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Small turbos 

 

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 Post subject: Small turbos
Posted: Fri May 26, 2006 8:54 pm 
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whats the smallest turbo you have seen on an E-series car? anyone seen just a really small low booste setup (like a rx7 turbo or somehting)? are they happy with it? what kind of results did they get?

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Posted: Fri May 26, 2006 9:25 pm 
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you looking for people who've turbod for torque? there's an article on autospeed about it, he talks about putting a WRX turbo on his EF.

 

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Posted: Fri May 26, 2006 9:51 pm 
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ahh yeah thats what im after mate. any chance you can link me to that article? thanks heaps mate!
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Posted: Sat May 27, 2006 8:08 am 
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That would be an interesting read
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Posted: Sat May 27, 2006 8:38 am 
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T3 off a VL and it is a very nice car to drive comes on boost nice and early


cheers Mic
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Posted: Sat May 27, 2006 3:32 pm 
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you have to buy the article or a subscription to autospeed to view it but go to www.autospeed.com and search for 'turbo'd' and it will come up. I sold my RX7 turbo because its not suited to the i6 in terms of efficiency even for low boost. Am in the market for a new turbo and went to check out an RB25DET turbo today which i will probably get, I will be following the "turbo'd for torque" philosophy with my setup.
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Posted: Tue May 30, 2006 2:15 am 
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honstly man, the T25 will restrict your motor

if your goin to try this atleast get a GT28

 

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Posted: Fri Aug 11, 2006 9:01 pm 
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im currently putting two wrx tdo4l turbos on my ed xr6 for low end torque and still enough flow up top
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Posted: Fri Aug 11, 2006 9:12 pm 
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my mate put a toyota ct20 on his ed, had full boost by 2000rpm. fully tuned mith link ecu and stage 3 cam it made 250rwhp @ 14psi. but the line on the gragh fell down realy erly, around 4000rpm. and because of the restriction it wouldnt rev past 5500rpm. and he melted 2 manifolds.

 

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Posted: Fri Aug 11, 2006 9:53 pm 
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just got off the dyno today

SR20det with a T25

now ive reached the max of the turbo, it topped making power at about 6k...but this is only a 2L motor making 220rwhp

 

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Posted: Sat Aug 12, 2006 12:54 am 
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Small turbo's would be maasive heaters.. The compressor would be way out of its efficiancy range...
Buy a new master power T70 size turbo ...But make sure it's a master power.. NOT the supper T70 Chinese Junk sold on E bay... Should sell for under $1k as they are $450 - $500 or so U.S....

 

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Posted: Sat Aug 12, 2006 9:35 am 
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i've got a turbo from a VG20DET sitting here that i'm going to try an stick on my 4L EB. i've compared it with a VG30DET turbo and mine is only 2mm smaller on the exhaust wheel and compressor outlet, everything else is identical and my mate has that VG30DET turbo running on his RB30E (as of 11pm last night :P). It starts comming on fairly strong at about 2500rpm and is on full by about 3000rpm.

My warped logic tells me that a VG20 turbo should run on my engine and come on quickly (response is what i want) but the guy @ the turbo joint reckons the wastegate isn't big enuf so i'll get overboosting happen at higher revs so i've just gotta get an external wastegate to work in conjunction with the internal.

 

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Posted: Sat Aug 12, 2006 10:56 am 
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Guys your wasting your time and money with small turbos. Forget spool, forget power, forget everything, they are just too small to pass the 4lt motor exhaust gasses.
Buy a used T4 or similar is your tight.
You need a big turbo, its a big motor yeah... if smaller turbos worked then ford would have used a smaller one on the XR6, and these guys are massive tightasses.
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Posted: Sat Aug 12, 2006 9:42 pm 
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Slabz wrote:
i've got a turbo from a VG20DET sitting here that i'm going to try an stick on my 4L EB. i've compared it with a VG30DET turbo and mine is only 2mm smaller on the exhaust wheel and compressor outlet, everything else is identical and my mate has that VG30DET turbo running on his RB30E (as of 11pm last night :P). It starts comming on fairly strong at about 2500rpm and is on full by about 3000rpm.

My warped logic tells me that a VG20 turbo should run on my engine and come on quickly (response is what i want) but the guy @ the turbo joint reckons the wastegate isn't big enuf so i'll get overboosting happen at higher revs so i've just gotta get an external wastegate to work in conjunction with the internal.


zoom put two VG20det's on an xr6 ute (x shape ute) and that had heaps of response. your not going to be able to run a single small turbo like that, you will hid the surge and choke lines of the turbo and you will melt maifolds from the extreme backpressure.
This is why i gave up on my small turbo, and i had an RB25DET turbo which is good for a lot more power than the VG20.
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Posted: Sun Aug 13, 2006 1:12 am 
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Slabz wrote:
i've got a turbo from a VG20DET sitting here that i'm going to try an stick on my 4L EB. i've compared it with a VG30DET turbo and mine is only 2mm smaller on the exhaust wheel and compressor outlet, everything else is identical and my mate has that VG30DET turbo running on his RB30E (as of 11pm last night :P). It starts comming on fairly strong at about 2500rpm and is on full by about 3000rpm.

My warped logic tells me that a VG20 turbo should run on my engine and come on quickly (response is what i want) but the guy @ the turbo joint reckons the wastegate isn't big enuf so i'll get overboosting happen at higher revs so i've just gotta get an external wastegate to work in conjunction with the internal.


I run TWO VG30's on my V8 and they where too small...Untill I spent $2400 on high flowing them...You need atleast a 61mm turbine wheel 70+ trim ...
Check turbo flow maps then work out what your engine flows...

 

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