Best way to max out a T4?
15-01-2012, 08:08 AM
#45
Sorry mate, Its done well up to now and its not shy'd away from producing good figures, the only downside to it is its actually restricting you from really testing that turbo and all your other bits - I would be tempted to start you 200 build soon
15-01-2012, 08:12 AM
#48
The compressor maps for a t4 and a gt3076 show that the g3076 should make much more power than the t4, it flows something like 6lb of air more on the compressor map.
But, due to the exhaust wheel they will make pretty well identical power to a t4 at the same boost, maybe 5-10 bhp more.
The exhaust wheel of a t4 is big, hence being slightly more laggy, where a gt30 has too small a ex wheel for the compressor wheel but gives good response.
Mat, I've no idea why any body would want to run that boost on a t4, rediculous IMO
Gareth, I wouldn't advise that comp ratio but have driven one at 7.2 and the word for it is raw, very un progressive, awesome feeling but in the real world not good
But, due to the exhaust wheel they will make pretty well identical power to a t4 at the same boost, maybe 5-10 bhp more.
The exhaust wheel of a t4 is big, hence being slightly more laggy, where a gt30 has too small a ex wheel for the compressor wheel but gives good response.
Mat, I've no idea why any body would want to run that boost on a t4, rediculous IMO
Gareth, I wouldn't advise that comp ratio but have driven one at 7.2 and the word for it is raw, very un progressive, awesome feeling but in the real world not good
Jim you'll be talking about the cr turbos gt30 there.
The gt30 thats on the garrett website is what Brammer has and I had.
It's smaller than cr turbos version with a 6 blade turbine wheel not 7.
I remember you dad saying that turbo (smaller version) spooled up quicker but the cr turbo version made more bhp.
15-01-2012, 08:14 AM
#49
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Looks great Luke, altho the interior was almost too good to strip - have you kept it? Have to say I prefer the weels you have on it too. Should be well north of 500 hp by the time you've finished matey, good work but I bet your wallet has been significantly lightened now!
Been saying it the last couple of years, but hopefully catch you at a show this year chap.
Been saying it the last couple of years, but hopefully catch you at a show this year chap.
15-01-2012, 08:28 AM
#51
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Looks great Luke, altho the interior was almost too good to strip - have you kept it? Have to say I prefer the weels you have on it too. Should be well north of 500 hp by the time you've finished matey, good work but I bet your wallet has been significantly lightened now!
Been saying it the last couple of years, but hopefully catch you at a show this year chap.
Been saying it the last couple of years, but hopefully catch you at a show this year chap.
I didn't keep the interior as it took up too much space
it's only resale value that will be affected and I'm not gong to sell up any time soon it is fookin noisy though Yes mate, I've still got your number so would be great to catch up and have a good old chinwag.. Will prObably be at central day although carless!
Last edited by bigluke200; 15-01-2012 at 09:34 AM.
15-01-2012, 09:17 AM
#56
Jim you'll be talking about the cr turbos gt30 there.
The gt30 thats on the garrett website is what Brammer has and I had.
It's smaller than cr turbos version with a 6 blade turbine wheel not 7.
I remember you dad saying that turbo (smaller version) spooled up quicker but the cr turbo version made more bhp.
The gt30 thats on the garrett website is what Brammer has and I had.
It's smaller than cr turbos version with a 6 blade turbine wheel not 7.
I remember you dad saying that turbo (smaller version) spooled up quicker but the cr turbo version made more bhp.
15-01-2012, 09:22 AM
#58
Thats it Justin, i have a 4inch anti surge, 6 fin compressor wheel with the .60 A/R housing - seems to be lot's of info on the net around the skyline forums regarding the difference between the 6 and 7 blade but it completely baffles the shite out of me - apparently the 6 is the newer version and better - loads of talk about GT3037 which i think is HKS spec (not 100% on that but..)
cr turbo's use the 7 blade with a .70 A/R compressor which is the same as a gt35. this has a 4" intake but not anti surge like ours.
15-01-2012, 11:10 AM
#60
i'll see what this turbo is like but if i want the new efr turbo everything is already done. i will only need my exhaust modding.
15-01-2012, 11:50 AM
#63
my t4 is maxed out only hit 28psi on the rollers and made .................................................. .................................................. ...........
wait for it
416.1 bhpthats with touring car spec head 7.2.1 c/r and 16/14 cams
wait for it
416.1 bhp
thats with touring car spec head 7.2.1 c/r and 16/14 cams
15-01-2012, 12:17 PM
#66
cossie fan (unluckerly)
15-01-2012, 01:15 PM
#71
cossie fan (unluckerly)
15-01-2012, 08:13 PM
#77
Professional Waffler
are you cams dialed in,, and get it remapped
15-01-2012, 08:30 PM
#79
Yes Steve correct a set up.
That doesn't include dialling cams in.
We checked the base calibrations and ensured the car was safe for hard use, which it was,
When the car was mapped some years ago it was peaking at 2.2 bar holding 2 bar to the limiter,
Carry on trying to stir shit all you like pal, I expect nothing more from you these days tbh!
If Doug wants us to up the boost and find every ounce of power he has available all he needs to fo is ask and we will do so.
If you study the rolling road day you will see some of our off the shelf calibrations did quite well, and looking at the maps side by side dougs has more ign and more fuel but makes less power lol that's dyno bollocks for you
That doesn't include dialling cams in.
We checked the base calibrations and ensured the car was safe for hard use, which it was,
When the car was mapped some years ago it was peaking at 2.2 bar holding 2 bar to the limiter,
Carry on trying to stir shit all you like pal, I expect nothing more from you these days tbh!
If Doug wants us to up the boost and find every ounce of power he has available all he needs to fo is ask and we will do so.
If you study the rolling road day you will see some of our off the shelf calibrations did quite well, and looking at the maps side by side dougs has more ign and more fuel but makes less power lol that's dyno bollocks for you
15-01-2012, 08:33 PM
#80
Professional Waffler
if those are the facts,, and he hasnt got any other issues (like his front pulley key has warn) than its either cam timing,, or dyno shit