Best way to adjust valves??????

Took the motor up to get dynoed and the man running the dyno said that we should be able to adjust the valves in 7 or so minutes. This is all new to me and I just took my time to double check myself. What are most people doing that I am not? Thank PJK

 

After the motor has heat in it and the valve covers are off I start with #1 at top dead center and go through the firing order at top dead center to ensure it is the most accurate I can get. I hardly ever have to adjust them. Takes about 15 minutes total to including pulling the covers and reinstalling them by myself.

 

the quickest easiest way is probably the way i was shown.turn the motor by hand and every time a valve comes up stop and check it it.no firing order or marks need to be checked on pulley and you can do one side of the motor at a time....

 

I found on some engines there is a difference of 2-4thousandths when you do TDC instead of the exht when intake closes, etc. small diff but just so you know. I do the tdc because its quick for me. I just know how much to adjust for optimum lash.

 

1-3-5-7 2-8-4-6 right down the line use a push rod inserted thru sparkplug hole to determine piston TDC

 

the quickest way that i have found is what ever valve is up at the time, top dead center way of doing it like this is may be .001 .003 diffrence not a really big deal but every one has got there own way of doing things it takes me about 12 min to pull valve covers off inspect do a valve lash check quick cyclender leak test and a lube of the rockers and put the covers back on thats after 7 years of doing it thou

 

marks at 90 degrees on timing ring

tdc each cylinder and run thru firing order

other way too confusing for me

 

Mike, it's a blown hemi.

 

Valves

We turn motor over till intake valve is just starting to close..then check exhaust...then turn over some more till exhaust is just starting to open...then check Intake. 1-3-5-7 go to other side 2-4-6-8...Easy as pie and it doesn't take long at all.

Troy

 

over the years adjusting them every way you can i find it easier like above using a pushrod to find tdc start with 1 then down the line 3-5-7 you will only go maybe a half a turn it will go quick then 2-4-6-8- but on 8 you will turn the motor over twice to get 8 up to tdc i can never seem to remember how the saying goes about the valves opening and closing then adjusting one are the other tdc is the best for me and fast everyone has there own ways its what works best for you good luck

 

Mike is 120 percent right. After the run is the most accurate. With the BAE block I am setting them cold at .013 compared to .016 with the KB block. Great point Mike.

 

The motor is a KB stage 10 block with AJ heads off of a nitro dragster. AJ set the heads up for alcohol and just plugged one of the spark plug holes. Engle cam that says to set valves at .020 in. and .022 ex. Dyno guy said to not worry about the .002 differance and just set valves at .020 after the motor was up to temp. Thanks for all the replies this is my first motor I've built not counting helicopter turbine engines but then again at least with thoughs you've got a manual to go by. PJK

 

how come nobody starts at #1 tdc and adjust intake and exh and turn motor 45 deg with firing order and adjust intake and exh again

 

I do it that way , but it's 90 deg. 90 x 4 =360

 

if you want the best way

http://www.insidetopalcohol.com/showthread.php?t=12415

 

My advice, pick a system that puts the lifter on the base circle of the cam.(the opposite side of the lobe)
I use the system that Will is refering to( "XO").
The key is repeatablility.

 

i meant 90 degree stuiped me