2.1 or 2.5
Please
10 October 2010, 01:03 AM
#94
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13 October 2010, 05:32 AM
#96
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May be a stupid question, but if you had for example a GT35R, one with .63 housing and one with .82 housing.....what difference does the housings make?
13 October 2010, 01:32 PM
#98
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mine is a GT3076 hybrid, with a 0.82 housing it was a 550 bhp turbo suitable for a 2.5.
On mine it spooled at 5800 rpm...
Now have a 0.62 housing on thanks to Andy @ AET-Turbos and it spools at 4000 rpm now.
So a large A/R ratio is good for a large displacement motor, a smaller housing is better for a small displacement motor. BUT the smaller housing will restrict the maximum flow ( = power ) at the top end.
All IMHO.
dunx
13 October 2010, 03:21 PM
#99
Drives relatively lag free, but then I have rotated the inlet and shortened the FMIC pipe-work. Not sure how much difference this actually makes but I have it done mainly for aesthetic reason.
No idea on actual power but estimated in the region of 450/450 with the turbo running out of blow. T is a big limiting factor with the heads and bottom end capable of so much more. The good news is that I can do a turbo change to a V or maybe go rotated and should easily cope.
However, I have no plans to do this at the moment as she is a beastie on the road... maybe Im just not man enough....
13 October 2010, 05:34 PM
#100
I have a 2.35 using a ej22t cdb and forged internals. Heads have Supertech valves & retainers, bronze valve guide and Prodrive rally cams. Lots of other supporting mods too but the turbo is a AFP MD32T1T. This is all in a V4 STi Type R.
Drives relatively lag free, but then I have rotated the inlet and shortened the FMIC pipe-work. Not sure how much difference this actually makes but I have it done mainly for aesthetic reason.
No idea on actual power but estimated in the region of 450/450 with the turbo running out of blow. T is a big limiting factor with the heads and bottom end capable of so much more. The good news is that I can do a turbo change to a V or maybe go rotated and should easily cope.
However, I have no plans to do this at the moment as she is a beastie on the road... maybe Im just not man enough....
Drives relatively lag free, but then I have rotated the inlet and shortened the FMIC pipe-work. Not sure how much difference this actually makes but I have it done mainly for aesthetic reason.
No idea on actual power but estimated in the region of 450/450 with the turbo running out of blow. T is a big limiting factor with the heads and bottom end capable of so much more. The good news is that I can do a turbo change to a V or maybe go rotated and should easily cope.
However, I have no plans to do this at the moment as she is a beastie on the road... maybe Im just not man enough....
Would standard sti v4 heads that i have on my original engine be capable of that power?
13 October 2010, 08:34 PM
#104
v4 STi heads, cams, valves etc are all well capable at 450+. To be honest, I'm not really making use of them running just the T. But I took the old 'whilst they're off' approach with the potential to just upgrade the turbo later on.
13 October 2010, 10:15 PM
#105
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Hi Chris,
mine is a GT3076 hybrid, with a 0.82 housing it was a 550 bhp turbo suitable for a 2.5.
On mine it spooled at 5800 rpm...
Now have a 0.62 housing on thanks to Andy @ AET-Turbos and it spools at 4000 rpm now.
So a large A/R ratio is good for a large displacement motor, a smaller housing is better for a small displacement motor. BUT the smaller housing will restrict the maximum flow ( = power ) at the top end.
All IMHO.
dunx
mine is a GT3076 hybrid, with a 0.82 housing it was a 550 bhp turbo suitable for a 2.5.
On mine it spooled at 5800 rpm...
Now have a 0.62 housing on thanks to Andy @ AET-Turbos and it spools at 4000 rpm now.
So a large A/R ratio is good for a large displacement motor, a smaller housing is better for a small displacement motor. BUT the smaller housing will restrict the maximum flow ( = power ) at the top end.
All IMHO.
dunx
So maybe for a 2.1 a 0.62 housing would be better suited?
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