mkw1

and one run these? looking for good springs to use with ctr cams,but never heard any thing about these.


JG Dual Valve Springs are made from the highest quality chrome silicone wire. These valve springs are designed from our experiences in touring car and drag racing. The dual interference fit valve spring design prevents harmonics and valve float. All valve springs are race tested and proven and can be used with both forced induction and naturally aspirated engines.

JG Dual Valve Spring Specs:

Installed spring height 1.350 48lbs seat pressure

500" Lift 212 lbs / 550" Lift 230 lbs / 600" Lift 252 lbs

JG Titanium Retainers titanium retainers are CNC-machined from the strongest aerospace quality titanium and are designed to significantly reduce overall valvetrain mass. JG titanium retainers are machined to extremely close tolerances in order to ensure properly installed spring heights and pressures.

Legion

I bought a JG pro cyl. head and promptly swapped out the springs and retainers for Skunk2 stuff. The JG retainers were incredibly soft and the springs easily sunk into them.

I didn't have any problems with the springs, but the retainers were junk, so I decided to replace everything. The Skunk retainers are 10x stronger.

EDIT:
This was 5 years ago BTW. Maybe they use a stronger grade of Ti now. I find it unlikely though, considering that JG quality seems to go downhill every year. Back around 2000 they were on top of the import world. Now you rarely even hear about them...

p0gi

JG used to make the retainers out of aluminum and many people had them fail.

blinx9900

a lot of people run them and they all drop valves

ladysman

JG = Just Garbage

UncivilB18C

Wish I knew all this in advance. I run a JG head on my LST. I run stock LS cams with their valve train. Car makes power till about 8400. I've been pretty happy. So far...

b18c1Monster

ive been using their springs and reatiners in my 600whp daly driver for a year and a half. no problems and the springs are very stiff

Top Ramen

See sig. for what it is like dealing with that piece of **** Javier. . .