comp cams short travel hyd roller lifters
 

has anyone tried the comp cams short travel hyd roller lifters in a marine engine?i was reading about them and like what i see but would like real life experiance from people who have used them.

No experience yet, but that is what I just put in the pair of 555's. Time will tell I guess. I am a little skeptical on the lash adjustment. Directions said 0-1/4 turn. I set mine at a (snug) zero. Hope to have the first one on the dyno in a week or two

let us know how it dyno,s.call me anytime joe.
btw,did you get the pistons i sent?

I have had them in a pair of motors i had bought. They were ok but i couldnt rev the motors much past 6000 not sure what the manufacture recomends. Rebuilt motors and put solids in, we then were able to rev the motors up a little more. The concept seams great I only had about 20hrs on them no issues.

All the cam companies I talked to this winter said short travel is the way to go if you are doing HR in a marine engine, mine are Johnsons we will see how results are this summer.

got the pistons. Thanks

I too was looking at those recently Mike. You can get them in the "XD" version, that come with tool steel pushrod seats, #15854XD-16 or, the standard ones without the tool steel seat # 15854-16. Looks like they are about 525 bucks for the standard ones, and 700 bucks for the XD versions of the BBC lifter. The old comp cams standard travel lifters are part #854-16, those go for like 440 bucks.

I put them in my new small block last year. They are lashed at 1/8 turn from zero.
I only took it to 5000 rpm but sustained that without issue. They move some 1.6:1 scorpion roller rockers to .570/565 lift in Dart Iron Eagle heads. I believe part of the valve train stability comes in with proper valve springs that aren't heavy and are rated to the job. I found some Comp beehives that maxed right at my lift so those are what went in.

Havent run them in my boat, but have had the comps in my 355ci sbc in my street abused 64 Vette for 4 years now and around 20-25,000 miles, that often sees 7,000 rpm in first and second gear, (6,500 3, 4, 5th) and endures a life closer to that of an endurance racer, than that of drag use or normal street use. 570 lift. They seem to hold up well to sustained high rpm high load use.[ATTACH=CONFIG]565956[/ATTACH] I run them at 1/8 turn.

thanks,that is what i was hoping to hear.

Hard to compare small block stuff with big block stuff. Under $200 you can use the GM Performance lifters and run your SBC like a buzz saw. Much lower valve/keeper weight, much lower spring weight, and pretty straight valvetrain.

I forgot to mention the other week cause we where without power and internet for 6 days (brutal massive storm), but just before then I found a company that makes limiters for hyd lifters. :)

Harley uses, on many engines, the SBC lifter. :) So, leave it to S&S cycle to make it. These should fit in the BBC GM HR lifter too.

S&S Cycle Hyrdralic Lifter Limited Travel Spacer 33-5338

Link: http://a.co/7Ojscl4

https://images-na.ssl-images-amazon....1t0OS9KTXL.jpg

Great find! Sure looks like a simple way to do it.

Any updates on these ?

i used a set in a 509 that got the snot ran out of it for the summer the owner ran it,so far so good.

Nice, I`m thinking about the XD`s

COMP Cams: Short Travel XD Hydraulic Roller Lifters for Big Block Chevy 396-454

Have some of these in my 509's. I have about 60 or so hours now on them so far so good.

COMP Cams: Short Travel Race Lifters, GM BBC

So far, mine are doing great. I have used them in the last 4 engines that I built, but probably less than 200 hrs combined on all 4 engines. The last two were 548's that we dyno'd to 6300rpm with no issues. They had pretty big cams and pretty stiff springs.