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  #16  
Old 02-14-2010, 10:22 PM
starmilt starmilt is offline
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I'm thinking if it all started for the oregon loggers it will be a low end cam and that would be sweet, I'm not worried about anything over 2500 rpm's.
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  #17  
Old 02-14-2010, 11:26 PM
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Some one else on OBN was working on a high(er) RPM horsepower cam that was specifically intended for turbo applications but I haven't heard much from him lately.

I tip my hat to anyone that tries to pioneer some advances with these engines. As we've seen its no easy feat to pull off on your own.

2500 RPM is beyond what I need even with overdrive locked out, so I would definately still opt for the torque cam option if it ever comes up again.
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  #18  
Old 02-15-2010, 12:44 AM
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Quote:
Originally Posted by timothyr View Post
russ...in all of the above quotes it sounds like the original design was for NA, but you installed it on a turbo with no ill effect...is this correct?

the other question is how noticable of a change was it?
(obviously thats subjective, but seing as I am looking at tearing down the motor and freshening it up before I boost it, $200 seems like a reasonable amount if the butt-dyno is happy while waiting to get boosted)
works great with the turbo, helps low end spooling, I have been a diesel mechanic for 30 years and my butt dyno likes it, I built my truck from a shell so I have no before and after, sorry.
OTOH I will never build another IDI without one.

And this info can be taken at face value, my buddy has the same truck as i do, his is all stock, we have the same turbo setup, I make 10lbs of boost at 2k under load and can pull a heavier camper up a hill one gear higher than his truck and camper, his makes 10 lbs at about 2500 . When I bought my cam they told me it helped low end al ot since the loggers were always idling around, I will see if the original shop that helped them has any dyno info.
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218/461 on the dyno. after 80k miles, wanted to make sure she was broke in.
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  #19  
Old 02-15-2010, 01:45 AM
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Type 4 how many miles have you got on your cam.
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  #20  
Old 02-15-2010, 09:00 AM
caleb6.9 caleb6.9 is offline
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Typefour, if you increase the overlap with the cam, couldn't that help to bleed off some of our high compression without having to shave the pistons? That would be great.
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  #21  
Old 02-15-2010, 09:44 AM
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Quote:
Originally Posted by starmilt View Post
Type 4 how many miles have you got on your cam.
30k trouble free miles
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91 f 350 cc 4x4, 3:55 gears. zf 5, 7.3 ATS 093 with bigger comp wheel, intercooled with cutdown 7,3 ps IC all gauges ignored with good aftermarket ones. Head studs, balanced . 12 psi 1k pyro under load way better mileage than the 460.

218/461 on the dyno. after 80k miles, wanted to make sure she was broke in.
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  #22  
Old 02-15-2010, 09:45 AM
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Originally Posted by caleb6.9 View Post
Typefour, if you increase the overlap with the cam, couldn't that help to bleed off some of our high compression without having to shave the pistons? That would be great.
Yes but it would kill the torque.

Ok just got off the phone with the cam shop. They dont have any hard data onthe IDI.But they have a customer that does the GM diesel with the same grind they have a 12% increase in torque and HP. And the boost and torque numbers come is 200rpm sooner.
this is on an engine dyno not a chassis so the gain will be less% on a rolling road.

He says if someone wants to do a before and after dyno test ,he will drop the price on one cam 40.00 to get some numbers.
This needs to be someone with a timing meter so it can be set the same before and after for the best accuracy.
Any takers.??
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91 f 350 cc 4x4, 3:55 gears. zf 5, 7.3 ATS 093 with bigger comp wheel, intercooled with cutdown 7,3 ps IC all gauges ignored with good aftermarket ones. Head studs, balanced . 12 psi 1k pyro under load way better mileage than the 460.

218/461 on the dyno. after 80k miles, wanted to make sure she was broke in.
sandeater1@gmail.com
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  #23  
Old 02-15-2010, 01:01 PM
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found a local shop that will give me 3 pulls for $25....I am in the process of taking care of several little things (injectors, pump, timing, and general maintenance), and then would like to basline it...there has been a noticable drop in pull over the last 5k miles.

once I get the baseline I want to start the build...I was seriously considering doing a dt360 swap (already bought the motor cuz the price was to good to pass on), but would really love to keep the 6.9 (what can I say, I am a loyalist). The goal is to do a full studded rebuild, use the cam and the 7.3 valves, custom compund turbo w/ic, and back it all with an es066-7 and GV (which are sitting here already)
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  #24  
Old 02-15-2010, 01:21 PM
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Quote:
Originally Posted by typefour View Post
Yes but it would kill the torque.

Ok just got off the phone with the cam shop. They dont have any hard data onthe IDI.But they have a customer that does the GM diesel with the same grind they have a 12% increase in torque and HP. And the boost and torque numbers come is 200rpm sooner.
this is on an engine dyno not a chassis so the gain will be less% on a rolling road.

He says if someone wants to do a before and after dyno test ,he will drop the price on one cam 40.00 to get some numbers.
This needs to be someone with a timing meter so it can be set the same before and after for the best accuracy.
Any takers.??
I'm game. I have the timing equipment, and Dynomite Diesel is just down the road for the before/after chasis dyno pulls.

My set up is far from stock, but would be a good example of what the cam could do for a factory IDI Turbo with all the typical mods.
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  #25  
Old 02-15-2010, 01:26 PM
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I have a supplier that has high quality stainless valves for 10.00 each, they do performance PS valves and just got into the IDI market.
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91 f 350 cc 4x4, 3:55 gears. zf 5, 7.3 ATS 093 with bigger comp wheel, intercooled with cutdown 7,3 ps IC all gauges ignored with good aftermarket ones. Head studs, balanced . 12 psi 1k pyro under load way better mileage than the 460.

218/461 on the dyno. after 80k miles, wanted to make sure she was broke in.
sandeater1@gmail.com
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  #26  
Old 02-15-2010, 01:28 PM
typefour typefour is offline
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Quote:
Originally Posted by axe_handle View Post
I'm game. I have the timing equipment, and Dynomite Diesel is just down the road for the before/after chasis dyno pulls.

My set up is far from stock, but would be a good example of what the cam could do for a factory IDI Turbo with all the typical mods.
Just let me know, I may eat some profit to make this happen more than once, I only make 10% over cost so it wont be much but every little bit helps.
And you may want to unhook the smoke eliminator.
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91 f 350 cc 4x4, 3:55 gears. zf 5, 7.3 ATS 093 with bigger comp wheel, intercooled with cutdown 7,3 ps IC all gauges ignored with good aftermarket ones. Head studs, balanced . 12 psi 1k pyro under load way better mileage than the 460.

218/461 on the dyno. after 80k miles, wanted to make sure she was broke in.
sandeater1@gmail.com
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  #27  
Old 02-15-2010, 01:41 PM
axe_handle axe_handle is offline
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Originally Posted by typefour View Post
Just let me know, I may eat some profit to make this happen more than once, I only make 10% over cost so it wont be much but every little bit helps.
And you may want to unhook the smoke eliminator.
LOL, yeah the smoke eliminator is set to control the low RPM EGT, not so much to pass emissions.

To maximize a different cam grind I would expect that the pump fuel curve would need to be adjusted, and tuning the smoke eliminator would be part of that.
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  #28  
Old 02-15-2010, 05:16 PM
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Has anybody noted a fuel mileage increase with one of these?
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  #29  
Old 02-15-2010, 05:31 PM
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Quote:
Originally Posted by caleb6.9 View Post
Has anybody noted a fuel mileage increase with one of these?
it should increase fuel mileage.when you have a custom grind that places your powerband down lower,this is a good thing in general for MPG.
its probably not much since its claimed to be just a couple hundred rpm lower.but yeah,it is in the right direction for fuel economy as well.
(i don't run one of these yet.tho i know the general aspect of how the "brain" [camshaft] of the engine works.)
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  #30  
Old 02-15-2010, 06:00 PM
caleb6.9 caleb6.9 is offline
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Well I was thinking that the big fuel mileage helper with it would be just the more effecient flow of air. Better flow of air in and more air makes for a much more efficient engine. Its looking like I am going to be buying one of these late spring to early summer. How hard would it be to install? Pull the turbo, intake manifold, valley pan and all of that to get to the lifters and then pull those. Also the pump and timing cover would come off, but you could take that off pretty easily as one piece right? And then the radiatior would probably need removed to give room to pull the cam out and the new in.
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Old 02-15-2010, 06:00 PM
 
 
 
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