HPD suspension: knocking when cold?? - Page 8 - Honda CRZ Forum: Honda CR-Z Hybrid Car Forums
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post #71 of 85 (permalink) Old 01-16-2018, 01:20 AM
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Not that I know of. Or, it'd cost more than a new strut.
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post #72 of 85 (permalink) Old 04-21-2019, 10:34 PM
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I have been driving my car with the new HPD suspension installed for like 6 months now, and it was all quiet up until it got freezing cold (0 degrees) a couple of days ago.

Now when I go over small bumps (only seems to do it on some bumps), the drivers side (and possibly passenger) seem to knock pretty hard.

Sway bar end links are brand new moog, top hats are brand new, all rubber is brand new.

Any ideas what to look for? Maybe its just the struts themselves being so cold? I feel like the problem goes away a bit as it warms up, but, hard to tell because it never fully 'warms up' since its about 0 degrees outside right now.

Looking for ideas.

The moog sway bar end links take grease, and I'm wondering if they might need more? Or possibly the grease is just frozen?

FINAL OUTCOME: STRUT WAS BLOWN. REPLACED STRUT, ALL PERFECT AGAIN!!

Gonna dig this thread out of the grave.... So how is the HPD suspension/strut holding up since you replaced the blown one ? How many miles have you driven since then ? Thanks

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post #73 of 85 (permalink) Old 04-22-2019, 06:14 AM Thread Starter
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Originally Posted by d1giPhux View Post
I have been driving my car with the new HPD suspension installed for like 6 months now, and it was all quiet up until it got freezing cold (0 degrees) a couple of days ago.

Now when I go over small bumps (only seems to do it on some bumps), the drivers side (and possibly passenger) seem to knock pretty hard.

Sway bar end links are brand new moog, top hats are brand new, all rubber is brand new.

Any ideas what to look for? Maybe its just the struts themselves being so cold? I feel like the problem goes away a bit as it warms up, but, hard to tell because it never fully 'warms up' since its about 0 degrees outside right now.

Looking for ideas.

The moog sway bar end links take grease, and I'm wondering if they might need more? Or possibly the grease is just frozen?

FINAL OUTCOME: STRUT WAS BLOWN. REPLACED STRUT, ALL PERFECT AGAIN!!

Gonna dig this thread out of the grave.... So how is the HPD suspension/strut holding up since you replaced the blown one ? How many miles have you driven since then ? Thanks
They were driving great. Up until I ran into a telephone pole. However, they will be swapped onto my new crz soon. Maybe within the next couple of weeks if it's nice out and I can get the car up on blocks (the old car). Don't think smashing into the pole would have done anything, but, if it did, I'm going to spend another $1200 for this setup because it rocks! Hopefully I don't have to though!
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post #74 of 85 (permalink) Old 04-22-2019, 07:54 AM
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They were driving great. Up until I ran into a telephone pole. However, they will be swapped onto my new crz soon. Maybe within the next couple of weeks if it's nice out and I can get the car up on blocks (the old car). Don't think smashing into the pole would have done anything, but, if it did, I'm going to spend another $1200 for this setup because it rocks! Hopefully I don't have to though!


Thanks for the info and Iím sorry that happened. Yea I donít think suspension was damaged if itís just frontal collision. I know the HPD is good. I am still debating if I should just go with Koni + lowering spring setup. Itís because 4 shocks replacement in total is same price as one Showa/HPD shock replacement.... I do want to keep the car for a long time and that why I am curious how long the HPD setup is gonna last...

i wonder if Koni can be used as replacement for the HPD Springs.... this topic has been covered right ?

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post #75 of 85 (permalink) Old 04-22-2019, 12:47 PM Thread Starter
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Thanks for the info and Iím sorry that happened. Yea I donít think suspension was damaged if itís just frontal collision. I know the HPD is good. I am still debating if I should just go with Koni + lowering spring setup. Itís because 4 shocks replacement in total is same price as one Showa/HPD shock replacement.... I do want to keep the car for a long time and that why I am curious how long the HPD setup is gonna last...

i wonder if Koni can be used as replacement for the HPD Springs.... this topic has been covered right ?
You get what you pay for.. thats all I can say. The HPD kit is well worth the money. I don't think you can find anything else near the level of performance and comfort in driving for this vehicle. It would be hard...
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post #76 of 85 (permalink) Old 04-22-2019, 12:59 PM
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HPD suspension: knocking when cold??

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Originally Posted by d1giPhux View Post
You get what you pay for.. thats all I can say. The HPD kit is well worth the money. I don't think you can find anything else near the level of performance and comfort in driving for this vehicle. It would be hard...


Oh trust me. I know HPD parts are solid. I have the HPD exhaust myself. Itís definitely a high quality product

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post #77 of 85 (permalink) Old 04-23-2019, 08:21 AM
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I second the HPD exhaust. Added a Tegiwa downpipe to the exhaust and she can get rowdy in the upper RPM's. Still not quite as loud as the open header civics though.
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2011 CPB CRZ
Suspension work, intake, exhaust/2nd decat
2017 Black EcoBoost Mustang
Suspension work, Bolt-ons, BAMA tune
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post #78 of 85 (permalink) Old 04-23-2019, 08:56 AM
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I second the HPD exhaust. Added a Tegiwa downpipe to the exhaust and she can get rowdy in the upper RPM's. Still not quite as loud as the open header civics though.


Nice ! I wish I could add any sort of downpipe at all but exhaust sound level is pretty strict here in California. I would have done the same

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post #79 of 85 (permalink) Old 04-23-2019, 10:01 AM
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I'll have to do some decibel testing on my exhaust setup. I'm pretty sure it would still meet Cali exhaust regulations. My z is still much quieter then the EcoBoost even on cold starts. Now if you remove both cats and straight pipe the Z then that would be a different story.
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post #80 of 85 (permalink) Old 04-23-2019, 11:31 AM
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Originally Posted by tikeybun View Post
I'll have to do some decibel testing on my exhaust setup. I'm pretty sure it would still meet Cali exhaust regulations. My z is still much quieter then the EcoBoost even on cold starts. Now if you remove both cats and straight pipe the Z then that would be a different story.


I am curious if you pass that regulation. If your decibel is under, then I will be very interested in getting one

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