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17a adding a turbo

17a adding a turbo

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cat_d7_17a
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I was thinking about adding a turbo to a old 17a. I'm going to make my own manifold, but am needing to know what model or kind of turbo I need to use. Could a turbo off a cat 3406 work since it's similar in displacement or even a 3306 turbo? How about the specs for a turbo 17a fuel rack?
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Tue, Feb 11, 2014 10:06 AM
Old Magnet
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Try for a match to the original 17A turbo.
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Tue, Feb 11, 2014 1:41 PM
catsilver
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Reply to Old Magnet:
Try for a match to the original 17A turbo.
Don't forget you might need piston cooling jets, a larger oil pump and different injectors as well. Worth checking up before you melt any pistons.
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Tue, Feb 11, 2014 5:58 PM
cat_d7_17a
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Reply to catsilver:
Don't forget you might need piston cooling jets, a larger oil pump and different injectors as well. Worth checking up before you melt any pistons.
Thanks, It looks like I need a 8m4540 turbo from your spec sheet. I couldn't find any info on what size I needed. Where would I go about finding the differences between a turboed 17a and mine? Did late model 17a's have cooling jets and bigger injectors?
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Tue, Feb 11, 2014 10:35 PM
Old Magnet
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Reply to cat_d7_17a:
Thanks, It looks like I need a 8m4540 turbo from your spec sheet. I couldn't find any info on what size I needed. Where would I go about finding the differences between a turboed 17a and mine? Did late model 17a's have cooling jets and bigger injectors?
Get yourself a set of parts books covering 17A1-17A11878 and 17A11879-17A19442 and compare parts.

A turbo was an attachment for the 17A1-11878.
Turbo was standard for 17A11879-up.
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Wed, Feb 12, 2014 12:23 AM
cat_d7_17a
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Reply to Old Magnet:
Get yourself a set of parts books covering 17A1-17A11878 and 17A11879-17A19442 and compare parts.

A turbo was an attachment for the 17A1-11878.
Turbo was standard for 17A11879-up.
Turns out the serial number on the engine is 17A18824 series D, and the previous owner took the turbo off when it went out. So it should be ready for a turbo again. Are there any used turbos out there?
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Thu, Feb 13, 2014 3:44 AM
Old Magnet
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Reply to cat_d7_17a:
Turns out the serial number on the engine is 17A18824 series D, and the previous owner took the turbo off when it went out. So it should be ready for a turbo again. Are there any used turbos out there?
17A18824 uses turbo group 4M4245 = 8M4540 = 7M7053
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Thu, Feb 13, 2014 5:20 AM
cat_d7_17a
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Reply to Old Magnet:
17A18824 uses turbo group 4M4245 = 8M4540 = 7M7053
Everyone I talk to says those model turbos are discontinued and they only sell parts for my core, which I don't have one. I talked to a shop that found one used, but it was beyond repair he said. What turbo does a 7E use?
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Fri, Feb 14, 2014 10:05 AM
Old Magnet
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Reply to cat_d7_17a:
Everyone I talk to says those model turbos are discontinued and they only sell parts for my core, which I don't have one. I talked to a shop that found one used, but it was beyond repair he said. What turbo does a 7E use?
D7E units are 3S4258 = 3S3513 = 2S3105 = 8M2679
also
4S9706 = 3S9534
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Sat, Feb 15, 2014 12:37 AM
cat_d7_17a
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Reply to Old Magnet:
D7E units are 3S4258 = 3S3513 = 2S3105 = 8M2679
also
4S9706 = 3S9534
I have called and called trying to find a turbo with no luck. Would it hurt to use a D339 D7E turbo instead? The only difference is 20 more horsepower and 100 more rpm isn't it? I photo-tached my 17a on the drive shaft with the clutch engaged and in neutral and it read 1360rpm with no load. In theory the 160hp d7e turbo should be running the same boost and airflow as a 17a with the same cubic inches and rpm right? I don't want to melt anything since it only has 200 hours on new sleeves and pistons and heads. Any input would really be appreciated.
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Wed, Apr 30, 2014 8:01 AM
neil
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Reply to cat_d7_17a:
I have called and called trying to find a turbo with no luck. Would it hurt to use a D339 D7E turbo instead? The only difference is 20 more horsepower and 100 more rpm isn't it? I photo-tached my 17a on the drive shaft with the clutch engaged and in neutral and it read 1360rpm with no load. In theory the 160hp d7e turbo should be running the same boost and airflow as a 17a with the same cubic inches and rpm right? I don't want to melt anything since it only has 200 hours on new sleeves and pistons and heads. Any input would really be appreciated.
You won't melt anything particularly if you find a similarly mapped alternate turbo. You need to determine what the map for the old turbo is/was. Once you've done that, it's pretty easy to go online and find a turbo with a similar map. From that, it's just a matter of making sure you can bolt it up and plumb it. I added a turbo to my lawnmower (JD430) and basically just made up a transition piece from the original exhaust manifold flange to the turbine flange. The impeller end was easier because it was just flexible pipes but if you need a flange on that side too, just use the same approach.
Plumb the oil feed back in and hook up an oil drain back to the original drain inlet to the oil pan or lower block. Make sure the oil drain is at least the same diameter as the outlet hole on the turbo and you'll be good to go.

Put this "https://www.google.com/search?client=safari&rls=en&q=turbocharger+maps+explained&ie=UTF-8&oe=UTF-8" into your browser and you'll see a bunch of links explaining it.
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Wed, Apr 30, 2014 9:17 AM
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