Titanium Valve Spring Retainers Retainers are 20-40% stronger and VLJQL¿FDQWO\OLJKWHUWKDQFRPPRQVWHHO retainers. Made from 100% aircraft TXDOLW\WLWDQLXPEDUVWRFN6ROGLQVHWVRI Part No. Description
Adjustable Guide Plates 3ODWHVPLQLPL]HPRGL¿FDWLRQVWRKLJKSHU formance cylinder heads when intake ports have been relocated. Easily adjusted inward or outward with grind centers for a closer setting. For more stability, plates can be welded once ¿QDODGMXVWPHQWVKDYHEHHQPDGH)LWV6%&KHY\DQG 9 3DFNDJHGLQVHWVRISDLUV Part No. Description ISK200-AGP 5/16" Dia. Pushrods ISK300-AGP 3/8" Dia. Pushrods
10° Retainers, Use With 10° Valve Locks and Springs 8005-A, 8205, 8305, 9205, 9315, 9365, 9365-SP, 9385, 9965, 9975, 9985 and 9995. 7° Retainers, Use With Springs 8005-A, 8205, 8305, 9000, 9205, 9315, 9365, 9365-SP and 9385.
ISK90-TI/10DEG
ISK91-TI
Rev-Lube ISKRL-100 ,GHDOO\XVHGDVDQDVVHPEO\OXEULFDQWGXULQJK\GUDXOLFRUVROLGFDPVKDIW³EUHDNLQ´RULJLQDOIRUPXOD5HY/XEHXVHV 0RO\6XOSKLGHZLWKRUJDQLFDQGV\QWKHWLFSRO\PHUVWRSUHYHQW³GU\VWDUWXS´6ROGLQOEFRQWDLQHU
Valve Springs
Color Code
Outer O.D./I.D. 1.260" 1.260"
Inner O.D./I.D. .886" .886"
Seat Pressure
Open Pressure
Rate Per In.
Coil Bind
Max. Net Lift
Part No.
Type
ISK205-D Single With Damper ISK235-D Single With Damper
Yellow
115 @ 1.700" 268 @ 1.210" 310 1.160" .490" 130 @ 1.750" 320 @ 1.200" 350 1.150" .550"
Blue
ISK6005 ISK6105 ISK6205
Dual With Damper Dual With Damper Dual With Damper
Blue/Orange/Yellow 1.005"/1.430" .730"/1.070" 135 @ 1.750" 285 @ 1.200" 275 1.120" .550" Red/Orange/Yellow 1.000"/1.430" .730"/1.070" 135 @ 1.812" 315 @ 1.260" 330 1.120" .550"
Orange/Yellow
1.005"/1.430" .725"/1.070" 175 @ 1.812" 330 @ 1.325" 320 1.160" .550"
ISK8005-A Dual With Damper ISK8005-SP Dual With Damper
Blue/Orange/Yellow 1.005"/1.530" .730"/1.110" 135 @ 1.875" 395 @ 1.225" 400 1.160" .650" Blue/Orange/Yellow 1.005"/1.530" .730"/1.110" 150 @ 1.875" 435 @ 1.225" 415 1.160" .650"
ISK8205 ISK8305 ISK9205 ISK9265
Dual With Damper Dual With Damper Dual With Damper Dual With Damper
Orange/Yellow/Brown
1.005"/1.530" .730"/1.110" 140 @ 1.900" 430 @ 1.250" 440 1.170" .650" 1.005"/1.510" .730"/1.110" 160 @ 1.875" 380 @ 1.275" 370 1.175" .600" 1.040"/1.550" .755"/1.130" 170 @ 1.950" 475 @ 1.250" 435 1.175" .675" 1.005"/1.430" .725"/1.115" 175 @ 1.875" 510 @ 1.200" 490 1.130" .675"
Natural Purple
Natural/Yellow
“Max-Life” Super Endurance Roller Valve Springs ISK9987-RADML Engineered for sustained high-RPM oval track racing, “Max-Life" Super Endurance valve springs are man- ufactured from a revolutionary new alloy steel that is nitride heat-treated and multi-stage micro-polished for HQKDQFHGORQJHYLW\6ROGLQVHWVRI
Outer O.D./I.D.
Inner O.D./I.D.
Seat Pressure
Open Pressure
Rate Per Inch
Coil Bind
Max. Net Lift
Type
Dual w/Damper
1.570"/1.146" 1.044"/.748" 275 @ 2.000" 790 @ 1.200" 644 1.150" .800"
Endurance 9000 Series Valve Springs High Endurance ™ Valve Springs 7HVWSURYHQIRUUDFLQJPLOHV,VN\+LJK(QGXUDQFH9DOYH6SULQJVDUHZRXQGIURP³VXSHUFOHDQ´FKURPHVLOLFRQHZLUH3HUIHFW IRU/DWH0RGHOV0RGL¿HGVDQGRWKHUUDFHFDUVUXQQLQJXSWR5306ROGLQVHWVRI
Color Code
Outer O.D./I.D.
Inner O.D./I.D.
Seat Pressure
Open Pressure
Rate Per In.
Coil Bind
Max. Net Lift
Part No.
Type
ISK8205-SP
Dual With Damper Dual With Damper Dual With Damper Dual With Damper Dual With Damper
Natural
1.530"/1.110" .730"/1.005" 150 @ 1.900" 440 @ 1.300" 480 1.150" .650" 1.550"/1.025" .740"/1.035" 210 @ 1.900" 520 @ 1.240" 480 1.130" .660" 1.550"/1.135" .740"/1.025" 220 @ 1.950" 550 @ 1.270" 460 1.170" .680" 1.550"/1.135" .740"/1.025" 225 @ 1.950" 550 @ 1.270" 460 1.170" .680" 1.560"/1.040" .740"/1.145" 240 @ 2.000" 600 @ 1.250" 500 1.180" .720"
ISK9315 ISK9365
Red
Green Green Yellow
ISK9365-SP
ISK9385
437
2019-20 CIRCLE TRACK PARTS AND ACCESSORIES
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