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View Full Version : VALVE ADJUSTMENT 4/7 SWAP CAM


jrthone
05-11-2009, 11:46 PM
Wats the easiest meathod to adjust my valves on a BBC with a 4/7 swap cam?

Tod74
05-12-2009, 01:04 AM
The exact same way you adjust them on any engine. the 4 7 swap has nothing to do with it...unless you use a method like "Bring number 1 to TDC then adjust intakes on these cylinders.... etc

Just adjust each valve when the lifter is on the base circle.

When the ex starts to open, adjust the intake. When the intake has opened completely and is on it's way closed, adjust the exhaust.

jrthone
05-12-2009, 11:55 PM
That answer hasnt realy given me a method. I have always done it starting on TDC etc. Wats the best way to do it. and the quickest

Tod74
05-13-2009, 01:10 AM
That answer hasnt realy given me a method. I have always done it starting on TDC etc. Wats the best way to do it. and the quickest


When the ex starts to open, adjust the intake. When the intake has opened completely and is on it's way closed, adjust the exhaust.

CamBirdRacing
05-13-2009, 03:16 AM
Do it the way Tod said to do it.

TS1955
05-13-2009, 03:26 AM
I adjust mine like Tod said only I adjust them in the firing order. I do the exhaust first, then the intakes. This way I'm only rotating the engine over a couple of times.

TS1955

suicidebomb
05-13-2009, 04:27 AM
Just lash them the way you've always done it. WITH the new firing order, you'll be just fine. As long as the lifter is on the base circle, for the valve you are adjusting, everthing will be just fine.

Tod74
05-13-2009, 02:29 PM
when using EO IC method you must be quick... I recomend turning the idle speed down as low as possible. ...

I972Nova
05-13-2009, 03:19 PM
I just fell out of my chair laughing Tod! :lol:

jrthone
05-18-2009, 11:55 PM
ok thanks. all that info was no help at all. In the above 8 threads i did not get step by step method. I am new to this and this has wasted alot of my time. If ANY 1 out there has a STEP by STEP Method it would be greatly apreciated.

cepx111
05-19-2009, 01:02 AM
Heres my step by step method.

Step#1 remove valve covers.

Step#2 remove spark plugs (makes it easier to turn motor by hand)

Step#3 adjust valves like Tod said> "When the ex starts to open, adjust the intake. When the intake has opened completely and is on it's way closed, adjust the exhaust"

Step#4 re-install valve covers and plugs.

That pretty much covers it.

Tod74
05-19-2009, 01:14 AM
ok thanks. all that info was no help at all. In the above 8 threads i did not get step by step method. I am new to this and this has wasted alot of my time. If ANY 1 out there has a STEP by STEP Method it would be greatly apreciated.

The title of the thread mentions your 4,7 swap cam...
Then You said "I usually start with TDC etc...." that implies that you already know how to adjust valves and that your only issue was that you now have a 4,7 firing order swap cam...If you didn't already know how to adjust valves you should have said so, I would have been more specific.

Open hood.
Unbolt valve covers by rotating bolts or nuts counterclockwise with
the appropriate wrench.Remove coil wire(Accomplish this by firmly grasping the rubber boot on coil wire and pulling...I recommend the engine be off )

pick a cylinder...bump the engine over with a remote starter (by pushing the button ) until the exhaust valve on that cylinder starts to open...stop moving engine. Now insert a allen wrench in the poly lock on the intake valve while holding the outside of it with a box end wrench.Break set screw loose by rotating allan wrench in a COUNTER CLOCKWISE DIRECTION. and back nut up by turning it counter clockwise..insert feeler gauge.. tighten nut by turning wrench clockwise until there is firm drag on the feeler gauge...hold hex with wrench while snugging down set screw by turning it clockwise... recheck with feeler gauge..it will probably be looser, then snug down with hex wrench( clockwise) the last little bit. Check with feeler gauges.(go no go with .001" bigger and .001" smaller) Now bump motor over until that valve opens all the way up and is on it's way closed..repeat previous process on the exhaust valve. That's how I do it...I start on one side and do them all then go to the other side...takes a little longer maybe but to me there is less chance of missing one. Just my opinion everyone has their own way to do things.

hammertime
05-19-2009, 04:29 AM
Heres my step by step method.

Step#1 remove valve covers.

Step#2 remove spark plugs (makes it easier to turn motor by hand)

Step#3 adjust valves like Tod said> "When the ex starts to open, adjust the intake. When the intake has opened completely and is on it's way closed, adjust the exhaust"

Step#4 re-install valve covers and plugs.

That pretty much covers it.

x2 but no need to pulls plugs for me, you adjust the rockers with a 4/7 no different then a regular cam, the lash has nothing to do with the 4/7

jrthone
05-23-2009, 09:17 PM
Thanks heaps for the smart ass comments. I think this somes up some americans.

dparker
05-23-2009, 09:45 PM
Sorry, Americans cans be little arrogant. Give us a little time we'll learn to DUMB down to your level were you might be able to u n d e r s t a n d.

MEMRACING62
05-23-2009, 10:35 PM
SMART BUTT AMERICAN & PROUD OF IT :!: 8)

zipper06
05-23-2009, 10:54 PM
Thanks heaps for the smart a comments. I think this somes up some americans.

RE: jrthone

No one is being a smart ass here, although some made those remarks. There is no special way to adjust the rockers on a 4/7 swap cam. You just adjust them one at a time once the engine is warmed up. Use a breakerbar or a rachet and turn the engine over until the exhaust starts to open and adjust the intake on that cylinder, same for the exhaust. Don't ever look for short cuts on a race engine, it will bite you in the butt. It's not fast and it's not quick, but it's the right way.

JMO

Zip.

Tod74
05-24-2009, 01:31 AM
Thanks heaps for the smart a comments. I think this somes up some americans.

Maybe that is because you were answered more than once, then you came back and started bitching that we wasted your time because YOU wanted exact STEP BY STEP method....so that's what you got.

suicidebomb
05-24-2009, 02:13 AM
Thanks heaps for the smart a comments. I think this somes up some americans.

Can we get you some cheese, to go with your whine?

Drtmod5
05-24-2009, 10:51 AM
You guys might as well give it up. Like was said, it's the cultural difference that we AMERICANS can't match. I've been through this same sh@t with another on here and you just can't dumb it down enough. Good Luck! :roll: :roll: Dave

jrthone
05-24-2009, 08:14 PM
Thanks Zipper06 for your comment. You are the only one on here that hasnt made a smart ass comment. You Other guys are so easy to wind up. Its like going fishing, once one fish bites .ITS ALL ON. haha keep it coming and ill keep laughing.

slickfuel
06-14-2009, 09:09 PM
Man,..I havent been in here in awhile,..and I must tell you story..

Doctors are great, they can fixall sorts of things,..They can do tummy tuks, they can do breast implants, and breast reductions, they can do
lipo suction, and face lifts,nose jobs and all sorts of other alterations.
But they just cant fix STUPID.

Good luck on your blow job,
.woops I mean Valve job,.woops,.. I mean Valve adjust.

4/7 swap just means when adjusting the valves instead of adjusting before
7am , you now adjust the valves after 4pm,...Awwwwww.

BIG AMERICAN SMILE


Slick

I just had to do it.

dparker
06-15-2009, 06:28 AM
The bad thing, is your question coming from you is like us asking Neal Armstrong how you set the thrust on a rocket motor. We wouldn't even know what the answer meant. Looks to me like your position on your racecar is you don't know anything about engines so the answer is uncomprehendable. There's nothing wrong with you being that ignorant on engines, but you should be a little more humble. Your question was answered correctly many times. Lighten up maybe you'll learn something.

THERATTLER
06-15-2009, 07:42 AM
:shock: I saw a few pretty good post with step by step instructions by some pretty good people , if you don't know how to adjust valves , what are you doing with a race car?? whats with the AMERICAN wise crack??HILLDALE where are you when we need you?????

68bbnova
06-16-2009, 05:17 AM
ok thanks. all that info was no help at all. In the above 8 threads i did not get step by step method. I am new to this and this has wasted alot of my time. If ANY 1 out there has a STEP by STEP Method it would be greatly apreciated.

The title of the thread mentions your 4,7 swap cam...
Then You said "I usually start with TDC etc...." that implies that you already know how to adjust valves and that your only issue was that you now have a 4,7 firing order swap cam...If you didn't already know how to adjust valves you should have said so, I would have been more specific.

Open hood.
Unbolt valve covers by rotating bolts or nuts counterclockwise with
the appropriate wrench.Remove coil wire(Accomplish this by firmly grasping the rubber boot on coil wire and pulling...I recommend the engine be off )

pick a cylinder...bump the engine over with a remote starter (by pushing the button ) until the exhaust valve on that cylinder starts to open...stop moving engine. Now insert a allen wrench in the poly lock on the intake valve while holding the outside of it with a box end wrench.Break set screw loose by rotating allan wrench in a COUNTER CLOCKWISE DIRECTION. and back nut up by turning it counter clockwise..insert feeler gauge.. tighten nut by turning wrench clockwise until there is firm drag on the feeler gauge...hold hex with wrench while snugging down set screw by turning it clockwise... recheck with feeler gauge..it will probably be looser, then snug down with hex wrench( clockwise) the last little bit. Check with feeler gauges.(go no go with .001" bigger and .001" smaller) Now bump motor over until that valve opens all the way up and is on it's way closed..repeat previous process on the exhaust valve. That's how I do it...I start on one side and do them all then go to the other side...takes a little longer maybe but to me there is less chance of missing one. Just my opinion everyone has their own way to do things.

I hope he does not have a 4/7 swap with a hydraulic lifter!!!

suicidebomb
06-16-2009, 06:33 AM
Step 1- Take the car to a MECHANIC.

Step 2- Ask him to adjust your valves.

Step 3- Pay the man.

Last step- Take car home.

Maybe the easiest and fastest method in your case.
Ain't it funny how Americans seem to band together when criticized by foreigners. Keep on laughing.......We are. Hows that for summing it up?

THERATTLER
06-16-2009, 07:58 AM
:D I never had a problem with the 4-7 swap , but when I went to the 3 - 6 swap I had to adjust all the intake valves backwards,,,what was real hard was , I had to tear down motor and swap the 3 and 6 pistons around backwards , , now I have a small misfire , I was told that I need a special rotor button , will it never end???? :roll:

Tod74
06-16-2009, 10:42 AM
ok thanks. all that info was no help at all. In the above 8 threads i did not get step by step method. I am new to this and this has wasted alot of my time. If ANY 1 out there has a STEP by STEP Method it would be greatly apreciated.

The title of the thread mentions your 4,7 swap cam...
Then You said "I usually start with TDC etc...." that implies that you already know how to adjust valves and that your only issue was that you now have a 4,7 firing order swap cam...If you didn't already know how to adjust valves you should have said so, I would have been more specific.

Open hood.
Unbolt valve covers by rotating bolts or nuts counterclockwise with
the appropriate wrench.Remove coil wire(Accomplish this by firmly grasping the rubber boot on coil wire and pulling...I recommend the engine be off )

pick a cylinder...bump the engine over with a remote starter (by pushing the button ) until the exhaust valve on that cylinder starts to open...stop moving engine. Now insert a allen wrench in the poly lock on the intake valve while holding the outside of it with a box end wrench.Break set screw loose by rotating allan wrench in a COUNTER CLOCKWISE DIRECTION. and back nut up by turning it counter clockwise..insert feeler gauge.. tighten nut by turning wrench clockwise until there is firm drag on the feeler gauge...hold hex with wrench while snugging down set screw by turning it clockwise... recheck with feeler gauge..it will probably be looser, then snug down with hex wrench( clockwise) the last little bit. Check with feeler gauges.(go no go with .001" bigger and .001" smaller) Now bump motor over until that valve opens all the way up and is on it's way closed..repeat previous process on the exhaust valve. That's how I do it...I start on one side and do them all then go to the other side...takes a little longer maybe but to me there is less chance of missing one. Just my opinion everyone has their own way to do things.

I hope he does not have a 4/7 swap with a hydraulic lifter!!!

Never heard of one that wasn't a solid roller...but good point though.

ashtrak
06-19-2009, 10:28 AM
I'm glad this isn't a 4,7 & 2,3 swap cam :lol:

oldandtired
06-19-2009, 12:56 PM
Throw a 180 crank in there and we can start over...

Dave

ARUSSELL
06-19-2009, 01:46 PM
ok thanks. all that info was no help at all. In the above 8 threads i did not get step by step method. I am new to this and this has wasted alot of my time. If ANY 1 out there has a STEP by STEP Method it would be greatly apreciated.

The title of the thread mentions your 4,7 swap cam...
Then You said "I usually start with TDC etc...." that implies that you already know how to adjust valves and that your only issue was that you now have a 4,7 firing order swap cam...If you didn't already know how to adjust valves you should have said so, I would have been more specific.

Open hood.
Unbolt valve covers by rotating bolts or nuts counterclockwise with
the appropriate wrench.Remove coil wire(Accomplish this by firmly grasping the rubber boot on coil wire and pulling...I recommend the engine be off )

pick a cylinder...bump the engine over with a remote starter (by pushing the button ) until the exhaust valve on that cylinder starts to open...stop moving engine. Now insert a allen wrench in the poly lock on the intake valve while holding the outside of it with a box end wrench.Break set screw loose by rotating allan wrench in a COUNTER CLOCKWISE DIRECTION. and back nut up by turning it counter clockwise..insert feeler gauge.. tighten nut by turning wrench clockwise until there is firm drag on the feeler gauge...hold hex with wrench while snugging down set screw by turning it clockwise... recheck with feeler gauge..it will probably be looser, then snug down with hex wrench( clockwise) the last little bit. Check with feeler gauges.(go no go with .001" bigger and .001" smaller) Now bump motor over until that valve opens all the way up and is on it's way closed..repeat previous process on the exhaust valve. That's how I do it...I start on one side and do them all then go to the other side...takes a little longer maybe but to me there is less chance of missing one. Just my opinion everyone has their own way to do things.

I hope he does not have a 4/7 swap with a hydraulic lifter!!!

Never heard of one that wasn't a solid roller...but good point though.
Tod, while you are at it can you give the step by step directions how to properally change blinker fluid?

Tod74
06-19-2009, 02:54 PM
I would...but it would be too much for stupid Americans to comprehend....IMBECILES.

ARUSSELL
06-19-2009, 02:56 PM
I would...but it would be too much for stupid Americans to comprehend....IMBECILES.

I love being a stupid redneck!

THERATTLER
06-19-2009, 03:39 PM
I KNOW I AIN'T STUPID ,,,WHY HELL , IT WAS JUST THE OTHER DAY MY WIFE WAS TELLING ME HOW" SMART "I AM ,,,NO WAIT A MINIUTE THAT WAS " SMARTA$$" ,,,, AGAIN.. :shock: