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Tractor Transporting Discussion Forum

RE: 5 or 6 speed

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06-01-2011 13:39:13

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The NV4500 5 speed is bullet proof. I put a short shifter ball in mine when I built it. All in all, I put $4K into the converson. Nice tight little shifts. With my few 2500 RPMs I tow more than my brakes can stop and don't need an extra gear.

After my Cummins Chevy I got the conversion bug, put a 4BT Cummins in my 68 Bronco, tooled up my VW pickup with a bigger 1.9TD and a Mercedes in a Jeep.

But I have to agree (with sarcasm): why waste all the money repowering. Buy one ready built. And I hold that thought only as long as I don't think about payments. And that an equivalent truck to mine is over fifty grand and too pretty to use. I had my truck 10 years when I repowered it.

Honestly, repowering a truck brings problems. Like headliners that are so old they need replaced, worn out turn signal arms and cruise control switches and dealer telling you that part is no longer available, and recommending LMC truck as a parts source.

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Walter Buller

06-01-2011 21:22:22

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 Re: RE: 5 or 6 speed in reply to WayneB, 06-01-2011 13:39:13  
Of course I could be wrong, but I think I can finish the job for under 3K. I found a well preserved 95 Chevy 3500 for $500, and a complete 1993 5.9 12v Cummins with 202K for $800. Assuming the NV 4500 costs maybe $750, and my mechanic charges $600 as he claims, I'll have about $2700 in it, plus a set of tires. Sure, it would be much easier and more convenient to buy such a rig outright, but I've not seen one around here, or on the net, except for a Cummins Ford for $4100. So I'll do this the slower and hopefully cheaper way, pay as I go, no notes, and then know what I've got when we're done.

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06-02-2011 06:13:03

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 Re: RE: 5 or 6 speed in reply to Walter Buller, 06-01-2011 21:22:22  
Yes, but there are also incidental costs. Motormounts, AC filter/dryer, new pump perhaps and freon, slave cylinder perhaps, fluids, not to mention the cost of re-sizing drive shafts. Alignment check, etc.

It will be quite a good deal.

When I finished mine, I was amazed at how well it drove, performed and over the years, the consistency of performance and longevity. The Cummins 5.9 12V is such superior engine.

Before you set a Cummins 12V with 202K, go to the Dodge or Cummins dealer and get a crankcase ventilation filter. It is a baffle plate that goes on the left side of the engine up under the injector pump. While it is only 6 bolts, a plate and gasket (@85.00) it is very difficult to replace in the engine bay. The lower pump brackets has to be removed, as well the lift pump. Will prevent front & rear main seal and gasket leaks later.

Keep us posted on your build. I'd be interested your approach to intercooling and fan setup.


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06-07-2011 04:49:30

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 Re: RE: 5 or 6 speed in reply to WayneB, 06-02-2011 06:13:03  
wayne, i would like more info on this ventalation plate, ive not known about it and my cummins has started leaking from the rear main seal, is one supposed to be replacing this thing periodicly?

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06-11-2011 20:36:28

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 Re: Crankcase Ventilation Baffle in reply to ericlb, 06-07-2011 04:49:30  
I replace mine recently. The engine probably has near 300K or more. My engine started leaking from everywhere. I was getting no pressure out my road draft tube. Could blow back through the ventilation filter with an air hose, with the filler cap off, and the engine would quit leaking for a while. Replaced it and the leaks stopped. It was clogged when I pulled it.
Engine starts with a bump. And since I put the engine in in 2004, I have never needed to hook up the grid heaters. Runs great. Just pulled a trailer 2200 miles without adding a drop of oil.
On the 24v and later the crankcase vent filter is a replaceable filter. I'd say Cummins recognized an issue and changed the engineer drawings.

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Walter Buller

06-03-2011 18:29:56

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 Re: RE: 5 or 6 speed in reply to WayneB, 06-02-2011 06:13:03  
I asked my mechanic about your suggestion of changing the gasket on that baffle plate. He said that we could certainly do this all right before installing the motor, but that in 60 years of making his living as a mechanic, and rebuilding every size of Cummins motor from those in pickup trucks to semi's, and larger, he has almost never seen that gasket start leaking. Have you had a different experience?

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06-07-2011 05:29:54

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 Re: RE: 5 or 6 speed in reply to Walter Buller, 06-03-2011 18:29:56  
What specific years are you talking about? I have a 2003 Cummins, do I have to do this? Thanks

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07-03-2011 08:07:27

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 Re: RE: 5 or 6 speed in reply to Stuart, 06-07-2011 05:29:54  
after the 12V, Cummins put in replaceable crankcase ventilation filters. No need to pull the baffle. Cummins must have recognized it as a problem. On the TDR site, when 12Vs were the most driven, it was a common write up. On mine, the gasket did not leak, it was the front and rear main, and other places. My dipstick would blow out. I could blow air up the vent tube with the filler cap off, and it would be OK for a month or so. The metal filter in the baffle was "growed up." Other than being the first time, and very hard to get at, the job is simple. Six bolts. THe fuel pump, the oil sender, the bottom pump bracket must come off. I would not call the job hard, but I would call it a PITA job. Took me all day. I think the second time, I could do it in 4 hours.

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Walter Buller

06-08-2011 09:24:06

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 Re: RE: 5 or 6 speed in reply to Stuart, 06-07-2011 05:29:54  

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Walter Buller

06-02-2011 12:13:05

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 Re: RE: 5 or 6 speed in reply to WayneB, 06-02-2011 06:13:03  

10-4. And thanks heaps for the info.

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