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JDM ITR intake springs

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Old Nov 8, 2001 | 07:24 AM
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Default JDM ITR intake springs

Hey Mike,

Is it true?? 15% stiffer than USDM ITR



[Modified by BlueR, 11:51 AM 11/8/2001]
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Old Nov 8, 2001 | 09:04 AM
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Default Re: JDM ITR intake springs (BlueR)

I wanna know too. Im probably gonna buy them $85 is pretty good price.
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Old Nov 8, 2001 | 10:29 AM
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Default Re: JDM ITR intake springs (Big Teggie)

I'm curious to see what part number TypeRmsm comes up with..

14761-P73-J01 = 97/98 Intake Outer
14751-P73-J01 = 97/98 Intake Inner
14761-P73-J02 = 00/01 Intake Outer
14751-P73-J02 = 00/01 Intake Inner
?????-P73-??? = JDM spring??
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Old Nov 8, 2001 | 10:42 AM
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Default Re: JDM ITR intake springs (Mike K)

Looks like the same part numbers:

14761-P73-J01 = JDM 96Spec Outer
14751-P73-J01 = JDM 96Spec Inner
14761-P73-J02 = JDM 98Spec Outer
14751-P73-J02 = JDM 98Spec Inner

Mike
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Old Nov 8, 2001 | 10:50 AM
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Default Re: JDM ITR intake springs (Mike K)

Mike K wut is the difference between 97-98's and 00-01's???
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Old Nov 8, 2001 | 11:16 AM
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Default Re: JDM ITR intake springs (sackdz)

Just verified it, 98 Spec JDM Valve springs are the same as the 00-01 US Ones, Which are stiffer than the 96 spec JDM and 97-99 USDM
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Old Nov 8, 2001 | 11:17 AM
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Default Re: JDM ITR intake springs (TypeRmsm)

so the USDM 98 spec valve springs are different from the USDM 00/01 spec springs?

scratching my head here!


[Modified by BlueR, 3:19 PM 11/8/2001]
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Old Nov 8, 2001 | 11:20 AM
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Default Re: JDM ITR intake springs (TypeRmsm)

Oh and its $85 for the Inner and outer Spring set
Acura's price is $184.24
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Old Nov 8, 2001 | 11:39 AM
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Default Re: JDM ITR intake springs (TypeRmsm)

Man, I remember when the 00's first came out, everyone was talking about if it was faster or not, and what were the differences besides color, interior trim, wheels, and AC. No one ever mentioned anything about stiffer valvesprings.
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Old Apr 20, 2016 | 11:34 PM
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Default Re: JDM ITR intake springs

yea I dug it out lol
so why did acura have different part number for 00-01 intake springs?

I looked everywhere and cant find specs on them

or difference from the 97 -99 springs that are now listed as p72 springs for both intake and exhaust side


from team integra..

why would Honda go through all the trouble of changing part number for identical spring to gsr?
Acura USDM/JDM GSR INTAKE SIDE oNLY Valve Springs
Variable or Linear: Linear
Seat Pressure: 50lbs
Max Lift: 11.5mm
Coil Bind: 11.7mm
Pressure @ 11.5mm/.453" lift: 150lbs

Acura USDM 98-01/JDM 96-01 ITR Valve Springs
Variable or Linear: Linear
Seat Pressure: 50lbs
Max Lift: 11.5mm
Coil Bind: 11.7mm
Pressure @ 11.5mm/.453" lift: 150lbs


speaking of. what happened to blueR? he kinda just disappeared from here just like the redSIR. I never got to send him a starbucks gift card for his help lol
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Old Apr 21, 2016 | 09:39 AM
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Default Re: JDM ITR intake springs

wow 15 years later the mystery unravels, LOL
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Old Apr 21, 2016 | 09:12 PM
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Default Re: JDM ITR intake springs

So has anyone tested
97/98 vs 00-01 intake springs?

im thinking of putting the gsr dual springs on intake and exhaust unless someone can confirm that the 00-01usdm itr intake springs are in fact stiffer than 97-98 usdm itr

15 years later...
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Old Apr 24, 2016 | 12:49 PM
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Default Re: JDM ITR intake springs

I thought the Type-R brochure mentioned that the wire was "oval" shaped to allow greater lift before coil bind.

See Page 8: http://www.andysautosport.com/images...ical-guide.pdf

Originally Posted by brochure
Cylinder head, Valves and Camshafts.
The intake and exhaust ports are hand polished
in the area near the valve seat to
ensure optimal, non turbulent gas flow for
increased power. In addition, lightweight
intake valves and oval section dual intake
valve spring are used. The oval section
allows the use of high performance
camshafts
to increase flow at high rpm. And
specially designed, lighter weight valves
help raise the rpm limit of the Type R engine
by an additional 200 rpm.
BTW:
97 US ITR currently lists 14750-P73-305 as the part number for both intake springs sold together (out of stock).
01 US ITR currently lists 14751-P73-J02 as the inner and 14761-P73-J02 as the outer (sold separately)

Last edited by 94eg!; Apr 25, 2016 at 08:52 AM.
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Old Apr 24, 2016 | 07:27 PM
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Default Re: JDM ITR intake springs

must have been a typo then
I checked few years ago and it listed p72 dual springs for intake and exhaust for 97 itr

now it lists the combo p73 for intake but it seems to be out of stock
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Old Apr 25, 2016 | 08:52 AM
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Default Re: JDM ITR intake springs

Sorry my post was supposed to say "Out of stock" for P73-305 instead of "Not out of stock". Typo on my part. I fixed it.

BTW: I checked the japanese parts sites and they list the exact same P73 part#'s for the 97 vs 00.
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Old Apr 25, 2016 | 11:52 AM
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Default Re: JDM ITR intake springs

where do you go for Japanese parts?
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Old Apr 25, 2016 | 01:46 PM
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Default Re: JDM ITR intake springs

jp-carparts.com

Doesn't say if they are discontinued or not though. It also just lists all parts for all trims at the same time for a given year/make/model (even though you pick more than just trim). Not the best, but still good for finding part numbers.
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Old Apr 26, 2016 | 08:15 AM
  #18  
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Default Re: JDM ITR intake springs

This isn't really a mystery.

The USDM 00-01 R had a slightly more aggressive intake cam then the USDM 97-98 R. My guess is that's why Acura changed up the valve springs.
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