Bring back good 14mm's

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Re: Bring back good 14mm's

Postby spencerdiesel » Mon Feb 29, 2016 5:00 pm

Is that why the rockentechs don't live? Or is it tolerances?
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
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Re: Bring back good 14mm's

Postby RCCUMMINS89 » Mon Feb 29, 2016 6:54 pm

I would assume it has something to do with both.
89 RC on shortened 92 diesel frame - NV4500 w/dual disc/4.10s on 37s. - Self built pump, "hot screw", lots of timing, True high volume low pressure lift pump, 62fmw/68/.7gated, 77lpm SAC Inj., Studs/O-rings,- 423/1220 Mustang - 11/16/2013 http://www.TheHungryDiesel.com full line dealer, if you don't see it please ask.
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Re: Bring back good 14mm's

Postby JQmile » Mon Mar 07, 2016 12:32 am

There's actually a number of Rocken Tech's that have lived.....there's even a few non-Internet guys running 'em here in California, but they're turned down.
1989 D250 2wd. Scheid 14mm VE pump and 5x25's, J&H Performance 47RH trans with Suncoast manual valvebody, dual wastegates, 62/65/14 S300, NX Dual Stage nitrous, 487 on fuel, 972 on the jug.
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Re: Bring back good 14mm's

Postby spencerdiesel » Mon Mar 07, 2016 7:40 pm

So something like 50 psi inlet pressure and the screw hanging out of the pump? :lol:
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
Muffler delete
spencerdiesel
14mm rotor
 
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Re: Bring back good 14mm's

Postby jdiesel_us » Tue Apr 05, 2016 4:19 pm

I love my ve pump but if crazy horsepower is your game the p pump is a much more reliable solution and isn't reliability why we love these old engines.
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Re: Bring back good 14mm's

Postby motorwood » Tue Apr 05, 2016 5:37 pm

The Rocken works fine if you feed it like Brian said to, back in the day.
'03 2500: utility body stock; '92 350 flatbed: maxed fuel, 354 spring, 6x.016's, 14mm H/R, 2.8plate, studs, springs, A1000 5/8 line, Super40 = 454hp 1080tq all fuel. Have added S3 66/74/.91, O-rings, home port job, Steedspeed t-4 manifold. Hp=437/857 :( 13mm P, 5x.025, he551+ht80 843hp 1thousand something trq. Broken 5th gear.
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Re: Bring back good 14mm's

Postby Rob_O » Fri Jun 24, 2016 3:25 pm

Rob_O
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