anyone breaks an arm within 12 months or 10,000 miles of purchase the set will be replaced with a new SET and the old ones will need to be sent back to our Meridian MS office for thorough inspection and analysis.
With any broken rocker set we will require:
Date of Purchase
Who you purchased from
Cam spec
Type of Spring Rates
Installed spring pressure and expected open spring pressures (if known)
For people who question our quality ...fyi ...ALL The YT LS1 LS2 LS3 and L67 and LS7 rockers are all designed and made in Australia under strict quality ISO 9001 QA control.
Our products use full compliment Torrington needle roller bearings, All our aircraft grade alloy comes from the USA from the same material/ same mills that many of the top shaft race rocker manufacturers source from.
We have over the past three years have sold 000's of YT6645s and this is a vary rare instance.
Ive already spoken to a few of you guys on other forums and feel free to contact either our VP USA Doug Smith ( doug.smith@makogrp.com)or email me directly (jim@yellaterra.com.au) on any issues with our products.
Once again thank you for supporting Yella Terra and using our products.
Jim Petrakis
Yella Terra Australia
I do appreciate it, however I live in Michigan and I might drive my car 5 months out of the year at a maximum of 4,000 miles. This summer has been an exception with everything going on I *might* have 1500 miles on them. I purchased these rockers new in April before taking the car out of storage. It will be going back in to storage in the next month and a half, and by the time I take it out again your warranty will have expired. Given that mine were purchased and installed right around the same time that the other problematic rockers were installed/purchased, my confidence is shaken and I'm not sure I wish to continue running them.
09-13-2009, 10:55 PM
#59
Racer
Thread Starter
Hi Guys,
Our LS rockers have been selling for many years globally and it is rare and a surprise that some sets have failed.
We stand by our products and if anyone breaks an arm within 12 months or 10,000 miles of purchase the set will be replaced with a new SET and the old ones will need to be sent back to our Meridian MS office for thorough inspection and analysis.
With any broken rocker set we will require:
Date of Purchase
Who you purchased from
Cam spec
Type of Spring Rates
Installed spring pressure and expected open spring pressures (if known)
For people who question our quality ...fyi ...ALL The YT LS1 LS2 LS3 and L67 and LS7 rockers are all designed and made in Australia under strict quality ISO 9001 QA control.
Our products use full compliment Torrington needle roller bearings, All our aircraft grade alloy comes from the USA from the same material/ same mills that many of the top shaft race rocker manufacturers source from.
We have over the past three years have sold 000's of YT6645s and this is a vary rare instance.
Ive already spoken to a few of you guys on other forums and feel free to contact either our VP USA Doug Smith ( doug.smith@makogrp.com)or email me directly (jim@yellaterra.com.au) on any issues with our products.
Once again thank you for supporting Yella Terra and using our products.
Jim Petrakis
Yella Terra Australia
Our LS rockers have been selling for many years globally and it is rare and a surprise that some sets have failed.
We stand by our products and if anyone breaks an arm within 12 months or 10,000 miles of purchase the set will be replaced with a new SET and the old ones will need to be sent back to our Meridian MS office for thorough inspection and analysis.
With any broken rocker set we will require:
Date of Purchase
Who you purchased from
Cam spec
Type of Spring Rates
Installed spring pressure and expected open spring pressures (if known)
For people who question our quality ...fyi ...ALL The YT LS1 LS2 LS3 and L67 and LS7 rockers are all designed and made in Australia under strict quality ISO 9001 QA control.
Our products use full compliment Torrington needle roller bearings, All our aircraft grade alloy comes from the USA from the same material/ same mills that many of the top shaft race rocker manufacturers source from.
We have over the past three years have sold 000's of YT6645s and this is a vary rare instance.
Ive already spoken to a few of you guys on other forums and feel free to contact either our VP USA Doug Smith ( doug.smith@makogrp.com)or email me directly (jim@yellaterra.com.au) on any issues with our products.
Once again thank you for supporting Yella Terra and using our products.
Jim Petrakis
Yella Terra Australia
Well, Jim, that's great and all, and trust me I do apprecaite you posting in the thread, but they never asked me for the set back. They wanted to replace the broken pair. Furthermore, they never asked for milage or what cam was used.
I could see you wanting this information - it'd be great to have all that stuff on file - but the Mako folks never even inquired. I called them to see if they'd replace the entire set. They called me back in a day saying they would.
THey are in an 8" cube box on the way to MS as of yesterday. Hopefully this gets sorted out.
I will say this for your design...they may have broken, but the bearings stayed in tact and didn't spew rollers all over my valvetrain so that's pretty cool
09-13-2009, 10:58 PM
#60
Racer
Thread Starter
I do appreciate it, however I live in Michigan and I might drive my car 5 months out of the year at a maximum of 4,000 miles. This summer has been an exception with everything going on I *might* have 1500 miles on them. I purchased these rockers new in April before taking the car out of storage. It will be going back in to storage in the next month and a half, and by the time I take it out again your warranty will have expired. Given that mine were purchased and installed right around the same time that the other problematic rockers were installed/purchased, my confidence is shaken and I'm not sure I wish to continue running them.
I know i know - pay to play - I'm juuuust sayin...