rear strut upgrades towing heavy loads

Discussion in 'Gen 2 Prius Accessories & Modifications' started by Glen2007, Jun 10, 2021.

  1. Glen2007

    Glen2007 Junior Member

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    Reading this thread Heavy Springs And Lift Upgrade | PriusChat .
    Inspired me to order these For 2009-2010 Toyota Matrix Rear Pair Quick Complete Strut & Coil Spring | eBay For 2009-2010 Toyota Matrix Rear Pair Quick Complete Strut & Coil Spring. I do not see a huge difference unless the mounting is different on top or the bottom ? As far as the length difference if I started to jack up my rear end im pretty sure the tire will be making contact with the ground well above 2 inches difference. Then there is the travel length so that spec seems to be 2 inch difference so maybe these will drop in by raising jacking up the lower bolt suspension to compensate for the 2 inch shorter length. Now that I have a generic stock spec length of travel I could raise my rear end measure at wheel well then lower then see difference. That might tell me how many inches of loaded travel is available. And possibly how much sag compared to other stock pri. IMG_1286.JPG
     
    #1 Glen2007, Jun 10, 2021
    Last edited: Jun 10, 2021
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  2. Glen2007

    Glen2007 Junior Member

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    Abracadabra
    . Dropped right in. For 2009-2010 Toyota Matrix Rear Pair Quick Complete Strut & Coil Spring .
    FWD 2009 Pontiac Vibe Base Wagon 4-Door 1.8L 1798CC 110Cu. In. l4 GAS DOHC Naturally Aspirated.
    The rear gained 1.5 inches !!! These did not say awd. If you are not really strong get an impact for the 19mm nut. Or put your breaker bar on nut then lower make sure you are turning moving the lever in the proper direction. Installed in 110 degree heat in the shade fun . Will report later when trailer gets attached and the tongue weight gets added. When you do a curb weight comparison prius vs matrix the 2009 is heavier. For 2009-2010 Toyota Matrix Rear Pair Quick Complete Strut & Coil Spring | eBayFor 2009-2010 Toyota Matrix Rear Pair Quick Complete Strut & Coil Spring | eBay IMG_1317.JPG IMG_1317.JPG IMG_1318.JPG IMG_1319.JPG IMG_1320.JPG
     
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  3. James Finch

    James Finch Junior Member

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    Awesome! Wondering what are the options for the Gen 3's? Time for suspension work and I'll soon have the front Strut Assembly removed to have as a reference specification and test unit.

     
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  4. black_jmyntrn

    black_jmyntrn Active Member

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  5. Plaman

    Plaman Member

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    Is it possible to install both the heavier springs and Prius Offroad lift kit or are they mutually exclusive?
     
  6. black_jmyntrn

    black_jmyntrn Active Member

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    What would you be trying to accomplish is the question? As it is, no you would use one or the other, using them both would overextend the shock.
     
  7. Nick #1

    Nick #1 Junior Member

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    Yes you can install both. For the passenger side front spring it's somewhat difficult. I had to cut part of the subframe to get the CV axle to clear so you can install it. Though now that I think about it, you could probably just loosen the 4 subframe bolts and drop it about half an inch since that's all you need.
     
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  8. black_jmyntrn

    black_jmyntrn Active Member

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    In the rear, for sure no, you would be over-extending the strut. An aftermarket part to allow for this is in development now; however, you still shouldn't do the spring riser from a lift kit on a spring that provides lift as the spring design/dynamics would be altered. When I mentioned this exact scenario to the spring manufacturer, they strongly discouraged this scenario as the angle of the spring with the lift would compromise it or other. I don't remember verbatim but this would apply to a larger rear spring lifter on the OEM spring. There becomes a point where you are compromising the integrity of the car and parts installed.

    In the front, it might work, but I'm not cutting anything personally, just to achieve my goal. loosening the bolts IMO is also something not on the agenda. There is e a solution that alleviates your suggestions and testing begins soon. Before my next trip, the whole front end suspension is being re-done and if all goes right a motor swap, not from a Prius, a 2.0L. The clearance needed is less than a 1/2", thing is since the lift, makes you lower subframe, what else do you modify that changed by dropping subframe 1/2" along with the lift? I plan to find out but that has to be thought through before cutting. lol, I love our style though, reminds me of myself in the pre-FNF movie street racing days.
     
  9. Plaman

    Plaman Member

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    How would the strut be overextended? The Prius Offroad kit is just a spacer that goes on top of the suspension. Of course it would change the suspension geometry but that's also kind of the point, right?
     
  10. black_jmyntrn

    black_jmyntrn Active Member

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    so we are in sync. I was referring to the rear. The rear has a spacer that goes under the spring. So, you would have a spring that extended the shock and a spring lifter extending it even more. I'm trying to find the pictures from that day. I need t get better at tagging my pictures to find later.
     
  11. black_jmyntrn

    black_jmyntrn Active Member

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    have a look here...
     

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  12. SFO

    SFO Senior Member

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    Interesting install, how much extra height does it provide and is someone actually selling that master hack?
     
  13. dolj

    dolj Senior Member

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    That doesn't look much like a Gen 2 rear suspension.
     
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  14. wjuice

    wjuice New Member

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    Hey just trying to clarify— these Toyota Matrix springs bolted on with no modifications to a gen 2 Prius and ended up with a lift? Looking to do this in the rear of my 2005 as I have a bike rack that weighs down the rear. Thanks in advance
     
  15. black_jmyntrn

    black_jmyntrn Active Member

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  16. Plaman

    Plaman Member

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    Did you install the Heavy-Duty or Super-Duty springs in this photo?
     
  17. black_jmyntrn

    black_jmyntrn Active Member

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    heavy duty with a 1.5" lift kit.
     
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  18. SFO

    SFO Senior Member

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    Concur, not a gen2. But those meaty tires make it look cool.

    It doesn't look very safe, and appears a spring could pop out at any moment, or maybe someone used a fisheye lens for the photo o_O

    [​IMG]
     
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  19. JahT

    JahT Member

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    You mentioned earlier that the rear lift required a spacer in the spring, but now they have spacers that just go on top of the struct for both front and rear. I assume your picture shows the Matrix struts (w Heavy Duty springs) and the top-of-strut spacers in the rear, correct?
     
  20. black_jmyntrn

    black_jmyntrn Active Member

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    In my Gen 3, I used a spring spacer on my Toyota Prius initially with the 1.5" lift so my tires wouldn't rub.

    The Gen 2 in this I believe I the disconnect, I have a Gen 3.

    Which picture? The black prius? if so, no, there is no way id endorse the use of the Matrix spring, and I at one time of my life was all about the homebrew, hack to work modifications. I mean sure I've ground off a part on a strut to fit a Coilover kit but that was back in the late 99, the early 00s before I had my first AMG. These days id rather have something custom-made (like my bbk) versus a hack it to work job. Not to take anything away from the Matrix spring supporting group just something I wouldn't do.
     
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