lifter question

changing lifters and found some double roller Morel exhaust lifters,,any advise or input? will additional weight be a big factor? More interested in overall reliability ,,matchrace roots FC

 

note: your exhaust pushrods will need to be shorter

 

thanks for the heads up.

 

Hi Bill, I just did a bunch of research on this myself and I can tell you that everyone recommended I use either the Morel's or the Jesel's as they do not use the needle bearings. The Morels can run 60-70 passes without failure and are about 1/2 of the cost of a new set to rebuild. The Jesel's I have heard people running them for years...with an S but they are like $2700 or something as opposed to the $900-$1,000 of the Morel's. I do not know if that price on the Morel's was the dbl roller deal. Also going from the .904 to the 1" lifter will help but they are a little more costly and they are tough to find used ones in a pinch so it is good to have a spare pair or two in the trailer. The seat location is different from the Crane's, Morel can also rebuild your Crane lifters but I am not sure what that cost's and if they do away with the needle bearings.

Take care bud,
Trev

 

1" Morels have needle bearings - it is the only way to get that accuracy for dual wheels
picture :
http://www.darkside.ca/node/150

they also are selling off there inventory of 1" at a good deal

 

We've used the Morel dbl roller exh lifters for 5 years now in our A/Fuel TAD, with zero failures, but do send them in to get rebuilt each season, w/ about 50 runs on them.

 

Say at .800 lift, what difference would you expect to see?

 

R-280/500
Lifter Rise Duration increase with .810"
Roller instead of .750"
.020 lift 0.8 deg
.050 1.3
.100 1.6
.200 1.7
.300 1.4
.400 0.9

 

A good number of 1" lifters, like our Morels, use .920" dia rollers.
the bigger the roller the better...bigger bearings, bigger shaft, & easier to follow the cam on quick lifts w/ lots of spring pressure.

 

Yes .920 wheel on the Crane and Morel 1" lifters , requires a different lobe grind than the .904 lifters .