R34 Turbocharger info

[Brett_J]

Ok have read a lot of conflicting info on these things.
Ceramic exhaust wheels and plastic compressor wheel, Ball bearing or non ball bearing
How much boost can they safely handle, some say 12 some say 14psi
Will be replacing a stock RB20 turbo as a small upgrade.
Average power expectation out of RB20 with 3" exhaust, FMIC and SAFC ?

So whats the deal?

[magic1]

Ceramic and plastic. age is the killer. 12psi & BB

[Jazza]

If its a series one turbo don't go over 14psi with it, although that's really rated on an rb25 which will have more flow at the same psi as a rb20 so you MIGHT be ok to go alittle higher but you'll get SFA more out of it so I don't see the point. Expect about a 20-30hp increase over the standard rb20 turbo, honestly it won't make a massive difference but enough to notice it.

[Brett_J]

Cheers
Yeah have one lined up cheap thats in good nick, wont be a powerhouse, just for a daily that will be given a squirt every now and then, but don't want to flog the standard turbo to do it,it's running at around 15-16psi, which Im certain is pushing it.
20-30 hp gain is plenty for the cost really.
Thanks again :)

[Lump]

Average power expectation out of RB20 with 3" exhaust, FMIC and SAFC ?


mine did 250hp atw on hypers dyno with those mods/boost

[confuzion]

About ~Burnout PSI

[Brett_J]

About ~Burnout PSI

Showcase burnout pics not loading.........

[SimonR32]

If you can go a R33 turbo over a R34 Neo one... The neo ones have biggest exhaust A/R's and are a fair bit more laggy but only make a tad more top end power!

Run 1 bar, it might die eventually but who cares :)

[Brett_J]

Answer my PM you faggot.

[Lonewolf]

do it, great turbo for what you want
200-250whp depending on how hard you push it

edit: r33 one will spool better and make similar power than the r34 one

[kurbn]

Expect 230-250 max at 1bar with what ever 45V series turbo you put on, Ive trialed most of the turbos now on 20's

45V1 is the most responsive ive driven, from memory exhaust housing is the same inc wheel size as a 16V but the compressor wheel is larger
45V3 has a larger exhaust wheel and from memory the same compressor wheel size as the 45V1, feels like it has a bit more up top but its a little laggier than the 45v1
45V3 with the OP6 rear housing is a peice of shit on an RB20, very very very laggy.

on an RB20 14psi is really the ideal safe limit for a 45V series turbo, really only because of the heat vs ceramic exhaust wheel. 25's for a safe limit is 12psi, they run hotter gasses than the 20's so you can up the boost more over the 25. I have ran 16psi on a 45 before and they start to squeel over time when cold. Anything more than 14psi and they run out of their efficency range anyway.

Run either a 45V1 or V3 non OP6 type imo. I would still lean more to a V1 tho due to being more responsive.

P.S buy a secondhand nistune ecu. Just about the same price as a AFC these days. You wont gain THAT much power going nistune tho, just more of a safer tune. Also be sure to remove your cat (for race purposes) and upgrade the dump pipe to make the most out of it. Good bang for buck mod.

[Lump]

http://i148.photobucket.com/albums/s6/andyevo/dyno2.jpg

[Brett_J]

Cheers kurbn, dump is after market and front pipe is soon to be upgraded, already has safc installed, just need to sort fuel hesitation issue, after checking pump voltage I suspect it's that, around 11 volts Max, going to run new wiring to see if that fixes it.