Morel 5315 lifters
10-19-2015, 07:58 PM
#1
Morel 5315 lifters Trying to figure out lifters. Don't want to deal with a link bar, was going to go with ls7 but read some good stuff on the morel drop ins. My question is, they say not to spin the morels to 6500rpm? I should be shifting there or 6600, that is only when I'm racing it won't be there all the time. thanks in advance.
10-19-2015, 08:27 PM
#3
Depends on the valvetrain setup. I am running 5315's on my setup shifting 68-6900 rpm with no issues but I am not routinely beating the **** out of the car either. also my valvetrain is pretty light, ti retainer, hollow stem valves, stock style rocker, and mild cam lobes. the motor wants to spin much higher with ease, so I know it is happy.
That being said if I did it over I would probably opt for the Johnson 2110 being it is used in the Copo 5th gens spinning 8500 rpm....piece of mind more then anything and it could very well be overkill.
That being said if I did it over I would probably opt for the Johnson 2110 being it is used in the Copo 5th gens spinning 8500 rpm....piece of mind more then anything and it could very well be overkill.
10-19-2015, 08:29 PM
#4
I gotchya, i have tsp 650 lift and gonna go with their chromoly push rods. Heads will be sent to AI and i think he keeps factory valves unless damaged. will be 799 heads. I also have TI retainers. Mine is a weekend warrior but it doesn't always see races and i cruise it every other weekend pretty much. right now i normally just take her up to 48-5k just messing around and what not.
10-19-2015, 08:44 PM
#7
The factory hollows are awfully hard to find these days, but Katech still sells a 2.10" hollow that Phil @ A.I. could turn down to a 2.02" or 2.04"; whatever fits on the stock valve seats. A standard stainless exhaust valve is still light enough for a dual spring set up to keep in control.
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10-20-2015, 06:16 PM
#13
Do I have customers that turn the Morel 5315's higher than 7000 rpm and get away with it. Sure. Am I going to suggest it is fine to do or Morel suggest that it is Ok.....No. Any mfg has to have limits. Every tach I have ever seen has a Redline......Have we all crossed it....
10-20-2015, 06:27 PM
#14
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I think the luck you get with a 5315 isn't much better than a LS7. Lots of people have gone beyond the limits of OEM lifters with no harm but if they do fail it's ugly. I found out first hand the budget "street" lifters are machined from foreign cast bodies that are shockingly brittle. Like I said many, many people have no issues but in my case a few hundred spent once would have saved me many times that.
10-21-2015, 09:23 AM
#17
9/10 times when a part fails the part always gets the blame when it's usually a setup issue. Like I said, if you build your valve train correctly then you should have no issues with a drop in lifter.
10-22-2015, 03:36 PM
#18
All of the Morels including the 5315 use a live axle with loc wire retention. This is the same type used in the High end lifters. With aggressive cam profiles, if the lifter starts to loose contact with the lobe and "bounce". The swedge design has the tendency to works its way apart and the axle will walk out of the lifter.
Look at a Morel carefully and you can see the loc wire retention system. Same type of system used in pistons to retain the pin.
Look at a Morel carefully and you can see the loc wire retention system. Same type of system used in pistons to retain the pin.
10-22-2015, 05:57 PM
#19
All of the Morels including the 5315 use a live axle with loc wire retention. This is the same type used in the High end lifters. With aggressive cam profiles, if the lifter starts to loose contact with the lobe and "bounce". The swedge design has the tendency to works its way apart and the axle will walk out of the lifter.
Look at a Morel carefully and you can see the loc wire retention system. Same type of system used in pistons to retain the pin.
Look at a Morel carefully and you can see the loc wire retention system. Same type of system used in pistons to retain the pin.
10-23-2015, 11:02 AM
#20
Have said it before & will again. We have used, Morel, Johnson, LS7. The biggest problem we had was that the LS7 lifters bled down w/ engine off, 150#/450# dual springs. This caused the roller smack discussed in other threads. We've never had the bleed down issue w/ Morels or Johnson for that matter. So, there is most definitely an internal tolerance difference between Morel 5315 & LS7 lifters. We'd choose Morel 5315 over LS7 every time, regardless.
Go with 11/32" pushrods.
Go with 11/32" pushrods.