Hows my geometry look?

[Bashr52]

No lift:

Half:

Full:

Wipe:

Hows it look? FK8 with 1.4:1 rockers on my 2332.

[fastfil]

Looking pretty good to me, though from the pic it looks like you need to shim that rocker out some more. Could just be the pic.
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"...swingaxle...transaxle...same diff."

[mark tucker]

the angle of the full lift pic makes it hard to see but it looks good or might need to come down about .015" ~.040"
you want them to walk more than wipe, to high(more shim) you get into the wipe witch is trying to pull the valve, walk is just that, pushing down & walking across the lash cap. a lower rocker also quickens the begining of the lift cycle ( more ratio at the begining of the lift cycle)yes the ratio changes throughout the cycle.

[Bashr52]

Thanks for the input. I will try a thin shim under the rockers and see how it looks. I was surprised how good it looked already, considering it didnt take me long to find my max lift point, and when I started checking geometry, it was alomst dead on. I did have excessive rocker side clearance on that valve, which I believe could have caused it to walk more than sweep. All that has been corrected, and I will have another go at it and see how it looks.

edit: I am also getting above the advertised lift at the valve. Engle publishes .534, I'm up in the .569 range.... These are SCAT 1.4:1 rockers.

[fastfil]

Sorry for the confusion, I was talking about putting a shim beside the rocker (on the rocker shaft) to get it more centered on the cap.
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"...swingaxle...transaxle...same diff."

[Quokka42]

It looks spot on to me if that middle picture is at half lift, and the pattern looks spot on, too.
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There has only ever been one man who was perfect, and they nailed Him to a cross.

[Bashr52]

[jfats808]

Are you sure those are Scat, Scat usually has their logo on the arm. And the tips should be flame hardened. They actually look like Empi's and your getting about 1.48 ratio. As long as you have ample piston to valve clearance your geometry looks gtg. I look for the pushrod to be parellel to the head at half lift.
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2276 IDA's 86C 11-1 DD !
2017 48 Trijet DRLA's W125

[Bashr52]

I will have to check the package again. I could be mistaken, they may be bugpack.

[MURZI]

Make sure you check for coil bind at that level of lift........
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62 vert
2276
Tim’s welded heads
45 Dells
A1 sidewinder
Fk44 cam

[JasonBaker]

The "No lift" picture looks like the spring is straight, but something is looks crooked to me.
I really like that type of adjustment on rockers. I think the adjustments are way more accurate.

They look like mine, Mine are EMPI's. I have 1.25's though.

Regardless of what brand they are. They are much better than a set of worn out stockers and dont have wavy washers to break.

I had to switch to Chromoly pushrods cause the Bugpacks mushroomed.

[mark tucker]

I try to get the pushrod angle&cup angle as inline as possiable around full lift where the max pressure is.why would you want to be pushing at an angle at max pressure with a tiny adjuster screw that has a hole through it and threaded. also try to keep the adjuster as far up in the rocker as possiable,I usualy remachine the lower part of the rocker so there is no forging flash that keeps it from going up as most do.
as for the added lift that type of rocker is a variable ratio,as the lift increases the foot walks out and the pivit & contact get farther appart so the ratio changes. lowering it some more you can loose some of that lift but gain a quicker opening rate and make more power in most cases.

[Bashr52]

Well I thought I was gaining on things finally. Geometry looks great, but my lift is .567. My Tims heads are setup for a max lift amount of .550.... Now what?

[VIN]

i ran into the same problem, i called tims and verified, as i was getting .550 with a advertised of .536. i used thinner lash caps. which brought the lift down.
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Click to view image

[mark tucker]

change springs or rockers.most of the 1.25 like what you have check out at 1.33~1.35 ratio. bugpack 4046 springs should work or the cb ls1(I think) should also do the trick.

[Bashr52]

I've got a set of Berg duals around here somewhere, perhaps I will try them.

Thinner lash caps would have the same effect as shimming the rocker pads right? Both of them would extend the pushrod length or cause the adjusters to run in farther. My adjusters are almost all the way in currently, a thin shim may help correct that.

[jfats808]

4046 springs woukd be a cheap fix, what was your coil bind measured at?
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2276 IDA's 86C 11-1 DD !
2017 48 Trijet DRLA's W125

[Bashr52]

[mark tucker]

most of the time you can mesure the wire to determan if there going to work. Ive got oh so many miles on my bugpack 4046 springs,there a good spring.Ive never used the cb high lift spring.....yet