anyone done them here without removing the head? if so please chime in with what tools you used ( just wondering if any specialty tools are needed)

 

you need a overhead valve spring remove install tool and the fiting to screw in the head for an air hose to hook up to

 

check out the lsj buildbook, its a goodson piece. but honestly, have fun doing so. I pull these apart and install all the time since i port them, the hard part is putting the keepers on, since they are so tiny and space is limited.

 

x2 its not for the novice

 

In A&P school (Aircraft Mechanic School) The instructor showed us how to replace a valve spring on an O-470 (Horozontal Opposed, 470CU Aircraft Engine) and I know car engines are VERY diffrent but the main principals are still the same so I dont see why this trick would NOT work on an LSJ.

Get a nylon rope with no frays on it.
Make sure the cylinder that your changeing the springs on is on compression stroke,
Remove the spark plug, and feed the rope into the cylinder then rotate the engine slowly
on compression, this will push the rope up against the inside of the valve face holding it closed
and keeping it from falling into the cylinder.
Then swap out the valve spring
Then rotate the engine backwards to take the pressure off and remove the rope.
-Jonathan

 

ive done small block mopars tha way works great a&p school sucks

 

thanks everyone, thats what i thought just wanted to confirm

 

you can do it if you take your time

 

or you can put a socket over it and hammer it good once and catch the valve before it falls and catch the spring retainers with your teeth... talent right there

putting the new ones on are going to be tough.

 

^might need to pic up a pro with their mouth, u can find them in the city on corners.

 

^ not many pro's on city corners these days..

actually scratch that. unemployment ftw!!

 

i think zzp sells a tool to remove the valve springs without removing the head, can anybody confirm this ?

 

cant see anything on there site

 

i think i've a post by zoomer about that somewhere...u can try to contact zzp they might have it, just email them i guess..

 

yah i have emailed them, looking forward to doing the internals this winter on this motor

 

if that's the case, just wait till you have it all apart, it'll be less of a headache

 

yah i think im going to just wait and when i send my head in for P+P i will do it then.

 

send it to me

 

how much and what do you do? ( how much increases flow, etc)

 

come to think of it, since this is an interferance engine,
If you put the piston on TDC on compression the valve wont be able to fall all the way into the cylinder before resting on the piston. Dont know if it will be high enough to grab or not though