|
Spec
Sheet |
|
Models |
X355
or X385 |
|
Material |
Cast
Aluminum with Water Jacket |
|
Combustion Chambers |
40cc
thru 74cc |
|
Weight |
32
lbs. |
|
Intake Port Volume |
-X355
= 355cc
-X385 = 385cc |
|
Intake Port Location |
Raised
2.8" (Symmetrical) |
|
Intake Valve Diameter |
-X355
up to 2.330
-X385 up to 2.350 |
|
Intake Gasket |
TPC#
170 (.060 Bead Seal) |
|
Exhaust Port Volume |
132cc |
|
Exhaust Port Location |
Raised
3.2" |
|
Exhaust Valve Diameter |
-X355
up to 1.650
-X385 up to 1.650 (with 2.330 intake valve) |
|
Exhaust Gaskets |
TPC#
175 |
|
Retainers |
Titanium (10˚) |
|
Springs |
Manley
Nextek 1.677 OD (2.200 installed height) |
|
Valve Seats |
Copper-Berylium |
|
Valve Seat Dimension |
Intake
= 2.400 OD x 2.050 ID x .400
Exhaust = 1.700 OD x 1.400 ID x .400 |
|
Valve Seat Angles |
-X355
= 50˚
-X385 = 55˚
-EX = 55˚ |
|
Valve Guides |
.502OD, 5/16 or 11/32 ID, 3" Overall Length |
|
Valve Train |
Jesel
System |
|
Valve Stem Diameter |
5/16
(.3110) or 11/32 (.3415) |
|
Valve Length |
Intake
= 6.350" .250 tip
Exhaust = 6.350" .250 tip |
|
Valve Angles |
Intake
= 10˚ x 4˚
Exhaust = 7˚ x 4˚ |
|
Intake Flow |
-X355
up to 478cfm@1.00 lift / 28"
-X385 up to 500cfm@1.00 lift / 28" |
|
Exhaust Flow |
up to
310cfm@1.00 lift / 28" |
|
  |
