How much more air does the GT30r flow compaired to a t618z any thoughts

 

Considering I've never seen a compressor map for a t618z I'd say it's a hard thing to figure out. Plus the GT30 is MUCH more readily available than the T618z.

 

The GT30R will outflow the T618Z. This is the only picture I could find regarding the Trust unit and its power potential.

 

And here's a link for the GT3071R map:

http://www.turbobygarrett.com/turbobygarre...T30/GT3071R.htm

 

I found that the GT30r has a CFM OF 700 450HP 14.7 PSI Not shore what this means amount of air it pushes ect

 

T618z has the same size comp wheel as the t5 50.50/68.00 GT30R 53.1/71.0 BIGGER Turbine T6 65mm/55.3 GT30R 60/88 !!!!!!!!!!.Im thinking that a T620Z could flow as much at a gt30r cheers for the link guys ,im having my t518z machined out for bigger wheels im thinking it would cost alot less then do the gt30 upgrade plus be alot quicker.

 

Keep us updated.

 

Sounds great! Keep us updated.

 

Depends on how much the machining costs. I believe the GT3071R-WG is about $1,200 USD on Ebay at the moment. Not a bad deal.

 

Im just finding out if thats the largest we can go on the machining of the T518z hell ill go as big as the 10cm housing will go if i can get it to push more then the GT30r then i will. Turbo is coming off tusday wastgate ported 28m ,manifold ported to match gasket plus anything ells we can c leaving the greddy downpipe for the mo ,might need the back pressure if i get any creep then re-tune later with new downpipe i have no cat and 3" exhaust so iv had creep problems. ie 9.7psi 301whp then after 30 miles on the road warm day for britain lol creeping to 14.5 hummmm but did feel good .

When i tuned for top hp my tunner and myself did not know about the second injector map so run out of fuel at 13.5 psi so that was at 50% im thinking that i should have enough fuel for the new turbo 550s if not then a fuel reg can be added cheating but works