Quick and Dirty Method? [Archive] - Chevelle Tech

: Quick and Dirty Method?


66ssragtop
Feb 25th, 04, 5:53 PM
I've been searching every possible combination to find UDHarold's "Quick and Dirty" Method, but can't seem to find anything but references to it and instructions to search the forums because it's been posted many times. graemlins/clonk.gif Can someone help me out with either the instructions via email or a link to the topic? Thanks. graemlins/thumbsup.gif

BillsCamino
Feb 25th, 04, 6:25 PM
Try here...

http://www.chevelles.com/forum/ultimatebb.php?ubb=get_topic;f=4;t=018908#00000

66ssragtop
Feb 25th, 04, 7:01 PM
I found that one, but it doesn't tell you how to perform the "quick and dirty" method, unless I'm missing something. :confused:

pdq67
Feb 25th, 04, 9:03 PM
I think I get what you are after??

I think it is where you set everything up and then see if one lifter isn't raised/lowered more then the other with the intake off to get you in the ballpark and before you finish putting your motor together..

How far off am I guy's??

pdq67

427L88
Feb 25th, 04, 9:31 PM
Yeah, that's old school pdq, but the same thing. Only difference is that the measurement is reversed. Whereas as the intake valve is closer to the head indicating advance, the lifter is higher.

I just 'splained the Q-n-D method to a car club buddy and he's done it many times with the intake off.

" We used to rough degree cams that way" while he worked at an engine shop. Cool. He's rather older than I, so I say its an "old timer" method.

anyway, a quote from Mr. Brookshire, "I would suspect the cam is not where you think it is. Use my 'quick & dirty' method to check it.
With your valve cover off, turn #1 cylinder to TDC. Either both valves will be on the seat, or both valves will be a little off the seat. If both valves are on the seat, turn the engine another revolution.
Now both valves should be off the seat at TDC. I use something like a 6" Machinist's steel rule, and measure from the top of the retainer to the spring seat. The intake valve/retainer should be about .025" to .045" CLOSER to the head(I told you it wasn't an aggressive cam...). If it is .060" to .100", it is too far advanced, and that is the reason for your clearance problems. Re-checking and re-degreeing the cam should solve your problem.
If this does not, you may need someone to 'eyeball' it."

http://www.chevelles.com/cgi-bin/forum/ultimatebb.cgi?ubb=get_topic;f=4;t=016078

ddeennis
Feb 26th, 04, 1:37 AM
udharold and others helped me with this a few weeks ago and it is a great thing to know when building motors.........i was/still em having problems with idle,low vacuum reading and low cranking compression readings.

and when i did the quick and dirty method on my 80z i found out my cam is way retarded. the exhaust retainer was lower then the intake retainer.

and if it wasnt for this information i would have tried to cover up the problem with rhoads variable lifters and a dual plane intake.......so this method saved me some cash flow.

since i dont degree my cams in and take for granted the cam will be close into phase were it needs to be. i guess i have been lucky thru out the years til now........

but this was the first time i used a reground cam so the thinking is that the cam didnt have any advance ground into it.

but in anycase for me here on out i will be checking all the motors i build with this method.

when i did my search for the quick and dirty method i believe i looked under UDharold and i found the method described several times.....