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NAG Crankcase Pressure Relief Valves

[Crankcase internal pressure controller & blow off valve] [Development diary] [Impression] [Explanation] [Q&A]
Cover 2.jpg (76465 bytes) Cover 1.jpg (135352 bytes) Cover 4.jpg (87064 bytes) CUT2.jpg (85280 bytes) vtr1.jpg (69160 bytes) xjr2.jpg (63488 bytes)

In most internal combustion engines, it is best to maintain pressure within the engine crankcase below atmospheric pressure thereby reducing leaks through gaskets and seals from the crankcase to the atmosphere. And so as not to rob any horsepower driving the unnecessary air pump created by piston movement. You do not want the crankcase vacuum to be excessive, which would cause out side air and debris to be pulled through any worn crankcase seals or gaskets. The NAG Crankcase Pressure Relief Valves maintain a slight crankcase vacuum and maintain a negative vacuum at any engine speed or load.

The addition of a Blow off valve will eliminate the slight leanness created with the pressure increase in the air box while under braking. This device will blow off the excess pressure.

When by the ram pressure specification motorcycle, the crankcase internal pressure controller is selected, please verify the below-mentioned contents and select.

Example 1) For in town riding, an some highway at normal speeds.
(First only the crankcase internal pressure controller. As for the blow off valve for the street, consider as additional purchase. )

Example 2) For use on the race circuit for track days and schools while still riding the machine for transportation.
(Crankcase internal pressure controller and blow off valve for street recommendation. )

Example 3) When used for race circuit exclusively use the models for race only specification.
(Crankcase internal pressure controller and blow off valve for race/lace recommendation. )

Example 4) When used for race circuit exclusively use the models for race only specification. If participating in championship races and need for most functionality (Check local rules which may prohibited the use of any device which requires OEM air box modification..
(Air shot functional equipped crankcase internal pressure controller and blow off valve for race/lace recommendation. )

Crankcase internal pressure controller model exclusive use
  (It is enabled with the single item, but, combined use with the blow off valve is effective in the ram pressure car)

  Product code Application model Remark    

ducati_1.jpg (44889 bytes)

NAG01-101R
NAG01-101B
NAG01-101G
NAG01-101S

For DUCATI
999/999S/900SS/ST2/916R
996R/748R/749R/ST4S/S4R
MultiStrada1000DS/SS1000DS
Monster 400/F4

Breather tower
(Blow off valve combined use is recommended to the ram pressure car)
The color are 4 types.
Red, black and [shiyanpengorudo], oxalic acid
 

nag01-111s.jpg (196095 bytes)

NAG01-111R
NAG01-111B
NAG01-111G
NAG01-111S

For DUCATI
1098

Breather tower
(Blow off valve combined use is recommended to the ram pressure car)
The color are 4 types.
Red, black and [shiyanpengorudo]
 

nag01_103.jpg (61495 bytes)

NAG01-103 MOTO GUZZI

In case of [chiyuntauro]
(NAG01-009)
There is a oil erupting prevention effect
The installation place changes with the presence of remodelling. Please be sure to do to inquire.
   
nag01-104.jpg (40612 bytes) NAG01-104 VTR1000F exclusive use For 16φ street    
nag01_105.jpg (29871 bytes) NAG01-105 VTR1000SP1/SP2 exclusive use

VTR1000SP1/SP2 exclusive use for 12φ street
(Blow off valve combined use is recommended)
        Adaptation item turn NAG03-104

   
nag01-106.jpg (53037 bytes) NAG01-106 Z1000 exclusive use (04) For 12φ street
(NAG01-012) + (NAG00-010)
   
nag01-105.jpg (77941 bytes) NAG01-107

Harley FX/DX

Breather pipe
In the type which is not the rubber hose joint in opening
Set of ramming down joint
   
nag06-103.jpg (46421 bytes) NAG01-108 The tuning car of APE and the like
For street under 100cc
9φ HONDA type adapter
9φ controller
(NAG00-002) + (NAG01-009)
   
nag06-104.jpg (56081 bytes) NAG01-109 The tuning car of APE and the like
For street above 100cc
12φHONDA adapter
12φ controller
(NAG00-001) + (NAG01-012)
   

nag06-104r.jpg (52484 bytes)

NAG01-109R The tuning car of APE and the like
For race/lace above 100cc
(For circuit travelling)
12φ HONDA type adapter
12φ controller
(NAG00-001) + (NAG01-012R)
   
nag01-110r.jpg (87895 bytes) NAG01-110R CBR600RR (07) exclusive use For circuit
You install with volt/bolt on, possibility
The NAG02-04 blow off valve is jointly used
 

Crankcase internal pressure controller
  (It is enabled with the single item, but, combined use with the blow off valve is effective in the ram pressure car)
When there is no application model, please measure the inside diameter of the breather hose and choose optimum size.

  Product code Application model Remark    

nag01-102.jpg (51321 bytes)

NAG01-102

ZRX1100/1200
CRF450
ER-6F (06)

Breather hose inserting section diameter 12φ→10φ
Street exclusive use
The grommet of the photograph became abolition.
   
nag01-009.jpg (54028 bytes) NAG01-009 APE50/100
CUB
RTL250S
RTL250F
KXF250 (07)
MOTO GUZZI ([chientauro])
Zepher 400χ ([kai])
Address V50
Breather hose inserting section diameter 9φ
Street exclusive use
   

nag01-012.jpg (49694 bytes)

NAG01-012 FTR223
TW250
FJ1200
[sero] 250 (05)
XJ750E/A (81) /XJR1200
GSX-R1000/600
DR800/DR650SE (cell attachment)
SV400/SV650
GSX-1100S sword
GS400 (under HiAce 97HED)
Z1-R
KSR110
GPZ900R
900RS Z1/750RS Z2
SPADA
VMAX
CBR900RR (98)
BMW R80G/S /BMW R100
TL1000
VOR450
CRF250R (07)
Address 125V
Breather hose inserting section diameter 12φ
Street exclusive use
(Blow off valve combined use is recommended to the ram pressure car)
 
nag01-012r.jpg (51169 bytes) NAG01-012R YZ250F Breather hose inserting section diameter 12φ
For circuit
(Blow off valve combined use is recommended to the ram pressure car)
   
nag01-012s.jpg (50857 bytes) NAG01-012S XJR1200 (air cooling)
ZRX1200R (04)
Goose 350
Breather hose inserting section diameter 12φ
Street private short type
(Blow off valve combined use is recommended to the ram pressure car)
   

nag01-014.jpg (47982 bytes)

NAG01-014 SRX400/SRX400 (cell attachment)
SRX600/SRX600 (cell attachment)
ZX-6R (05-06)
KLX250
Husqvarna SM450R
CBX250S (4 cylinders)
VTR250
CBR600RR (03-06)
CBR1000RR (04-07)
RC30
R-1 (00)
ZX10R (07)
Breather hose inserting section diameter 14φ
Street exclusive use
(Blow off valve combined use is recommended to the ram pressure car)
 

nag01-014r.jpg (48566 bytes)

NAG01-014R - Breather hose inserting section diameter 14φ
For circuit
(Blow off valve combined use is recommended to the ram pressure car)
   
nag01-016.jpg (51952 bytes) NAG01-016

SR400/500
ZX-6R (07)
ZR1100 (98) C2
ZX-12R (00-02)
AGUSTA F4
GASGAS 450EL
SUPER SHERPA
SV1000S

Breather hose inserting section diameter 16φ
Street exclusive use
(Blow off valve combined use is recommended to the ram pressure car)
 
nag01-016r.jpg (52269 bytes) NAG01-016R

-

Breather hose inserting section diameter 16φ
For circuit
(Blow off valve combined use is recommended to the ram pressure car)
   
nag01_018.jpg (49919 bytes) NAG01-018 - Breather hose inserting section diameter 18φ
Street exclusive use
(Blow off valve combined use is recommended to the ram pressure car)
   
nag01_018r.jpg (44871 bytes) NAG01-018R - Breather hose inserting section diameter 18φ
For circuit
(Blow off valve combined use is recommended to the ram pressure car)
   
nag01-020.jpg (47554 bytes) NAG01-020 DUCATI bevel TYPE
TRX850
BMW R1150
Breather hose inserting section diameter 20φ
Street exclusive use
(Blow off valve combined use is recommended to the ram pressure car)
 

nag01-020.jpg (84969 bytes)

NAG01-020R - Breather hose inserting section diameter 20φ
For circuit
(Blow off valve combined use is recommended to the ram pressure car)
   
nag04-012r.jpg (26583 bytes) NAG01-112RR Ram pressure specification car RACE Breather hose inserting section diameter 12φ
For circuit
Air shot mechanism is jointly used.
The SET part of NAG04-112 and NAG04-112R
Note: You cannot use with the single item.
   
nag04-014r.jpg (18588 bytes) NAG01-114RR Ram pressure specification car RACE Breather hose inserting section diameter 14φ
For circuit
Air shot mechanism is jointly used.
The SET part of NAG04-114 and NAG04-114R
Note: You cannot use with the single item.
   

Blow off valve 

  Product code Trade name Remark application model    
nag02-01.jpg (36947 bytes) NAG02-01 Blow off valve STREET For street
(Sport travelling of circuit)
   
nag02-02.jpg (96938 bytes) NAG02-02 Blow off valve RACE For race/lace
If (it is the even place, the top and bottom, left and right,
Approximately you install with any direction, possibility. )
 
nag02-03.jpg (83934 bytes) NAG02-03 Blow off valve Halley exclusive use [kuriakinkurina] box
[hare] all type
   
nag03-04.jpg (100486 bytes) NAG02-04 Blow off valve RACE CBR600RR (07) for 15φ race/lace  
nag03-102.jpg (55797 bytes) NAG03-102 Blow off valve STREET
Adapter SET
RAM specification car
For street BUELL DUCATI 
(Sport travelling of circuit)
Boring the hole through the RAM BOX, the type which it inserts
   
nag03-103.jpg (53370 bytes) NAG03-103 Blow off valve STREET
Adapter SET 13φ
RAM specification car
For 13φ street
(Sport travelling of circuit)
In RAM BOX drain installation valve major diameter 13φ
   
nag03-104.jpg (58058 bytes) NAG03-104 Blow off valve STREET
Adapter SET 14φ
RAM specification car
For 14φ street
(Sport travelling of circuit)
In RAM BOX drain installation valve major diameter 14φ
   

Installation adapter (small part)

  Product code Trade name Remark application model    

nag00-001.jpg (63748 bytes)

NAG00-001 12φ oil filler cap AD HONDA (based engine 50cc)
For race/lace above 100cc
M20*2.5
   

nag00-002.jpg (58226 bytes)

NAG00-002 9φ oil filler cap AD HONDA (based engine 50cc)
For street under 100cc
M20*2.5
   
nag00-004.jpg (88801 bytes) NAG00-004 [supeisa] for VB type standard cab For [hare] VB type standard cab
Simple RAM system usage time (FXDX and the like)
Reaction late measure of [akuseruon] off
   

nag00-005.jpg (71100 bytes)

NAG00-005 Joint for [hare] [hare]
The car which is not the removal of the breather pipe 輌 business
   
nag06-006.jpg (26295 bytes) NAG00-006 Funnel (03-04 previous term) BUELL XB RAM pressure specification car    
nag00-010.jpg (47815 bytes) NAG00-007 12φT letter joint When breather pipe 2 is collected to one,    
nag00-008.jpg (29452 bytes) NAG00-008 14φT letter joint When breather pipe 2 is collected to one,    
- NAG00-009 20φT letter joint When breather pipe 2 is collected to one,    
nag00-010.jpg (47815 bytes) NAG00-010 12φT letter joint (one side [mekura]) As the passage of L type to use, one side [mekura]
In Z1000 enabled
   
nag00-011.jpg (63713 bytes) NAG00-011 Blow off valve adapter The SET part of NAG03-102
BUELL DUCATI
   
nag00-012.jpg (45723 bytes) NAG00-012 Blow off valve adapter 13φ The SET part of NAG03-103
For 13φ street
   
nag00-013.jpg (58090 bytes) NAG00-013 Blow off valve adapter 14φ The SET part of NAG03-104
For 14φ street
   

  (Ram pressure specification car exclusive use) crankcase internal pressure controller + blow off valve SET

  Product code Application model Remark    
nag04-101.jpg (81116 bytes) NAG04-112 GSXR600R/1000R
R6/R1 (04)
By opposite car for 12φ street
If (it is sport travelling, this SET)
Air shot mechanism is jointly used.
 
nag04-101r.jpg (77424 bytes) NAG04-112R GSXR600R/1000R
R6/R1 (04)
For 12φ circuit
Air shot mechanism is jointly used.
 
nag01-102.jpg (67395 bytes) NAG04-114 CBR600RR (03-06)
CBR1000RR (04-06)
By opposite car for 14φ street
If (it is sport travelling, this SET)
Air shot mechanism is jointly used.
 
nag04-102R.jpg (64638 bytes) NAG04-114R CBR600RR (03-06)
CBR1000RR (04-06)
For 14φ circuit
Air shot mechanism is jointly used.
 

-

NAG04-103 VTR1000SP1/SP2 For 12φ street
NAG01-105+NAG03-104
As for air shot mechanism state of standard
So you use.
   
DUCATI-Ram-set.jpg (59311 bytes) NAG04-104 DUCATI999R and the like (RAM car) With RAM specification car 輌 for street
If (it is sport travelling, this SET)
 
nag04-105.jpg (54764 bytes) NAG04-105 DUCATI999R and the like (RAM car) With RAM specification car 輌 for circuit  
- NAG04-106R CBR600RR (07) Private design  

Other SET

  Product code Trade name Remark application model    
nag05-101.jpg (63279 bytes) NAG05-101 Blow off valve and funnel SET 
For street
(03-04 previous term) BUELL XB 
RAM pressure specification car
   
NAG05-101R.jpg (35997 bytes) NAG05-101R Blow off valve, funnel SET
For crank internal pressure controller race/lace
(03-04 previous term) BUELL XB 
RAM pressure specification car
   
nag05-102.jpg (79974 bytes) NAG05-102 The adapter SET for FCR41 For FCR41    

Notice
 Depending upon the difference and the like of climate, because the emulsion (the milk white the oil which is made turbid) there are times when it is easy to be attached in the blow-by, please check occasionally. Care method, with washing oil such as [patsukurina] and gasoline and kerosene is OK with the circular washing. It is not necessary to disassemble. Case the hose has deteriorated, please change into the new item. Those where the crack appears into the especially inner wall, peeling off, become operation defective.