whats the best turbo upgrade on a budget

Discuss the RB20, RB25 and RB26 series engines.
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Cameron
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wait a minute when you say modified do you mean like what i suggested you could do?


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jt15833
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ZENKI CAMany idea where to get a map for hx25?

how you think it would do on a ca18? i wouldnt want to run more than 15-16 psi even tho i have injectors and tunable ecu and all goodies but stock internals. new hg tho =)

sorry to thread jack.

jsack
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ZenkiCam wrote:wait a minute when you say modified do you mean like what i suggested you could do?
if you are talking to me then yes the parts cost me 350 and the labor was another 300 it has new bearings and modified compressor wheels and probobly a few other things.they say it can handle 450 plus but i can not verify that as i only was running 19 psi so i dont know.

rb20s14
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yeah i mean hell im no stranger to a welder and even though im new on here dosen't mean its the first thing i have ever worked on

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Cameron
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jt15833 wrote:ZENKI CAMany idea where to get a map for hx25?

how you think it would do on a ca18? i wouldnt want to run more than 15-16 psi even tho i have injectors and tunable ecu and all goodies but stock internals. new hg tho =)

sorry to thread jack.
i would prolly say the HX25 would be perfect on a CA, i searched google and found that it is capable of around 74 lbs/min

Holset:HX25 (Maximum Output) Airflow 74.07 lb/min (That seams a bit much for that little turbo though )

thats a good bit for that little turbo, id say go for it, that one dude has one in classifieds if you saw it.

only thing is the flange isnt a true T3..

ryan15
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jsack wrote:i would take what i paid for the rebuild kit wich is 350 plus shipping
Send me pics to [email protected], and might have a deal

Cracka Matt
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Car: 89 240sx RB20det powered, 84 300zx AE turbo

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s14 2510’s wrote:What about a z31 turbo from a older single turbo 300zx. Are they ceramic finned too? That might not be a bad upgrade. But ive never owned one just read about them long time ago.
thats what i have but its been rebuilt, balanced with new wheels, etc to be on the safe side. but the only reason i run it is because my t25 crapped out on me, and the engine for my z31 isnt done yet so yeah..lol

jrb92se
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did you just read the stupid street article about the ka-t with a holset turbo that came out two years ago or ARE YOU JUST TRYIN TO SELL YOUR OLD TURBO?

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jt15833
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ZenkiCam wrote:
Holset:HX25 (Maximum Output) Airflow 74.07 lb/min (That seams a bit much for that little turbo though )

only thing is the flange isnt a true T3..
I saw that number too on a forum but it has to be wrong. Holset's site says .23 kg/s which is ~30 lb/min. I used an airflow calculator and it said my engine should flow around 30 lb/min at 7500 rpm with a PR of 2 so I guess thats a good match? Its something little to go off of but what else can you do w/o a compressor map?

Also I was hoping the flange would be t25 so it would bolt up to my CA18 manifold, is it not?


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BoostFab
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ZenkiCam wrote:
i would prolly say the HX25 would be perfect on a CA, i searched google and found that it is capable of around 74 lbs/min

Holset:HX25 (Maximum Output) Airflow 74.07 lb/min (That seams a bit much for that little turbo though )

thats a good bit for that little turbo, id say go for it, that one dude has one in classifieds if you saw it.

only thing is the flange isnt a true T3..
no way in he11 that information is correct. so you're saying a tiny hx25 flow more than a 60-1 turbo, which flows at 61 lb/min. lots of time information found on google are also wrong.

FACTS: as jt15833 also mentioned: the hx25 flow at 0.23 kg/s which equals: 30.4 lb/m


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rb240det
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rb20s14 wrote:how much do you want for it and where can iget a safc for a decent price


bleh to the safc...I tried the same when I upgraded my turbo and injectors. Trying to do a full tune with it was a joke. I would suggest getting it chip tuned to accomodate for the turbo and injectors, then use the safc to tweak should you be set on getting one. I saw much bigger gains after having my ECU chipped.

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Gold Digger
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rb20s14 wrote:well i have a full 3 inch exhaust and i thought about getting an safc and tunning the hell out of it but the only problems is i need a turbo the i dont have to worry about at 15psibut the problem with that is that i cant find a decent afc for a good price and im only looking for like 250-265 to the wheels

Modified by rb20s14 at 6:05 PM 1/2/2008
Dude, you can do that on a stock turbo, EASILY...lemme show you.

My set up.

1990 RB20DET in a Nissan LaurelMods to date.

Blitz cheap *** air filterNight-Pager open wastegate dumpKTM split front pipeJazmo 3.25" cat backHKS EVC 1 set at .9bar (Approx 13psi-ish)--Usually hits about .85 unless at really high RPM's

I hit 240ps on the dyno 6 months ago, which is about 230-235hp. Throw a front mount on top of what I got, up the boost a little bit, good set of plugs, and I bet I could get well close to 250ps.

Oh, yeah. All my parts on my RB, with the exception of my air filter, were bought used.

Cjmartz2k
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C33LaurelRacer wrote:
Dude, you can do that on a stock turbo, EASILY...lemme show you.

My set up.

1990 RB20DET in a Nissan LaurelMods to date.

Blitz cheap *** air filterNight-Pager open wastegate dumpKTM split front pipeJazmo 3.25" cat backHKS EVC 1 set at .9bar (Approx 13psi-ish)--Usually hits about .85 unless at really high RPM's

I hit 240ps on the dyno 6 months ago, which is about 230-235hp. Throw a front mount on top of what I got, up the boost a little bit, good set of plugs, and I bet I could get well close to 250ps.

Oh, yeah. All my parts on my RB, with the exception of my air filter, were bought used.
Yes, but keep in mind two things. That was the guestimate at FLYWHEEL horsepower (please, correct me if I am wrong) and this is an Autobacs dyno, which isn't exactly known for it's accuracy.

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Gold Digger
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Cjmartz2k wrote:
Yes, but keep in mind two things. That was the guestimate at FLYWHEEL horsepower (please, correct me if I am wrong) and this is an Autobacs dyno, which isn't exactly known for it's accuracy.
No, so keep in mind these three things. That was a guestimate at the WHEELS. The flywheel guestimate was 263ps. And, having a guestimate at an Autobacs dyno, is better than not having anything at all.

silviasgp06
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jsack

im interested in this turbo you have as well, wont be able to buy it for a while but i was wondering if you might have a reciept from the shop you had it rebuilt by with part numbers. Im assuming that the turbo is now rebuildable?

jsack
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i can look to try and find it with the million other reciepts i have for my car.it is rebiuldable,but you wont need it rebuilt it only has maybe 400 miles on it.the reciept does not have the part #'s on it

BlAcK95sE
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ZenkiCam wrote:well then you just need oem turbo.. no need to spend 1000 dollars on a small t3 turbo like that one dude did, that was prolly the biggest waste of money he could have done.. i believe it was a little GT2510 thats only good for 300...

ive heard about people switching out the stock RB ceramic wheels to steel ones, i cant remember where i read it at.. prolly cant even be done.. just dont know the difficultly of it.. prolly really hard, but then you would have a good solid turbo for a good amount of HP.. if you are just looking for that much, then i would either go OEM RB25, or raise your goals to something higher..
yep a gt2510. its the best thing i could have done with the situation i was in. im guessing you didnt take much time to read anything i wrote. for $1000 my car is far more depenedable the what it was with a stock turbo. sorry my setup isnt what you want it to be.

why dont you tell me how to make my car as dependable as it is now. for $1000 or less, insted of talking **** about my setup.

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Cameron
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Sowweee


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