SupraHuman Posted August 15, 2009 Share Posted August 15, 2009 What is the difference between the two trims when it comes to the turbo? Is it the shape of the housing,the size of the impeller etc? I am about to get my new tubby from Comp Turbo ordered and there are just WAY to many options there,don't want to get it wrong. Thanks in advance Link to comment Share on other sites More sharing options...
Kirk Posted August 15, 2009 Share Posted August 15, 2009 Im pretty sure its to with turbine and housing design. With the housing its just to do with the angle of the outlet to the intercooler piping.. i.e Q trim angles out so you can fit intercooler piping like stock (through the inner wing) P trim angles straight down for a short run to the intercooler but usualy have to modify the waterneck to suit the fitment.. 'waits to be corrected' Link to comment Share on other sites More sharing options...
jevansio Posted August 15, 2009 Share Posted August 15, 2009 Something not quite right in that explanation as turbine housing design & outlet to intercooler contradict each other, ones hot side, others cold side. From a Precision document they describe the 2 as: P = P Trim, Quick spool with sacrafice of some top end boost Q = Q Trim, Normal spool with more top end boost Link to comment Share on other sites More sharing options...
Kirk Posted August 15, 2009 Share Posted August 15, 2009 well i tried im sure somewhere i read there was a difference in turbine wheel (hot side) aswel as the housing Link to comment Share on other sites More sharing options...
jevansio Posted August 15, 2009 Share Posted August 15, 2009 well i tried im sure somewhere i read there was a difference in turbine wheel (hot side) aswel as the housing With the compressor covers, these are Precisions definitions: B = B Cover Compressor Housing 2.625" inlet, 1.75" outlet E = E Cover Compressor Housing 3" inlet 2" outlet H = H Cover Compressor Housing 4" inlet 3" outlet HB = H Cover Compressor Housing 4" inlet 3" outlet with a bellmouth Link to comment Share on other sites More sharing options...
Kirk Posted August 15, 2009 Share Posted August 15, 2009 so going off that then its all about inlet and outlet sizes? Link to comment Share on other sites More sharing options...
Terminator Posted August 15, 2009 Share Posted August 15, 2009 X trim. Link to comment Share on other sites More sharing options...
SupraHuman Posted August 15, 2009 Author Share Posted August 15, 2009 X trim. Do you mean to say X trim is the right option for Supras Phil? Comp Turbo list their options as MX and SX. http://www.compturbo.com/products/index.php?folder1=Turbo_Chargers&folder2=CT43&product=CT4374 Link to comment Share on other sites More sharing options...
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