// // Valve[Reinforced valve spring]For SwiftSport(ZC32S/ZC31S/HT81S) [124100-4650M] : MonsterOnlineShop - Autoparts for sale, We will ship our autoparts all over the world.



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Valve[Reinforced valve spring]For SwiftSport(ZC32S/ZC31S/HT81S)



[Reinforced valve spring for Swift Sport M16A]

Material:SWOCN-V[Nitrification]
Design:This spring has been improved for surging.
Installation:
Easy installation with no machining required and no replacing spring retainers.

Model
Swift Sport ZC32S,ZC31S,HT81S
Reinforced valve spring
ZC31S standard
HT81S
Sep'05-
May'07-
Standard
Coil diameter
3.3mm
3.1mm
3.1mm
Spring rate
29.20N/mm
21.25N/mm
21.85N/mm
Proper vibration
11,500rpm
10,323rpm
10,348rpm
Spring
property
Install height
17.6kgf
13.0kgf
17.6kgf
Max。。lift
49.4kgf
36.9kgf
41.5kgf
Maximum RPM
8200-8500rpm
7000rpm
7500rpm
6800rpm
USER-VOICE

I had Monster highflow camshaft and valve spring sets installed on my ZC31.
The skilled mechanic had the E-Manage U re-tuned to match the camshaft at the same time.

After installation the car was put on wheels-dyno and pulled out a maximum 128.5 ps at 7,300 rpm before the rev limiter cut-off kicked in, from the dyno chart it shows more power is likely to come if I could remove the rev-limiter.

Dyno chart showed 8.5 ps (deleted "on") gain on wheels, the torque and ps increased from 3,500 all the way to 7,300 rpm.

The increase of power became more significant over 5000 rpm and beyond. The engine feels of easy breathing became apparent especially at full throttle input.

Driving impression revealed that engine revving is much smoother and the sense of power increasing along with engine speed is much improved.

I can not really feel loss of power at low rpm, or if any, maybe insignificant, the engine has become more responsive to throttle input, which makes it more fun and enjoyable to drive.


I have installed these valve springs on my car with the addition of a set of 。。mild cams with a maximum lift of 9.0 mm. Valve lifter to camshaft clearance was professionally and accurately set. After ECU re-programming, I was able to take the car to 8000 rpm with no issues on the dyno. Occasional pulls on the road to 8000 have also been safe.



Add to Cart:

    Model: 124100-4650M

    $116.51



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