Lifter madness
12-04-2017 | 09:43 AM
#61
Registered
Joined: Jul 2004
Posts: 11,332
Likes: 73
From: chicago
i recently used a set of the comp short travel hyd roller lifters on a n/a 509 build and i liked them.i won,t use the morel hyd roller lifters anymore,out of 10 sets i had 3 lifters colapse right away on the dyno,this was during warm up.i had to replace the bad one before a dyno pull could be made.i think comp cams hit a home run with their short travel hyd roller lifter.
12-04-2017 | 10:23 AM
#62
Registered
Joined: Feb 2012
Posts: 252
Likes: 3
From: Kelowna
are they better then say the cranes?
my thing is sticking or trying to stick with parts i can get over the counter or a few days away if i have something fail
the johnsons look nice but the GMPP stuff runs a bit cheaper, i know cheaper is not really better especially in a marine set up but if the johnsons don't stand a head above a OE part, is it worth paying more?
my thing is sticking or trying to stick with parts i can get over the counter or a few days away if i have something fail
the johnsons look nice but the GMPP stuff runs a bit cheaper, i know cheaper is not really better especially in a marine set up but if the johnsons don't stand a head above a OE part, is it worth paying more?
12-04-2017 | 08:53 PM
#63
Registered
Joined: Jun 2010
Posts: 4,838
Likes: 928
i recently used a set of the comp short travel hyd roller lifters on a n/a 509 build and i liked them.i won,t use the morel hyd roller lifters anymore,out of 10 sets i had 3 lifters colapse right away on the dyno,this was during warm up.i had to replace the bad one before a dyno pull could be made.i think comp cams hit a home run with their short travel hyd roller lifter.
12-04-2017 | 08:56 PM
#64
Registered
Joined: Jun 2010
Posts: 4,838
Likes: 928
are they better then say the cranes?
my thing is sticking or trying to stick with parts i can get over the counter or a few days away if i have something fail
the johnsons look nice but the GMPP stuff runs a bit cheaper, i know cheaper is not really better especially in a marine set up but if the johnsons don't stand a head above a OE part, is it worth paying more?
my thing is sticking or trying to stick with parts i can get over the counter or a few days away if i have something fail
the johnsons look nice but the GMPP stuff runs a bit cheaper, i know cheaper is not really better especially in a marine set up but if the johnsons don't stand a head above a OE part, is it worth paying more?
morel makes 90% of the lifters out there. Ours failed within 5 minutes of running. Terrible. I’ve also read of multiple failures on this forum and car forums. Think mike posted his experience above. I opted for Johnson and they’ve treated us well.
12-04-2017 | 10:12 PM
#65
Registered
Joined: Oct 2007
Posts: 8,439
Likes: 94
From: yorkville,il
i can,t say if comp makes them or if they buy from someone else.i have heard all good about the johnson,s and i know the cranes are good.i am going to continue to use the comp,s.
12-05-2017 | 03:11 PM
#66
Frank's Marine Service
Joined: Sep 2002
Posts: 11,959
Likes: 142
From: Elkton, MD
Seems every decade this debate comes up and things sway one direction or another.
Years ago everyone was having issues with hydraulic rollers so tight-lash solid rollers were all the rave. Then fast foward some years, high RPM short travel lifters are/were all the glory along with micro polishing and pin oiling. Now we're back to solids.
Bottom line for me is that I've seen them all fail and I think certain companies quailty can fluctuate up and down over the years. Seen them all break; solids, hydraulic, short travel, bushed, you name it. Given the quality of metal we see these days, I'd still never go back to a flat tappet cam.
As someone said earlier, don't let them idle long. I've always found 1000 rpm and up to be the safe zone. Also, unless they sign up for it, I can't put solids in customers engines, they just wont have it and I can't adjust valves for everyone all the time.
Another day another dollar. lol
Years ago everyone was having issues with hydraulic rollers so tight-lash solid rollers were all the rave. Then fast foward some years, high RPM short travel lifters are/were all the glory along with micro polishing and pin oiling. Now we're back to solids.
Bottom line for me is that I've seen them all fail and I think certain companies quailty can fluctuate up and down over the years. Seen them all break; solids, hydraulic, short travel, bushed, you name it. Given the quality of metal we see these days, I'd still never go back to a flat tappet cam.
As someone said earlier, don't let them idle long. I've always found 1000 rpm and up to be the safe zone. Also, unless they sign up for it, I can't put solids in customers engines, they just wont have it and I can't adjust valves for everyone all the time.
Another day another dollar. lol
12-06-2017 | 02:42 PM
#67
Registered
Joined: Oct 2007
Posts: 8,439
Likes: 94
From: yorkville,il
Seems every decade this debate comes up and things sway one direction or another.
Years ago everyone was having issues with hydraulic rollers so tight-lash solid rollers were all the rave. Then fast foward some years, high RPM short travel lifters are/were all the glory along with micro polishing and pin oiling. Now we're back to solids.
Bottom line for me is that I've seen them all fail and I think certain companies quailty can fluctuate up and down over the years. Seen them all break; solids, hydraulic, short travel, bushed, you name it. Given the quality of metal we see these days, I'd still never go back to a flat tappet cam.
As someone said earlier, don't let them idle long. I've always found 1000 rpm and up to be the safe zone. Also, unless they sign up for it, I can't put solids in customers engines, they just wont have it and I can't adjust valves for everyone all the time.
Another day another dollar. lol
Years ago everyone was having issues with hydraulic rollers so tight-lash solid rollers were all the rave. Then fast foward some years, high RPM short travel lifters are/were all the glory along with micro polishing and pin oiling. Now we're back to solids.
Bottom line for me is that I've seen them all fail and I think certain companies quailty can fluctuate up and down over the years. Seen them all break; solids, hydraulic, short travel, bushed, you name it. Given the quality of metal we see these days, I'd still never go back to a flat tappet cam.
As someone said earlier, don't let them idle long. I've always found 1000 rpm and up to be the safe zone. Also, unless they sign up for it, I can't put solids in customers engines, they just wont have it and I can't adjust valves for everyone all the time.
Another day another dollar. lol
