Re: 440 struggles past 4,000 rpm
[Re: Torquemonster440]
#2671991
06/30/19 04:32 PM
06/30/19 04:32 PM
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Joined: Jun 2008
Posts: 3,916 usa
lewtot184
master
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master
Joined: Jun 2008
Posts: 3,916
usa
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The cam is the .528 solid purple shaft. 1.5 ratio Crane ductile rockers. 5/16" Crower push rods. The pushrods did rub slightly, I used one .015 " spacer shim on each side to achieve clearance next to the intake runners.The springs are Comp 26918-16 , recomended by Comp. 1.8" installed height. Where I exercised some judgement on my part, was to use two .030" shims under each spring to increase my seat pressure from 125 lbs closed to 147 lbs closed. I now know this is not the correct way to achieve more seat pressure. But,by my math of 1.8" installed height -.502 net valve lift, -.060 shim height and a coil bind height of 1.10" I'm still left with .138" clearance from coil bind. I'm really hoping those shims are not my problem. I have visually confirmed that the springs are not close to binding as well.
those crane ductile rockers will check somewhere between 1.57-1.6 true ratio. your actual lift at the valve will be .530-.540. the .028"-.032" recommended lash is somewhat loose; i'd try .022".
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Entire Thread
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440 struggles past 4,000 rpm
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Torquemonster440
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06/27/19 07:29 PM
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Re: 440 struggles past 4,000 rpm
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pittsburghracer
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06/27/19 07:55 PM
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Re: 440 struggles past 4,000 rpm
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fast68plymouth
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06/27/19 08:12 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/27/19 08:45 PM
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Re: 440 struggles past 4,000 rpm
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Cab_Burge
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06/27/19 09:15 PM
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Re: 440 struggles past 4,000 rpm
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68LAR
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06/27/19 10:26 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/28/19 12:04 AM
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Re: 440 struggles past 4,000 rpm
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krautrock
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06/28/19 12:57 AM
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Re: 440 struggles past 4,000 rpm
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lewtot184
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06/28/19 02:14 AM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/28/19 02:01 PM
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Re: 440 struggles past 4,000 rpm
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lewtot184
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06/28/19 03:42 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/30/19 06:29 PM
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Re: 440 struggles past 4,000 rpm
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fast68plymouth
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06/30/19 06:51 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/30/19 08:50 PM
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Re: 440 struggles past 4,000 rpm
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fast68plymouth
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06/30/19 09:31 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/30/19 10:04 PM
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Re: 440 struggles past 4,000 rpm
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krautrock
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06/30/19 10:54 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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07/01/19 12:57 AM
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Re: 440 struggles past 4,000 rpm
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GTX MATT
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07/01/19 04:26 PM
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Re: 440 struggles past 4,000 rpm
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lewtot184
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07/01/19 06:15 PM
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Re: 440 struggles past 4,000 rpm
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fast68plymouth
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06/27/19 10:18 PM
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Re: 440 struggles past 4,000 rpm
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lewtot184
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06/30/19 08:32 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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07/03/19 04:17 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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07/28/20 01:36 PM
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Re: 440 struggles past 4,000 rpm
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moparx
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07/28/20 05:10 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/27/19 08:23 PM
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Re: 440 struggles past 4,000 rpm
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RapidRobert
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06/28/19 11:44 AM
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Re: 440 struggles past 4,000 rpm
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ChrgrCuda
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06/28/19 12:18 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/28/19 01:55 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/28/19 12:19 PM
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Re: 440 struggles past 4,000 rpm
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GTX MATT
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06/28/19 01:17 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/28/19 01:58 PM
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Re: 440 struggles past 4,000 rpm
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GTX MATT
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06/28/19 02:10 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/28/19 02:37 PM
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Re: 440 struggles past 4,000 rpm
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krautrock
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06/28/19 03:56 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/28/19 04:04 PM
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Re: 440 struggles past 4,000 rpm
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GTX MATT
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06/28/19 04:39 PM
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Re: 440 struggles past 4,000 rpm
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ChrgrCuda
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06/28/19 05:16 PM
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Re: 440 struggles past 4,000 rpm
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lewtot184
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06/28/19 05:21 PM
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Re: 440 struggles past 4,000 rpm
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fast68plymouth
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06/28/19 05:41 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/28/19 07:59 PM
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Re: 440 struggles past 4,000 rpm
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fast68plymouth
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06/28/19 08:18 PM
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Re: 440 struggles past 4,000 rpm
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madscientist
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06/28/19 09:18 PM
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Re: 440 struggles past 4,000 rpm
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sgcuda
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06/28/19 10:26 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/28/19 11:02 PM
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Re: 440 struggles past 4,000 rpm
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fast68plymouth
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06/28/19 11:07 PM
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Re: 440 struggles past 4,000 rpm
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viperblue72
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06/29/19 12:13 AM
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Re: 440 struggles past 4,000 rpm
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Brian Hafliger
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06/29/19 04:09 AM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/29/19 09:01 PM
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Re: 440 struggles past 4,000 rpm
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fast68plymouth
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06/29/19 11:17 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/29/19 11:43 PM
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Re: 440 struggles past 4,000 rpm
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sgcuda
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06/30/19 01:16 AM
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Re: 440 struggles past 4,000 rpm
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MR_P_BODY
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06/28/19 08:15 PM
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Re: 440 struggles past 4,000 rpm
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TonyS451
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06/28/19 01:19 PM
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Re: 440 struggles past 4,000 rpm
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cgall
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06/28/19 01:38 PM
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Re: 440 struggles past 4,000 rpm
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Torquemonster440
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06/28/19 02:00 PM
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Re: 440 struggles past 4,000 rpm
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Exit1965
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06/28/19 08:49 PM
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Re: 440 struggles past 4,000 rpm
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johnnmo
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06/28/19 09:03 PM
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Re: 440 struggles past 4,000 rpm
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oldiron
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06/28/19 01:36 PM
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Re: 440 struggles past 4,000 rpm
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MoonshineMattK
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06/28/19 03:53 PM
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