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| Author: | NRIbuggys [ Wed May 22, 2013 10:32 am ] |
| Post subject: | Fk-89 camshaft |
Good or bad for hillclimbin |
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| Author: | RaceBugg1098 [ Wed May 22, 2013 11:27 am ] |
| Post subject: | Re: Fk-89 camshaft |
get an FK-43 or 44 with some 1.4:1 rockers. You will be much happier IMO |
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| Author: | NRIbuggys [ Wed May 22, 2013 11:35 am ] |
| Post subject: | Re: Fk-89 camshaft |
I was lookin at a 2387 engine kit and that's the cam they run in it. But it says drag cam so ikd. It comes with the rockers you suggested. |
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| Author: | jon williams [ Wed May 22, 2013 2:23 pm ] |
| Post subject: | Re: Fk-89 camshaft |
Have heard you need very large heads and valve to make the fk89 work right. I know a guy that ran one in a 2332 he hated it. |
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| Author: | NRIbuggys [ Wed May 22, 2013 2:28 pm ] |
| Post subject: | Re: Fk-89 camshaft |
O44 ultra wedge 46x37 |
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| Author: | Rob H [ Wed May 22, 2013 8:35 pm ] |
| Post subject: | Re: Fk-89 camshaft |
I used to run one its all or notheing. |
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| Author: | rockrockets1 [ Sat Jun 22, 2013 9:48 am ] |
| Post subject: | Re: Fk-89 camshaft |
Got one i'll give ya..I ran it in a 2387 and it only made power on the top end .But man would it turn up.But for hill climbing IMO you want low end so you can get out of it and back in when you need to.It's kinda like climbing with a 1914 then changing to a 2276.I replaced it with a Engle 100 with 1.5 rockers It was the best woods set up I have ever came across . |
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| Author: | perrib [ Sat Jul 20, 2013 11:24 pm ] |
| Post subject: | Re: Fk-89 camshaft |
I ran the FK 89 in my dragster with 51 mm IDA carbs like said it is all or nothing. Power starts at 3500 rpm. Mine hit the rev limiter at 8000 rpms. If you were building a sand car an FK 87 would have better manners. Pick the rpm range you want to run in and go from there. Engle VZ 14, VZ 15, FK 65, FK 7, FK 42, FK 43 These are all going to pull hard and fast from idle to 4500 to 5500 rpms. For your heads an engle FK 8 cam, FK 8 or web 86B(faster accelerating version of an FK 10 cam would be a nice 2000-6000/7000 as long as you have close ratio gearing and the tires are not to tall or a T-2 transaxle. FK 65 is a ratio rocker cam like the 100 but with faster ramps for harder acceleration. The Engle FK 43 or 42 might just be enough to take advantage of those great flowing heads and use stock gearing. Most of the time off roading it is better to have 100 ft #s of torque at idle and 150 at 4000 rpms, that to have 180 at 7000 rpms. I watched these guys drag race up hill around and through trees that don't move and it didn't take long to realize the advantage of the small duration, high lift cam and 14 to one compression. Skynard's "oak tree your in my way" comes to mind when I think of Woodsbuggy competition with an FK 89 cam. 60 ft times in 1.8 seconds leaves little time to turn. |
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| Author: | NRIbuggys [ Sun Jul 21, 2013 12:24 am ] |
| Post subject: | Re: Fk-89 camshaft |
I ran my new motor today. I went with the vz25. It pulls hard on bottom end to me. But this is my first big Boy motor as well. So it just could be the bigger motor in general |
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| Author: | perrib [ Sun Jul 21, 2013 4:07 am ] |
| Post subject: | Re: Fk-89 camshaft |
That's a good cam it just does not have the lift to take full advantage of your heads. It is an old school cam when .500 lift in a vw engine was considered the outer limit for the valve springs. |
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