Author | Topic |
Location: logan river brisbane
Registered: July 2005
|
|
|
Location: sydney
Registered: June 2003
|
Re: advice on A\R size please [.7 front .82 rear]
|
Fri, 19 August 2005 01:00
|
|
i would doubt the t3 turbo would make 700hp with a .82 housing
if it was a 1.06 it would sound more belivable provided the turbine wheel was big enough
there is a lot more to selecting the right turbo than just housing size.
there is a lot more things to take into consideration eg. compressor maps,turbine & compressor wheel sizes,plain or roller bearing......
garret gt turbos are getting so cheap lately ur better off gettin one of them gt3540 would be the best bet
i used to have a gt3040 with a .82 housing and it was rated @600hp with the 1.06 housing so it was probably only good 4 500-550hp with the .82
when u compare it to the gt3540 the only noticeable difference is the turbine wheel is bigger on the 3540 and its rated at 700hp with the 1.06
at the end of the day the t3 with the .82 is the best bet but the power figures seem far fetched, but its the better of the 2
and look into the other factors i mentioned some of them will affect the spool up
|
|
|
Location: logan river brisbane
Registered: July 2005
|
Re: advice on A\R size please [.7 front .82 rear]
|
Fri, 19 August 2005 02:07
|
|
thanks tt86'I agree the larger rear housing turbo is probably around 500 hp.I now have "turbocalc" software from the ray hall turbos site.Helpful.
|
|
|
I Supported Toymods
Location: Sydney
Registered: December 2002
|
Re: advice on A\R size please [.7 front .82 rear]
|
Fri, 19 August 2005 02:16
|
|
Get some more info from this guy... the specs just don't add up right.
Get at least the intake and exhaust wheel diameters from him.
|
|
|
Location: logan river brisbane
Registered: July 2005
|
Re: advice on A\R size please [.7 front .82 rear]
|
Fri, 19 August 2005 03:01
|
|
Yeah,its Dylan cameron in perth on ebay as drifta_r32 he has a lot of positive feedback but his power claims on the turbos seem optomistic at best.I have requested wheel size and trim bit its loking like a 500 hp at the crank turbo.Need about 550 at the crank for my goals,so it could be OK.Hopefully he will be able to supply more info.
Thanks.Pete.
|
|
|
Location: Parramatta
Registered: July 2002
|
Re: advice on A\R size please [.7 front .82 rear]
|
Fri, 19 August 2005 03:09
|
|
if this is to go on a 1j definatly the one with the biggest rear, if you dont mind lag and want big power always (well most of the time) go for the one with the largest rear.
|
|
|
Location: sunny coast, qld
Registered: October 2002
|
Re: advice on A\R size please [.7 front .82 rear]
|
Fri, 19 August 2005 03:30
|
|
I agree with tt86 that the power figures seem optimistic.
Try and find out inducer and exducer diameters. The inducer number is the one that people will refer to when talking of turbos eg. 66mm turbo.
I understand that a lower A/R turbine housing increases back pressure and therefore reduces power in the top end but wouldn't a t4 exhaust housing be bigger anyway. So the area divided by the radius may be a lower number but the wheel still may be larger than the t3 turbine. Do you understand what I am trying to say in a not very clean manner?
For reference my HKS ta45s has a 65mm inducer on the compressor wheel (big) and it has a .7 a/r compressor and .92 a/r turbine. It starts to come on boost at 3000rpm (1psi) and full boost by about 4100rpm (16psi). It feels pretty laggy and at present I can't even hit boost in 1st gear (which I suspect is because of very low diff gearing). Also, the dyno numbers weren't too good but the real truth will come out when I hit the strip tomorrow
BTW pete, if you aren't doing anything come over to Willowbank. Trying to get a few 1j guys out there
|
|
|
Location: Adelaide
Registered: June 2002
|
Re: advice on A\R size please [.7 front .82 rear]
|
Fri, 19 August 2005 04:01
|
|
Hey Chris-have you sorted out the ignition control yet? Is the wolf doing it now, or is the stock ECU still doing the spark timing?
|
|
|
Location: sunny coast, qld
Registered: October 2002
|
Re: advice on A\R size please [.7 front .82 rear]
|
Fri, 19 August 2005 04:55
|
|
No, stock ecu still doing timing. Haven't got the auto controller yet. Just want to get out there and have a go and see that other things are working ok.
|
|
|
Location: logan river brisbane
Registered: July 2005
|
Re: advice on A\R size please [.7 front .82 rear]
|
Fri, 19 August 2005 06:08
|
|
All info seller has is as follows
Master power housing Garret internals
Front cover A\R .7
Rear cover A\r .82
T3 flanged
Model T61
Power claims-500rwhp genuine at 14psi on rb26 stock internals,able to boost to 25psi.
I requested further info and seller claims he has none.my aim is to ensure the item has not been grossly misrepresented so that I can go ahead with the purchase.Under the purchase agreement i have approx until monday to pay.So-any info out there?
Cheers.pete. [I know the info sourcing should be done before commiting,i was in a mind altered state.damn crack! ]
|
|
|
Toymods Vice President
Location: Sydney
Registered: May 2002
|
Re: advice on A\R size please [.7 front .82 rear]
|
Fri, 19 August 2005 06:45
|
|
I'm pretty sure those master power turbo's use a Euro T3 housing. This is a full size T4 housing with a T3 flange. They definately make more power from the same A/R housing than a T3/T4 does, from what I've seen.
|
|
|
Location: logan river brisbane
Registered: July 2005
|
Re: MASTERPOWER T61 ? advice on A\R size please [.7 front .82 rear]
|
Fri, 19 August 2005 15:52
|
|
have now been to master power site [brazil] the t61 they list has reverse sizes to the figures my seller is putting forward.ie .84 comp and .70 turbine,also split pulse T4 inlet rather than T3 from seller.No power figures or other useful info or links on the site either.I guess its all a powerful message-go with the proven and reliable brand or go through the shite i am doing! cheers.Pete. she'll be right,I have confidence that the seller is a good guy........
|
|
|
Location: brisbane
Registered: December 2004
|
Re: MASTERPOWER T61 ? advice on A\R size please [.7 front .82 rear]
|
Fri, 19 August 2005 23:09
|
|
imk weary of these turbos alot of bad feedback from these but with the garrett internals should be ok does he have something to prove it has garrett internals...
|
|
|
Location: logan river brisbane
Registered: July 2005
|
|
|
Location: Vancouver
Registered: June 2004
|
Re: MASTERPOWER T61 ? advice on A\R size please [.7 front .82 rear]
|
Sat, 20 August 2005 04:50
|
|
P.N. 802140...
cold side has a T61 compressor wheel inside a T04S style housing with 0.70A/R (4" inlet, 2.5" outlet)
hot side has a T04 "P" trim turbine inside a 0.84A/R T4 turbine cover which happens to have a T3 inlet flange, and a V-band outlet flange.
As one other fellow pointed out, the T4 family are available with the T3 flange, and are commonly referred to as a "euro flange" housing. The only thing "T3" about this turbo is the turbine inlet flange. EVERYTHING else about it is "T4" sized, including the "P" trim turbine wheel. On that note, the P-trim turbine and T4 sized turbine housing will massively outflow any T3 housing with a "stage 5" wheel... That's a big turbo, so I hope you are putting it on a motor that will turn it. It's good for 500HP+, but needs some airflow through it to actually get it to the point of positive feedback...
[Updated on: Sat, 20 August 2005 04:52]
|
|
|
Location: logan river brisbane
Registered: July 2005
|
Re: MASTERPOWER T61 ? advice on A\R size please [.7 front .82 rear]
|
Sat, 20 August 2005 12:22
|
|
thanks heaps there 510rob,-pming a few questions,hope you dont mind
|
|
|
Location: logan river brisbane
Registered: July 2005
|
Re: MASTERPOWER T61 ? do you speak turbo lingo?
|
Sun, 21 August 2005 09:14
|
|
after a lot of investigation i found this turbo to be all the seller said it was plus some,in fact too big for me,more a 600hp turbo and more suited to a 2J imho.the seller was really good about it and allowed me to drop out of the sale.The seller provided access to a dyno sheet of the turbo on an rb26 which put out approx 470 rwhp,power started approx 4500rpm and climbed steeply to redline.Would support more power on a bigger engine.
I learnt a lot from this exercise [do your homework]Thanks again to those who offered help.Cheers.Pete.
|
|
|
Registered: June 2002
|
Re: MASTERPOWER T61 ? do you speak turbo lingo?
|
Mon, 22 August 2005 04:27
|
|
A little late I know, but a friend of mine has one of these on a VVT-i 1JZ and it is as laggy as a MOFO!!!!
Getting over taken by my mum in her paseo in the bottom end, Full boost (18psi) ~4500rpm, screams like a banshee to 7000rpm (when it is starting to real fun) and it's rev limiter central!!
Not much fun at all considering what a beast they are with the stock turbo!!
|
|
|
Location: logan river brisbane
Registered: July 2005
|
Re: MASTERPOWER T61 ? do you speak turbo lingo?
|
Mon, 22 August 2005 17:50
|
|
yeah,thats what the dyno sheet of the 2.6 skyline showed also
|
|
|
Location: u.s.a. south
Registered: April 2004
|
Re: MASTERPOWER T61 ? do you speak turbo lingo?
|
Mon, 22 August 2005 17:55
|
|
I got a few friends that run 60-1/P-trim and 62-1/O-trim Master power turbos on their 2.5 and 3L inline 6s. As they're an inexpensive alternative, I too have been curious about their durability. No problems after ~16months so far.
The rb25 hits ~4200rpm and goes nutz
|
|
|
Location: logan river brisbane
Registered: July 2005
|
Re: MASTERPOWER T61 ? do you speak turbo lingo?
|
Mon, 22 August 2005 18:14
|
|
yeah,my enquiries found evidence that the quality can be excellent eg one user needed a V flange welded on and the welder told him that the quality of the metal used in the casting was first rate ie welded beautifully,some of their turbos use the 360 degree bearings also [supposed to be a good thing]
price can be spot on also! not so many wheel size choices though.I have a fairly comprehensive list of their range if anyone wants a copy just send an email please.
|
|
|