Snow Falling Time For A Winter Project
12-20-2011 | 04:34 PM
#213
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Joined: Mar 2010
Posts: 1,988
Likes: 1
From: CT, FL
There's a reason Merlin(WP) doesn't make the super-tall decks anymore...
12-20-2011 | 04:37 PM
#214
VIP Member
Joined: Mar 2010
Posts: 1,988
Likes: 1
From: CT, FL
The problem is the solid lifters.why they put a race valve setup in that motor is moronic....they shift, they run great, except the maintenance....converting to hydraulic...but that's why the new QOHC make everything obsolete...
12-20-2011 | 05:11 PM
#216
Registered
Joined: Aug 2003
Posts: 6,679
Likes: 3
From: At the office.
As mentioned Frank, it's the valve train in the 1075's that make them such a maintenance nightmare. While mine have similar components, I have a lighter double spring setup that runs lighter seat pressures, so I can get away with a little longer time between top end tear downs. At the end of the day it's always a crap shoot when you're going to spit a lifter, spring, valve, etc with mechanical lift cams, so you never know. It's a lot cheaped to do preventative top end tear downs to be safe. I'm going to do my top ends before the boat goes back in the water...
The bottom ends can last hundreds of hours, or go 10... It all depends on your parts, how well they were put together, and how they are maintained/treated. Obviously the more power they make (not how much they are cabable of making) can be a huge determining factor of have long the bottom ends will last. A bottom end that's capable of handling 1200 but never sees any boost or high RPMs could last a lot longer than a lower output engine that's constantly at 5000+ RPMs and getting hammered... So there are a lot of factors in how long engines will go between complete rebuilds.
Btw, yours were built by a decent builder and babied for a lot of years, so its no suprise they lived to see so many hours.
The bottom ends can last hundreds of hours, or go 10... It all depends on your parts, how well they were put together, and how they are maintained/treated. Obviously the more power they make (not how much they are cabable of making) can be a huge determining factor of have long the bottom ends will last. A bottom end that's capable of handling 1200 but never sees any boost or high RPMs could last a lot longer than a lower output engine that's constantly at 5000+ RPMs and getting hammered... So there are a lot of factors in how long engines will go between complete rebuilds.
Btw, yours were built by a decent builder and babied for a lot of years, so its no suprise they lived to see so many hours.
12-20-2011 | 05:14 PM
#217
Registered
Joined: Jul 2009
Posts: 8,527
Likes: 706
From: Taunton Ma
As mentioned Frank, it's the valve train in the 1075's that make them such a maintenance nightmare. While mine have similar components, I have a lighter double spring setup that runs lighter seat pressures, so I can get away with a little longer time between top end tear downs. At the end of the day it's always a crap shoot when you're going to spit a lifter, spring, valve, etc with mechanical lift cams, so you never know. It's a lot cheaped to do preventative top end tear downs to be safe. I'm going to do my top ends before the boat goes back in the water...
The bottom ends can last hundreds of hours, or go 10... It all depends on your parts, how well they were put together, and how they are maintained/treated. Obviously the more power they make (not how much they are cabable of making) can be a huge determining factor of have long the bottom ends will last. A bottom end that's capable of handling 1200 but never sees any boost or high RPMs could last a lot longer than a lower output engine that's constantly at 5000+ RPMs and getting hammered... So there are a lot of factors in how long engines will go between complete rebuilds.
Btw, yours were built by a decent builder and babied for a lot of years, so its no suprise they lived to see so many hours.
The bottom ends can last hundreds of hours, or go 10... It all depends on your parts, how well they were put together, and how they are maintained/treated. Obviously the more power they make (not how much they are cabable of making) can be a huge determining factor of have long the bottom ends will last. A bottom end that's capable of handling 1200 but never sees any boost or high RPMs could last a lot longer than a lower output engine that's constantly at 5000+ RPMs and getting hammered... So there are a lot of factors in how long engines will go between complete rebuilds.
Btw, yours were built by a decent builder and babied for a lot of years, so its no suprise they lived to see so many hours.
