A few questions

[Loofee95SE]

1. I just got me a new (used) turbo. from what i belives from redtop SR. on the comp housing it said. A/R .80 , is that right??done some search but came up emthy handed.2. what size tyres will fit best on 17 by 7.5 +45 offset? for 240 fast back. thanks :ylsuper C

[limecorrado]

I Borrowed this from a post i found yesterday in the Achives, so don't hate me if the info is Untrue.

J SPEC SilEightyT25 - Found in the CA18DET S13 Silvia's and 180SX.Compressor: 45 trim, .48 A/R housingTurbine: 62 trim, .49 A/R housing

T25 - Found in the S13 SR20DET Silvia's and 180SX.Compressor: 50 trim, .48 A/R housingTurbine: 62 trim, .64 A/R housing

T25 - Found in the VG30DETT 300zx.Compressor: 60 trim, .48 A/R housingTurbine: 62 trim, .64 A/R housing

T28 - Found in the S14.Compressor: 60 trim, .60 A/R housingTurbine: 76 trim, .64 A/R housing

T28 - Foud in the Quad Throttle Body Pulsar GTiR SR20's.Compressor: 60 trim, .60 A/R housingTurbine: 79 trim, .86 A/R housing

T28 - Found in the the S15 Silvia/200sx.Compressor: 60 trim .60 A/R housingTurbine: 62 trim, .64 A/R housing

Also, the cams in the GTiR SR20DET and the RWD SR20DET are the same. Thecams that they have are different than the N/A SR20DE though. The SR20DEThas a longer duration exhaust cam, for obvious reasons.

[r34 gtr]

i have no idea what that turbo is from man, is it much bigger than the ca turbo? maybe you got a t25 with a custom fit compressor housing. as for tires, i would think 225 or 235 on those 7.5s. my friend has some 235s on his 17x7.5 wheels and they fit great.

- tim

[Loofee95SE]

yeah, that's all i've found on the housing, but i think it's out from a redtop SR, anyway..how about the offset on my wheels is it bad??? +45 on Kosei K1. i test fit it on my lil bro S14 with Z32 brakes and it didn't fit. some body told me I may need 25 mm spacer!!! any input on these guys??

[r34 gtr]

hmmm, i would def. try it on yours before you make any conclusions. if you havnt gotten the wheels yet i think you may want to try something in the mid to low 30s for offset (if i remember correctly...). i would ask around and see what people are using on theirs.

- tim

[redamnavit]

With 7.5s you'll need something in the 12-15mm spacer size. Better to err on the larger size. Search on the wheel & tire forum though; you'll get a definitive answer there. If you want to experiment go back to your bros S14 with a handful of washers that'll fit over the hub bolts. Add two to each bolt and mount the wheel. Keep adding washers until it fits, then measure the final washer stack. Its ghetto but it'll give you a no-guess answer.

[cbryant]

I had 17x7.5 +40 Antera 109's on my S13. Pirelli 225/45/17 tires. With a 1.5" drop (TEIN NA), the fronts were flush (-.4 camber) and the rears inset approx. an inch (-1.5 camber). The 225's were almost square to the lip of the rim - no bulge but not stretched. The diameter is close to stock, though slightly on the high side.

You can see pics here: http://www.imagestation.com/album/?id=4289789031 Image 11 shows them mounted to by dirty commuter beater.

Chris

PS They're for sale BTW - $200 + shipping.

[rico05]

My T25 has an A/R of .80 on the compressor as well. Wonder what that means???

[float_6969]

+45 is pushing it. S13's really dont like those high offsets in the front. Unless the wheel is shaped just right, I'd be very suprised if they'll clear. I had Z32 wheels on my car for a while and I had to have a spacer in the front because they rubbed without it, and I think a Z wheel is only a +43. If they do clear, I wouldn't put anything wider than a 225 on it, or the tire will probabally rub.

[Loofee95SE]

well the wheels are Kosei K1 I got all 4 with Decent tyres for 400.so i guess, it will be sitting in my room for a while. cos it 5 lugs. and I'm planning to do a 5 lugs swap and Z brakes in about 2 months. yeah, the T25 usuallly come w/ .64 A/R this has larger .80 A/R does it also mean that it may flow better than the .64 ones??ne input on this turbo...from the turbo geek here??

[float_6969]

Well it "should" flow more air, but it will spool slower. They're all crap anyway. Get a GT2530! JK, I've got an S14 SR on mine. Well, if I ever get it back together it will be on mine.

[Loofee95SE]

well i had the $ gt2530 will be my choice but ....i got this for 100 in good shape no shaft play. so i'll work on it for the time being. thanks C