Visit The Dirt Forum for More Information

Author Topic:   SBC Valve Adjusments.
stevenm
Dirt Full Roller

Total posts: 43
posted March 13, 2005 10:02 AM  
Small Block Chevy Valve Adjustment Order 0 deg TDC, both number one valves shut.

Adjust the #1 exhaust valve

Adjust the #1 intake valve

Adjust the #3 exhaust valve

Adjust the #5 intake valve

Adjust the #7 intake valve

Adjust the #2 intake valve
Adjust the #4 exhaust valve
Adjust the #8 exhaust valve
Now rotate the engine 360 degrees. The mark on the balancer should be back at the TDC mark. Keep in mind that this is not the TDC where #1 would be firing! It's where #6 would fire.
Adjust the #3 intake valve
Adjust the #5 exhaust valve
Adjust the #7 exhaust valve
Adjust the #2 exhaust valve
Adjust the #4 intake valve
Adjust the #6 exhaust valve
Adjust the #6 intake valve
Adjust the #8 intake valve

Your DONE!

I set the valves in my new motor by the above settings and after setting the valves at top dead center on my balancer I rotated the engine clock wise one full turn to set the other eight valves and the ones set at true top dead center with number one piston up and number one Intake and Exhaust valve shut the Rocker Arms were about to fall off.

I went ahead and reset my valves by getting every piston at TDC Compression Stroke and the settings were dead on.

My new motor is a 350 SBC Bored 30 over Casting number 3900010.6 Inch Full Floating Brass Bushed Rods.Flat Top Two Valve relief Pistons with 1/16th/3/16th Moly Rings.Scat Forged Steel Crank STD Rod and Main Clevite Bearings.Melling HV Oil pump with steel sleeved oil pump Rod.

I had the lifter valley painted rustolem and lifter valley vent tubes Installed.

I had a set of Camel Hump heads cut out for 205 swirl polished Intake valves and 1.60 Exhaust valves with srew in studs and guide plates and bronze valve guides.

Double roller timing chain with aluminum cam button and locking plate.

Weiand Aluminum high rise Intake with one Inch spacer plate with a tricked out 850 cfm quadrajet.

Competition HYD 292 Duration/501 valve lift.
1.5 Aluminum Roller Rockers.

My rotating assembly was balanced.

The Engine really sounds good and eradical with quick throttle responce.

Just hope she runs as good as she sounds.

I will be running a turbo 350 b&m automatic in low gear with a 273 locked 10 bolt GM 10 Bolt rear end.My final drive will be 687.96

The track is a 1/4 mile clay oval medium banks and very tacky clay.

The car will be running in the Hobby Stock class.My sister will be driving the car and she to be a woman can drive the **** out of a dirt car with many wins under her belt but she has not raced since 2000.

Wish us luck.

Thanks:Steve.

petordragon
Dirt Maniac

Total posts: 167
posted March 14, 2005 10:03 AM  
prob didn't have it up on compression stroke to begin with easy to do.

racin78p
Dirt Freak

Total posts: 333
posted March 14, 2005 11:02 AM  
I love it when people get excited. Especially about racing. There's a sense of youth about it all.

Race on.

------------------
racin78p
if it ain't fun, then don't run

stevenm
Dirt Full Roller

Total posts: 43
posted March 14, 2005 04:46 PM  
Probably did not have it on compression stoke my **** ....lol.

Yep it was and the valve adjustments according to the DF ***** .

My way is on target as always.

Thanks.
Steve.

bobaluuu
Dirt Freak

Total posts: 474
posted March 14, 2005 06:58 PM  
thats the attitude to have, why heck I dont even see why you bothered to post this unless your just wantin us low lifes to massage your ego even more than your already doin it yourself.

------------------
Light it up, Baby!

te33
Dirt Freak

Total posts: 237
posted March 14, 2005 09:33 PM  
I AGREE WITH BOB,WHAT ? WHY?DO YOU HAVE A QUESTION?

waltonjr1
Dirt Forum Champ
Total posts: 516
posted March 15, 2005 04:40 AM  
You did something wrong brother b/c ive printed that out and used it many times and never had a problem.


stevenm
Dirt Full Roller

Total posts: 43
posted March 15, 2005 05:54 AM  
I tried the valve adjustments from the DF just out of curiosity and for me it did not work and they were set just as the sheet said.

I reset my valves by getting every cylinder at TDC Compression stroke and had no problem.

Whatever reason they were loose for I dont know? but do know they should be set at TDC Compression stroke both valves closed.

Thanks for the comments and sorry if I came across as an ego stroked....lol!

Stevenm.


waltonjr1
Dirt Forum Champ
Total posts: 516
posted March 15, 2005 08:14 AM  
It really sounds like you started w/ #6 on compression stroke. The way the list works is when the motor is at tdc #1 it lists each valve that is closed then you rotate the engine 180* and the rest of the valves are closed. It works ,trust me. If you have a solid cam its better to do each cylinder one at a time b/c the lash is more critical. Hyd is not as critical b/c of the amount preload in the lifter.


stevenm
Dirt Full Roller

Total posts: 43
posted March 15, 2005 09:02 AM  
I bet that is what happened I had it at the mark up at tdc with number six.

My next settings I will try again.

Thanks.
Stevenm.

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted March 15, 2005 09:08 AM  
The easiest, most foolproof, and I feel most accurate way to do it is the EOIC method (Exhaust Open Intake Close) turn the crank until the exhaust valve just starts to open and adjust the intake. Rotate crank until Intake valve just closes and adjust exhaust. Do 1 cylinder at a time. It requires more turning but it will guarantee you have the lifter on the base circle when you adjust it.

hughes
Dirt Maniac

Total posts: 194
posted March 15, 2005 03:18 PM  
Same Problem here set the valves and ran the heat race. I couldn't have out run my wifes grocery getter. Pulled a valve cover and they all had a 1/8" - 3/16" gap.

stevenm
Dirt Full Roller

Total posts: 43
posted March 15, 2005 03:36 PM  
Hughes sounds like your valve lash turned out like mine loose and sloopy.The one cylinder at a time at top dead center compression stroke is fool proof in my book for 12 years now.

Stevenm.

    

Back to the Archives