[quick67bird]

Ken did not ask about anything. What he said was $5,000 to putup or shutup. Pretty simple offer and solution. If you car is as you say should be more money than you make at any of the races you attend. I have followed your posts after Ken's and have seen you slam him many times for his accomplishments for no reason. For your own information I have seen bigger engines than Ken's only in the high 10s in tubbed cars.

So the question is $5,000. What is your answer. He is even willing to come to your backyard when I would be saying meet me halfway.

Robert

[quick67bird]

after the answer.

Robert

[quick67bird]

I am very interested in doing a hydraulic roller cam with solid roller lifters too. Cliff have you gotten to run you car this year to see if you picked up MPH or dropped any ET. I have solid roller springs as well as some springs designed for a big solid flat tappet. Which ones would I use?

Robert

[ponjohn]

I want to do a head swap an run a hyd flat tappet to feel out the combo with the old cam. This is of interest if I can then step up to a roller without a valve spring change.

John

[DiamondJim]

If you guys that are running HR/Solids don't mind, could you post what springs and what brand lifters are working for you? I am looking at Comp Endurex solids, would those need restictors? Thanks -Jim

[DiamondJim]

I have a Comp XR288HR, anyone running solids on that cam? Thanks -Jim

[matt carr]

Iam running a similar cam to the xr288hr. It is a 236/242hr w/ xfi lobes. I run the comp 914 spring and crower sr lifters. I can here the lifters tapping only when the hood is up. The engine is a 434 5 speed. I dont have any track numbers yet,but feels very strong on the street.

[quick67bird]

Originally Posted by ponjohn

I want to do a head swap an run a hyd flat tappet to feel out the combo with the old cam. This is of interest if I can then step up to a roller without a valve spring change.

John

That is what I am thinking as well as I am not comfortable with over 600lbs open on the street either. I am not very comfortable because I have no experience with this kind of pressures.

Robert

[Larry Navarro]

SD Performance, custom grind COMP XR288R & solids. 236/245, 112LSA
Talk to Marcel @ SD about this grind, lifters and specs.
It's flat-out awesome in my engine.

[440GP69]

The Comp Endurex lifters Don't require restrictors and are very good lifters

[Geoff]

I run solid lifters on a hyd cam, except I use FT's. I run 0.004 to 0..007" lash with alum heads. The lash increases by about 0.002" at operating temperature.
Roller or FT, I see a number of advantages: [ with only one disadvantage: periodic check/adj ].
[1] No lifter collapse from spring pressure, therefore no loss of valve lift. Higher spring pressures, compared to FT, are required for rollers, but the lifter innards are still 0.842" innards & can be expected to lose much more than 0.004" loss from manual lash [ for 1.5 ratio rockers, less for 1.65 ]

[2] No lifter pump up, no loss of HP @ pump up rpm. Yeah, you can run heavier springs to delay pump up, but that causes greater lifter collapse [1] & more stress on valvetrain.

[3] With no lifter pump up with a given spring presure, greater rpm & depending on cam profile, more HP.

[4] More REAL [ or effective ] duration because lifter collapse of a hyd lifter shortens duration. Depending on cam, combo, more HP.

[Cliff R]

Cliff have you gotten to run you car this year to see if you picked up MPH or dropped any ET.

I've only managed two outings, one 1/8th mile and ran the car at Norwalk for 3 days. The weather was decent for August, still a tad hot but not nearly as humid as most years. We ran 11.40's at 120mph, 7.20 @ 96mph in the 1/8th mile.

This was with the total timing set at 24 degrees, as I inadvertantly put the distributor in one tooth off after pulling it to replace the module. I set the timing with the vacuum hose connected to the advance, which added 10 degrees. Didn't realize my mistake till I made a couple of runs and the car felt a little "soft" on the starting line. When I tried to advance the timing, the vacuum unit was up against the intake manifold, so we just left it like that and raced it all weekend.

Got it moved to the correct location, just haven't had an opportunity to get back to the track. We'll get at least one more outing this season, as the weather is still good, and the tracks around here are still open.....Cliff

[tom s]

When Comp had me run the solid rollers on their hyd roller cam it was because of 2 thing,400 lobe lift and RPMs over 6500.For that application they wanted a solid roller spring setup.FYI,Tom

[69Goat1]

I will just go ahead and STFU since I seem to be the minority and I know Ken is in his business to make money and I hope he does... I can't afford to have him build me an engine so I have to make due with what I have but I am happy with it...

Carry on everyone because Deer season is upon us and I won't be around anyway...

[PONTIAC DUDE]

Goat. I have no issues with people using solids on a hyd roller. For the street is does take a lot of the strain off the engine a race roller with faster ramps creates. I have been running solids in one form or the other ALL my life. Even back before you had a drivers license. You can't set Circle track LATE MODEL records running hyd cams. LOL. Never had an issue and after the 2/3rd time it's uaually a check and go.

But. I do get upset when I see false information such as................ Lifters are too heavy to rev or make hp. They break frequently. La La La.

I think I have more time on hyd rollers then anyone on here with great results.

I have seen solid lifter come apart and shoot thru a BBC and ruin the block. It can happen with anything. But is in the minority, both hyd & solid, as far as a well set up valvetrain that matches the cam profile.
Cliff is a friend and just give him a hard time to make sure his blood pressure stays on the top end of the checker. LOL.

I stick with the hyd roller because there ARE a lot of Pontiac people that want to make power but not ......... have to worry about wiping out a flat tappet camshaft with todays oils. No breakin to worry about, and some still don't have any idea how to do it right or even want to check or adjust valves. I think they are the best of many worlds, but as anyone knows, you aren't gonna make the power of a solid roller ramp with a hydraulic no matter what lifter you use on it.

It is a street deal or street/strip for the new millienuim.

Yes some engines can benifit by going to a solid, but i would have to see big gains for me to convert and talk my customers into.

I think it's the something different deal more then anything for street/strip applications as I was running hyd lifters on solid cams and versa visa back in the 70's. Rules dictated ya had to work outside the box to make power and beat the competition.
But cam profiles came out of the stone age and wasn't needed anymore.

What ever works for a person, do it.

[Steve C.]

Pontiac Dudes comments generate this, it might be of interest to some.....

"Hydraulic Roller Valvetrains Are Revving Higher And Making More Power Than Ever Before. We Reveal Their Secrets."

http://www.popularhotrodding.com/tec...ins/index.html

[Overkillphil]

Comp "Endurex", too bad they couldn't have come up with a better name!

Sounds like the kind of product that one needs to open in a big hurry before the mood passes...

[jjs]

Will stock chevy hyd rollers fit a pontiac engine? There are a lot in the junk yards theses days and you can reuse them.

[Karch]

Originally Posted by jjs

Will stock chevy hyd rollers fit a pontiac engine? There are a lot in the junk yards theses days and you can reuse them.

No, they won't work.

[DiamondJim]

I am bringing this back up because I am a little confused. I have a Comp XR288HR and Endur-x solid lifters. .006 lash, is that at the lobe? With 1.65 rockers would I set lash at .0.010 (1.65 x .006) ? Thanks -Jim