Bad-Boy 92 inch 1952 Pan

[Dragstews]

Another .010" off the seats and a 45* backcut on the intake valve head should have it in the ballpark ..

!! .. Dang Hot-Rod cams .. !!

In the park, but not made it to homebase just yet.. Bout .010" away from target ..



Got there ... Yippy-Ki-Yi Yaaaaa !!

[Dragstews]

``

[DoomBuggy]

You can box those up and ship them to me and I will be happy to test them out for ya....

[Dragstews]

That's a very thoughtful offer ..

But do think I better run down the tests ..



One of those tests showed this problem ...



The lifter blocks are 76-up stuff and was on the motor when it came to me .. I did a check on the ware and gave em a green light for more miles ... Did order S&S chromoly pushrods cause the seat pressure is at 171# valves on seat and around 385 at hi-lift .. It had alum. ones in it ... Now here's the weird part, the tappets are not 48 to 52 ... See how much thread is showing ? Ok, alright, wanted holey lighting tappets for this motor anyways ... (Matches the CB and Gen idle gears, Lol)







" Now here's the weird part, the tappets are not 48 to 52 ... See how much thread is showing ?"

Lets see if that statement holds water ...
Going to pull the rear lifter block off and compare the tappets to a known 48-52 tappet ...

[Dragstews]

Well, if that shit don't stink !!



48-52 is on the right and what the 52 had in it on the left ..
AND ... They are .005" OS

... /// https://youtu.be/QblkQ-J6zio \\\ ...

[DoomBuggy]

The joys of 60+ years of "fixes". Sounds a lot like my motor before T-Bone and you got a hold of it. ( T-Bone did the bottom end, Jesse the top end. )

[Dragstews]

Got em on order ..
Had to order them from Eastern (The manufacture) cause VT only carried std size ...

Holy Tappets here we come ..

The joys of 60+ years of "fixes".

Just like a can of worms ..



Gotta decide which ones to keep and which ones that can be use as bait ..

[flatman]

You can also lighten the holey lifters more by grinding flat on the holes on both sides. Think of it as kinda hour glass shape looking at the lifter from front to back. How tall are knuck lifters compared to pan?

[Dragstews]

Not much worried about the weight ...
What I like bout the holy tappets is a bit better lubrication in that area of the valve train ...

And the knuck tappets are way out in left field ...

[flatman]

just a general question are knuck and pan lifters the same od ( not counting oversizes)?

[Dragstews]

Think so .. std size is .731" O.D.
Wasn't until the Evo's they got more beef ..

[flatman]

thanks , really like the pics and info

[Dragstews]

As Popeye would say;



Well, blow me down ... !!

... /// https://youtu.be/jBdqk5uhM7g \\\ ...

(! Yummy, Olive Oil did a make-over ! )

[Dragstews]

[Dragstews]

Love these James super duty gaskets ...



This motor is just about done ..



Owner is picking his parts to run on the rest of the scoot ..
Some talk went down, but it's his gig on how he wants it to look ..

I'm sure whatever this motor finds a home in, it'll be slick as a minnow's peter !!