Solid roller lifters?
12-06-2016, 08:34 PM
#1
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Solid roller lifters?
Whats everybody running solid roller using for lifters these days. My last builds were isky red zones needle which at the time were a great lifter. Also opinions on needle vs bushing. Do bushed rollers really rob any noticeable power.
Basically to cut to the chase what's a good choice for solid roller lifter on 725 plus hp max @ 6,000-6,500
Basically to cut to the chase what's a good choice for solid roller lifter on 725 plus hp max @ 6,000-6,500
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12-06-2016, 10:20 PM
#4
12-07-2016, 04:30 AM
#7
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2 motors Isky .904 bushed .765" lift 6,500 rpm .000 change in lash 4 seasons
2 motors Isky .904 bushed .765" lift 7,500 rpm .000 change in lash 4 seasons
1 motor Morel .904 needles .721" lift 6,200 rpm all the time stud rockers no girdle .000 change 200 hours
1 motor Comp Elite .904 needles .721" lift 6,200 rpm end of second season failure at the ramp
1 race boat motor Jesel .842 needles .800" lift 6,500 rpm 6 race seasons .000 change in lash. These lifters were in a pleasure boat motor for unknown hours b4 they were put in the race motor.
We have a/b tested the Isky lifters same dyno same day and they are down 30hp over needles. Are they nice? Yes. Do they rob power yes. However if you are going to do regular maintenance. I don't see that they are needed. If you are of the lazy type with maintenance I think they are a better option. All depends on the owner and how much they care about there boat. Myself I prefer Jesel's in my own stuff. I don't mind running through the valves every week. I don't think there is one brand
Lifter that is a fits all. You have to look at the entire package. We run a MINIMUM of 7/16" .160 wall pushrods in everything sometimes 1/2" on the exhaust even 1/2" dual taper on the intake. DO NOT used 3/8" pushrods and any kind of camshaft. We also use Titanium Retainers and Titanium locks in everything. We have a boat with a pair of 1200hp turbo motors with the same Titanium Retainers for 15 years. Actually I borrowed the locks out of the one motor to put my new heads together. And they are 15 years old. The key to success is a well matched package. You can spend all the money on everything but if the package doesn't work together you are not going to be a happy camper. Keep the oil pressure up at idle. If you have to turn the idle up. And don't idle for long periods of time. I think this contributes to longer life. Basically run the piss out of it as often as possible...
2 motors Isky .904 bushed .765" lift 7,500 rpm .000 change in lash 4 seasons
1 motor Morel .904 needles .721" lift 6,200 rpm all the time stud rockers no girdle .000 change 200 hours
1 motor Comp Elite .904 needles .721" lift 6,200 rpm end of second season failure at the ramp
1 race boat motor Jesel .842 needles .800" lift 6,500 rpm 6 race seasons .000 change in lash. These lifters were in a pleasure boat motor for unknown hours b4 they were put in the race motor.
We have a/b tested the Isky lifters same dyno same day and they are down 30hp over needles. Are they nice? Yes. Do they rob power yes. However if you are going to do regular maintenance. I don't see that they are needed. If you are of the lazy type with maintenance I think they are a better option. All depends on the owner and how much they care about there boat. Myself I prefer Jesel's in my own stuff. I don't mind running through the valves every week. I don't think there is one brand
Lifter that is a fits all. You have to look at the entire package. We run a MINIMUM of 7/16" .160 wall pushrods in everything sometimes 1/2" on the exhaust even 1/2" dual taper on the intake. DO NOT used 3/8" pushrods and any kind of camshaft. We also use Titanium Retainers and Titanium locks in everything. We have a boat with a pair of 1200hp turbo motors with the same Titanium Retainers for 15 years. Actually I borrowed the locks out of the one motor to put my new heads together. And they are 15 years old. The key to success is a well matched package. You can spend all the money on everything but if the package doesn't work together you are not going to be a happy camper. Keep the oil pressure up at idle. If you have to turn the idle up. And don't idle for long periods of time. I think this contributes to longer life. Basically run the piss out of it as often as possible...
12-07-2016, 04:36 AM
#8
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The nice thing about the Jesel's is there is no up-charge for larger diameter bodies with larger wheels. The .842's cost as much as a .937 at that point it's a nobrainer to step up to a .937 lifter. If you go the Morel route keep in mind they do not move the oil band up in there larger diameter lifters. If you use a higher lift cam or larger diameter cam core. You have to use a bushing that moves the oil band up or machine a groove in the lifter. Morel makes a bushing that moves the oil band up. They only come in one size and require a ridiculous amount of machining. I do highly recommend larger diameter lifters. Although I have a bunch of 55mm cam blocks I'm not totally sold on them at this point. I am however sold on the larger lifters.
Last edited by Black Baja; 12-07-2016 at 04:58 AM.
12-07-2016, 07:01 AM
#9
Registered
2 motors Isky .904 bushed .765" lift 6,500 rpm .000 change in lash 4 seasons
2 motors Isky .904 bushed .765" lift 7,500 rpm .000 change in lash 4 seasons
1 motor Morel .904 needles .721" lift 6,200 rpm all the time stud rockers no girdle .000 change 200 hours
1 motor Comp Elite .904 needles .721" lift 6,200 rpm end of second season failure at the ramp
1 race boat motor Jesel .842 needles .800" lift 6,500 rpm 6 race seasons .000 change in lash. These lifters were in a pleasure boat motor for unknown hours b4 they were put in the race motor.
We have a/b tested the Isky lifters same dyno same day and they are down 30hp over needles. Are they nice? Yes. Do they rob power yes. However if you are going to do regular maintenance. I don't see that they are needed. If you are of the lazy type with maintenance I think they are a better option. All depends on the owner and how much they care about there boat. Myself I prefer Jesel's in my own stuff. I don't mind running through the valves every week. I don't think there is one brand
Lifter that is a fits all. You have to look at the entire package. We run a MINIMUM of 7/16" .160 wall pushrods in everything sometimes 1/2" on the exhaust even 1/2" dual taper on the intake. DO NOT used 3/8" pushrods and any kind of camshaft. We also use Titanium Retainers and Titanium locks in everything. We have a boat with a pair of 1200hp turbo motors with the same Titanium Retainers for 15 years. Actually I borrowed the locks out of the one motor to put my new heads together. And they are 15 years old. The key to success is a well matched package. You can spend all the money on everything but if the package doesn't work together you are not going to be a happy camper. Keep the oil pressure up at idle. If you have to turn the idle up. And don't idle for long periods of time. I think this contributes to longer life. Basically run the piss out of it as often as possible...
2 motors Isky .904 bushed .765" lift 7,500 rpm .000 change in lash 4 seasons
1 motor Morel .904 needles .721" lift 6,200 rpm all the time stud rockers no girdle .000 change 200 hours
1 motor Comp Elite .904 needles .721" lift 6,200 rpm end of second season failure at the ramp
1 race boat motor Jesel .842 needles .800" lift 6,500 rpm 6 race seasons .000 change in lash. These lifters were in a pleasure boat motor for unknown hours b4 they were put in the race motor.
We have a/b tested the Isky lifters same dyno same day and they are down 30hp over needles. Are they nice? Yes. Do they rob power yes. However if you are going to do regular maintenance. I don't see that they are needed. If you are of the lazy type with maintenance I think they are a better option. All depends on the owner and how much they care about there boat. Myself I prefer Jesel's in my own stuff. I don't mind running through the valves every week. I don't think there is one brand
Lifter that is a fits all. You have to look at the entire package. We run a MINIMUM of 7/16" .160 wall pushrods in everything sometimes 1/2" on the exhaust even 1/2" dual taper on the intake. DO NOT used 3/8" pushrods and any kind of camshaft. We also use Titanium Retainers and Titanium locks in everything. We have a boat with a pair of 1200hp turbo motors with the same Titanium Retainers for 15 years. Actually I borrowed the locks out of the one motor to put my new heads together. And they are 15 years old. The key to success is a well matched package. You can spend all the money on everything but if the package doesn't work together you are not going to be a happy camper. Keep the oil pressure up at idle. If you have to turn the idle up. And don't idle for long periods of time. I think this contributes to longer life. Basically run the piss out of it as often as possible...
