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Bob C IL 
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Joined: 25 Sep 2009
Location: Paris IL
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 Topic: Ex housings
Posted: 08 Aug 2013 at 8:26am |
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Couple of us amateur pullers was talking about turbo ex. Housing sizes.. I have a 241, 231 and 193 in the shop but the next guy has a 90. 80. And a 70 . Can sum body clear up this question. ( 30 pack later we still had no clue)
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Dipstick In
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Posted: 08 Aug 2013 at 9:48am |
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Maybe a 40 pack would help!
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You don't really have to be smart if you know who is!
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Bob C IL
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Posted: 08 Aug 2013 at 10:01am |
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After the 30 we didn't care about turbos either!!!!!!
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ACFarmer
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Posted: 08 Aug 2013 at 10:04am |
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The .90, 1.0 style configuration is what we usually use for exhaust housing sizes.
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Making a living farming with and working on Allis Equipment
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Bob C IL
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Posted: 08 Aug 2013 at 12:29pm |
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Yes understand..... But what do the numbers represent...
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wi50
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Posted: 08 Aug 2013 at 12:45pm |
Size of the housing, a larger housing flows more air, drives the wheel a little less. If i'm over speeding the top chargers I need larger housings, if they won't turn on and spool quick enough, smaller housings. Each housing will be for a certain wheel family like Holsets use a E F G trim wheel.
So a G trim wheel in a 41 housing is driven harder than in a 47 housing. Different manufacturers have different numbering systems
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"see what happens when you have no practical experience doing something...... you end up playing with calculators and looking stupid on the internet"
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rowcropmafia
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Posted: 08 Aug 2013 at 12:54pm |
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Coming to rossville ttomorrow night Bob?
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O.P.S. Heads
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Posted: 08 Aug 2013 at 7:08pm |
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Bob,
I think what you are asking is how do different numbering systems between different turbo manufactures compare right? Like is a .90 A/R like Garrett or Borg Warner comparable to a .241,.231,.193. like Switzer used. Or what's tighter, a .231 or a .90 A/R. I have a comparison chart for Holset's (who use a number of centimeters) that compares with the area over radius ration we are most accustomed to. I will find it and post it later this evening - that is, if that is the info you are looking for.
Edited by O.P.S. Heads - 08 Aug 2013 at 7:08pm
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rowcropmafia
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Posted: 08 Aug 2013 at 7:24pm |
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I think thats what he's looking for. I have been trying to figure this out myself
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Larry W.
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Posted: 08 Aug 2013 at 7:30pm |
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Mike, if you find that chart I would also appreciate if you would post it.
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injpumpEd
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Posted: 08 Aug 2013 at 9:06pm |
 Bob C IL wrote:
Couple of us amateur pullers was talking about turbo ex. Housing sizes.. I have a 241, 231 and 193 in the shop but the next guy has a 90. 80. And a 70 . Can sum body clear up this question. ( 30 pack later we still had no clue) |
Jeez Bob! A 30 pack by 8:30 in the morning? lol! These guys are right. They are completely different numbering systems from manufacturers. I don't know if the 241/231 3LM housings just refer to a part #, or if they represent a measurement.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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O.P.S. Heads
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Posted: 08 Aug 2013 at 9:21pm |
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OK I got this off of the internet and we all know we can't believe everything we read from the internet. But is seems pretty close. Now this is Holset vs. any brand that uses the A/R sizing method. can't really help you too much Bob on the Switzer numbering system.
Turbine housing CM – A/R
8 cm2 = 0.57 A/R
9 cm2 = 0.65 A/R
10 cm2 = 0.73 A/R
11 cm2 = 0.81 A/R
12 cm2 = 0.89 A/R
14 cm2 = 0.97 A/R
15 cm2 = 1.05 A/R
16 cm2 = 1.13 A/R
17 cm2 = 1.29 A/R
19 cm2 = 1.37 A/R
Now, something to consider that I don't fully understand would be if a housings I.D's are machined larger to accept a bigger wheel than said housing was designed to accept. The A/R will not change, but in my mind it would drive the turbo harder..... wouldn't it?
Edited by O.P.S. Heads - 08 Aug 2013 at 9:24pm
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Bob C IL
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Posted: 09 Aug 2013 at 10:10am |
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So there is no same numbers on housings , each manufacture has there own.. Well that's what we couldn't figure out. That cleared that one up... Thanks a bunch guys. Mike I printed your chart any info like that is gold to a puller.....
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