Australian Belly Tank

[generatorshovel]

Nonning (not far from Lake G ) had a max of 45c yesterday ( 113 degree Fahrenheit), if it rains on the lake with these temps, would it "case harden" the salt like quenching steel would ?
The temp had dropped to 31 today, which we are used to up there during Speedweek, but forecasters predict another few 40 + days ahead.
I , for one, hope this hot spell won't last too long, although Feb has history of being the hottest month where I live, I can't imagine Lake Gairdner being much different ?
At least a dry track looks likely this year,,,,
Tiny

I get a feeling it's going to be like 06 when the salt was like concrete and the heat was insane. You need to get a hobby Tiny, call yourself a landspeed racer? ......mate, you are the only person I know who is ready to go, no the only person I've ever HEARD OF who is ready more than a month early, weirdo.

Well mate, I'm actually late, I nom'd for 2012, but wasn't ready until a couple of months ago,
"I can't stand the rain" te de de de de de, doomp doomp"
Now I'm early,,,
Tiny

[grumm441]

Hey , can we use a chev v6 next year, this holden motor is doing my head in
G

[Milwaukee Midget]

Hey , can we use a chev v6 next year, this holden motor is doing my head in
G

Christmas is over, and now you're asking for a cookie cutter? 

[grumm441]

I was thinking more of something with 1.6 exhausts and 2.02 inlets
and a choice of roller rockers
G

[kiwi belly tank]

Just do a class jump & park a turbo on that underhead cam Buick!
  Sid.

[grumm441]

That's still not going to fix my rocker problems
I've got an Eaton M90 blower that I'm using to hold my office/room full of junk door open
G

[Jon]

Rockers still giving you grief Grumm?
Can't come up with a happy geometry with them?
Because they're an ordinary product or because your cam is pretty adventurous?

Cheers
jon

[grumm441]

Yes, yes and yes
In other news, I was looking at the interactive weather map
http://www.bom.gov.au/australia/charts/viewer/index.shtml?type=T&level=2m&tz=AEDT&area=Au&model=CG&chartSubmit=Refresh+View
Press the play button
It looks like its hot at Tiny's place
G

[generatorshovel]

HOT,,,that's yesterdays news, today's news,,,cool as a cucumber this morning, windy as last night, even rested the air con for a while.
Tomorrow the heat is returning,,I've got a cold, a MAN cold too (sook)

Grumm, the person who sold Gogz the cam,knows his stuff ? ,has the grind ever been used by anyone before ?

Surely you have a set of F! servo operated bumpstick replacements behind the blown door ?

Tiny

[grumm441]

You would be looking forward to getting to the lake 'cos it's cooler there than in your shad

The cam is a Formula Holden grind, so it was fairly common in an insane sort of a way
And yes, the cam guy knows what he was doing.
I'm just trying to get thru it without buying new rockers
I'll get it to work eventually.

I am going to look at a Hurcus lathe at school tomorrow.
Old school lathes, never worked hard and always cleaned
G

[wobblywalrus]

It is hard to make an informed recommendation without seeing it up close.  One thing to consider is the side loads on the valve stems during the valve movement.  The rocker with the least side to side movement of the tip across the top of the valve stem might be the least costly choice in the long run.  Less valve guide wear. 

[grumm441]

Grumm441,

Wouldn't it be faster/easier with other rockers?   Just a thought......
 
Fordboy

you bet it would. I had a discussion with my old boss about rockers and he made the same suggestion, it's just the current budget doesn't quite stretch that far.

G

[ol38y]

What sort of lift are you running? 

[Milwaukee Midget]

Unless I missed something - This was posted up a while back -

W A D E   C A M S H A F T S    P  T Y   L T D
     

           Profile          Actuation             Make/Model           R/Ratio
          1644a            Roller Follower Holden V6  3.8              In1.6 Ex 1.6
          --------------------------------------------------------------------------
           Cam Lift   Duration    Duration   Valve   Valve    Lift      Phase
                       Adv           @050     Clr    Lift     tdc        <)
          --------------------------------------------------------------------------
  Intake     361        300        249      0.016    0.5616    113        107
  Exhaust    361        300        249      0.016    0.5616    098
          --------------------------------------------------------------------------

                             Timing                  Timing
                             Adv                    @ 0.05
                          Open      Close        Open      Close
           Exhaust      77 Bbdc     43 Atdc      53 Bbdc   16 Atdc

           Intake       40 Btdc     80 Abdc      19 Btdc    50 Abdc

                                83                  35
                          Deg Over-lap        Deg Over-lap

                 Intake Centreline  105.5        Exhaust Centreline  108.5

If you're running the recommended rocker ratio, you're at ~ .560 valve lift after lash.

[ol38y]

Yup, they're right there where it's time to look at roller rockers. On the tractor motors I run they say after .550 lift it's time to go to rollers.