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Precision Billet Turbos

R32GTR/Iceland
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SimonR32
SimonR32

The 6262 sillyness is never ending... New cams just got the most power and torque it's ever made

SimonR32
SimonR32
Mick_o
Mick_o

Dale is 100% correct its a well proven fact that smaller cams in RB's aid in response. Even going from a stock cam to a type b pon cam will cost you response. Been many track guys that have thrown the

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SRS13 Proficient

SRS13

Posted
Posted

i have seen dyno sheets floating around which are probably in this post somewhere anyway - which show the difference in the response between, 6266, 6466,6766 being about 500rpm on a 3.4L ...

I have even emailed precision directly who have confirmed that it would be about 300-500rpm on a 3L

Thanks. Have seen it but not sure on that one. I think the 6262 is the one.

donut_kng Experienced

donut_kng

Posted
Posted

Thanks. Have seen it but not sure on that one. I think the 6262 is the one.

Yeah just give it a ago they are pretty interchangable apparently.

I went for the 6466 as I figure if worst case it was 600-700 difference in response from the 62-64 - something i doubt im really going to notice when its on an engine which will snap the rpm needle within a matter of seconds anyway - which is worth it considering the top end gains!

  • 2 weeks later...
rbjunkie Community Regular

rbjunkie

Posted
Posted (edited)

Is anyone running a 6266? How much lag are we talking about between the 6262 and the 6266? Can't decide on what to go for. If the RPM difference is negligble i'd be more inclined to go with the 6266 for the potential to make more power at a later date. (Both turbos with 0.84 Twin scroll)

Looking to make 400kw on a RB26 with all the basic mods. Will a 6262 make that power on 98pump fuel (say no more than 25psi)? I've seen that SimonR32 made 420 but that was on flexfuel.

Edited by RRP1
SimonR32 Grand Master

SimonR32

Posted
Posted (edited)

I actually made 450kw and trust me there is plenty more in it but I ran out of fuel pump.

I wouldnt be suprised to see another 30-40kw if I ran 25psi but as you said that is on e85.

6262 is a nice balance for decent power and not too much lag. I was tossing up between it and the 6266 and went the smaller. I think I made the right decision

Edited by SimonR32
Frosty Grand Master

Frosty

Posted
Posted

no probs....i dont think there will be too much difference to be honest but i cant find the wheel sizes for the 6266

6262 is as below tho

Compressor-

Wheel Inducer: 62mm

Wheel Exducer: 82mm

Turbine Wheel -

Wheel Inducer: 72mm

Wheel Exducer: 62mm

i think i did read that the exducer of the 66 was slightly bigger but dont quote me

rbjunkie Community Regular

rbjunkie

Posted
Posted (edited)

PTE 6466 - for anyone looking at this turbo.

Compressor Wheel 2.535" (64.39mm) inducer / 3.410" (86.61mm) exducer

Turbine Wheel 2.920" (74.17mm) inducer / 2.600" (66.00mm) exduce

HKS T04Z:

Compressor Wheel:

T04R/T04Z, Inducer 66.7mm, Exducer 84mm.

Turbine:

T04 P trim, Inducer 74.2mm, Exducer 64.6mm

Garrett GT3540R/GT3582R/GT35R:

Compressor Wheel:

56 trim GT40, Inducer 61.2mm, Exducer 82mm.

Turbine:

84 trim GT35, Inducer 68mm, Exducer 62mm,

for comparison..

Alot of guys are running the 6466 in favour of the 6266 in the states and report no change in spool/response but more power up top.. Would like to see some results on RB26 though.

Edited by RRP1
Lithium Grand Master

Lithium

Posted
Posted

So how do people reckon a PT6466 would compare with a Garrett T04Z in overall performance? Would you be able to use the Precision in the Garrett's place and expect to make similar (or better) power on pump gas on a suitably built engine?

Frosty Grand Master

Frosty

Posted
Posted

PTE 6466 - for anyone looking at this turbo.

Compressor Wheel 2.535" (64.39mm) inducer / 3.410" (86.61mm) exducer

Turbine Wheel 2.920" (74.17mm) inducer / 2.600" (66.00mm) exduce

HKS T04Z:

Compressor Wheel:

T04R/T04Z, Inducer 66.7mm, Exducer 84mm.

Turbine:

T04 P trim, Inducer 74.2mm, Exducer 64.6mm

Garrett GT3540R/GT3582R/GT35R:

Compressor Wheel:

56 trim GT40, Inducer 61.2mm, Exducer 82mm.

Turbine:

84 trim GT35, Inducer 68mm, Exducer 62mm,

for comparison..

Alot of guys are running the 6466 in favour of the 6266 in the states and report no change in spool/response but more power up top.. Would like to see some results on RB26 though.

6466 only comes in ball bearing tho which is all good but cant justify the extra cash for it

Frosty Grand Master

Frosty

Posted
Posted

So how do people reckon a PT6466 would compare with a Garrett T04Z in overall performance? Would you be able to use the Precision in the Garrett's place and expect to make similar (or better) power on pump gas on a suitably built engine?

i dont think you can go wrong the PTE to be honest

SimonR32 Grand Master

SimonR32

Posted
Posted

So how do people reckon a PT6466 would compare with a Garrett T04Z in overall performance? Would you be able to use the Precision in the Garrett's place and expect to make similar (or better) power on pump gas on a suitably built engine?

Should make plenty more power without being too much laggier from what I have seen

SimonR32 Grand Master

SimonR32

Posted
Posted

Thats interesting, I'd have hoped for it to be at least as responsive!

Well my 6262 is better than my old T04Z but not the miracle that some would lead you to believe. The 6466 is a fair wack bigger (195hp rated), I doubt you would be getting that for nothing :)

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