is my turbo about to die? - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

nicku · 12-19-2007, 01:01 AM

I have a HKS GT2510 for sale. But you will have to either open up the wastegate since it was welded by the previous owner or you go with external wastegate setup.
I have seen people open up the welded wastegate, and you just have to flat the surface, thats it. the turbo is in a great condition. I can send you some pictures if you want. pm me

GSXRJJordan · 12-19-2007, 03:55 AM

If revving the car in neutral doesn't re-create the sound, then you probably do have a bad turbo (only makes the sound on spool up). Reading through originally it sounded like you had a leak somewhere, but any exhaust leak will be RPM-dependent in addition to being load-dependent; a turbo problem will show up much more promenantly when you're boosting.

Sounds like you've got to replace the turbo. Rebuild kits for BB turbos basically replace the whole turbo anyway (minus the housings, but who knows, your housings could be screwed too). Just lurk around till you can find another one for <$400.

So yeah, work on gettin that $400 in the mean time lol, or downgrade to a t25 for a bit.

sr20detconv · 12-19-2007, 07:41 PM

I just got my bb t28 rebuilt with new garrett components for 450$I think rebuilting it is still a good thing.350$ for a used one or 450$ for a brandnew one....

burnsauto · 12-19-2007, 07:51 PM

if you're strapped for cash, you can rebuild them yourself. i've done it...its not rocket science. just after you're done replacing the bushings in the center section..and you have the compressor wheel/turbine wheel/shaft back in place..send the complete center section out to get balanced.

you can take a scrawl, mark the positions on the wheel/locking nut, and just make sure they line up (ive done this..) but its better to get it balanced on a machine. turbo's spin at near super sonic speeds...lol

gpopshop.com <-thats a decent place to get rebuild kits. t25 and s14 t28's use the same dynamic seal rebuild kits. the kits come with two sizes of bearings, the t28's use the larger ones.

torque specs generally on the locking nut (on the compressor side) are ballparked (a snapped center shaft sucks, so dont overdo it.) general rule of thumb is to get the locking nut tight enough that it touches the compressor wheel, then after that tighten down 1/8th of a turn. it doesnt seem like much, but it holds it fine.

if you want...i have an OEM turbo rebuild kit i'd sell. just pm me if you're interested. (you cant get these kits in the US..)

12-19-2007, 03:55 AM	#2
GSXRJJordan Post Whore! Join Date: May 2006 Location: San Diego, CA Posts: 9,135 Trader Rating: (19) Rides Gallery: GSXRJJordan Feedback Score: 19 reviews	If revving the car in neutral doesn't re-create the sound, then you probably do have a bad turbo (only makes the sound on spool up). Reading through originally it sounded like you had a leak somewhere, but any exhaust leak will be RPM-dependent in addition to being load-dependent; a turbo problem will show up much more promenantly when you're boosting. Sounds like you've got to replace the turbo. Rebuild kits for BB turbos basically replace the whole turbo anyway (minus the housings, but who knows, your housings could be screwed too). Just lurk around till you can find another one for <$400. So yeah, work on gettin that $400 in the mean time lol, or downgrade to a t25 for a bit. __________________ Jordan Innovations has a new web site! www.JordanInnovations.com -- All your favorite FD Pro Drifters love it, trust me -- www.JordanInnovations.com

12-19-2007, 07:51 PM	#4
burnsauto Post Whore! Join Date: Dec 2006 Location: 717, PA Age: 39 Posts: 3,324 Trader Rating: (6) Rides Gallery: burnsauto Feedback Score: 6 reviews	if you're strapped for cash, you can rebuild them yourself. i've done it...its not rocket science. just after you're done replacing the bushings in the center section..and you have the compressor wheel/turbine wheel/shaft back in place..send the complete center section out to get balanced. you can take a scrawl, mark the positions on the wheel/locking nut, and just make sure they line up (ive done this..) but its better to get it balanced on a machine. turbo's spin at near super sonic speeds...lol gpopshop.com <-thats a decent place to get rebuild kits. t25 and s14 t28's use the same dynamic seal rebuild kits. the kits come with two sizes of bearings, the t28's use the larger ones. torque specs generally on the locking nut (on the compressor side) are ballparked (a snapped center shaft sucks, so dont overdo it.) general rule of thumb is to get the locking nut tight enough that it touches the compressor wheel, then after that tighten down 1/8th of a turn. it doesnt seem like much, but it holds it fine. if you want...i have an OEM turbo rebuild kit i'd sell. just pm me if you're interested. (you cant get these kits in the US..) __________________

12-19-2007, 01:01 AM	#1
nicku Zilvia Junkie Join Date: Aug 2007 Location: St. Cloud, MN Age: 40 Posts: 545 Trader Rating: (0) Feedback Score: 0 reviews	I have a HKS GT2510 for sale. But you will have to either open up the wastegate since it was welded by the previous owner or you go with external wastegate setup. I have seen people open up the welded wastegate, and you just have to flat the surface, thats it. the turbo is in a great condition. I can send you some pictures if you want. pm me

12-19-2007, 07:41 PM	#3
sr20detconv Zilvia Member Join Date: Nov 2006 Location: Quebec Age: 36 Posts: 176 Trader Rating: (0) Feedback Score: 0 reviews	I just got my bb t28 rebuilt with new garrett components for 450$I think rebuilting it is still a good thing.350$ for a used one or 450$ for a brandnew one....