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 10023 Posts Member #: 1456 Mongo Barnsley, South Flatcapshire |
20th Feb, 2013 at 03:12:49pm
Ok then. My clubby has a .25 A/R exhaust housing on the turbo, if I wanted to could I just change this housing for a .36 A/R item or does the turbine wheel need changing at the same time? If something is worth doing, it's worth doing half of. |
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 2054 Posts Member #: 452 Post Whore Chester, UK |
20th Feb, 2013 at 03:19:21pm
in principle yes, but you need to make sure the turbine wheels are the same size as this is important.
Edited by t@z on 20th Feb, 2013. |
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10023 Posts Member #: 1456 Mongo Barnsley, South Flatcapshire |
20th Feb, 2013 at 03:26:17pm
Looks like you can just change them as long as the .25 & .36 are using standard wheels and not ST2 wheels. If something is worth doing, it's worth doing half of. |
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 2057 Posts Member #: 9252 Post Whore Cleethorpes |
20th Feb, 2013 at 04:00:37pm
is there much difference in performance between the two im using the .36 Done now needs redoing lol |
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2054 Posts Member #: 452 Post Whore Chester, UK |
20th Feb, 2013 at 04:11:05pm
from the G themselves
Turbine A/R - Turbine performance is greatly affected by changing the A/R of the housing, as it is used to adjust the flow capacity of the turbine. Using a smaller A/R will increase the exhaust gas velocity into the turbine wheel. This provides increased turbine power at lower engine speeds, resulting in a quicker boost rise. However, a small A/R also causes the flow to enter the wheel more tangentially, which reduces the ultimate flow capacity of the turbine wheel. This will tend to increase exhaust backpressure and hence reduce the engine's ability to "breathe" effectively at high RPM, adversely affecting peak engine power.
Conversely, using a larger A/R will lower exhaust gas velocity, and delay boost rise. The flow in a larger A/R housing enters the wheel in a more radial fashion, increasing the wheel's effective flow capacity, resulting in lower backpressure and better power at higher engine speeds. |
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2096 Posts Member #: 1111 Post Whore s wales |
20th Feb, 2013 at 04:22:38pm
I have just finished building a t3 hybrid for my new engine. It is based upon the s1 escort turbo. This comes with the .36 exhaust turbine housing. Also it comes with the larger trim compressor wheel (45 trim instead of the stock metro turbo 40 trim). I have rebuilt this with new bearings, 360 trust, benross worked exhaust manifold, turbo phil elbow with wastegate modded to match the elbow. I do have a couple of spare .36 exaust turbine housings but they are cracked around the wastegate hole. Saying that i looked on the ford forums and the consensus is that they nearly all crack and would still be usable (any boost leakage would be negligable). As for performance im unsure how it will be . Basic engine spec is worked head, 1380, 8.1 cr and phase 2 cam. Will have it in and running before summer i hope... |
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2057 Posts Member #: 9252 Post Whore Cleethorpes |
20th Feb, 2013 at 04:23:30pm
cheers t@z Done now needs redoing lol |
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2096 Posts Member #: 1111 Post Whore s wales |
20th Feb, 2013 at 04:24:10pm
The .36 should be a direct swap for the ..25 on the metro t3 |
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10023 Posts Member #: 1456 Mongo Barnsley, South Flatcapshire |
20th Feb, 2013 at 05:06:07pm
Fancy selling me a .36 housing? If something is worth doing, it's worth doing half of. |
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2057 Posts Member #: 9252 Post Whore Cleethorpes |
20th Feb, 2013 at 05:14:39pm
il check what my other t3 is using if you want john Done now needs redoing lol |
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10023 Posts Member #: 1456 Mongo Barnsley, South Flatcapshire |
20th Feb, 2013 at 05:15:57pm
Please Curt. If something is worth doing, it's worth doing half of. |
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2057 Posts Member #: 9252 Post Whore Cleethorpes |
20th Feb, 2013 at 05:16:58pm
2 mins just nip to shed Done now needs redoing lol |
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2057 Posts Member #: 9252 Post Whore Cleethorpes |
20th Feb, 2013 at 05:22:52pm
where does it say? im sure i read it on the turbo im using but cant find it on my spare Done now needs redoing lol |
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2057 Posts Member #: 9252 Post Whore Cleethorpes |
20th Feb, 2013 at 05:27:50pm
found it but its a .46 i believe Done now needs redoing lol |
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10023 Posts Member #: 1456 Mongo Barnsley, South Flatcapshire |
20th Feb, 2013 at 05:28:40pm
.46! what is that for?
If something is worth doing, it's worth doing half of. |
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2057 Posts Member #: 9252 Post Whore Cleethorpes |
20th Feb, 2013 at 05:30:53pm
it says .46 a/r i duno its a t3 i got from the bay of e Edited by wng691s clubby on 20th Feb, 2013. Done now needs redoing lol |
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 1745 Posts Member #: 375 Post Whore Leicestershire |
20th Feb, 2013 at 06:30:13pm
The rs turbo .36 exhaust with the 45trim wheel is a good unit. They don't feel any more laggy but gives a nice kick when on boost. .48 housing is cosworth size. I've used one absolutely awesome when rolling but abit on the large size for standing starts.
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2096 Posts Member #: 1111 Post Whore s wales |
20th Feb, 2013 at 06:37:43pm
nice one ron, sounds good. did quite a bit or reasearch on it so hope that it pays off. with a large bore motor it should give good results. i will post up my results once i get it up and running and have some rolling road data |
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2096 Posts Member #: 1111 Post Whore s wales |
20th Feb, 2013 at 06:38:00pm
nice one ron, sounds good. did quite a bit or reasearch on it so hope that it pays off. with a large bore motor it should give good results. i will post up my results once i get it up and running and have some rolling road data |
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