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New Garrett Integral Gate Housings Soon .

discopotato03

By discopotato03,
in Engines & Forced Induction

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discopotato03 Grand Master

discopotato03

Posted
Posted

Hi all , there are soon to be some new Garrett T3 flanged integral gate exhaust housings in .63 and .82 a/r for the GT30R/GT3540R ranges . They are to be available in April 2006 but no details yet .

This will help those who want to use GT30R's and GT3540R's but without the external wastegate . The rumor is that the dump side will look something like the Fords XR6T's GT3540R housing .

More soon I hope , cheers A .

RACESPEC Rising Star

RACESPEC

Posted
Posted

This has been in the spanners for well over 2 years now, it should have been done earlier, but GARRETT have been constantly changing cast manufacturers, thus the delay

As disco stated, late April/early May

The backorders on them are HUGGGGGGGGGGGGGEEE to say the least

Thanks

Tarek

RACESPEC

discopotato03 Grand Master

discopotato03

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LOL , don't know ATM . The turbo is a long way off yet but with some recent research into GT3240's and some of Garrett's GT bush bearing turbos it seems there are 82mm GT40 compressors in 50 , 52 and 54 trims . I feel the 56T on Garretts GT3540R is a little big for the power or I should say torque I want so its a waste of turbine energy spinning something thats never going to achieve its potential . Far better to use the compressor wheel trim that suits my needs as it should be more responsive and increase turbine efficiency a bit . The $64 question is can the wheels be bought and is the back of the wheel the same as the BB version ie flat back or tulip shape and so on . Brett from GCG tells me they can drill/bore the centre hole if necessary so if the bush bearing shaft is smaller its not a problem . If I'm lucky and it bolts straight up I'm laughing .

Another thing to look into is this extrude hone process , the Americans say that noticable gains are had from extrude honing the turbine housings . This is not so much from a making the passages any larger but smoothing them out which aids the flow rate but not at the expense of gas speed . Its supposed to give a few more points of measurable turbine efficiency . Some of the turbo sellers will do this in the US at an extra cost so its an option if you buy from them . It could be done here but the set up cost is not cheap and I have seen the result of just a bit (lot) too much taken out .

I was told about these C117 compressors about 18 months ago , like the later GT40R has , and there is supposed to be new turbine designs on the way but when is anyones guess - they may already be out there in truck turbo's .

So I can wait and when the car eventuates the goodies get stashed away as turbo technology marches on and it all comes together .

I hope I can resist the temptation to play with the RB20 - maybe just an rb25 turbine housing - see I'm hopless !

Cheers A .

discopotato03 Grand Master

discopotato03

Posted
  • Author
Posted

For Cubes hot off the press , Brett tells me there is an 82mm 52 trim BCCW18C compressor (59.1mm inducer) available . Just have to figure how difficult it is to fit and if HKS's idea of using the .60 a/r TO4S cover for 50 and 54 trim 82mm wheels is the go .

The amusing part is that with these GT40 compressors the inducer sizes are as follows .

50T = 58mm

52T = 59.1mm

54T = 60.3mm

56T = 61.4mm

So only 3.4mm the difference 50 to 56T though its supposed to make a very real difference in the way they load up the turbine particularly initially . As I have mentioned before the difference between a 52 and 56T GT30R is 500 rpm .

Cheers A .

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