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Prodrive P1 Lowering Springs - Rare Purchase opportunity.

Old 09 June 2014, 09:03 PM
  #121  
Scott.T
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Originally Posted by 2pot View Post
Update:
Myself and Scott, are in a 3-way conversation with the designer of the P1 and WR99 suspensions.
Taking various struts to Bilstein, next week, for measurements.
Prototype 6 in 2 weeks.
Are we there yet !!!!!!
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Old 26 June 2014, 11:57 AM
  #122  
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Originally Posted by Scott.T View Post
Are we there yet !!!!!!
Not far!

Visiting Eibach, with samples, on Monday.
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Old 02 July 2014, 05:48 PM
  #123  
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Bare me in mind please gents as and when because I may well also be interested in a set of springs for mine. I'll keep an eye on this thread from now on too.
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Old 02 July 2014, 08:17 PM
  #124  
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With leverage from the original designer, Eibach will do a minimum 25 set production run, of the P1 spring set.

Part of the P1 suspension design remit, was comfort over longer distances.
After passing on the info/samples, that Scott and I have accumulated, Eibach are also investigating a lowered possibility.
Less compliant rear - same height as the jdm 22b/wr99 - 6mm lower than P1.
Less compliant front - 13mm taller than early, closed, ground top, wr blue/ 8mm taller than the lowered version sti pink -10mm lower than P1.
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Old 03 July 2014, 06:23 PM
  #125  
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I'm interested in the lowered option for Bilsteins please
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Old 03 July 2014, 09:32 PM
  #126  
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Originally Posted by 2pot View Post
With leverage from the original designer, Eibach will do a minimum 25 set production run, of the P1 spring set.

Part of the P1 suspension design remit, was comfort over longer distances.
After passing on the info/samples, that Scott and I have accumulated, Eibach are also investigating a lowered possibility.
Less compliant rear - same height as the jdm 22b/wr99 - 6mm lower than P1.
Less compliant front - 13mm taller than early, closed, ground top, wr blue/ 8mm taller than the lowered version sti pink -10mm lower than P1.
Not sure that front will be 10mm lower then P1.
P1's are measuring 640-645mm on the front & rear (approx.) floor to arch (0n 18s 35 profile)
Pinks Measure 630-632mm (approx.)
WR Blues 625mm (approx.)

Great that we now have Eibach & Co on side though.....

Last edited by Scott.T; 03 July 2014 at 09:53 PM.
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Old 04 July 2014, 10:56 AM
  #127  
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Originally Posted by Scott.T View Post
Not sure that front will be 10mm lower then P1.
P1's are measuring 640-645mm on the front & rear (approx.) floor to arch (0n 18s 35 profile)
Pinks Measure 630-632mm (approx.)
WR Blues 625mm (approx.)

Great that we now have Eibach & Co on side though.....
10mm lower than a brand new set of front P1 springs, measured at 648mm.
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Old 04 July 2014, 11:43 AM
  #128  
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Originally Posted by 2pot View Post
10mm lower than a brand new set of front P1 springs, measured at 648mm.
Ok right. Point taken.
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Old 25 July 2014, 08:03 PM
  #129  
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update on these springs?!?!
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Old 25 July 2014, 10:29 PM
  #130  
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Would it help (or hinder?) this group buy if another Prodrive spring was thrown in the mix to help boost the quantities and be more of an incentive to the supplier?

I'm thinking the Prodrive blue spring for Blobeye/Hawkeye WRX, part numbers W03/D5/001 (2004+ WRX Sports spring kit) and UW4/D5/001 (2004+ WRX spring kit) not sure what the difference is, if any.

These seem to be very hard to come by used (bugeye versions seem more common).

Only a thought as I've been looking for months.
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Old 26 July 2014, 11:58 AM
  #131  
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Eibach have agreed to do a minimum run of 25 sets of P1 springs.
They are currently designing a lowered version, taking into account what we have learned, so far, and latest spring technology.
If Bilstein care to send the rest of the data, from the mid-June strut test, then things can move forward more quickly.
The P1 springs will become available, minimum numbers permitting, at the same stage as the lowered and excel-g versions.
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Old 26 July 2014, 12:09 PM
  #132  
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Originally Posted by modrich View Post
Would it help (or hinder?) this group buy if another Prodrive spring was thrown in the mix to help boost the quantities and be more of an incentive to the supplier?

I'm thinking the Prodrive blue spring for Blobeye/Hawkeye WRX, part numbers W03/D5/001 (2004+ WRX Sports spring kit) and UW4/D5/001 (2004+ WRX spring kit) not sure what the difference is, if any.

These seem to be very hard to come by used (bugeye versions seem more common).

Only a thought as I've been looking for months.
YHPM
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Old 26 July 2014, 02:22 PM
  #133  
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Thanks 2POT!
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Old 26 July 2014, 04:32 PM
  #134  
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Is there any indication on price ???
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Old 26 July 2014, 09:22 PM
  #135  
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I still want a full set of new standard P1 springs! Great effort all involved.
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Old 28 July 2014, 02:50 PM
  #136  
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any idea's of prices for any of these springs???
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Old 28 July 2014, 03:48 PM
  #137  
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In 25's, in silicon chrome, with a phosphate undercoat, beneath the finish and a geometry sheet, they should be around 270 delivered.
It's very quantity dependent though. A ground top coil also adds cost.
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Old 28 July 2014, 03:55 PM
  #138  
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I'm in for a set of the original P1 spring replicas
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Old 28 July 2014, 06:32 PM
  #139  
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Originally Posted by twistybits View Post
I'm in for a set of the original P1 spring replicas
+1
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Old 29 July 2014, 12:32 AM
  #140  
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Default blown struts

Noob here. I am thinking about buying struts now instead of waiting on these springs since one of my struts blew. Right now I am thinking about getting the KYB Excel g's since I do not plan on tracking this car and just want a car that's great to handle on the streets. If I go with the lowered versions of this spring on my KYB Excel g's, will this be setup be ideal? What are the differences in ordering the lowered versions vs the P1 spring set?
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Old 30 July 2014, 01:27 PM
  #141  
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Phrozen, funny enough i am in the same position as you, just about to order the KYB Excel G Kit for my JDM 95 WRX, so I also would be interested in the answer for this, I was looking at the Eibach Pro Kit Lowering Springs but hell if I can fit a set of P1 replicas (lowered/not lowered) then I AM IN!!!!!
just need some sound advice

thank you in advance

Ant
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Old 30 July 2014, 04:49 PM
  #142  
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P1 springs were designed for use on a KYB inverted strut.
P1 springs were also, subsequently, paired with Bilstein inverted struts.

The distance between the top and bottom mounting cups is longer on KYB Excel-g's/AGX's. You really need a longer free spring length.
Moreover, can Excel-g's stand the stress of P1 spring rates? Measurements of Excel-g struts have just arrived.
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Old 31 July 2014, 11:49 AM
  #143  
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Thank you for clarification
thats a shame

good luck
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Old 31 July 2014, 12:15 PM
  #144  
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Originally Posted by anthonyreading View Post
Thank you for clarification
thats a shame

good luck
I think something got lost in translation.
We are investigating a spring set for the excel-g, as well.
Yesterdays data is being considered, to see what rates are most appropriate, for the excel-g.
HTH
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Old 31 July 2014, 10:54 PM
  #145  
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Mark,
Having just rebuilt a set of P1 struts and re-fitted them with the P1 springs. I noticed how the P1 springs fitted a lot easier to the P1 strut then they did on my Bilstein.

The Bilstein damper free length is a little shorter and hence you need a fair bit of effort on the spring compressors to get the P1 spring on, along with the top hats etc....
Of all the springs I have fitted to my Bilsteins, over the last few months, the P1 rear was the biggest PITA of them all (trashed the new powder coat too ).
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Old 05 August 2014, 02:00 PM
  #146  
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Originally Posted by Scott.T View Post
Mark,
Having just rebuilt a set of P1 struts and re-fitted them with the P1 springs. I noticed how the P1 springs fitted a lot easier to the P1 strut then they did on my Bilstein.

The Bilstein damper free length is a little shorter and hence you need a fair bit of effort on the spring compressors to get the P1 spring on, along with the top hats etc....
Of all the springs I have fitted to my Bilsteins, over the last few months, the P1 rear was the biggest PITA of them all (trashed the new powder coat too ).
How did you rebuild the P1 struts? I thought they weren't servicable?
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Old 11 August 2014, 10:46 PM
  #147  
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How are these coming along, any news on the ones for the Excel G/ AGX shocks?
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Old 11 August 2014, 10:51 PM
  #148  
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Originally Posted by P1_Bagz View Post
How did you rebuild the P1 struts? I thought they weren't servicable?
I guess he means changed the bushes of the inserts?
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Old 11 August 2014, 11:01 PM
  #149  
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Originally Posted by topshot View Post
How are these coming along, any news on the ones for the Excel G/ AGX shocks?
Eibach were finishing off their latest re-designs today.
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Old 11 August 2014, 11:12 PM
  #150  
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Nice one, Mine is coming off road in autumn for brake rebuild and new shocks, hopefully these will be ready to buy!
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