BogusSVO
10+ Year Contributor
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- Jul 1, 2009
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Pensacola,
Florida
just some quick info on stock replacement valve springs from SBI
Part Number #160-1280
Free length 1.910
O.D. 1.110
I.D. .754
Wire size .145x.178
Closed position
pressure & Length (intalled specs)
[email protected] Valve closed
Open position
Pressure & length Valve Open
[email protected]
solid height
1.100
The factory installed springs should be close to this also.
EDIT: I just checked 7 sets of used 4G63 valve springs, and only came up with 1 and a half sets of decent used springs.
Most springs checked between 45-55 Lbs @ 1.575
I would say a good spring should test at [email protected], Most spring manufactures, will allow 10% loss in spring tention for spring "break in"
I used a Rimac spring pressure tester.
Ferrea "beehive" Spring info
Specs on the springs
- Spring O.D. - 23.87mm / 28.07mm = .939/1.105
- Spring I.D. - 14.73mm / 18.85mm = .579/.742
- Seat Pressure - 90 lbs. @38mm = 1.496
- Open Pressure - 225 lbs. @28mm =1.102
- Rate Inch - 342 lbs.
- Coil Bind - 23mm =.905
- Max Net Lift – 13.5mm = .531
- Spring Material - PAC Alloy
http://www.extremepsi.com/store/customer/product.php?productid=21647&cat=1417&page=1
BC 1100 Valve spring info
Spring Pressure:
BC1100 Seat:
Colsed 1.500" @ 95 lbs /
Open: 1.000" @ 235 lbs /
Coil Bind: 0.935"
(no machine work required)
http://www.briancrower.com/makes/mitsubishi/4g63.shtml
GSC Power-Division 4G63T Beehive Single Spring Set
Spring Pressures :
Seat @ 1.56"=68 lbs / .300"=160lbs / .400"=190lbs / .450"=210lbs / .625"= Coil bind.
http://www.vr-speed.com/store/gsc-p...spring-set-1g-2g-dsm-evo-8-9-4g63-p-2046.html
Kiggley springs
97lb Seat Pressure at 1.440"
325lb/in Rate
http://www.shop.kigglyracing.com/product.sc?productId=2&categoryId=1
I will keep trying to add info as I find it.
Part Number #160-1280
Free length 1.910
O.D. 1.110
I.D. .754
Wire size .145x.178
Closed position
pressure & Length (intalled specs)
[email protected] Valve closed
Open position
Pressure & length Valve Open
[email protected]
solid height
1.100
The factory installed springs should be close to this also.
EDIT: I just checked 7 sets of used 4G63 valve springs, and only came up with 1 and a half sets of decent used springs.
Most springs checked between 45-55 Lbs @ 1.575
I would say a good spring should test at [email protected], Most spring manufactures, will allow 10% loss in spring tention for spring "break in"
I used a Rimac spring pressure tester.
Ferrea "beehive" Spring info
Specs on the springs
- Spring O.D. - 23.87mm / 28.07mm = .939/1.105
- Spring I.D. - 14.73mm / 18.85mm = .579/.742
- Seat Pressure - 90 lbs. @38mm = 1.496
- Open Pressure - 225 lbs. @28mm =1.102
- Rate Inch - 342 lbs.
- Coil Bind - 23mm =.905
- Max Net Lift – 13.5mm = .531
- Spring Material - PAC Alloy
http://www.extremepsi.com/store/customer/product.php?productid=21647&cat=1417&page=1
BC 1100 Valve spring info
Spring Pressure:
BC1100 Seat:
Colsed 1.500" @ 95 lbs /
Open: 1.000" @ 235 lbs /
Coil Bind: 0.935"
(no machine work required)
http://www.briancrower.com/makes/mitsubishi/4g63.shtml
GSC Power-Division 4G63T Beehive Single Spring Set
Spring Pressures :
Seat @ 1.56"=68 lbs / .300"=160lbs / .400"=190lbs / .450"=210lbs / .625"= Coil bind.
http://www.vr-speed.com/store/gsc-p...spring-set-1g-2g-dsm-evo-8-9-4g63-p-2046.html
Kiggley springs
97lb Seat Pressure at 1.440"
325lb/in Rate
http://www.shop.kigglyracing.com/product.sc?productId=2&categoryId=1
I will keep trying to add info as I find it.
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