JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 7m 20d Gender: Male Location: Adelaide Posted 25/02/17 11:40 AM Share Posted 25/02/17 11:40 AM Yeh remove the turbo and do it on the bench but mark the correct rotation first so the 0.7 cover lines up bang on 1 Link to comment Share on other sites More sharing options...
MattyP MattyP Cruise Control 6,317 Member For: 12y 8m 16d Gender: Male Location: Central Coast Posted 25/02/17 11:46 AM Share Posted 25/02/17 11:46 AM But Aaron.... im SOOOOO Lazzzyyyyyyyyyyy Link to comment Share on other sites More sharing options...
Puffwagon Trust me bro... Gold Donating Members 16,061 Member For: 9y 11m 22d Gender: Male Location: South Australia Posted 25/02/17 12:01 PM Share Posted 25/02/17 12:01 PM (edited) Don't do it then. It's not worth doing it just for noise. You'll add spool time plus pay for a retune. Lots of time and money for fark all. Just yell "fish" when you floor it if it is the spool noise you're after. Edited 25/02/17 12:06 PM by Puffwagon Cos why not Link to comment Share on other sites More sharing options...
MattyP MattyP Cruise Control 6,317 Member For: 12y 8m 16d Gender: Male Location: Central Coast Posted 25/02/17 12:21 PM Share Posted 25/02/17 12:21 PM I thought covers dont make a significant difference to the map? Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 7m 20d Gender: Male Location: Adelaide Posted 25/02/17 12:30 PM Share Posted 25/02/17 12:30 PM LOLWUT 1 Link to comment Share on other sites More sharing options...
MattyP MattyP Cruise Control 6,317 Member For: 12y 8m 16d Gender: Male Location: Central Coast Posted 25/02/17 12:33 PM Share Posted 25/02/17 12:33 PM I remember reading something on the garrett website that changing the compressor cover doesnt significantly Affect much. Compressor A/R - Compressor performance is comparatively insensitive to changes in A/R. Larger A/R housings are sometimes used to optimize performance of low boost applications, and smaller A/R are used for high boost applications. However, as this influence of A/R on compressor performance is minor, there are not A/R options available for compressor housings. Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 2m 24d Gender: Male Location: Perth Posted 25/02/17 12:38 PM Share Posted 25/02/17 12:38 PM You recon this turbo is OK? Link to comment Share on other sites More sharing options...
Puffwagon Trust me bro... Gold Donating Members 16,061 Member For: 9y 11m 22d Gender: Male Location: South Australia Posted 25/02/17 12:42 PM Share Posted 25/02/17 12:42 PM I found some results somewhere on the net ages ago and it was fark all difference but different none the less. Iirc it was 200rpm spool and almost no top end. I can't really remember the whole amount of testing done. That garrett quote contradicts itself anyway as we know there are a couple of compressor a/r options with the gt35r as well as many different ported and non ported housing types that affect spool up. Link to comment Share on other sites More sharing options...
Puffwagon Trust me bro... Gold Donating Members 16,061 Member For: 9y 11m 22d Gender: Male Location: South Australia Posted 25/02/17 12:55 PM Share Posted 25/02/17 12:55 PM The guy who put a gtx wheel into a .7 housing for me said that the wheel would be choked by the smaller housing. Obviously all compressors can be pushed to the choke line with a big enough turbine but in saying that I haven't plotted what the various combinations will do on a Barra. @JETURBO would you care to add to this? I'd just yell fish myself but then again I'm a slack arse these days. Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 7m 20d Gender: Male Location: Adelaide Posted 25/02/17 12:55 PM Share Posted 25/02/17 12:55 PM I can tell you right now there's a significant difference in airflow on nearly any compressor cover on our 4.0 DOHC platform and Antisurge style covers are actually transforming an airflow differential vs a std cover so it kind of points out an obvious change in characteristics no ? just sayn get it checked and see the difference it can play and share the information you gather Link to comment Share on other sites More sharing options...
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