Outer Limits 4x4 Board

I have a mate with a garrett T3 turbo with a .61 exhaust after ratio which he no longer requires. I Was wondering if these turbos are well suited to the td42 engine, and also would it be worth getting the exhaust housing changed to .82 ratio if I purcahsed the turbo. Any comments would be greatly appreciated.

cheers
cuzza

i used to have a high flowed T3 in my old comp ute

definately can recommend them

T3's come in the safari turbo kits ...

cheers Hoonz,

do you know roughly what it would cost to hi-flow the turbo, and also how much does hi-flowing the turbo effect spool up times.

cheers
cuzza

Remember that the "T3" specification is merely a cartridge size - compressor / turbine housings and wheels can be just about any combination of the above.

T28 and T03 are roughly similar in cartridge size (the T28 being slightly larger) - the T28 is typically used on RB25's as used in the Skylines - but this does not mean it's suitable for a TD42.

the .61 A/R is a good start in calculating suitability for the application - but this is only half the picture; you still need compressor sizing in order to calculate potential and max flow based on your engine size & determine if it's right for your application.

cheers spannercrab

I also have the core part number, would this allow me to obtain compresser and turbine diameters in order to calculate the trim. Also if i do manage to calculte the trim do you know what area ratio is suitable for the td42

I would suggest that this A/R is a bit small for a TD42 - although that's not to say it wouldn't WORK - anything will work ... just a matter of how well!

Really for a TD42 you should be aiming for something around the .55 --> .8 range A/R on the turbine to achieve a good all round boost performance - tuned more toward the top end (from 2000 onward) - the larger the A/R, the more heat & gas it takes to spool i.e. higher RPM's - then it needs to be matched with the correct compressor.

The relatively small A/R will probably give you very fast spool up at low revs, then will run out of go before peak torque is achieved (around the 2-3000 RPM).

Compressor for a TD42 - from memory is the T3 Super 60 trim compressor ideally?

There is a reasonably good site in terms of calculating compressor trim etc here:

http://www.turbominivan.com/tech/turbo201.htm

And it's in terms even I can understand!

cheers mate, thanks for the help