Another Broken L92 YT
06-28-2012, 01:18 PM
#1
Another Broken L92 YT This is the second YT rocker that has broken on me. The first one was several years ago on this same engine. I took them at their word that there was a bad run that they had corrected. They were very responsive and sent me another set all the way from Australia and I had it 4 days later.
This morning, I was pulling the car out of the garage this morning. I got about 50 yards from the house and I heard a rattle and then a dead miss. I pulled the car over immediately. This afternoon when I got home I pulled the valve cover abd found this:
The first time, I had to pull the head to get all the pieces out. Luckily, I'm fortunate that the piece that broke of is one piece and was sitting next to the spring.
I'm running PAC 1521's with .643 lift cam 234 degree cam. The rocker geometry is properly setup.
I was willing to give them the benefit of the doubt the first time but not twice. This is a street car with the rev limiter set at 6800 and it never sees that.
Needless to say, YT's won't be going back in.
Just an FYI.
This morning, I was pulling the car out of the garage this morning. I got about 50 yards from the house and I heard a rattle and then a dead miss. I pulled the car over immediately. This afternoon when I got home I pulled the valve cover abd found this:
The first time, I had to pull the head to get all the pieces out. Luckily, I'm fortunate that the piece that broke of is one piece and was sitting next to the spring.
I'm running PAC 1521's with .643 lift cam 234 degree cam. The rocker geometry is properly setup.
I was willing to give them the benefit of the doubt the first time but not twice. This is a street car with the rev limiter set at 6800 and it never sees that.
Needless to say, YT's won't be going back in.
Just an FYI.
06-28-2012, 04:00 PM
#3
Someone on CF found the thread from the previous breakage. 6/26/2010
Holy Crap! I didn't even realize that. I guess these are two year items.
Shawn Miller is talking with Crane about a new rocker they haven't even introduced yet. That's one possiblity or T&D is another. Jesel is just way overkill for the Cruiser.
Holy Crap! I didn't even realize that. I guess these are two year items.
Shawn Miller is talking with Crane about a new rocker they haven't even introduced yet. That's one possiblity or T&D is another. Jesel is just way overkill for the Cruiser.
06-28-2012, 07:59 PM
#4
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Someone on CF found the thread from the previous breakage. 6/26/2010
Holy Crap! I didn't even realize that. I guess these are two year items.
Shawn Miller is talking with Crane about a new rocker they haven't even introduced yet. That's one possiblity or T&D is another. Jesel is just way overkill for the Cruiser.
Holy Crap! I didn't even realize that. I guess these are two year items.
Shawn Miller is talking with Crane about a new rocker they haven't even introduced yet. That's one possiblity or T&D is another. Jesel is just way overkill for the Cruiser.
I went with T&D on my 427 engine build..... the engine builder has had good results with these. We did have some clearance issues with the valve covers. The best valve covers that provided the most clearance for the T&D shaft rockers were the Katech brand, these worked with minimal modification. Just keep that in mind if you go with the T&D.
06-28-2012, 09:17 PM
#6
Someone on CF found the thread from the previous breakage. 6/26/2010
Holy Crap! I didn't even realize that. I guess these are two year items.
Shawn Miller is talking with Crane about a new rocker they haven't even introduced yet. That's one possiblity or T&D is another. Jesel is just way overkill for the Cruiser.
Holy Crap! I didn't even realize that. I guess these are two year items.
Shawn Miller is talking with Crane about a new rocker they haven't even introduced yet. That's one possiblity or T&D is another. Jesel is just way overkill for the Cruiser.
. You know that experimental Crane stuff is marginal at best 
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06-29-2012, 10:50 AM
#12
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Running rebuilt stockers here. I have just about the same cam specs and the same springs. 7K on the limiter all the time. No problem so far..
I ran the Harland Sharps on a cath. build. They left little sprial shavings off the trunnion area on my engine. They never broke .
I ran the Harland Sharps on a cath. build. They left little sprial shavings off the trunnion area on my engine. They never broke .
07-03-2012, 06:04 PM
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07-09-2012, 11:44 AM
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Kevin , we got a box here full of broken YT's, most of them look like yours that broke.
What we do on 95% of our builds, is the stock rockers with the Comp trunion upgrade. Really a nice setup, and definately low cost involved.
What we do on 95% of our builds, is the stock rockers with the Comp trunion upgrade. Really a nice setup, and definately low cost involved.
