13 inch flywheel

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13 inch flywheel

Postby 92cummins89 » Thu Nov 13, 2014 7:52 pm

Putting a 13 " fly wheel an clutch in I can't remember if I read anything bout having in to shim the starter or not
1992 4x4, 4” diamond eye exhaust, nv4500, he351cw
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Re: 13 inch flywheel

Postby ellis93 » Thu Nov 13, 2014 8:03 pm

Our trucks came with a factory 13" Sachs clutch. If it had smaller then it was put in there by someone else.
I don't know about other brands but the south bend I have required no starter mods.
93 D250 ,5 speed,4.11s,k&n autometer tach pyro trans boost guages,GDS 60mm h1c 14cm,honed 5x10,hplp/reg,1/8 timing,M+H M2 fuel pin, tims cooler tubz
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Re: 13 inch flywheel

Postby 92cummins89 » Thu Nov 13, 2014 8:24 pm

Why do I see the "upgraded" 12.25 clutches kits to 13 inch
1992 4x4, 4” diamond eye exhaust, nv4500, he351cw
92cummins89
fuel screw!!!!
 
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Re: 13 inch flywheel

Postby RCCUMMINS89 » Thu Nov 13, 2014 9:08 pm

Because to the vast majority of the world a Cummins was not available until 94. No starter spacer one a single disc.
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: 13 inch flywheel

Postby 92cummins89 » Thu Nov 13, 2014 9:45 pm

So stock flywheel is 13 inch correct ?
1992 4x4, 4” diamond eye exhaust, nv4500, he351cw
92cummins89
fuel screw!!!!
 
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Re: 13 inch flywheel

Postby RCCUMMINS89 » Thu Nov 13, 2014 9:51 pm

Yes, but we have a lipped flywheel and therefore when getting a new clutch, you will still need a new flywheel
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: 13 inch flywheel

Postby 92cummins89 » Thu Nov 13, 2014 10:17 pm

Ahh any reason why it's lipped ?
1992 4x4, 4” diamond eye exhaust, nv4500, he351cw
92cummins89
fuel screw!!!!
 
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Re: 13 inch flywheel

Postby txs » Wed Dec 03, 2014 7:30 am

why would you need to replace the flywheel with the clutch, good machine shop can resurface the stepped flywheel, if it needs it. I have seen two different farm tractor flywheels that the pressure plate actually bolts to a raised lip, and they have to set up and grind the same amount off both surfaces. The dodges with the lip use the lip to center the flywheel, my 93 stock was not a 13" it was 12 1/4 with lip, so not all first gens were 13s. the later trucks with the six speeds and 13" clutch had to use a starter spacer because the ring gear on the flywheel was moved to the front of the flywheel. The diameter of the flywheel was increased a half or 3/4 of an inch to accommodate the wider bolt pattern of the later style 13" clutch.
93 w250 6 speed 4" exhaust, caution, work truck, she's no beauty. building 1 ton dually 4x4, dana 80, 48rh, 205 Scratch the one ton, bought frt. dually 4x4 98 12 valve with the tiny rear doors. rides so much better than the 93.
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