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Thread: P.J.GRADY Lift Piston feedback wanted

  1. #61
    Senior Member DMC5180's Avatar
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    Their are lots of technical documents from various manufactures that concur with Rob's statement. Rod Down

    A quick search found this document that goes into all the technical aspects of a gas spring. It's a good read and easy to understand.

    camloc-gas-spring-information.pdf
    DENNIS

    VIN 5180, Frame 3652, STAGE I, DM-eng Solid State Solutions (RPM Rly, Dm.Lt.Mod., Fan Fail Mod. , FAN Rly, HS.Rly) , HID sealed beam style headlights, SPAX user since 2009, Eibach springs, Mid-State Club Adj. Rear LCA's, DPNW poly-sway bar kit, DMCEU LCA Stabilizer link kit, DMCMW Illuminated door sills, Aussie Illuminated SS Shifter plate, GENUINE MOMO EVO Steering wheel, DELOREANA Extended View Side Mirrors w/ Heaters, DELOREANA LED Door Lights.

  2. #62
    Senior Member Domi's Avatar
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    Thank you for sharing this document

  3. #63
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    I ordered mine through DPI and received and installed them a few months ago. I have Strong Arm struts on my D and installed Grady's on my fiancee's D. I like Grady's struts better. They seem to have more force while lifting while also being more controlled throughout the lifting range, especially towards the end of the stroke when the dampening kicks in. I may try swapping them between cars to see how the slight differences in torsion bar adjustment affects each set. When my Strong Arm struts wear out, I'll be ordering another set of Grady's (if they're still around)!
    -Derrin

    5786: DPI cams and cat-less exhaust, galvanized and powder coated manual frame for a proper 5-speed conversion, Kenwood head unit, Polk DXi speakers, and Pioneer-loaded DMC-CA sub box.

    3196 - My wife's DeLorean: DMCH new build, DPI rebuilt engine with performance cams and exhaust, Kenwood head unit, Eclipse speakers, Genesis 5-channel amplifier, and JL loaded DMC sub.

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  4. #64
    Senior Member Justin51982's Avatar
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    I bought some from Rob several months back. The price was outstanding and the lift on everything is incredible.

    Like so many others have said. I'ts a strong recommend on Grady's

  5. #65
    Senior Member
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    "WINTER" Door Lift Pistons available this autumn.

    Quote Originally Posted by Justin51982 View Post
    I bought some from Rob several months back. The price was outstanding and the lift on everything is incredible.

    Like so many others have said. I'ts a strong recommend on Grady's
    Thank you for your business and input Justin. I'd like to remind everybody that as the seasons fade and we face another long cold winter in the northern climes there is one ritual as a DIEHARD DELOREAN DRIVER you needn't have to perform this winter. No more torsion bar adjustments or sagging doors because I'm introducing a WINTER version of my current gas spring. Already tested and tweaked last winter these will be available in a few months. Garage queens need not apply. These are for the HARDCORE OWNERS WHO DRIVE IN
    SUBFREEZING temperatures and want the door to OPEN FLAWLESSLY WITHOUT ADJUSTING THE TORSION BARS up and down as the temps fall and rise again. Come on you "lunatic fringe...we know you're out there"...myself included! They will be best suited for temps ranging from around 0 to 50 degrees but will have even more advanced dampening to allow for higher temps without causing damage to the ballstud mtg areas. They will be harder to open and close if used above that temp zone however. There will be an additional discount if you buy a set of our normal ("summer") pistons and the "Winter" pistons at the same time. They will be labeled "Northern Winter Use Only" to remind you to swap them out as temps rise in the spring.
    Rob
    Last edited by PJ Grady Inc.; 08-01-2015 at 04:57 PM.

  6. #66
    Senior Member Chris 16409's Avatar
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    Rob will your winter struts work with "DE-torqued" torsion bars?
    Chris Miles

    For Better or Worse I own a DeLorean!
    1983 Grey Manual, VIN #16409, Fresno, California

  7. #67
    Senior Member
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    Quote Originally Posted by Chris 16409 View Post
    Rob will your winter struts work with "DE-torqued" torsion bars?
    I hate these type of questions as you're asking if I'm suggesting that you can use the "gas spring" for a purpose I did not intend. If however you are asking that in the case of a torsion bar hex being damaged so it can't be adjusted higher to the correct tension will it help the door open higher the answer is yes.

    The only person who has returned a door gas spring of our latest design had bars that were apparently set too soft, or not adjustable, and he did not want to try to adjust the bar. I sent him a prototype winter version and have yet to hear back and that was a month or two ago. While it could get you out of a jamb like that it is not the intention of a "Winter" door piston. That's why I call it "Northern winter" because places down south like Florida and Texas and SOCAL etc should not need this piston in their milder winter temperature ranges either.

    I would also like to add I currently have a set of "Winter" pistons on my car to see what issues summer use might cause. Other than added pressure to close I can let the door go and it won't bounce at the top with the extra damping feature that it incorporates. However where a problem could arise is if a piston were to hangup internally and this dampening feature could be temporarily bypassed. In that instance I could foresee some damage to the ballstud mount and I therefore DO NOT recommend using the "Winter" piston year round as there could be a potential for a problem. I can only allow for the limits of a properly functioning part...not a malfunctioning part being used under unintended conditions.
    Used properly these gas springs will save a lot of time and wear and tear on the expensive and tricky to adjust (at times) torsion bars.
    Does that answer your question Chris?
    Rob

  8. #68
    Senior Member Chris 16409's Avatar
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    Yes, that helps Rob. I guess I will just have to do a torsion bar adjustment. My passenger door is pretty lazy. It will only open about a quarter to a third of travel as it sits now. And that's in 90+ degree heat.
    Chris Miles

    For Better or Worse I own a DeLorean!
    1983 Grey Manual, VIN #16409, Fresno, California

  9. #69
    Senior Member DMC-81's Avatar
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    Door Struts - happy customer

    Last weekend, I installed new P.J. Grady door pistons in conjunction with getting my torsion bars adjusted. Just wanted to provide initial feedback on the product, as I chose them based on this thread. They provide strong, full lift. I really like the soft finish that prevents the door from bouncing at the top of travel.

    Great product!

    image.jpg
    Dana

    Delorean status: CECF 2017 Platinum Award winner. Still tinkering...

    Pictures and comments of my restoration journey are in the albums section on my profile.

    .

  10. #70
    Member
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    Location:  Richmond Va.

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    Uh Oh 1st failure I hope. Driver door installed 6 months ago, used maybe 12 open and shuts.
    Strut is dead. Will contact Grady next week.

    Steve

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