What's wrong with this picture?

[fjwagon]

Got the wrong push rods installed.

 

[Clint79]

MMMM i know when i put a race cam in my carbd 3f the stock springs had to get chucked out because they binded up
your spring looks a bit squashed
did you get a big cam?

 

[Magnum44]

OK, I give up. What is it?

 

[dmaddox]

Machine shop milled the head down too much.

 

[propilot]

Maybe a seat/guide issue? Maybe a lack of one or the other?

 

[mooker82]

Did someone weld the spring and retainer together?

 

[BGarcia88FJ62]

Trollhole you fawkin tard let the cat out of the bag already
,

 

[robtackett]

You weren't thinking with your dipstick

 

[Big B.]

the valve stem seal is protruding out from below the valve spring causing it to coil bind.

 

[BC40]

There are a bunch of reasons to shim it. If you do a valve job, you have to shim it, if you surface the head, or deck the block, or have a reduced base circle on the cam, or replace the valve seats, etc... You shim the spring to get the correct installed height on the valve spring, to prevent valve float. If you shim it too much, or have the wrong installed height, you get coil bind.

Shawn

Yep, added washer under the spring seat to increase spring rate/load for a hotter cam (to prevent valve float).

Since the valves and springs are said to be stock and the lash in adjustment, a really high lift cam, a valve seat insert that is too tall or dropped, or too thick a shim under the springs will cause it to bind.

 

[672FJ40]

Two of the lifters are not properly seated.

 

[ken_79-fj40]

Machine shop milled the head down too much.

This is what I was thinking too.

 

[ToyotaDon]

Camshaft installed backward?

 

[jcj_78FJ40]

Intake valve in an exhaust port (or visa-versa).

 

[Trollhole]

Someone installed an IFS spring?

lol. Nope..

There are a bunch of reasons to shim it. If you do a valve job, you have to shim it, if you surface the head, or deck the block, or have a reduced base circle on the cam, or replace the valve seats, etc... You shim the spring to get the correct installed height on the valve spring, to prevent valve float. If you shim it too much, or have the wrong installed height, you get coil bind.

Shawn

Bingo! Finally. I post why below.

Got the wrong push rods installed.

Nope..

MMMM i know when i put a race cam in my carbd 3f the stock springs had to get chucked out because they binded up
your spring looks a bit squashed
did you get a big cam?

Kind of but stock springs will work with an RV cam.

OK, I give up. What is it?

Nope.. That is the wrong answer.

Machine shop milled the head down too much.

Nope..

Maybe a seat/guide issue? Maybe a lack of one or the other?

Nope.. and Nope..

Did someone weld the spring and retainer together?

Nope.. But that would be a hell of a way to end this thread.

Trollhole you fawkin tard let the cat out of the bag already
,

I'm working on it. Y'all are some chatty bastards. Lot of responses.

You weren't thinking with your dipstick

Jimmy!

the valve stem seal is protruding out from below the valve spring causing it to coil bind.

Nope..

Yep, added washer under the spring seat to increase spring rate/load for a hotter cam (to prevent valve float).

Since the valves and springs are said to be stock and the lash in adjustment, a really high lift cam, a valve seat insert that is too tall or dropped, or too thick a shim under the springs will cause it to bind.

Bingo. Very nice.

Two of the lifters are not properly seated.

Nope..

This is what I was thinking too.

Nope..

Camshaft installed backward?

Now there is that 99% answer you just got to love. lol

But nope..

Intake valve in an exhaust port (or visa-versa).

Nope:


As stated above. Stock springs, valves, seats, lifters. Everything is stock except for two things. When the valve job was done the springs were shimmed to get them back into spec. Any good machine shop should do this. The motor has a Billet RV cam in it. When you combine the two parts together you get a stacked spring. Basically a spring that has no more room for compression.

Now who can tell me what spring that is cheap out there you can buy to fix this issue? And what does it come out of? That will make shimming the springs a non-issue?

 

[fireflyr]

Chevy 283.

 

[cruiserbrett]

Actually a good machine shop would replace the springs! . If the free height is too short or the tension is inadequate shimming with a stocck cam is fine. Not so with added lift. There should be one shim there already, which prevents the spring from chewing into the head.

 

[Shawn Russell]

The one "shim" on the bottom that should be there is not a shim. It is a spring bottom or cup. Shims are flat and are placed under the spring bottom or cup, bottoms usually have a step in them like the top retainer, cups sides that turn up - shaped like a cup.

Shawn

 

[Fantasma-4x4]

As stated above. Stock springs, valves, seats, lifters. Everything is stock except for two things. When the valve job was done the springs were shimmed to get them back into spec. Any good machine shop should do this. The motor has a Billet RV cam in it. When you combine the two parts together you get a stacked spring. Basically a spring that has no more room for compression.

Now who can tell me what spring that is cheap out there you can buy to fix this issue? And what does it come out of? That will make shimming the springs a non-issue?

Use a set of these springs. Enable more compression, works well with RV... :

RV Cam Kit