Jeep Strokers

I have tried to search/look and can't find what are the exact specs for the Stock valve springs and the Mopar Perf 5249464 valve springs.

Here is what I have found-

[email protected]", [email protected]"(0.424"lift), [email protected]"(0.440"lift), bind at 1.140", safe to 0.440"lift, 295-327lb/in.

MP5249464- [email protected]", [email protected]"(0.424"lift), [email protected]"(0.450"lift), [email protected]"(0.500"lift), safe to 0.525"lift, 270lb/in.

Does anyone know the exact specs? @1.64"installed height and spring rate?

I found some beehive springs with the following specs as possible swaps ?-
#1213-- [email protected]", [email protected]"(0.500"lift), 191lb/in. -probably just a little lite
#1214- [email protected]", [email protected]"(0.500"lift), 275lb/in. -?just right?

I am looking for valve springs that will let the cam live at 0.518" lift. Any Ideas?

not sure if this is the information you seek but here are some specs for stock 4L i6

Valve Springs
Free Length (Approx) ….. 46.22 - 47.65 mm (1.82 - 1.876in.)
Spring Tension --
Valve Close ……………316 to 351 N @ 41.656 mm
_____________________ (71 to 79 lbf. @ 1.64 in.)
Spring Tension --
Valve Open ……………898.6 to 969.7 N @ 30.89 mm
______________________(202 to 218 lbf. @ 1.216 in.)
Inside Diameter ………….21.0 mm to 21.51 mm
_________________________(0.827 to 0.847 in.)


Brian

Thanks, that helps.

STOCK---60-71-79[email protected]", 184-202-218[email protected]"(0.424"lift), [email protected]"(0.440"lift), bind at 1.140", safe to 0.440"lift, 295-327lb/in.

beiwulf wrote:not sure if this is the information you seek but here are some specs for stock 4L i6

Valve Springs
Free Length (Approx) ….. 46.22 - 47.65 mm (1.82 - 1.876in.)
Spring Tension --
Valve Close ……………316 to 351 N @ 41.656 mm
_____________________ (71 to 79 lbf. @ 1.64 in.)
Spring Tension --
Valve Open ……………898.6 to 969.7 N @ 30.89 mm
______________________(202 to 218 lbf. @ 1.216 in.)
Inside Diameter ………….21.0 mm to 21.51 mm
_________________________(0.827 to 0.847 in.)


Brian

Rockauto shows 2 springs 1.8 and 2.1" free length. Mine were 2.1"

Mopar performance:
Free length: 2.06"
Rate: 271
113#@1.64"
225#@1.228"
232#@1.205"

found this thread… hope it helps.

http://board.moparts.org/ubbthreads/sho ... 083&page=0

Parts reference on thread

Mopar performance:
P5249464 springs
P4876062 springs

Hughes Engines:
HUG 1110 springs