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Old 01-26-2016, 10:31 PM   #1
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Geared starter motor (Denso?) for ISC-350

My starter is due for a PM disassembly, inspection, and rebuild after nearly 140K miles. Instead, I'd like to replace it with one of the geared aftermarket starters, such as Denso. The distributors I've contacted do not instill much confidence in their technical expertise. The Denso website seems aimed at distributors, not end users, and contains scant technical info.

I have a 2000 Dynasty with ISC-350. Best I can tell, the correct Denso P/N would be 228000-5311.

I would assume anyone installing this starter (rather than rebuilding their existing starter) would do so for one reason--to obtain a higher cranking speed. But I do have a few questions. Most important is "Does this starter TRULY increase cranking speed?" If it indeed increases cranking speed, it appears (according to scant specs) to do so with a 4KW starter--less than 350 amps. I've not checked it personally, but I suspect the OE starter draws north of at least twice that current.

Also, what is the difference between "wet clutch" and "dry clutch" on these Denso starters?

I would surely appreciate hearing from anyone with EXPERIENCE in using these aftermarket starters.

Please, no PAP posts.
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Old 01-27-2016, 06:48 AM   #2
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I'm getting my Deson starter installed this coming Monday at a Cummings certified dealer, I will ask them your questions and get back with you.


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Old 01-27-2016, 07:29 AM   #3
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Quote:
Originally Posted by Vanwill View Post
My starter is due for a PM disassembly, inspection, and rebuild after nearly 140K miles. Instead, I'd like to replace it with one of the geared aftermarket starters, such as Denso. The distributors I've contacted do not instill much confidence in their technical expertise. The Denso website seems aimed at distributors, not end users, and contains scant technical info.

I have a 2000 Dynasty with ISC-350. Best I can tell, the correct Denso P/N would be 228000-5311.

I would assume anyone installing this starter (rather than rebuilding their existing starter) would do so for one reason--to obtain a higher cranking speed. But I do have a few questions. Most important is "Does this starter TRULY increase cranking speed?" If it indeed increases cranking speed, it appears (according to scant specs) to do so with a 4KW starter--less than 350 amps. I've not checked it personally, but I suspect the OE starter draws north of at least twice that current.

Also, what is the difference between "wet clutch" and "dry clutch" on these Denso starters?

I would surely appreciate hearing from anyone with EXPERIENCE in using these aftermarket starters.

Please, no PAP posts.
Denso is perhaps The most reliable starter out there. It has a 4:1 gear reduction that requires less torque and less amp draw to spin an Engine over for easy starting.
The Wet Clutch design has seals and mounting gasket for Oil bathed wet clutches such as Fork Trucks and other industrial applications.
A Good choice for your Delco Remy replacement.
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Old 01-27-2016, 12:26 PM   #4
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I'm getting my Deson starter installed this coming Monday at a Cummings certified dealer, I will ask them your questions and get back with you.


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Asheville, I'm eagerly awaiting your report, even though you have a different engine than mine. Thanks for your reply. I like the Asheville, NC area. We are from the Pinehurst, NC area.
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Old 01-27-2016, 12:29 PM   #5
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Denso is perhaps The most reliable starter out there. It has a 4:1 gear reduction that requires less torque and less amp draw to spin an Engine over for easy starting.
The Wet Clutch design has seals and mounting gasket for Oil bathed wet clutches such as Fork Trucks and other industrial applications.
A Good choice for your Delco Remy replacement.
Thanks, Chuck. I had been unable to get an answer on the "wet clutch" issue. Apparently, I will not need that. I'm almost certain I'll purchase one of these. Just want to be sure of what I'm getting.

I find the Denso being able to spin the engine faster, on considerably less current is very impressive. I hope I take the time to measure my starting current on the old starter before removing it.
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Old 01-27-2016, 04:06 PM   #6
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I Played with Denso Starters back in the early 90's and today My Starter Fires every Car in the Indy 500 .
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Old 01-27-2016, 04:21 PM   #7
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We had an ISC 350 (with Banks kit) for 13 years and I never felt the need for anything else.
The ISX we have now is a different thing though! Even with 4 new 925 CCA batteries it's sometimes hard to turn over fast enough
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Old 01-27-2016, 06:53 PM   #8
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We had an ISC 350 (with Banks kit) for 13 years and I never felt the need for anything else.
The ISX we have now is a different thing though! Even with 4 new 925 CCA batteries it's sometimes hard to turn over fast enough
To clarify, I have had NO starting issues with my ISC, even in very cold weather. However, it turns over so slowly that I have always held my breath when I turn the key. My engine DOES have the grid heater, and I HAVE verified that in cold weather, if I do not wait for the "Wait To Start" light to go out, it rolls over much longer before starting.

Had I not learned about the Denso starter (or other gear reduction starters), I would have merrily overhauled my existing starter in anticipation of my upcoming Alaska trip. But any gearhead has to be intrigued by a starter design that draws much less current, while spinning over the engine faster, costs less than an OEM replacement, and weighs much less.

Mike Canter -- I have always respected your input (if not your current choice of domicile--LOL). I'm not sure I understood you correctly. Do you have one of these starters on your DD? Can you offer any specs about how much faster the Denso starters spin an engine? I'm still amazed that they could spin an ISC as fast as the OEM starter on a fraction of the current.
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Old 01-27-2016, 07:11 PM   #9
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Your Batteries are dragging your Starter ! I'd check them .


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Old 01-27-2016, 08:05 PM   #10
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Van will see if this helps on your application. If not there is a phone number to call that is listed

http://www.dieselusa.com/productinfo...on%20Guide.pdf

Also this
Medium & Heavy Duty Starters | DENSO Heavy Duty
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Old 01-27-2016, 08:14 PM   #11
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Your Batteries are dragging your Starter ! I'd check them .


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That went over my head. Can you expound please?

Inquiring minds want to know. There are a bunch of us geeks on here and if we can get one more hp or lb of torque we will jump on board.
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Old 01-27-2016, 10:48 PM   #12
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Your Batteries are dragging your Starter ! I'd check them .


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My ONE 8D battery is nearly new, and cables/connections are excellent. I don't mean the engine barely turns over...just that it does not turn over as fast as I THINK a compression-ignition engine probably should, to provide reliable starting. With diesel engines, the temperature reached at TDC is almost entirely dependent on cranking RPM...it's just physics.

Perhaps I am wrong about this. But since I'm planning PM on the OEM starter, I'm thinking the Denso changeover is a better idea. Brushes and a solenoid for the OEM starter are probably over half the cost of the Denso.
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Old 01-27-2016, 10:53 PM   #13
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That went over my head. Can you expound please?

Inquiring minds want to know. There are a bunch of us geeks on here and if we can get one more hp or lb of torque we will jump on board.
X2--"geek" Van. Hey, it's a HOBBY, not a way to save money! LOL I've lost count of the number of good folks who have asked me, "Is owning a MH a good way to travel cheaply?" I'm sure YOUR answer was the same as mine--"Not by a jug-full!" If you want to save money while traveling, buy an SUV you can sleep in at rest stops and shower at Motel 6. LOL

Thanks for everyone's helpful replies.
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Old 01-28-2016, 04:18 AM   #14
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This summer I replaced the starter on my isx600 with the Denso and it's the best improvement I've ever made to my coach. The 6 years I've owned this coach, I have always had problems with coach not cranking. Replaced batteries twice and last year added third chassis battery but problem continued. After installing Denso, it turns over fast and cranks EVERY time.
By the way, I also love Asheville area, I live in Denver, NC.
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