Jetman
Junior Member
Joined: August 2022
Posts: 69
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Post by Jetman on Dec 31, 2022 19:18:46 GMT -5
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Post by racket on Dec 31, 2022 20:06:36 GMT -5
Nope , the turbine scroll is only 0.63 A/R , thats the smallest size , you need the 1.06 A/R housing for it to perform
Cheers
John
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Jetman
Junior Member
Joined: August 2022
Posts: 69
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Post by Jetman on Dec 31, 2022 20:22:25 GMT -5
Hello, what do you mean by perform? Will it run but have no power? What is the A/R?? Thanks!
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Post by racket on Dec 31, 2022 20:37:53 GMT -5
You'll be able to get it to "run" with this small turb scroll A/R but it'll be right up against the surge line even without a jet nozzle on her , as soon as you try fitting a nozzle the temps will rise and you'll most likely have problems .
A/R is the Area of the scroll throat divided by "R" , the distance from the centre of the throat to the shaft centre ( the radius "R" ) , it controls the quantity of gases that can pass through the turbine , the 0.63 has a Corrected flow of ~22 lbs/min whereas the 1.06 has ~33 lbs/min
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Jetman
Junior Member
Joined: August 2022
Posts: 69
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Post by Jetman on Dec 31, 2022 20:51:03 GMT -5
Hello, I appreciate your help, I am just wondering if there is a lower gas flow rate, wouldn’t the combustion chamber have a higher pressure resulting in better fuel efficiency? Or would it struggle to reach higher rpm? Once again I greatly appreciate your help!
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Post by racket on Dec 31, 2022 20:58:15 GMT -5
LOL.....................this is a very complicated question , to keep it simple , I'll say no .
Radial comps perform best over a limited flow range, once outside that range the efficiency drops and we need more heat to compensate .
Don't use that turbo .
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Jetman
Junior Member
Joined: August 2022
Posts: 69
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Post by Jetman on Dec 31, 2022 21:10:37 GMT -5
What turbo would you recommend that is easy to find? I am in Manitoba Canada…
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Post by racket on Dec 31, 2022 21:40:45 GMT -5
Try and find one that has a larger turbine stage than compressor , this turbo has a 61 mm comp inducer and a 62 mm turb exducer , it really needs a turb exducer of ~67 mm so that the hole out is 20% greater in area than the hole in , diesel engine turbos are generally a better proposition .
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dieselguy86
Veteran Member
Joined: September 2014
Posts: 186 
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Post by dieselguy86 on Jan 2, 2023 9:44:24 GMT -5
Look for a h1c/hx35 off a dodge ram pickup with the cummins or hx40 off an 8.3 cummins. There's alot of them out there usually only for a couple hundred bucks. You'll have to pay some attention, holset does there housings different, they list only the area of the housing so you'll see things 9cm, 12cm housing etc. Id get the 12cm, for $300 you can buy a brand new 14cm housing which would work better.
The only downside to these turbos is they use a divided housing, which is more flow restrictive than the same housing that is undivided.
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