yes, another "what turbo do i use thread" , what does "too small" do??
 

ok so im new on here and i cant seem to find the effects of a turbo being to small on an engine,
im going to be running a probe with a mazda klze jdm engine in it... thats 200hp and 165 tq. V6 too i might add...
obviously a rhb5 turbo or t25 is too small, but what does that mean?.. it will spin to fast and seize, or will a stock wastegate prevent that.. or does it mean it will just not produce boost, since im running 6 cyl and all does it mean that a rhb5 would only give me about 4 or 5 psi instead of 7?... and at lower rpms or what?...

if anything could someone please point me in the right direction of picking out a factory turbo that will produce about 7 psi on a stock internals.

Re: yes, another "what turbo do i use thread" , what does "too small" do??
 

when people say its too small is that it will spool VERY quickly and will be choked before you even hit your redline.

since you have a v6(or are getting one) are you gona do a TT setup? that would be the best thing to do imo, and the t25 should be good enough to satisfy you.

Re: yes, another "what turbo do i use thread" , what does "too small" do??
 

we just turboed my friends probe, with a klze swap using the stock manifold and a t-25, i was suprise at how decent the car moves with that small turbo, but still the turbo doesnt hold all the way throuhg, hes upgrading to a big 16g this month, ill try and get some pics.

Re: yes, another "what turbo do i use thread" , what does "too small" do??
 

i did think about a twin setup, but i really just want to go with a single...


how much boost did he get out of that?

Re: yes, another "what turbo do i use thread" , what does "too small" do??
 

You would get a LOT more information if you checked out the Forced Induction forum at http://forums.probetalk.com

Re: yes, another "what turbo do i use thread" , what does "too small" do??
 

it means the turbo is so small that it simply cannot flow enough air for the engine and at high RPM's the car will fall on its face...

Re: yes, another "what turbo do i use thread" , what does "too small" do??
 

i've checked out the f/i on probe talk,infact im on pt about everyday, but i couldnt find the answer to this on there... i dont really like probetalks search bar, its not narrow enough,

i've been non stop researching factory turbos for 2 days and i think i've decided to keep my eye open for a 1st gen dsm turbo, due to its slower spooling...and whatever factory intercooler i can get my hand on for the cheapest

Re: yes, another "what turbo do i use thread" , what does "too small" do??
 

the turbo was tired been on 2 setups before his and produced a whopping 4-5 psi, but it pulled pretty nice, Probably good for a low 14 second pass.

Re: yes, another "what turbo do i use thread" , what does "too small" do??
 

Would a MKIII Supra CT26 turbocharger be "ok" on a 2.5 V6?

Re: yes, another "what turbo do i use thread" , what does "too small" do??
 

I think the most common factory "big" turbo is a T3 63/60 off a thunderbird. I almost suggest that turbo for all cars ever made. lol
It'll be a hell of a lot easier to find the flanges, lines, ect.. for that one than the CT26.