wreckeddc4

I just degreed my cams last night and id like to post my findings and see if guys think they seem normal or if i should do it over.

Its a ls vtec
gsr head decked .010
cometic 3 layer
blox tuner 2 cam (yea yea I know)
golden eagle gears

Well basically I checked v2v with this head last season before it was milled. But same cams same gears only difference is the mill.
After degreeing I ended up with -3ex -4in
at this setting my v2v is only .028. Is this not suffiecient?
When I did my gsr last year the results were +6ex +3in in a gsr stock deck height with a 2 layer hg, same head i use now. Last year the lobe seperation came out to be different and the v2v was good.

Should I setup degree tools again and start over? Is .028 v2v too little? I did do this with vtec manually locked in btw.

95 integra

iTrader: (2)

What difference does the mill make? The location of the valves and the cams are the same right? Maybe it would be slightly different if you had your valve seats ground, but even then it should only be larger in that case as the valves would be further "down and away" from each other.

crxsi1

ya is wat u need to check is ur p2v

crxsi1

dergree it back to where u had it

wreckeddc4

my biggest concern is the .028 v2v being suffiecient.
The head was on a different block before thats why Im degreeing them again.
P2v is fine its already been checked.
What I dont get is why the lobe seperation is different since last time I degreed the same cams, using the same checking method and specs.
Would timing belt tension affect that enough to skew the measurements?

95 integra

iTrader: (2)

Valve lash is tighter maybe? Could be a slight difference in the timing belt tension, I wouldnt expect much though. That is a pretty tight V2V clearance, Im guessing dialing out the cam overlap would help that significantly...

ninor

You should redo this, there is no way you should be comming up retarded on both with .010 mill and 3 layer head gasket, yet you were advanced last year with no mill and 2 layer HD.

One of your measurements was was not right (or both )

Anyway, think about it for a second your ex is different by 9 degrees, your intake is different by 7 degrees and really the only difference from last year and 2 layer head gasket to this year and .010 mill and 3 layer head gasket is maybe 0.005 tops or any at all.

To put this in perspective, one tooth on B cam gear is around 10.5 deg. in your case 9 and 7 difference just do not make sense...

If your measurements are correct, is your timing belt off a tooth?

For your other question that is WAY too tight of a valve celrance and I would not run that.

Also degree with 0 lash, I find it more accurate without slop, also substract valve lash from peak lift to find their mfg. peak lift if you care.

Rosko

iTrader: (1)

It has to do with the timing belt, if the head is decked or the gasket thickness is changed then the cams get closer to the crank and when the slack is taken out of the timing belt the gears would naturally be retarded, so in those cases the gears would need advanced.

I'm with the guy above, it sounds like it may be a tooth off. Are you going off of the open/close events or are you degreeing around peak lift centerline?

CHEETAH

iTrader: (2)

28 thou clicking clearance is fine.
to swing by 7 and 9 degrees, sounds like you are inconsistent, even with new LS block decked it shouldn't require a change of 7 and 9 degrees from the old block. are you using true TDC or or from the timing cover mark? sounds fishy, i'd recheck if i were you.

wreckeddc4

Update:
I tore down everything, reinstalled the timing belt, and I believe the cams were off.
I degreed again and got better results.
This time I got +6 intake +3 exhaust. These are the same numbers I got when I used a GSR block last year.