New TSP roller tip OEM rocker
01-07-2017, 04:59 PM
#24
They probably are the old design, I have had them for awhile.
Discontinued? I don't know, I know I don't ever read about anyone using them, and
wonder why? Were there any problems with them?
Discontinued? I don't know, I know I don't ever read about anyone using them, and
wonder why? Were there any problems with them?
01-07-2017, 05:35 PM
#26
Comp still makes them. They are one my shopping list
http://www.compperformancegroupstore...e=GEN3Rockers1
http://www.compperformancegroupstore...e=GEN3Rockers1
Looks like they machined out or cast in some speed holes in the newer chromoly models.
So anyway..not trying to look like a Comp fanboy here but I am curious to know what TSP thinks is NEW!!! about what seems like a basic design that Comp has been quietly making for a while now. I heard some info that insinuated that the TSPs will use a stock-style trunnion so I guess you can rebuild them yourself. That's a potential plus. But the Comps carry a lifetime warranty which I assume includes wearing out the trunnion.
Last edited by Mercier; 01-07-2017 at 05:40 PM.
01-07-2017, 08:15 PM
#29
I think the Comp's didn't take off because of the weight... they are steel and roller rockers. So even heavier than the YTs. But they won't break (or shouldn't).
The issue is once you really need a roller rocker with something like a low-lash solid roller, you'd be much better off just picking up the T&Ds if you want aluminum or the Crowers if you want something that'll last longer than the rest of the engine. Both provide the needed adjustability too. Even the adjustable YTs end up costing a lot more than their non-adjustable stud mounts and have disadvantages to a shaft-mount. But anything beyond those price points is really absurd when either work damn well.
I would like to see how the TSP rockers work though. They could be a nice alternative to the Crowers/T&Ds for the solid roller guys. That's really the difference in cost right now between the setups (unless you go with a bushed solid lifter).
The issue is once you really need a roller rocker with something like a low-lash solid roller, you'd be much better off just picking up the T&Ds if you want aluminum or the Crowers if you want something that'll last longer than the rest of the engine. Both provide the needed adjustability too. Even the adjustable YTs end up costing a lot more than their non-adjustable stud mounts and have disadvantages to a shaft-mount. But anything beyond those price points is really absurd when either work damn well.
I would like to see how the TSP rockers work though. They could be a nice alternative to the Crowers/T&Ds for the solid roller guys. That's really the difference in cost right now between the setups (unless you go with a bushed solid lifter).
01-07-2017, 09:36 PM
#30
I think the Comp's didn't take off because of the weight... they are steel and roller rockers. So even heavier than the YTs. But they won't break (or shouldn't).
The issue is once you really need a roller rocker with something like a low-lash solid roller, you'd be much better off just picking up the T&Ds if you want aluminum or the Crowers if you want something that'll last longer than the rest of the engine. Both provide the needed adjustability too. Even the adjustable YTs end up costing a lot more than their non-adjustable stud mounts and have disadvantages to a shaft-mount. But anything beyond those price points is really absurd when either work damn well.
I would like to see how the TSP rockers work though. They could be a nice alternative to the Crowers/T&Ds for the solid roller guys. That's really the difference in cost right now between the setups (unless you go with a bushed solid lifter).
The issue is once you really need a roller rocker with something like a low-lash solid roller, you'd be much better off just picking up the T&Ds if you want aluminum or the Crowers if you want something that'll last longer than the rest of the engine. Both provide the needed adjustability too. Even the adjustable YTs end up costing a lot more than their non-adjustable stud mounts and have disadvantages to a shaft-mount. But anything beyond those price points is really absurd when either work damn well.
I would like to see how the TSP rockers work though. They could be a nice alternative to the Crowers/T&Ds for the solid roller guys. That's really the difference in cost right now between the setups (unless you go with a bushed solid lifter).
Perhaps the story here then is TSP coming back with a 1.7.
I don't believe you really need a roller for a solid. Roller tip is more for bronze(aftermarket) valve guides though adjustable rockers typically are roller tip also. There are some folks running LLSR cams with shimmed(for adjusting lash) stock rockers though they are the minority. Are you suggesting that is how the TSPs would be used with LLSR or are they adjustable and I missed that?
Interesting that the Comps advertise 875lb spring pressure capability. That's impressive.
In the end for my LLSRs I have T&Ds on one and adjustable Harland Sharp going on another. If T&D would just anodize their stuff orange...
These(Comp/TSP) interest me for hydraulic builds if they are similar in weight to stock.
01-09-2017, 09:05 AM
#33
Comp still makes them. They are one my shopping list
http://www.compperformancegroupstore...e=GEN3Rockers1
http://www.compperformancegroupstore...e=GEN3Rockers1
I think the Comp's didn't take off because of the weight... they are steel and roller rockers. So even heavier than the YTs. But they won't break (or shouldn't).
The issue is once you really need a roller rocker with something like a low-lash solid roller, you'd be much better off just picking up the T&Ds if you want aluminum or the Crowers if you want something that'll last longer than the rest of the engine. Both provide the needed adjustability too. Even the adjustable YTs end up costing a lot more than their non-adjustable stud mounts and have disadvantages to a shaft-mount. But anything beyond those price points is really absurd when either work damn well.
I would like to see how the TSP rockers work though. They could be a nice alternative to the Crowers/T&Ds for the solid roller guys. That's really the difference in cost right now between the setups (unless you go with a bushed solid lifter).
The issue is once you really need a roller rocker with something like a low-lash solid roller, you'd be much better off just picking up the T&Ds if you want aluminum or the Crowers if you want something that'll last longer than the rest of the engine. Both provide the needed adjustability too. Even the adjustable YTs end up costing a lot more than their non-adjustable stud mounts and have disadvantages to a shaft-mount. But anything beyond those price points is really absurd when either work damn well.
I would like to see how the TSP rockers work though. They could be a nice alternative to the Crowers/T&Ds for the solid roller guys. That's really the difference in cost right now between the setups (unless you go with a bushed solid lifter).
In regards to the stud, that is how the lash is adjusted. With the Yella Terras, T&D's, etc, the adjustment is in the pushrod cup, so you have to grind clearance into the valve cover rail. You don't have to do that with the Comp rockers. The stud mount conversion has an 8mm x 3/8" stud which the rocker sits on and is adjusted with the polylock. You can also drill and tap the rocker bolt holes in the head and use a 3/8" x 3/8" stud for more stability than the 8mm stud and it costs no more than just the time to modify the bolt holes.
If I ever get into a solid roller or limited travel hydraulic lifter, I would be using these stud mount rockers. I think they're the best alternative for someone on a budget that aren't planning on turning 9-10k RPM.
01-09-2017, 09:37 AM
#34
Looks like Comp only has 1.8s in this lineup. They are chromoly which should be lighter than steel--or at least let you use less material since it is stronger. Not sure how much lighter over the valve though.
Perhaps the story here then is TSP coming back with a 1.7.
I don't believe you really need a roller for a solid. Roller tip is more for bronze(aftermarket) valve guides though adjustable rockers typically are roller tip also. There are some folks running LLSR cams with shimmed(for adjusting lash) stock rockers though they are the minority. Are you suggesting that is how the TSPs would be used with LLSR or are they adjustable and I missed that?
Interesting that the Comps advertise 875lb spring pressure capability. That's impressive.
In the end for my LLSRs I have T&Ds on one and adjustable Harland Sharp going on another. If T&D would just anodize their stuff orange...
These(Comp/TSP) interest me for hydraulic builds if they are similar in weight to stock.
Perhaps the story here then is TSP coming back with a 1.7.
I don't believe you really need a roller for a solid. Roller tip is more for bronze(aftermarket) valve guides though adjustable rockers typically are roller tip also. There are some folks running LLSR cams with shimmed(for adjusting lash) stock rockers though they are the minority. Are you suggesting that is how the TSPs would be used with LLSR or are they adjustable and I missed that?
Interesting that the Comps advertise 875lb spring pressure capability. That's impressive.
In the end for my LLSRs I have T&Ds on one and adjustable Harland Sharp going on another. If T&D would just anodize their stuff orange...
These(Comp/TSP) interest me for hydraulic builds if they are similar in weight to stock.
01-09-2017, 11:01 AM
#35
You really shouldn't run super high lift with anything other than a roller rocker. Hyd or Solid. Bronze or PM guides. Doesn't matter. The action of the stock rocker at like .650 lift is pretty bad. Though most solid profiles allow for higher lifts than their hydraulic counterparts.
01-09-2017, 12:19 PM
#37
TECH Fanatic
They only offer them in 1.8, and they never advertised them when they first came out. And even when word got out about them, they still were "unavailable" for a while.
01-09-2017, 12:44 PM
#38
The other version is for the stud mount conversion. The trunions are drilled with a larger hole for a 3/8" stud, but you can use the 8mm x 3/8" stud without having to drill and tap the bolt holes in the cylinder head.
01-09-2017, 03:27 PM
#40
They do have a few advantages over the shaft mounts (T&D/Jesel/Crower) or even the Yell Terras. You can get the Ultra Pro Mags in an adjustable stud mount for half the price of a set of shaft mount rockers. Savings that could be better used on light weight hollow stem valves or converting to a 3/8" stud.
In regards to the stud, that is how the lash is adjusted. With the Yella Terras, T&D's, etc, the adjustment is in the pushrod cup, so you have to grind clearance into the valve cover rail. You don't have to do that with the Comp rockers. The stud mount conversion has an 8mm x 3/8" stud which the rocker sits on and is adjusted with the polylock. You can also drill and tap the rocker bolt holes in the head and use a 3/8" x 3/8" stud for more stability than the 8mm stud and it costs no more than just the time to modify the bolt holes.
If I ever get into a solid roller or limited travel hydraulic lifter, I would be using these stud mount rockers. I think they're the best alternative for someone on a budget that aren't planning on turning 9-10k RPM.
If this is the case I might end up picking some of them up after I get a little more in way of results on how my shimmed stockers run at the track.
The cost of the shaft mounts, plus the need for aftermarket tall valve covers, plus then possibly coil relocation or longer plug wires as well makes the price quite high.
If these would offer the adjustability and possibly some minor power gains on a LLSR that is .630"/.620" lift and only needs to rev around 7,000 rpms then they might be right up my ally.