Not signed in (Sign In)

Vanilla 1.1.5a is a product of Lussumo. More Information: Documentation, Community Support.

    • CommentAuthorjay rich
    • CommentTimeApr 12th 2010
    this one is for steve well i am down to in genral timing on valves and for me the valve cages were o ringed i tried to lap them in with no luck and a mess so i o ringed the and vac tested them on the cam i found i can time cylinder 1 2 7 8 just fine 3456 were out so i retimedit to get them in and 1 2 7 8 went out is the chart rite ? or did i goof can you re explain the way to cut and use the chart thanks ....jay
    Send me a copy of the chart and the layout of your valves from front to back. Ex1, in1, in2, ex2, ect.

    If i remember correctly you were doing the seal block twice inline. That would be a CW rotation of the crank and a CCW rotation of the cam?.

    David has a copy of the cam article in the Tips & Links. Read that and then if you still have any questions, I'll see if i can answer them.
    • CommentAuthorjay rich
    • CommentTimeApr 13th 2010
    i think that is what happen i agree fully if you time 1278 and turn the engine ccw its fine then if you tur the engine cw 3456
    there fine kinda funny it would be nice to see that try to run
    i was reading the westbury notes also call me nuts but i divided his cam cutting circle in to 45 degree sections
    just as the timeing is on a inline 8 1-6-2-5-8-3-7 so here is my idea cut clyiner one cams then go to 6 and so on and rember to cut them in a ccw motion i will send the chart to you and let me know if the gremlins are getting to me ....jay
    Did you use this chart to make your cam?

    It should give you what you need for the firing order given on the sheet.

    Does your valve arrangment match the pattern at the top of the sheet?

    With this chart you should rotate your cam to the degree shown at the left and cut all the lobes that show an X in it's column.

    I'm sorry Jay but I do not fully understand what you did. I know this chart worked for the seal so it should work on the straight 8.
    • CommentAuthorjay rich
    • CommentTimeApr 14th 2010
    yes i did and the valves fit the chart
    i also did that and for a test i cut one cam in the lathe and one in the mill
    and found this chart will work in the mill also i think it the 90 degree off between cylinder 2 and 3 but i think i fixed it
    i went back to wetburys notes and re read the realy fine print i used his cutting cart and divided it in to 45 degree sections
    it worked i cut it in wood first to test it but it worked in the mill i cut the cams just like the fireing order i-6 and so on
    but i rembered to cut the e.o. first exuhast first then i,o intake open this chart is great and the use wiht your was a breeze
    i will send you the pics of it also a can of gremlin be gone works great ....jay
    Good to hear that the chart is working out.

    If you use the chart and cut in the lathe you will get a curved flank and a flat bottom lifter will be good.

    If you use the chart and cut the lobes in the mill, I would recommend you use a ball nosed lifter or at least put a good sized radius on the bottom edge to allow the flat flank to raise the lifter without the bottom edge digging into the cam lobe. The lifter will also pop up and down faster so you may need to put a bit heavier spring on there. I imagine the RPM's will be kept to a minimum.

    I went thru the seal drawing problems. There were 2 different firing orders noted on the print. Mikey picked the one he wanted and the cam table was made. His matched the order that was used by the group build at the craftsmanship museum.
    • CommentAuthorjay rich
    • CommentTimeApr 15th 2010
    back to the drawing board ok i am at a lose help ....miss fireing on cylinder 2and 3 order they are backwards kinda funny ....jay