Bryan,
Received my new SBT engine today. A full week ahead of delivery schedule ! I thank your collegues in the shop for working so hard to "make it happen" !
Unfortunately, I am still waiting on another vendor for support parts so I am in no rush to install yet.
My question today is this:::::
I was going over the RV timing instructions in the OEM manual as well as the SBT installation guide. (Your guide is much more explicite)
Both installation instructions refer to the 1996 HX 720 engine with a RV opening of 147'. My particular unit came with a RV that has a 159' open duration. I matched the RV with the template in the OEM manual to verify as well as verification through SBT when I ordered a new one. If I go with the 147' spec.,,, the marks dont get very close, even if I flip the valve over.
Surprisingly, if I go with the 159' duration and mark the cases accordingly it matches right up only when I flip it over to the opposite side of what it was originally installed(at the factory).
The paint on the RV cover plate bolts do not indicate this cover has ever been R&R'd.
Could the factory have installed this wrong ?
I dont think this would have caused my front piston to fry but it seems awful strange. It always ran and idled smooth.
Should I go with the 159' spec. and the closest match of my marks following the exact SBT instructions but substituting the 147' with my 159' ?
David
"On the Tennessee River"
Received my new SBT engine today. A full week ahead of delivery schedule ! I thank your collegues in the shop for working so hard to "make it happen" !
Unfortunately, I am still waiting on another vendor for support parts so I am in no rush to install yet.
My question today is this:::::
I was going over the RV timing instructions in the OEM manual as well as the SBT installation guide. (Your guide is much more explicite)
Both installation instructions refer to the 1996 HX 720 engine with a RV opening of 147'. My particular unit came with a RV that has a 159' open duration. I matched the RV with the template in the OEM manual to verify as well as verification through SBT when I ordered a new one. If I go with the 147' spec.,,, the marks dont get very close, even if I flip the valve over.
Surprisingly, if I go with the 159' duration and mark the cases accordingly it matches right up only when I flip it over to the opposite side of what it was originally installed(at the factory).
The paint on the RV cover plate bolts do not indicate this cover has ever been R&R'd.
Could the factory have installed this wrong ?
I dont think this would have caused my front piston to fry but it seems awful strange. It always ran and idled smooth.
Should I go with the 159' spec. and the closest match of my marks following the exact SBT instructions but substituting the 147' with my 159' ?
David
"On the Tennessee River"
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