33 Hi Flowed Vs Kkr430

[TonyStarks]

Hi all wouldnt mind a few other opinions on a turbo upgrade Ill be doing to my rb20.

atm its currently has:

stock internals.

fmic

walbro 255 pump

stock injectors

turbo back 3inch exhaust

33 trubo ( basically FUBAR, bent hose ).

z32 afm - yet to be installed.

hks shroom pod.

Basically weighing up between going for the hi flow or the low k's KKR. Ive heard alot of good and bad in regards to KKR's on rb20's, havent heard much on hi flowed 33 turbz.

Any help would be appreciated.

Cheers.

[l0WRB]

personally id choose the r33 hiflow turbo'd over a kkr turbo anyday, direct bolt up etc

kkr isn't the best choice, ive had a 480 before, made ok power, but was laggy and didnt really perform that well.. went garrett and never looked back

but hiflow > kkr anyday specially for rb20

[hypergear]

From more professional perspective. The KKR430 is abit of a mismatched turbo. Mainly due to:

Restrictive turbine housing and Restrictive turbine wheel working with 6CYC engines.

Comp flow capacity > turbine flow capacity.

In result not only its laggy for the HP range it is in. It also creates high exhaust manifold pressure that has negative affects on the reliability and life time of the actual turbo.

Also with the KKR's turbine housings the A/R stamp or the A/R description doesn't seems to be accurate. As a proper .82 turbine housing out performed a supposedly .69 KKR turbine housing with both HP and response using identical CHRA.

Wither with high flows a experienced turbo builders can build a balanced package that maximizes its flowing capacity while still meeting user’s desired driving ability with lot longer life expectancy.

[Guilt-Toy]

what power can you expect to get from a kkr430 at wheels on rb25 and kkr480 ?

[hypergear]

what power can you expect to get from a kkr430 at wheels on rb25 and kkr480 ?

I used to sale the KKR type of turbos back in 05 and 06, purchased from the same manufacture in China. I stopped doing that and developed my brand locally due to a lack of product reliability, support and performance. My judgment is only based from that period.

Well based on my Previous test the KKR430 maxed out on my fully built CA18det at 230rwkws. KKR480 with identical comp wheel and housing maxed out on the same engine at 261rwkws.

See what the problem is here. The comp wheel is too big for 430's turbine capacity while the KKR480 would be considered a more balanced setup.

How ever due to out dated wheel design the local engineered ATR28G4 has out performed the externally gated 480 in both response and power by extraordinary 55 rwkws (316rwkws)..

Dyno comparison:

Retired verion of TR44 (KKR480) on CA18det externally gated 24psi:

Current version of ATR28G4 on CA18det internally gated 24psi.

[geraus]

hmmmmmmmmmmmmmmmmmmmmmmmm

[geraus]

Well I got a hypergear highflow STD internals, PFC etc doing 240kws at 17psi and get fullboost at 3800 I'd recomend the highflow

[l0WRB]

what power can you expect to get from a kkr430 at wheels on rb25 and kkr480 ?

kkr430 on stock rb25 with 14psi + tune + stock injectors n removed afm i seen 300rwhp fullboost around 4000rpm

kkr480 on stock rb25 with 19psi + tune + injectors removed afm i seen 340rwhp fullboost around 4800rpm

run 115mph with kkr480 turbo at willowbank.. still had a little bit of top end.

just my experiences with them

[Duncan]

I guess you are not going to enjoy the lag from a simple turbo like kkr on an rb20, I think the 33 highflow is a better choice.

having said that, I run kkr480 on my rb30, it is perfect for what I need (cheap, spools very early, enough top end for the real world). Made 250awkw at 16psi before the standard injectors ran out of flow.

[sneki81]

you could also have a look at the disco potato.

i cant say from personal experience but i know of a couple of people that have been happy with them.

[TonyStarks]

Thanks for the advice. Ive had the heads up KKr's don't seem to like rb20's from what I have seen. Cheers for the help guys.