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09-29-2016, 06:49 PM
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#41
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Name: dmigz57
Title: Too Much Time
Status: Not Here
Join Date: Feb 2010
Location: Central-Cali
Member`s Gallery
Posts: 661
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I ran a No Limit MFG cast cam and 13mm this year with no problems. It's actually a stock 24v cam that Eric re ground for me.
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99 Dodge Ram "Top Gun" West Coast LPS
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09-29-2016, 08:54 PM
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#42
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Name: Inbred Inline
Title: Bastard child builder
Status: Not Here
Join Date: Dec 2014
Location: SE Michigan
Member`s Gallery
Posts: 370
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Quote:
Originally Posted by jasonc
What brand cast cam was it, anyone had a Hamilton break?
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Mine is a Hamilton cast
__________________
1994 Chevy RCLB C1500 6BT NV4500
2011 GMC CCLB 3500HD LML - STOCK
1992 Club Car, Kubota z430 "Inbred Inline Jr"
2000 Chevy CCSB C3500 3.0 Pro Stock 4x4 "Inbred Inline"-broken junk
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09-29-2016, 09:07 PM
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#43
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Name: RacinDuallie
Title: Black Sheep Racing
Status: Not Here
Join Date: Apr 2006
Location: Supporting Northeast Diesel Racing
Member`s Gallery
Posts: 17,369
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Joining this club. * Fingers crossed.
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12-09-2016, 08:26 PM
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#44
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Name: 98 12valve man.
Title: No farms no Food
Status: Not Here
Join Date: Jan 2014
Location: West palm beach, FL
Member`s Gallery
Posts: 69
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Maybe my heads in a fog right now , but can someone tell me what running a 13mm pump has anything to do with snapping cams? I can understand if your talking about spinning high rpms (4500+) for sled pulling, but drag racing and getting up to 4K rpms during shifts at max, I can't see how it would have any affect on breaking a cam?
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Taylor- 98 12v,
Motor- 5x.020 HSI injectors, billet s475, Hamilton 188/220, and a lot more.
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12-09-2016, 09:12 PM
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#45
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Name: Rich dzl
Title: 12v guru
Status: Not Here
Join Date: Mar 2011
Member`s Gallery
Posts: 741
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Takes more effort to pump more fuel , the angle of the factory gear teeth pushes the cam to one side cast don't flex well
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12-10-2016, 08:00 AM
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#46
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Name: biggy238
Title: Too Much Time
Status: Not Here
Join Date: Aug 2008
Location: Just North of Wrong
Member`s Gallery
Posts: 10,822
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The post from Zach a few pages back explains the stresses on the cam, but not why so much.
Every lobe on the cam, every stroke of the pump, every piston stroke and every time a tire hits something is a change in the inertia of the power train. Each time this happens, the change in rotational speed has to be absorbed somewhere. If a component isn't strong enough to transfer that force (dissipate it) stress risers in that component (Zach post) will cause enough force to overload the part, and it will fail.
With a large injection pump comes high(er) torsional load, and if the inertia changes like some of these guys described, the energy has to go somewhere.
I'll probably get my ass handed to me for this, but it's what I think I know.
Something smart goes here
__________________
Check out @bdmaximusworx
05.5 Campanella White TDi Jetta 5spd 45.5MPG
-Little Sexy
'10 Silver F250 CCLB 4X4 6.4L cummins Swapped
Insta @trash.panda250
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12-22-2016, 04:42 AM
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#47
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Name: Levi_plummer
Title: Too Much Time
Status: Not Here
Join Date: May 2012
Member`s Gallery
Posts: 346
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Quote:
Originally Posted by 98 12valve man.
Maybe my heads in a fog right now , but can someone tell me what running a 13mm pump has anything to do with snapping cams? I can understand if your talking about spinning high rpms (4500+) for sled pulling, but drag racing and getting up to 4K rpms during shifts at max, I can't see how it would have any affect on breaking a cam?
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I am the OP.. My 1-2 ahift is around 5,500rpm and after that it's around 4,900rpm. I am tearing this motor down to go bigger with a billet cam (230/240) and try to keep alive. For anyone curious my setup worked great with a cast cam/13mm p&b pump and I ran the billet scheid cover with the bearing for the nose of the cam.
__________________
92 W250 sclb. "Jinny" 962/1472. 7.08@98mph RIP..
96 sclb 4x4 new racetruck in the making
97 sclb 4x4 tow rig
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12-22-2016, 06:16 AM
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#48
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Name: Drothgeb
Title: Almost Fast-N-Loud
Status: Not Here
Join Date: Sep 2010
Location: Maryland
Member`s Gallery
Posts: 820
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Are you winding the truck in your sig that high between shifts.
__________________
95 RCLB 4WD
10.66 sec, 128.93mph
I'm not a Cummins expert, but I did sleep at Holiday Inn Express
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12-22-2016, 08:04 AM
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#49
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Name: RD TRCTR
Title: Diesels, Burn Outs & Tits
Status: Not Here
Join Date: Oct 2012
Location: MI
Member`s Gallery
Posts: 652
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Quote:
Originally Posted by Drothgeb
Are you winding the truck in your sig that high between shifts.
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I saw the OP's truck in action at Woosley's back in May. And he has stated above, yes, he is winding his '92 that high between shifts.
__________________
2018 3500 G56 unicorn
2006 2500
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12-22-2016, 08:38 AM
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#50
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Name: 97rada
Title: Too Much Time
Status: Not Here
Join Date: Feb 2008
Member`s Gallery
Posts: 5,410
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Quote:
Originally Posted by Levi_plummer
I am the OP.. My 1-2 ahift is around 5,500rpm and after that it's around 4,900rpm. I am tearing this motor down to go bigger with a billet cam (230/240) and try to keep alive. For anyone curious my setup worked great with a cast cam/13mm p&b pump and I ran the billet scheid cover with the bearing for the nose of the cam.
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Are you running better tires yet ?
__________________
Austin
tow truck- 14-3500 with tuning
toy truck -94 rclb auto- 5.2x with a lot left. Shooting for 4s
Any intelligent fool can make things bigger and more complex...it takes a touch of genius- and alot of courage to move in the opposite direction.
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12-27-2016, 11:19 PM
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#51
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Name: Levi_plummer
Title: Too Much Time
Status: Not Here
Join Date: May 2012
Member`s Gallery
Posts: 346
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Quote:
Originally Posted by 97rada
Are you running better tires yet ?
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Not just yet.. I am planning on building a 96 I just bought. It will get coilovers on all four corners with a single leaf rear and caltracs. Logan Yelton and Tim Wright will be doing all the chassis work and the engine and transmission work I don't do. I plan to put it on a 30" slick then. I also have a schedule runner and O/S valves for the head. It will keep a wet block for street ability. Planning on an sxe88 and up in the air on modified non intercooled pistons or weisco's.
__________________
92 W250 sclb. "Jinny" 962/1472. 7.08@98mph RIP..
96 sclb 4x4 new racetruck in the making
97 sclb 4x4 tow rig
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