Jump to content
SAU Community

Recommended Posts

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 .

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

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 .

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 .

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • What can't be done with a little bit of decking board or similar timber bolted to a hub flange via 2 wheel nuts is not worth talking about.
    • I noticed something. On the tps sensor and the sensor behind the adjustment screw is adjusted towards the far left. Are these screws supposed to be centered? (this sensor was in the same position before the tune as well)  Also attached a photo of where my car usually idles at when warm (sometimes a tiny bit above that). I think I might have screwed up the calculation and it might have better than I thought lol at 750rpm still not 650rpm though.      
    • So for both general interest of engine health, and to rule out any coolant/oil issues, I organised an oil analysis done on the 125,000klm oil Results below, all good, just a bit of fuel dilution which I'm not too worried about
    • This is actually a really good way of measuring what wheels fit. If only there was a similar measurement between hub face and suspension :p That said, it's probably pretty simple to actually measure it all with the wheel off the car for the rear. The front is a bit more complex but.. 
    • Being the top Google search result for R34 wheel-related inquiries, lemme throw down my experience. I calculated that 100mm from hub face to wheel face is about the perfect fitment for my ENR34 sedan.  I've been running 18x8.5s, ET35, with a 1" spacer. So, 8.5in to mm = 216mm. 216/2 = 108mm. 108-35 = 73mm. 73+ 25 (1" to mm) = 98mm.  If you wanna get close to this on dif widths, here are the offsets you'll want: 9" - ET around 15mm 9.5" - ET around 20mm 10" - you're crazy, but ET around 30mm All these should fit perfectly on a non-widebody, non-GTR Skyline. Note that it's probably the absolute max, and you're probably better off running a couple degrees of camber in this config, but it looks great, super flush.
×
×
  • Create New...