hi guys, im about to buy a used begi-s kit that has a busted chinese turbo. would you guys choose the chinese journal bearing gt2871 or a used s15 bb t28? currently have a td04, greddy emanage, 2.5 exhaust and 330cc injectors. plan is 8psi max.

 

Chinese 2871 sounds a bit overkill for 8psi. BB T28 sounds like it would be better for this PSI range. What are your plans for the car? Street/autox I'd do T28. Track toy? 2871.

but WTF do I know, I'm a supercharger guy.

 

OEM S15 bb turbo will not go wrong, it is effectively Garrett 2560

Chineses turbo depends on your luck. Some have great results while others failed badly. I have been these and done that.

Do a search in this forum and you will know why.

 

from reading up it seems the chinese ones are ok if they are journal bearing and have a restrictor. the car will see the occasional autoX which sadly aren't that common in Australia.

 

OEM Garrett vs shitty Chinese? Seems like a pretty easy choice to me.

 

Chinese is the logical choice of course

 

A brand new Chinese will be cheaper than a used garret. I vote for china.

 

then you want the t28.

 

You could always try: ISIS T25/T28 Replacement Turbo

The Nissan guys really seem to like them

 

Don't mean to jack this thread or anything but what are these chinese turbos I keep hearing about and what site can I use to look at them?

 

I think the above Isis qualifies as a churbo. Look up CXRacing on eBay, I think they sell them too. Do the research though, the flanges are NOT direct bolt-it for Garrett on some of the units

 

What year car? If it is a 1.6 I say 2554 or 2854 for low boost or what is it about what you have that you don't like?

 

Seen some good power come out of these.


OP S15 turbo had a S15 turbo on 7 psi was pretty fun nothing too crazy but it moved.

 

im using a td04-9b which is a very small turbo. it spools very late at 4000rpm so not the greatest for the street. used garrett turbos are pretty cheap with early model sr20 t28 going for the $200 mark. the td04 is also very restrictive at 5500rpm the engine sounds horrible.

 

Which gear are you talking about in relation to 4000 rpm spool? 1st?
Such a small turbo should spool at 2000 rpm in 3rd. There must be something amiss with your wastegate or blow/recirc valve?
IMO the td04-13t is a much better option than the 9b. Even at 7psi I have trouble with traction.

 

unfortunately the td04-9b came in the kit and the flanges are different so i cant upgrade to the 13 or 15 varients. its easier just going to the garrett turbos which is what i am doing with this begi-s kit im about to buy.

maybe there is something wrong with my current setup, it wont boost past 5-6psi no matter how i set the boost controller. I have no bov too. it builds up boost at 4000rpm no matter what gear im in.

 

My china turbo lasted less than 1000.. spend the money buy quality.

 

ive decided to rebuild the redtop sr20 t25g i've had lying around. the guy who was selling me the begi-s kit pulled out so i will make an adapter to mount the garrett to my td04 manifold.

 

I was unaware there were rebuild kits for the ball bearing Garrett turbos...

 

the red top sr20 t25g from the 180sx and s13 is journal bearing...i dont think they went to ball bearing till the very late s14 but definitely s15.