VQ Valve Spring spec. charts

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Apr 30, 2007 | 12:21 PM
  #41  
Quote: I am revving to 7500 now with the stock valve springs and cams. But there is still no guarantee that the HR springs will do the job to 7500 on cams that have 1.32mm more loft and 24* more duration than the VQ35 OE cams.

There is only one way that question can be answered. Someone has to do it.
Soon..........
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Apr 30, 2007 | 03:24 PM
  #42  
I just confirmed with Nissan FAST and DAVEB that the VQ35DE REVUP valve retainers are the exact same part number as the VQ35HR valve retainers.

NEW retainer part# 13209-AC700 VQ35DE (REVUP), VQ35HR


OLD retainer part# 13209-6N200 (VQ35DE)


Get pricing from Dave Burnette or your local Nissan parts department.

http://www.vq35de.com/Images/valvesp...etainers01.jpg
http://www.vq35de.com/Images/valvesp...etainers02.jpg
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Apr 30, 2007 | 05:41 PM
  #43  
Very nice, I've no doubt they can handle the job of an aggressive cam at 7500.
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Apr 30, 2007 | 07:37 PM
  #44  
Quote: I just confirmed with Nissan FAST and DAVEB that the VQ35DE REVUP valve retainers are the exact same part number as the VQ35HR valve retainers.

NEW retainer part# 13209-AC700

OLD retainer part# 13209-6N200


Get pricing from Dave Burnette or your local Nissan parts department.

http://www.vq35de.com/Images/valvesp...etainers01.jpg
http://www.vq35de.com/Images/valvesp...etainers02.jpg
sorry, i dont know why i keep getting confused.

so part number is the same. but what is new and old retainer part number? is old the vq35de (fwd)? and the new the rev up/hr?
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Apr 30, 2007 | 08:32 PM
  #45  
Quote: sorry, i dont know why i keep getting confused.

so part number is the same. but what is new and old retainer part number? is old the vq35de (fwd)? and the new the rev up/hr?
new=HR/revup
old=VQ35DE all except revup
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Dec 9, 2007 | 06:33 AM
  #46  
Where do you guys get the HR spring & retainer ?
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Dec 9, 2007 | 09:58 AM
  #47  
Dealer
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Dec 9, 2007 | 10:43 AM
  #48  
DaveB FTBargain...
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Dec 9, 2007 | 10:50 AM
  #49  
I got mine from Dave B
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Dec 9, 2007 | 12:19 PM
  #50  
Quote:
This means that even with 11mm lift cams you can double shim the HR spring to raise the seat pressure and still not get coil bind (for a total of 12mm effective spring lift pressure).
Good info.
If you could excuse my newbie'ness to this field, I have a question.
Double shim what? I got lost there. I understand what a shim is, and what coil bound is, but whats the gain of double shimming? Where is the shim placed?
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Dec 9, 2007 | 01:04 PM
  #51  
Quote: Good info.
If you could excuse my newbie'ness to this field, I have a question.
Double shim what? I got lost there. I understand what a shim is, and what coil bound is, but whats the gain of double shimming? Where is the shim placed?
Shimming increases the seat pressure of the spring by preloading it. The shim goes between the spring seat and the spring.

Also, double shimming isn't absolutely necessary. It depends on the requirements of your particular setup.
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Dec 9, 2007 | 01:14 PM
  #52  
Quote: Shimming increases the seat pressure of the spring by preloading it. The shim goes between the spring seat and the spring.

Also, double shimming isn't absolutely necessary. It depends on the requirements of your particular setup.
Thanks. I will look at the FSM in detail.
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Apr 8, 2015 | 08:34 AM
  #53  
Any chance the images can be reposted if anyone downloaded them? The site that was/is hosting them is locked down.
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