Messages

1

Maintenance / Re: 302 Valve Adjustment

« on: November 03, 2008, 07:40:11 AM »

When we did my friends '69 Z-28 DZ302 we attempted the J&D's procedure. Well, we figured out pretty quickly that we did not have the original cam in their when we double checked the lash after we set them. What we ended up doing was going 295 on the intake and 28 on the exhaust (mostly because of the heat generated in the exhaust valve will cause expansion). Car runs like a raped ape for now and we have had no trouble with the performance. But at least I know what to get him for X-Mas now.

I dislike trying to set the valve lash while the car is running.

2

Maintenance / Re: DZ 302 Timing Valve Question...

« on: July 03, 2008, 01:42:18 AM »

Got it.I guess it's time to check and see what cam is in there.

Thanks guys, and yeah, we are thinking that she may be a different cam. To bad to cause this is a great way to do it. For now we are going "Old School" on it, getting it to ruin, and adjusting "by ear".

Also, I took everything off of the front of the Balancer, and am using a long ratchet to rotate the plant. No plugs of course.

3

Maintenance / Re: DZ 302 Timing Valve Question...

« on: July 01, 2008, 01:49:18 AM »

I am checking each cylinder at TDC btw.

4

Maintenance / Re: DZ 302 Timing Valve Question...

« on: July 01, 2008, 01:42:19 AM »

Ok, so I did it exactly as stated in the paperwork on the CRG tech guide. I adjusted each valve .026 Ex/.026 In, in the correct order, rotating the balancer 90 deg. each time. So I go back to check my work, and each cylinder reads .024 on Intake, and .018 on exaust... I am puzzled as in the guide it says that I should be reading .024 on both. So I am thinking that maybe, at some time in the cars life, that maybe the cam got swapped? Or is it reading right? Or What?


HELP

5

Maintenance / Re: DZ 302 Timing Valve Question...

« on: June 30, 2008, 04:01:54 AM »

lol, NVM! I get it. The table having 9 steps confused me, but it is indeed, TDC-90-90-90-90-90-90-90.

We should have it running in no time, but you know how it is... got to over complicate it and make all the stupid ass mistakes first...

6

Maintenance / DZ 302 Timing Valve Question...

« on: June 30, 2008, 03:22:20 AM »

I am helping a friend of mine set the valves in his '69 Camaro. I read the article here http://www.camaros.org/302valves.shtml which describes in great detail how it is done. However, this is where trouble comes into paradise for us...

You can adjust two valves at each 90-degree rotation point, starting at cylinder #1 TDC and turning the crank 90 degrees at a time, seven times (first measure and mark your balancer at 90-degree intervals from TDC).

Is the "Seven times" step a misprint? Case we tried it two ways, and neither is correct when we double check it. here is what we tried...

1) We rotate the balancer at 90 deg intervals 7 times for each set of valve adjustments.

2) We rotate the balancer at 90 deg 7 times the first time, and then only 90 deg each time after that.

But I am thinking that the quote needs to be read...

You can adjust two valves at each 90-degree rotation point, starting at cylinder #1 TDC and turning the crank 90 degrees at a time, nine times (first measure and mark your balancer at 90-degree intervals from TDC).

And that we set it TDC and adjust the first two valves, then rotate it 90 deg for each set of adjustments thereafter.


Now, am I a fool? Cause the other ways I tried did not work.


Thank you and Great site BTW.