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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: Hard Headed Ken on April 12, 2013, 04:55:17 AM

Title: Series 60 Cam Shaft Specs ??
Post by: Hard Headed Ken on April 12, 2013, 04:55:17 AM
Anyone know if lift and duration specs are available for the various Series 60 cams, 12.7 and 14 liters?

Thanks,
Ken
Title: Re: Series 60 Cam Shaft Specs ??
Post by: luvrbus on April 12, 2013, 05:16:09 AM
I know what the lift is on different models but the duration for that I could ask Cole for you as I have seen him grinding his own for a 60 series as I remember he said there were 6 different cam and he didn't like any of the factory cams, he made a set of high torque cams for me to fit a 8v92 yep I am chasing the flat long torque curve on a 8v92 lol
Title: Re: Series 60 Cam Shaft Specs ??
Post by: Hard Headed Ken on April 12, 2013, 05:21:33 AM
Thanks Clifford, there's about 3 different ones I'm interested in. I'll get those part numbers later today.

Ken
Title: Re: Series 60 Cam Shaft Specs ??
Post by: Sam 4106 on April 12, 2013, 06:25:50 AM
Ken,

I am interested in what you are aiming to accomplish with a cam change. Whatever it is I'll bet you have the determination and tenacity to accomplish your goal.

Good luck, Sam
Title: Re: Series 60 Cam Shaft Specs ??
Post by: Hard Headed Ken on April 12, 2013, 07:43:23 AM
Sam, it's all about Eric, I have to beat his fuel mileage. I don't know why he didn't come to Blytheville, I would have paid for his fuel, it couldn't have cost more than 50 or 60 bucks with the fuel mileage he gets.

Seriously I'm still trying to increase my fuel mileage, it's just a personal challenge.

Clifford,
These are all 14 liter engines.

 Cam #               ESN           HP        TRQ     Compression Ratio  
R23533694     06R0907034     490       1550           16:1                  Compact Valve Train    Federal Engine

E23528309     06R1020212     575       1850           16:1                  STD Valve Train          Australia Eng (VNT but no EGR)

E23534735     06R0955240     630       1900        16.75:1                 STD Valve Train          Generator Eng (VNT but no EGR)

The peak torque for the generator cam is at 1350 compared to 1200 for the other ones and I know I might have to change pistons if I used the generator grind.

I would like to see the same info for the 14 liter Marine engine you have plus the injector part number. Don't spend a lot of time on this, it's just something I would like to know, I don't have to know.

Thanks,
Ken


Title: Re: Series 60 Cam Shaft Specs ??
Post by: TomC on April 12, 2013, 08:21:27 AM
Since you have an UltraShift, you shouldn't have to worry about low end torque RPM.

There are three generations of Auto/UltraShifts. The first was the AutoShift with clutch pedal-along with it's cousin the SelectShift for use on a mechanical engine. Then came the UltraShift with it's centrifugal clutch. This series I would watch against overpowering the transmission-it's not really the transmission-the clutch really never engages all the way. That's why the clutch life in the first generation of UltraShift was only around 100,000 miles (also depending on your driving). This is why Eaton came out with the UltraShift Plus, and it's electrically powered clutch-normal clutch, just controlled by the transmission. The Auto/SelectShift is still available, the UltraShift is not available, and the UltraShift plus is now made in a 6, 10, 11, 13, and 18 speed. If I were getting back on the road, it would be using the 18spd UltraShift plus with the highest ratio rear end I could get-which is 2.65-since the 18spd has an extra low gear (the 11spd has two extra lows, but not the close splits).
The nice feature of the UltraShift Plus and the Detroit DT12 is the hill start. When starting on a hill more then 3% (it has a sensor), the brakes will hold for 3 seconds after you release the brakes to get the vehicle rolling without roll back. Good Luck, TomC
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