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#1
05-09-2014, 02:34 PM
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Hydraulic rollers/racing..
Just throwing this out. Just curious how much over the nose pressures and lift are considered max for a hydraulic roller ?? I know there will be at time to calm down my car but still want performance on track....without a whole lot of maintenance. Birddogging the valve train is top of list.
 I know Luhn is working on some HR stuff but would like some hands on info.. Also interested in pump gas/E85 use with HR cam. Thank you
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 ECM member. 2008 Outlaw Pontiac Drag Series Champion MANDRA Do it now fool! Life is short. 69 Grand Prix/3163lbs / IAII 535 w/ Tiger heads by Gaydosh....9.35@ 144 so far..  through mufflers. 1.26 60'. Going back to track with pump gas engine.... My 60 Ventura retired to street/strip duty.. |
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#2
05-09-2014, 02:59 PM
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Comp told me 180 on the seat,did not ask open.Tom
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#3
05-09-2014, 03:18 PM
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The Morel HR lifters I put in my big "Big Chebbie" are advertised to be good to 200# or so on the seat and over 500# open. Overkill for what I am doing, but if they will survive that, they shouldn't break a sweat at 140 on the seat and 360 open.
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#4
05-09-2014, 07:34 PM
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Thanks for replies...
My SR open is 980'ish....guess that answers my question?? I gather the lobe profiles will be different so maybe pressures will be different too as related to lift and ramp speeds..?? Anyone using Johnson lifers?? Just wondering.. P-Dude ...ya out there??
__________________
ECM member. 2008 Outlaw Pontiac Drag Series Champion MANDRA Do it now fool! Life is short. 69 Grand Prix/3163lbs / IAII 535 w/ Tiger heads by Gaydosh....9.35@ 144 so far.. through mufflers. 1.26 60'. Going back to track with pump gas engine.... My 60 Ventura retired to street/strip duty.. |
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#5
05-10-2014, 09:36 AM
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FWIW:
When I ran my 260'[email protected] Hyd roller I ran 150 seat with 405 open and at Virginia on spray, 7000 rpm thru the traps it ran perfect.
I set Butchers up the same way. I use the Beehive springs/titanium retainers as you can use less pressure with better valve control. Well Worth the extra money. Easier on parts too. ************************************************** ***************** |
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#6
05-10-2014, 11:51 PM
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Quote:
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Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) ... or has a Pontiac born the same year as Jim Wangers? (1926} 
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#7
05-11-2014, 12:22 AM
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Thanks Dude...
Yes Jack. Seriously....370 seat
__________________
ECM member. 2008 Outlaw Pontiac Drag Series Champion MANDRA Do it now fool! Life is short. 69 Grand Prix/3163lbs / IAII 535 w/ Tiger heads by Gaydosh....9.35@ 144 so far.. through mufflers. 1.26 60'. Going back to track with pump gas engine.... My 60 Ventura retired to street/strip duty.. |
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