t66 turbos on rb25det

[dabigbolf]

hey,

just wondering about the t66 turbo, and how'd they go on an rb25det. what modifications would need to be made, manifold, exhaust etc?

what power would be made on around say 16psi (for starters), and how much the it would cost to get one set up.

can they be made to spool up at around 3500 rpm.

anyone with t66's on there rb25det's would love to see ya results.

cheers

[dabigbolf]

only reason i ask is because i figure bigga turbo+"less" boost= still big power. meaning dont have to boost as much for same results, but u get a little lag instead.

there was an rb30et with one and it made over 330rkw, but that was on around 22 psi. just wondered if many had them on rb25det's.

[CMS Drifter]

How early they spool is determined by a number of things.

mainly trim and exhaust a/r of the turbo. i dont know very much about the T66 and if they come in different a/r's or trims but would assume that they do and can be matched to suit your application.

[dabigbolf]

thanks.

if i was to say that on 16psi a t66 would make around 280rwkw, with other mods such as fuel system, intercooler, exhaust, and ecu, would i be close to the mark. or would it be more like 240rwkw.

the thing is, i have a dream. and in this dream i want to run 11's, and when running 11's ......

[GTS-t VSPEC]

dabigbolf,

I know someone who had one of these on there RB25DET, they ended up going for something else, they didn't like the lag. Made good power, but it was all up top.

See'ya:burnout:

[hungry6]

I did the exact set up on my last engine and it started to spool up about 3700-4000 rpm and then by 4001 rpm she hit full boost(20+psi) and three lanes from where u were, when u last looked at the rd, and the time it take to go from 4001-7500rpm is 0.000001 of a sec.

[YBSLO4]

Ever looked at something like a T04R or T51R from HKS? Big power, not as much lag as a T66. The T04R kit is a medium-large HKS single turbo capable of 730+rwhp (Dynojet / 860 flywheel horsepower) on high boost. The JUN s15 has one and pushes out big power, so if it works well on SR20's, it should work just as well on an RB

TO4R specs

T04R Turbine wheel dimensions are 74.2mm/64.7mm

T04R compressor A/R is .70

Available T04R turbine A/R's are .81, .84, .96 and 1.15

HKS turbo inducer / exducer sizes

HKS T04R 66.7mm/84mm

HKS T51R KAI 70.3mm/94mm

HKS T51R SPL 76.5mm/102.2mm

[dabigbolf]

hey,

thanks for all the info. i am not to sure about which way i want to go. Ball bearing is much more expensive, and dont really cant justify spending into the $3000 mark on just a turbo. The large garret items however can be gotten for around the $2000 mark. but a t04e might be another option.

hungry6 wat sorta power were you making at the treads, and wat sort of times would a turbo like this be good for. 1250 kg car. i know theres heaps of other variables, but did u manage a good time.

thanks

any more input welcome from other guys with big turbo setups

[hungry6]

it was 127mph and it took for ever on street tyres. My first go at a drag meet. lol OMG the laffs. Also i did back off before the line.

[Guest INASNT]

YBSLO4

a t51r on a stock rb25det would be a pig to drive!

[dabigbolf]

hey,

i sorta thinking away from the t66 idea. 4000rpm spool sounds a bit boring for street use.

was thinking of getting a turbo which can still make around the wsame power, but just have a smaller housing.

is that how it works?

if not how can i make the same sort of power but have boost coming on a hell of a lot earlier.

is this possible or is it a compromise.

[Guest INASNT]

get a 2835 or 3037

[dabigbolf]

cost to much.

name brands = too much. they are like 4 grand.

will definatley be going a garret something. better value for money i reckon. personal choice, but i reckon u pay at least another grand for the label of HKS.

may be quality and all that, but still.

[Guest INASNT]

Ring up GCG they do alot of good work

[dabigbolf]

yeah will do.

hey did u upgrade yours yet? if so any results?

theres a guy on the performance forums, who gets the gcg turbs at cost price. seems to be pretty decent, always helpful.

[Guest INASNT]

since u r in melbourne i know a guy that can custom build u a garret one to whatever spec u wish!

Mine is yet to be done, atleast 2 more weeks before anything is done

[dabigbolf]

nice.

cant wait to see ya results. once the time comes to upgrade i keep it in mine.

[Zdenko]

hmm.. i wouldnt mind hearing about that guy that builds turbos to your owns specs...

where is he based?

[Guest wasted]

dont bother with 25, money you spend can be use on RB26DETT, need 1x RB26, + HKS T51R SPL signature turbine, 2bar boost and u are 900hp junkie !

[Guest INASNT]

gerald from ice knows the guys