whats the best turbo upgrade on a budget

[rb20s14]

alright i have a s14 with an rb20 and i want to get a better turbo on a budget to keep from have'n problems later and may turn the boost up a little and i need help

[Cameron]

either mine, stock RB25 turbo with exhaust elbow for 250, or my Holset WH1C.

[Cracka Matt]

whats the budget btw? that helps when suggesting things

[rb20s14]

like two or three hundred

[Joe]

save more money

budget like that + turbo = boom

[Cameron]

not necessarily, Holset is a very good option.. pick a hx35 up for $200+$50 rebuild= 250= great turbo that can handle abuse like mad..

Garrett isnt always the answer.. you take a garrett and Throw the surge that some of the cummins through at theres and you tell me which last longer.. even though surge is bad, ive read they can take a ton and keep on truckin, but do what you can to keep it out of surge lol.. Surge is no good haha..

plus the prices of the holsets is unbeatable. another option are borg warner, switzer turbo, KKK Turbo (not ku klux klan lol. they are another german Company) and even the stock powerstroke turbo's, not sure of the brand.

But all of these brands can be found on ebay for fairly cheap, the main thing is make sure there was no internal scoring on the compressor wheel and housing, or else that will set you back a good 2-300 more dollars..

and be sure to ask questions if you go this route on ebay, and dont end up like me thinking you were getting a HX35/40 when i Really got a WH1C lol...

good luck with your search!

[rb20s14]

does the holset bolt to my manifold and dump pipe?

[rb20s14]

and the $250 turbo you were talkin about will it work or will i have to do any modifing?

[Cameron]

yes a hx35 should im not 100% positive on stock manifold clearance, and you can also buy a Bullseye housing for around 150, which gets rid of the big holset exhaust housings and drops down from a 14-16 cm^2 (equivalent to like 1.00+ AR) to like a 7cm^2 housing which is like .49 AR. only thing is you would have to get a dsm 4 bolt dump pipe or make your own 4 bolt style dump pipe, but it is well worth it..

[rb20s14]

does the rb25 turbo have ceramic fins to?

[Cameron]

and the $250 turbo you were talkin about will it work or will i have to do any modifing?

The HX35 is made by holset, i am 100% positive it would bolt on to the manifold, as it is a T3 turbo, i am just not sure about if the comp housing would clear the manifold. check these 3 threads and it might give you an answer, i think some one in them said it would..

(one of them is mine, i thought i was getting a HX35/40 when i really got the Predecessor to the HX35.... the WH1C )

My thread: zerothread?id=299826

Great info thread: zerothread?id=296083

One for sale: zerothread?id=299069

Hope i helped

[Joe]

yes the 25 turbo has a ceramic exhaust wheel

[Cameron]

does the rb25 turbo have ceramic fins to?

unfortunatley yes...

[Cameron]

yes the 25 turbo has a ceramic exhaust wheel

and diesel turbos dont belong on gas engines, im sorry. budget or not.

LOL Why not, a turbo is a turbo ask Cjmartz2k hes running a HX35/40 on his RB25 right now and loves it, quick spool and great power.

he prolly will be in here later recommending holset as well...

and to each his own..

EDIT: Just reread that info thread, and yes it will, nothing a spacer cant fix.

[Joe]

i deleted that part of my post because i dont know enough about the holset turbo to argue that so generically.

GENERALLY diesel turbos are not great on gas engines. they are designed for way different amounts of boost (MUCH higher) and a completely different style of engine. sure they might "work" but you are WELL outside of the compressors efficiency range and arent getting a proper amount of boosted clean air into the engine.

im a big advocate of doing it right the first time, or not doing it at all.

[Cameron]

good thing a hx35's efficiency range is right dab in the middle of what any rb owner would want out of a turbo, here is a Map.

and there are sooooooooooooooooooooooooooo many+11tybillion different people from bimmers all the way to hondas using these holset turbos that would give a right to argue why not, and that is the whole point, yes these turbo's are built to see 40 psi on a daily basis, and it wont hurt it, but the beauty of it is, is that that tells you the durability is there to handle the boost, but also, it dont take that much to get what you want out of it...

and doing it right? whats wrong about it?

[Cameron]

18-20 psi is ideal for a HX35 after looking at the compressor map i would say.HX35's are good for like 245hp at 3000rpms, not 6500, so they would prolly be good for about double that on our engines. and with that, you would prolly be in the High 300's to 400's guessing at around 20psi , but with extra air comes injectors, you would prolly want to upgrade injectors to be in the HX35's efficiency range, because of the higher boost pressure..

well thats a given cause with more power comes higher fueling, so i would say get you some 640cc's and you would be set.

but how much power are you looking for?

EDIT: I see your down in Douglasville, if you ever need any help im just up in Buford. you should prolly also check out http://www.240atlanta.com if you havent already, some good stuff on there too.
Modified by ZenkiCam at 1:59 AM 1/2/2008

[rb20s14]

yeah the only thing is im needing to get an afc as well and i was thinking of like 12 or 14lbs at most for now to be safe with my injectors and spend alot of time tunning

[Cameron]

Tell me how much power you are looking for

[Cjmartz2k]

Yeah, they like boost, but mine still makes about or a little more power than my TO4e did at 1.1bar. With WAY better spool too. I strongly recommend them.

One question though, is $300 your budget for just the turbo, or for your whole build? If the later, I would suggest you research this hobby more before you start trying to spend money. Supporting mods, tune, and install will cost a lot more than the turbo will. BTW, you are not going to find a turbo for cheap that bolts up to to the stock downpipe for cheap.

[Cameron]

yea i just did a calculation saying you wanted about 400hp out of it at around a pressure ratio 2.2 or around 16 psi ( i say 2.2 is around 16psi cause since we are not at sea level the pressure is atmospheric pressure is no longer 14.7 but a bit lower, so thats how i got 2.2 P/R, because at sea leve 16 psi would be about 2.0 p/r) , and i figured you would still be in the turbos efficiency range and at around 350whp maybe.

[StricNyne]

meh holset seems awesome just not newb friendly in his case seems he needs something direct bolt on

[s14 2510's]

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.

[StricNyne]

meh its like a 20 year old turbo though... like kamin said i would just save up more money, or maybe do a DIFF upgrade, better exh, something thats cheaper if that 200 is burning a hole that badly in your pocket because

[Carl H]

turbo upgrade on the 20 also means new injectors and a remapped ecu at the minimum, then once you hit 320hp the maf goes and you'll need a z32.

[rb20s14]

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

[Cameron]

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..

[jsack]

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..

i had my stock rb25 turbo rebuilt and modified i was making just over 350 with it and i could have gotten even more out of it.it is for sale now couse i upgraded to a garret t-61

[rb20s14]

how much do you want for it and where can iget a safc for a decent price

[jsack]

i would take what i paid for the rebuild kit wich is 350 plus shipping