Размеры клапанных пружин Honda В-engines (сток/тюн)

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Сообщение Чубака ǀ 04 окт 2017

Нужно-не нужно, но пусть будет. Прошаренным пригодится. Я в этом не шарю, поэтому спрашивать меня по этим размерам и как поверить, какие клапанные пружины установлены в данный момент у вас на автомобиле - бесполезно.
STOCK 1997-1999 ITR | B18C5
INTAKE lift - 11.5 mm, duration 240 @1mm
EXHAUST lift - 10.5 mm, duration 235 @1mm

STOCK CTR and 2000-2001 ITR
INTAKE lift - 11.5 mm, duration 243 @1mm
EXHAUST lift - 10.5 mm, duration 235 @1mm

Stock GSR | B18C1
INTAKE lift - 10.6 mm, duration - 230 @1mm
EXHAUST lift - 9.4 mm, duration - 227@1mm

Tuner 1s
IINTAKE lift: 264*/11.9@1mm / 0.000 lash
EXHAUST lift: 259*/11.0@1mm / 0.000 lash

Skunk2 PRO1
IINTAKE lift - 12.6 mm, duration 264 @1mm
EXHAUST lift - 11.9mm, duration 264 @1mm

Skunk2 Stage 1 Turbo Cams
Intake:
Duration @ 1mm: 223°
Valve Lash: Lift @ 0” Lash: @ 0.409” (10.4mm) 0.007 (cold)
Exhaust:
Duration @ 1mm: 227°
Valve Lash: Lift @ 0” Lash: @ 0.394” (10.0mm) 0.008” (cold)

Skunk2 Stage 2 Turbo Cams
Intake:
Duration @ 1mm: 231°
Valve Lash: Lift @ 0” Lash: @ 0.433” (11.0 mm) 0.007 (cold)
Exhaust:
Duration @ 1mm: 236°
Valve Lash: Lift @ 0” Lash: @ 0.417” (10.6 mm) 0.008” (cold)

Buddy Club Spec 3 Plus
INTAKE lift - 11.2 mm, duration 250 @1mm
EXHAUST lift - 11.5mm, duration 245 @1mm

Now if we look at the link above, we can see that the valve springs on the intake and exhaust side are the same on a ITR. So now we take a look at the specs for the Buddy Club Spec 3+ cams and notice that the max intake and exhaust lifts don't exceed the max intake lift of a ITR at 11.5mm. So a valvespring upgrade is not required.

Now lets do the same for a more agressive cam.

Toda Spec C's
INTAKE lift - 12.5 mm, duration 255 @1mm
EXHAUST lift - 12.5mm, duration 255 @1mm

We can already clearly see that the lift of the Toda C's at 12.5mm greatly exceeds the stock lift specs of the ITR's intake lift of 11.5mm so a aftermarket valvespring is required.

It's no coincidence that Toda makes valve springs that have a max lift of 12.5mm therefore saftly allowing you to run their cams without valve float.

Now you may think the solution is that you run the highest available max lift that you can find. The simple answer is no. You want to run the least amount of spring pressure that will still saftly get you to the max lift you require. If you do decide to run aggresive springs like 14.5mm of max lift when you only need 12.2mm of max lift, your going to experience accelerated valve retainer, valve seat, rocker and cam lobe wear, so this is your warning.

Also it's a safe bet to have about 0.5mm-0.6mm extra of max lift just in case you mis-shift or over rev your engine. So for example if your running cams that require 12mm max lift it doesn't hurt to run valve springs with a max lift of 12.5mm to be on the safe side.

A list of common valve spring specs for different manufactures. This is for B18C1, B18C5 & B16A Heads.

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

Toda Valve Springs
Variable or Linear: Variable
Seat Pressure: ???
Max Lift: 12.5mm
Coil Bind: 12.9mm
Pressure @ 12.5mm/.492" lift: 190lbs

Omni-Power Valve Spring - Old Specs
Seat pressure 55 lb’s
Coil bind 14 mm
Pressure @ 12.7mm/.500 lift 180 approx. +-1%
Max lift 13.2 mm

Omni-Power Valve Springs - New Specs
Seat pressure 65 lb’s
Coil bind 14.8 mm
Pressure @ 12.7mm/.500 lift 200 approx. +-1%
Max lift 14.5 mm

Supertech B-Series Valve Springs PN SPR-H1002D-KIT
Variable or Linear: Linear
Seat Pressure: ???
Max Lift: 12.5mm
Coil Bind 19.5mm
Pressure @ 12mm/.472" lift: 190lbs

Supertech B-Series Valve Springs PN SPR-H100DR-KIT
Variable or Linear: Linear
Seat Pressure: ???
Max Lift: 14mm
Coil Bind ???
Pressure @ 14mm/.551" lift: 266lbs

Jun Valve Springs
Variable or Linear: Linear
Seat Pressure: 51lbs
Max Lift: 12mm
Coil Bind: 12.2mm
Pressure @ 12mm/.472" lift: 195lbs

Web Valve Springs
Variable or Linear: Linear
Seat Pressure: 50lbs
Max Lift 12.5mm
Coil Bind: 12.7mm
Pressure @ 12.5mm/.492" lift: 198lbs

Portflow Valve Springs
Variable or Linear: Linear
Seat Pressure: 70lbs
Max Lift 12.5mm
Coil Bind: 12.7mm
Pressure @ 12.5mm/.492" lift: 204lbs

Skunk 2 Valve Springs
Variable or Linear: Linear
Seat Pressure: 72lbs
Max Lift: 12.7mm
Coil Bind: 18mm
Pressure @ 12.7mm/.500" lift: ???

Ferrea Valve Springs - Dual Spring Hi Pressure Setup PN S10027
Variable or Linear: Linear
Seat Pressure: 100lbs
Max Lift: 13.5mm
Coil Bind: 20mm
Pressure @ 13.5mm/.531" lift: ???
***Requires Ferrea retainers and valve springs seat***

Ferrea Valve Springs - Single Spring Setup PN S10028
Variable or Linear: Linear
Seat Pressure: 55lbs
Max Lift: 13.5mm
Coil Bind: 20mm
Pressure @ 13.5mm/.531" lift: ???
***Requires Ferrea retainers and valve springs seat***

Manley Valve Springs
Variable or Linear: Linear
Seat Pressure: ???
Max Lift: 13.5mm
Coil Bind: 19.4mm
Pressure @ 13.5mm/.531" lift: ???

Rocket Motorsports Gen 1 Valve Springs
Variable or Linear: Linear
Seat Pressure: 95lbs
Max Lift: 13mm
Coil Bind: ???
Pressure @ 12mm/.472" lift: 265lbs

Rocket Motorsports Gen 2 Valve Springs
Variable or Linear: Linear
Seat Pressure: 55lbs
Max Lift: 14mm
Coil Bind: ???
Pressure @ 12mm/.472" lift: 180lbs
Если я правильно смог разобраться, то вначале идет инфа по валам, тут все более-менее понятно. При желании разобраться можно. А дальше начинается неизвестная мне бесовщина. Ясен пень, что это все для тюнинга мотора и скорее всего среди них есть усиленные клапанные пружины. Но как их правильно подобрать под свои нужды ? Если кто-то в теме - дайте пожалуйста пояснения простым человеческим языком, чтобы было понятно что куда и зачем ...

P.S. Или хотя бы переведите )))
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Чубака
Гуру мануалов
Сообщения: 1544
Зарегистрирован: 12 авг 2012

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