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Anyone ID these Sportster cams?

Discussion in 'Motorcycle Tech Talk' started by kenfuzed, Oct 24, 2013.

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  1. kenfuzed

    kenfuzed Administrator Staff Member

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    I've been trying to identify these cams but so far no luck. Any familiar with these? The only marking on them is IEB1, IEB2, IEB3, and IEB4. They came in a lot of parts removed from a 1986 or 87 Sportster that had previously been built up with Wiesco pistons and Andrews pushrods and lifters. Given all of the other upgraded parts I don't think they are stock cams.
    [​IMG]
    kenfuzed, Oct 24, 2013
    #1
  3. badinfluence63

    badinfluence63 Well-Known Member

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    I'd venture Edelbrock because of the EB initials?
    badinfluence63, Oct 25, 2013
    #2
  4. marc 55

    marc 55 Well-Known Member

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    marc 55, Oct 25, 2013
    #3
  5. hotroadking

    hotroadking Super Moderator Staff Member

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    I don't know but they have some serious duration and ramps on them...
    hotroadking, Oct 25, 2013
    #4
  6. FLHTbiker

    FLHTbiker Moderator Staff Member

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    Yea they do, I'm with marc55 on these could be Edelbrock
    FLHTbiker, Oct 25, 2013
    #5
  7. hotroadking

    hotroadking Super Moderator Staff Member

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    call Andrews...
    hotroadking, Oct 25, 2013
    #6
  8. kenfuzed

    kenfuzed Administrator Staff Member

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    Yup I actually posted on that same thread a long time ago and neither that guy nor myself have had any luck. The photo used was originally from that message post but mine look identical, same # stamping.

    Edelbrock has been no help, they won't provide support for any of the cams they used to make.
    kenfuzed, Oct 25, 2013
    #7
  9. FLHTbiker

    FLHTbiker Moderator Staff Member

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    Well they would make good paper weights then.
    FLHTbiker, Oct 25, 2013
    #8
  10. marc 55

    marc 55 Well-Known Member

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    Ditto...Talk about crappy customer service...With that experience I certainly would not give them any business...
    marc 55, Oct 25, 2013
    #9
  11. hotroadking

    hotroadking Super Moderator Staff Member

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    Edelbrock is a good company they may not have the
    intel on the systems, part of the problem with all the
    digital computer systems is nobody will go take the time
    to look shidt up anymore.

    I'd call ANdrews if they ground them they might be
    able to tell you...

    http://www.andrewsproducts.com/contact-us/technical-support

    Andrews Products, Inc.
    431 Kingston Ct.
    Mount Prospect, IL60056
    Phone: 847-759-0190
    Fax: 847-759-0848
    hotroadking, Oct 25, 2013
    #10
  12. Lucifer

    Lucifer Well-Known Member

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    Before Edelbrock had their own cams for their Performer RPM and Performer packages they recommended Crane Cams and their cams had the same specs as the H290 and 216-2b...so I Ass U me d Crane did Edelbrock cams...

    Sent from my GT-S7560M using Tapatalk
    Lucifer, Oct 25, 2013
    #11
  13. kenfuzed

    kenfuzed Administrator Staff Member

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    Yes I'll give Andrews a call, they are usually helpful. Edelbrock I believe has been phasing out all of their motorcycle offerings.
    kenfuzed, Oct 25, 2013
    #12
  14. olbill

    olbill Active Member

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    try Dan Baisley at Baisley Performance Portland Oregon
    olbill, Oct 25, 2013
    #13
  15. badinfluence63

    badinfluence63 Well-Known Member

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    As far as the numbers 1,2,3,4 will eventually lead to the lift and duration for each or possibly in which order they should go in the bike? I'm just guessing.
    badinfluence63, Oct 25, 2013
    #14
  16. kenfuzed

    kenfuzed Administrator Staff Member

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    Thanks, the numbers are the order/position for each of the 4 cams.

    I called Andrews and ended up being transferred to some guy who was obviously having a bad day. I can only assume he had received about 50 calls previously asking to identify other cams and I was # one-too-many because I had to sit through a rant about "numbers are meaningless" and "who cares what they are, measure them and use them". Needless to say, a wasted call.

    I had already measure the lift on these to be .487 which is slightly less than .490 for the more common N4/V4 cams from Andrews. The piece of info I'm still missing is duration and lift @ TDC which is far more important. I was hoping to get the specs without having to install them first.
    kenfuzed, Oct 26, 2013
    #15
  17. baggerpaul

    baggerpaul Well-Known Member

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    Ya kinda hard to figure that out. With out knowing what the center line of the cam is ground on .measurement of the cam lobe is kinda use less .when high performance cams deal with length and width. longer and wider on the lobes .when measurement is taken at the lobe you are only coming up with tappet lift not true valve lift. Truely inconclusive so you really need all the info on the cam card to figure out how to set up the installed hieght of the springs .looking at the lobes at a glance it has at shit load of duration.
    baggerpaul, Oct 27, 2013
    #16
  18. Lucifer

    Lucifer Well-Known Member

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    You figured out the valve lift to be .487,yes (lobe lift x rocker arm ratio) and you can see it's a long duration cam....
    Here's a list of Evo Sportster cams from Night Rider....Sifton Stingray cam has a lift of .48 and 250° duration.... but you're still guessing... unless you can find sifton cams have IEB as a casting number stamped on them...Install and degree wheel is probably the only way you'll know for sure what the specs are ....click on Camshaft Selection Form

    http://www.nightrider.com/biketech/hdcamsspecs.htm
    Last edited: Oct 27, 2013
    Lucifer, Oct 27, 2013
    #17
  19. kenfuzed

    kenfuzed Administrator Staff Member

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    Right, already calculated the lift but that number alone is worthless without figuring out the rest. Yet listening (or enduring the rant) of the guy at Andrews, someone who didn't know better would have been led to believe that measuring lift was all that was necessary.

    Also I'm not going to trust the numbers off the site listed above. There is already a fair amount of misinformation that they published years ago and never bothered to go back and fix (drilling slides being one). They have moved on to producing components for fuel injection and that site stopped getting updated or corrected years ago. Not bagging on them, a decade ago they posted some useful information on dyno tuning, but there's no way now to verify any of the other information contributed by others.

    I'm going to install them and take the measurements at the valves. Thanks for all the input.
    kenfuzed, Oct 27, 2013
    #18
  20. Lucifer

    Lucifer Well-Known Member

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    Yeah,I agree with you about the site,but figured the cam charts were copied,not their info...Wasn't a ton of choices for 86-90 Sporty cams...Might be a SE cam,try Harley Service,if they have one lol,then try Andrews again,see if you get a guy having a better day;)
    Lucifer, Oct 27, 2013
    #19
  21. Lucifer

    Lucifer Well-Known Member

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    here's an Andrews V4 ...86-90...so it's not that...

    Attached Files:

    Lucifer, Oct 27, 2013
    #20
    hdflea likes this.
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