[FourEightyNine]

Ok new idea.

This is somewhat a long shot but easily checkable and would explain everything. When I built the motor I put on an adjustable timing chain. The kinda that can go 6 degrees adv or ret. We installed it straight up.

When we started the motor for the first time there was an odd noise coming from the timing chain area, we stopped to check everything we could in the motor. Started it again and it wasnt nearly as bad. Did this a couple times on/off and so forth. After a minute or two of good run time the sound went away.

Now if somehow the adjustment shifted when we started the motor(we loc-tited and torqued the bolts to spec on the timing chain) the rotation of the motor would retard the timing, and eventually it would not be able to retard anymore causing it to stop moving(the sound would stop).

So if the motor is now 12 degrees retarded( I think thats how much it could possibly go, waiting till monday to talk to Mike Wolfplace about this theory). This would explain why the motor didnt come on hard till high rpm.

Also if 1 degree = 100 rpm, then if it is installed straight up where it should be, than that would put my power coming in at 5K since it is coming in at about 6200 right now. We will see!!!

 

[Kevin R]

Sure could be posible Brian. Get that sucker apart and check it out:yes:

 

[Dave]

I saw that You have a two piece cover on there. You can't rule it out till You look now. :yes:

It could happen, but I'm not betting on it.

 

[FourEightyNine]

First thing to do is a compression test to see if it is lower than what it should be.

If it hasnt shifted, it might have been the actual chain, when we put it on it was very tight(I wonder if it wasnt completely seated) and once it sat down onto the gear it was a tooth off.

 

[1966malibu]

Brian you are not going to really know until you pull the cover. Just do it and you will know how to proceed from there :yes:.

Greg

 

[FourEightyNine]

I will figure it out tomorrow or tuesday. If it is off than that is definitely gona be the problem I am having. And if I find that problem there are a couple big dogs who better watch out:yes:

 

[66SSFan]

I could be wrong, but if the cam where retarded it would raise the rpm power band and advancing the cam would move the power band down in rpm right?? Its been a long day and I could be out of my mind
Although its possible it would be very uncommon to have the adjuster back off. Either way it needs to be checked.

 

[kettbo]

Yes,
Retarded cam timing is more top end power
Adv timing is more bottom end power

 

[66 Buick Special]

Mike,
You're right and that's what Brian is saying as well.
His power isn't coming on until 6200 when he was expecting it to start around 5000.

 

[FourEightyNine]

Timing chain didnt shift. Found out the initial sound(not a big deal). The cam is 8 degrees retarded. Its gona haul ass now boys

will elaborate later.

 

[66 Buick Special]

Sounds like you've got one of those "self-adjusting" gears.

Or maybe your timing set overheard you say "start retard" and thought you were talking to it.

 

[Dave]

So, let Me get this straight. The cam IS 8* retarded?

If it didn't slip, then You went the wrong way?

That thing should move out now.:thumbsup:

 

[FourEightyNine]

Yes right now the cam is 8 degrees retarded, should be straight up or a couple advanced.

Berg said I am blowing atleast 60psi of cylinder pressure out the window. So if I had it straight up it would run the same number if I had 7:1 compression:yes:

Either the cam is ground off or the timing set I have is off. Shoulda checked it when I did the motor but I didnt realize how easy it is to degree a cam.

 

[Dave]

You should order a degree wheel. It'd be nice to have.

 

[kettbo]

The change in the beast should be profound!

 

[FourEightyNine]

You should order a degree wheel. It'd be nice to have.

It would be nice and I am going to borrow one, but since my ATI balancer is marked 360degrees around that also works. I just need to borrow the wheel to verify that my pointer is accurate.

 

[primernovaben]

when are you gonna get to it? if it pulls the wheels with "7.1:1" compression i wonder what its going to do with its full potential..... better get a new bumper

 

[FRYNTYR]

Bumper scraping wheelies baby,,,,,,,,,,,,,,,,,,,,,,,,!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Sweet!!!!

Just a quick check in from the dunes,,,,,,,,,,,,,, having a blast and riping up the sand. Talk to you all soon.

 

[FourEightyNine]

when are you gonna get to it? if it pulls the wheels with "7.1:1" compression i wonder what its going to do with its full potential..... better get a new bumper

I am gona go adjust it in a couple minutes. Then gona scour the town to see if anyone carries gaskets. Like I was telling Darryl its like I hit the nitrous button

I think it ought to do a little better freeway burnout nowl

 

[FourEightyNine]

1.5 degrees advanced now. And if it scraped the bumper I would leave it there and be proud of it