[Cammer-6]

Its been a while since Ive dabbled in upgrades.

Anyone used custom made SBC valves?

My H320 Crane cam requires one of 3 ways to compensate for reduced base circle.
1. cut cover
2.shim under lash adjuster,lash cap on valve tip(this is how Crane did it)
3.shim under lash adjuster,longer valve vs lash cap.

The pro flo and street flo Manely valves with reduced diameter under valve head werent available
when this cam came out,but its possible if I can get some blanks without keeper grooves machined to make it work.

The head Im working on now is a ported 67 head cut for all valves to have full seals

So whos done custom valves?

[TheSilverBuick]

I have custom Ferrea valves in my engine, unfortunately are stock sized (chevy exhaust diameter). I ended up cutting one cam housing for the bigger cam because I could not find lash caps thin enough for the thickness I needed.

In hindsight, and maybe in a future refresh, I would cut the top of the valve stem down to fit lash caps. Lash caps aren't a straight forward solution either, as the cam follower sits around the top of the valve, so either the follower slots have to be milled wider, or the sides of the lash caps trimmed off. I'd probably trim the caps and carry spares.

Correct valve length is the most straight forward answer, but then locks you into running a specific base circle cam.

With longer valves, lose a cam lobe and you can't throw on stock cam in. Where in my case, I have a stock cam in its own housing ready to put on if there is a cam/follower problem. With lash caps, ideally find a valve stem length that gets you a sets of caps that can be swapped for stock to smaller base circle cams. Let the caps be the adjustments, but of course need the sets either trimmed or sets of followers milled.

[Cammer-6]

lash caps are offered in .0600 and .100
yes the sides will need to be trimmed to fit the follower groove.
Good point on wiping a cam and being stuck with a longer valve.
That said Ive never wiped a cam.
I remember a fellow forum member wiping a new cam due to not dressing up the lobes
on new followers.
When you cut a cover you must mechanically retime the camshaft.
What size lash cap would you need for the cam youre running?
I have different regrinds from more than one source
2 from Crane,2 from Crower and some left from my sales of regrind/exchange
units before there were any repops made

Keep in mind there is some"adjustment" or compensation with lash adjusters

[694.1]

We milled my cover.
Of course, this slightly changes the cam timing.
We re timed the cam by:
Drilling a small hole for an 1/8 pipe plug over the #1 Intake spring retainer.
Set the cam.
Removed the dowel pin for the cam sprocket & re drilled with the cam property timed.
Seemed like a good idea at the time

[Cammer-6]

Originally Posted by 694.1

We milled my cover.
Of course, this slightly changes the cam timing.
We re timed the cam by:
Drilling a small hole for an 1/8 pipe plug over the #1 Intake spring retainer.
Set the cam.
Removed the dowel pin for the cam sprocket & re drilled with the cam property timed.
Seemed like a good idea at the time

I just rotated the cam sprocket and drilled a new dowel hole.
I had to special order the drill bit .002 smaller than dowel for press fit.
I also tried a cam timing bushing that could be run advanced or retarded.
Today we have Robs marvel sprocket

694.1 are you still running that H290 Crane cam?

[BMFH]

Hello All

Here is the Link to esslingeracing.com

They Produce the Profile Tips for the Valves, I have used then on several engines, they Help adjust the Valve Tip Heights when using Aftermarket Cams. They are Also Hardened.

The sides will NOT need trimming to fit the follower groove, the tips are 11/32" the Same size as the Valves.

They also make a Lot of Speed Equipment for the Ford 2.3 L Pinto Engine that is Still Raced in today's world.

The BMFH used them for its Roller Cam Modification.

https://esslingeracing.com/ford-2-va...-engines-parts

Take Care,

Dusty/BMFH

[Cammer-6]

in checking I no longer see listing for .100 lash caps
Ive found:
Crane .050
Crower .060 also have some for Pintos that have sides shaved
Manley .080
Comp Cams .080
prices vary from $17.50 set of 16
to $119

Originally Posted by BMFH

Hello All

Here is the Link to esslingeracing.com

They Produce the Profile Tips for the Valves, I have used then on several engines, they Help adjust the Valve Tip Heights when using Aftermarket Cams. They are Also Hardened.

The sides will NOT need trimming to fit the follower groove, the tips are 11/32" the Same size as the Valves.

They also make a Lot of Speed Equipment for the Ford 2.3 L Pinto Engine that is Still Raced in today's world.

The BMFH used them for its Roller Cam Modification.

https://esslingeracing.com/ford-2-va...-engines-parts

Take Care,

Dusty/BMFH

[TheSilverBuick]

My re-grind cam had the base circle reduced by 0.040", so the .060" caps would put it a smidge over the "spec". I believe the tolerance is +/- 0.025" so technically could probably get away with a 0.060" lash cap, but don't like the idea of being on the high side.

I've never lost a cam or follower either. I've reused followers with no re-dressing and put two different used cams into an engine with mixed followers. I also run a lot more oil to the top end and am a fan of sticky Lucas additive for these engines.

Originally Posted by Cammer-6

lash caps are offered in .0600 and .100
yes the sides will need to be trimmed to fit the follower groove.
Good point on wiping a cam and being stuck with a longer valve.
That said Ive never wiped a cam.
I remember a fellow forum member wiping a new cam due to not dressing up the lobes
on new followers.
When you cut a cover you must mechanically retime the camshaft.
What size lash cap would you need for the cam youre running?
I have different regrinds from more than one source
2 from Crane,2 from Crower and some left from my sales of regrind/exchange
units before there were any repops made

Keep in mind there is some"adjustment" or compensation with lash adjusters

I've cut a very rough cam housing into sections and likewise cut a cam that had a wiped lobe just to see what it looks like in operations. Had to disassemble a lash adjuster and make it "solid" with washers for a real good view, but the lash adjuster in a neutral position has a TON of up and down range. I know its recommended to shim them up the amount the base circle is reduced, but I'm not really sure its needed. Its like +/- 0.2" range of motion on 0.0x" cam cuts.

[Cammer-6]

shimming the lash adjuster is more for centering on the follower.
Agree almost .200 travel.
But Ideal would be to center it in travel
Also guilty of hacking up some scrap covers to gain measurements