[joedls]

Originally Posted by 94cobra69ss396

How did you adjust the valves if you were using the wrong firing order?

I didn't. Someone else built the engine. I just installed it in the car.

[Vettezuki]

Originally Posted by big2bird

Balance is everything in an engine. V-8's are , forgive me, inherently a POS.
Boxer engines are much better by design, IE, the pistions directly oppose each other, therefore balancing each other naturally, with no counterweights, and very little harmonics. Add individual intake runners like webers, they rev up much higher without internal forces trying to tear them apart. Capische?

Caporsche.

[Vettezuki]

Some Pics of the Heads. Click on the pics for Hi-Res.

[big2bird]

Originally Posted by 94cobra69ss396

I need more info on this because I'm not sure I understand. First, I think the cam that is in the engine has a firing order of 1-3-7-2-6-5-4-8 instead of the older firing order of 1-5-4-2-6-3-7-8. But lets say it has the older one. If the air/fuel is already traveling to 7 then 8 opens wouldn't 8 actually fill better than say 1 would because the air/fuel is already being sucked that direction? For 1 the air/fuel has to change direction from the back driverside to the front passenger side so wouldn't 1 get less then 8?

That just moves the issue to 6-5.

Do a search. You will find the rear piston on both Chevies and Fords run lean, burn/crack pistons, burn oil first, etc.

[94cobra69ss396]

Originally Posted by big2bird

That just moves the issue to 6-5.

Do a search. You will find the rear piston on both Chevies and Fords run lean, burn/crack pistons, burn oil first, etc.

Then that would mean the front drivers side piston would run lean on this engine.

[94cobra69ss396]

Originally Posted by Vettezuki

Some Pics of the Heads. Click on the pics for Hi-Res.

[

Are you going to have Glenn blend the combustion chambers? Those sharp edges they cut for the large valves need to be cleaned up.

[Vettezuki]

Originally Posted by 94cobra69ss396

Are you going to have Glenn blend the combustion chambers? Those sharp edges they cut for the large valves need to be cleaned up.

Once we know what intake and headers we'll be using for sure, he's gonna look at and touch up all three.

[Vettezuki]

BREAK IN
The head guy was pretty emphatic that you had to be strict about break in procedure for a solid flat tappet cam. Someting to the effect of once installed the motor needed to go straight to 2,500rpm and stay there for 20 minutes. How the heck do you do that on a new motor that isn't tuned for the intake and carb etc. Can you just get it in the ball park with the existing mild hydraulic cam so it start and runs relatively smooth and rich enough not to melt down, then switch the cams and do the break in, then final tuning.

BALANCED ROTATING ASSEMBLY
Since the principle advantage of the Solid Flat Tappet is spinning the motor towards 7k, maybe a little higher, doesn't the assembly need to be fully balanced?

HEAD PORTING
In order for the heads to continue flowing efficiently at this high RPMS, don't they need to be ported?

[big2bird]

Originally Posted by Vettezuki

BREAK IN
The head guy was pretty emphatic that you had to be strict about break in procedure for a solid flat tappet cam. Someting to the effect of once installed the motor needed to go straight to 2,500rpm and stay there for 20 minutes. How the heck do you do that on a new motor that isn't tuned for the intake and carb etc. Can you just get it in the ball park with the existing mild hydraulic cam so it start and runs relatively smooth and rich enough not to melt down, then switch the cams and do the break in, then final tuning.
You just set the timing at 16* at static with a 20 * stop bushing, set the idle jet a tad rich and go. Use Dino with 1,200ZDDP level and EOS. I just did this a few weeks back. If you have REALLY stiff springs, the cam makers want you to use Softer springs for break in, then reinstall the supplied springs.
BALANCED ROTATING ASSEMBLY
Since the principle advantage of the Solid Flat Tappet is spinning the motor towards 7k, maybe a little higher, doesn't the assembly need to be fully balanced?
Yes. Centripetal forces are exponential at higher speeds.
HEAD PORTING
In order for the heads to continue flowing efficiently at this high RPMS, don't they need to be ported?

I would do that anyhow.

[big2bird]

I meant rich, but I CAN'T EDIT.