C1 Solid Lifter Valve Adjustment

[Clem Z.]

not true 1.5 ratio

that was one of the reasons we used a pontiac 1.6 or 1.65( not sure what they were) super duty rocker arms on chevys back in the 60s. the looked stock and they were stamped steel. i think i still have a couple around here somewhere

[Dale Pearman]

I'd KILL for one *NM*

[Clem Z.]

Re: I'd KILL for one

it was neat but you had to do it with the engine running and that hot oil is a bitch. i still have my first set of "bandamire" clips used to keep the oil from flying all over the place. these are not the cheap ones they sell now but are made from spring steel. john bandamire was a drag racer from i think denver colo who supported his habit by selling these clips.

[ROB DAME MEM# 36211]

Re: C1 Solid Lifter Valve Adjustment

Thanks guys, I've kinda split the difference from all of your
input. I adjusted the valves cold at 12 + 18 only because the
covers were off and it was cold. Using the #1 TDC and Then
#6 TDC it was a piece of cake. Then rechecked hot seemed the
same to me.
I also replaced the intake gaskets and blocked off the heat cross over.
I read a post about this making the exhaust louder. I don't know
if it was that or the valve adjustment but this thing sounds the NUTS.
I'd be out driving it now, instead of writing you all if it
weren't for the used cast iron,slightly pitted but
not bad, thermostat housing I picked in Carlisle because of the #s.
Should have spent 3X for the NOS.
It's leaking at hose connection. Thought I'd let it cool and put some
Ultra Black or Copper Permatex between them and let set overnight.
Try it again when I get home from work Monday and see what happens.
Thanks again and take care Rob.

[G B.]

Do you mean a P&G valve gapper?

I've got one in the original wooden box. And Dale, you don't have to kill for it. I take checks.

[Clem Z.]

Re: Do you mean a P&G valve gapper?

thats it came in a little wooden box. since mine is missing where did you get it?

[Clem Z.]

Re: C1 Solid Lifter Valve Adjustment

blocking the the crossover seperates the engine exhaust into 2 seperate engines and this for some reason make the exhaust louder. we did the flat head fords with copper pennies in the crossovers just to make to dual exhaust louder and sharper never heard about the HP gain from the denser fuel charge.

[James F.]

Re: Do you mean a P&G valve gapper? Clem

Clem,
Smitty bought a P&G gapper, remember? He would have sold it after he saw what
go-nogo feeler gauges could do! Regards,

[Clem Z.]

do a google search,P&G valve gapper

if you want to see one.

[Duke W.]

Re: C1 Solid Lifter Valve Adjustment

By connecting the two banks via the crossover each tailpipe emits all eight primary exhaust blowdown pulses, which mutually damp to some degree. Since each exhaust outlet has eight evenly spaced exhaust pulses instead of four unevenly spaced pulses, the human ear perceives the sound as both quieter and less intrusive. This is the reason modern V-8s have under the car crossovers (It helps them pass the driveby noise tests.), and it is also the reason why a FI Sting Rays have a more guteral sound than any with carbureted engines, unless the crossover is blocked.

Duke

[Terry M.]

Re: Do you mean a P&G valve gapper? *TL*

Clem,
I picked up mine years ago at a swap meet - haven't seen one since. I'm missing some of the adaptors - the Chevrolet ones. Oh well.
Terry

[Dale Pearman]

The Exhaust Cross-over

acts like a plenum only on the exhaust side. In addition to less sound, a modest alteration in the torque curve occurs which benifits low RPM performance.

Dale.

[Mark Ring]

Re: The Exhaust Cross-over

The engine with a crossover will produce modest increases in torque below the torque peak as Dale has said. If you do not worry about the NCRS points, you can add a crossover pipe down near the tranny and accomplish the same quieting/torque effect without the added intake manifold heat and potential fuel percolation issues. Not NCRS spec but hot rodders have been doing it for years.

-Mark.