Boredom, Prochargers, & GT47's

[Tripper]

Far out, change you avatar!

i would but cant find one i like that fits in the file size allowed

[myliberty]

Fark don't tempt me.

I told you I'd give ya $500 for it.:D

Once I get the Stato back and find the oil leak I'll decide what I'm going to do.

Interesting:

http://www.turbofast.com.au/TFmatch.html

Says I need twin GT30's to make 16psi and 978hp!:p

It sais I should use a "Please select two turbochargers"
I have a GT40.. same thing.

[morerevsm3]

Some selection criteria for forced induction systems (based on article by Corky Bell in GRM)

* Margin of safety: How does kit avoid detonation?
* Air/Fuel mixture: How does kit maintain correct mixture?
* Intake air temperature increase: Any forced induction system will increase intake air temperature. The system that increases temp the least has highest thermal efficiency. Ranking of technologies (Best-&gtWorst): Turbo, Lysholm screw SC, Centrifugal SC, Roots.
* Intake air cooling: If system has intercooler, this will reduce intake air temp, thus less tendency to detonate, and more air mass per volume (thus more power, assuming proper fuel ratio maintained). Application with very low max boost don't need intercooling since the pressure increase is not large, thus the temp increase isn't either.
* Boost curve: Where is boost produced, peaky vs. early or broad. Ranking: Lysholm screw-type SC, vain-style turbo, Roots, classic turbo(?), Centrifugal SC last.
* Lag: How much time between gas pedal application and noticeable boost. THis is significant at low rpms. Ranking: Lysholm screw-type SC, vain-style turbo, Roots, classic turbo(?). Centrifugal SC has very little boost below 3K.
* Power: Ability to flow air at high thermal efficiency with least power losses to drive unit. Ranking: Turbo, Centrifugal SC, Lysholm, Roots.

[WHITER33TT]

Why not twin GT47's.


[ATTACH]32199[/ATTACH]

That pic looks sick. Those turbos are huge

[blackbart]

That pic looks sick. Those turbos are huge

Get ya brudda to do it.... and post pics.:D

[Rz]

Masterpower turbo, fuckload cheaper than GT47 & from what I hear pretty decent.

TK

had to weld a elbow on a masterpower t70 thing today , its a baby next to the 4708 , let alone the 4718.
id guess half the output at best.

[blackbart]

Customer? Where'd the turbo come from? Prices? :D

[Rz]

some random asshole off the street brought it in , i think they are $700 ish ?

[Dave]

Customer? Where'd the turbo come from? Prices? :D

550USD plus shipping. They are making 700-800Hp out of them and running sub 10s in supras and mustangs, with the 1.06 rear housing. I am pretty sure MP also do a copy of the GT45, which would be more suitable to a big block, depending on what you are chasing.

[psi999]

Here are some wheel sizes for a comparison:

GT4708 Comp wheel 80.7mm / 108.0mm, turbine 92.7mm (82 trim)
GT4718 Comp wheel 88.0mm / 117.6mm, turbine 92,7mm (82 trim)
GT4294 Comp wheel 70.3mm / 94.0mm, turbine 82mm
t04Z Comp wheel 66mm / 84mm, turbine 64.5/74mm

MPT70 Comp wheel 69.1mm / 91.0mm, turbine 64.5mm/74mm (68.5mm/76.5mm with q trim wheel)

So looks like the MPT70 is close to the GT42 in comp size and same rear wheel (P trim) as t04Z.

550USD plus shipping. They are making 700-800Hp out of them and running sub 10s in supras and mustangs, with the 1.06 rear housing. I am pretty sure MP also do a copy of the GT45, which would be more suitable to a big block, depending on what you are chasing.

Yep they do, part number 810017 (GT45)

Also a GT42 PN 805138 & GT46 PN 802308

Going rate on the T70 is around $585US+100 shipping ~ $800 AUD landed.

[Dave]

Yep they do, part number 810017 (GT45)

Also a GT42 PN 805138 & GT46 PN 802308

Going rate on the T70 is around $585US+100 shipping ~ $800 AUD landed.

What is the price on the GT45, just out of interest?

[psi999]

About $680AUD+shipping, so around $800AUD landed.... Same as T70.

1.05 A/R rear (T4 Divided), would make some serious HP.

[blackbart]

Hmm, I think two may be in order.

Thats pretty cheap.

[Dansedgli]

Great prices!

[WHITER33TT]

About $680AUD+shipping, so around $800AUD landed.... Same as T70.

1.05 A/R rear (T4 Divided), would make some serious HP.

These are cheap. What is the hp rating?
What size wastegate would be recommended? 38mm for each side?