Jump to content
SAU Community

Recommended Posts

ok so as planed i booked the car in to make up a new intake pipe at sureflow and pick up a new dump pipe and clmap from otomoto.

so come friday morning im on my way to pick up the car, jump in and crank it over. the car starts but is only running on 3 cylinders! BAH!! so i thought ok plugs are flooded because car is running really rich so i take them out and clean them, remove all the fuel from all cylinders, crank her over and she is still missing! ended up having to go thru the elimination proccess

1.plugs

2.ignitor modual

3.coil packs

4.ecu

ect

all of the above were working fine...

i was out of options, the only other possible issue that came to mind was the second hand s15 injectors that i installed. so off came the plenume and the fuel rail! as i was removing the fuel rail 1 injector just started pooring out all over the engine like a tap!

so i removed all of the injectors from the rail and found that 4 out of the 6 seals were broken! ahh last thing i wanted on the day that the car was booked in for some work. so of i went down to nissan, picked up new seals and the injectors went back in. cranked her over and she started firing all cylinders. YAY!

was time to take her down to otomoto to pick up a new dump pipe and clamp and re-book a time with sureflow. on the way there in 4th gear on a hill we put her underload to test boost levels, only to find she hit 18psi !! oh !@#$ another issue.

so i picked up a 38mm external gate that is going to be welded on to the turbo housing.

the car is now apart, will be welding the wastegate next week.

yeah mate told you they have boost issues

not sure how ur 38mm is going to go but it SHOULD hold boost fine.

i went 50mm to be safe. u only gotta look at the size of the hole inside the housing its tiny and thats why it creeps lol

good luck with it! keep us updated

yeah mate told you they have boost issues

not sure how ur 38mm is going to go but it SHOULD hold boost fine.

i went 50mm to be safe. u only gotta look at the size of the hole inside the housing its tiny and thats why it creeps lol

good luck with it! keep us updated

yeah i had a feeling that was going to happen :wave:

where did you get yours done? how much?

:spank:

well im not from a city but a small town, i got my mech to do it, he didnt charge me much at all, pulled turbo off,welded up inside of turbo,welded all new gate on, and screamer pipe, and tuned it, cost stuff all lol very pleased

  • 4 weeks later...

ok the car is complete and we have the final results :P

and let me tell you it was a pain the back side to complete! after welding on the external gate and fixing boost issues I was only to find 50km later the turbo blew! BAH was that annoying since i've now pulled it off about 4 times!

anyways otomoto replaced it without question, failure was due to a faulty seal i guess it happens :down:

i completed the setup with new braided water lines, gaskets ect so the setup was now solid.

the car was installed with:

(stock rb25det)

kkr480

38mm external wastegate to atmosphere

kkr dump pipe

trust front pipe

fujitsubo exhaust

apexi power fc

splitfire coilpacks

iriway 7 plugs

z32 afm

s15 injectors

bosh 040 pump

hybrid fmic

hybrid ebc

paul at pulse racing did the tune, end result was 250rwkw on 17psi. the turbo performed really well until we took the boost past 15psi then we hit a massive flow issue. it made the same power on 15psi as it did on 17psi. boost started dropping of back down to 14psi and wouldn't want to go anymore which is really strange with an external gate...

main restriction was in the turbo housing and dump pipe. the otomoto dump pipe is just way to restrictive and just doesn't flow anywhere near enough. also inside the exhaust housing there was turbulence due to the internal gate being welded shut and creating a pocket with resulted in loss of power.

the end result however was impressive, 6000nm of torque and 250rwkw was plenty to play around with. if it wasn’t for the flow issues with the turbo design we should of come close to 270rwkw+ and that’s very impressive for a dodgy kkr.

so in the end it would of been probably cheaper to go with a nice garret due to all the setbacks the kkr gave us. but once again happy with the results and so is the owner :thumbsup:

cheers!

:cheers:

  • 2 weeks later...
so the moral of the story is dont buy kkr turbos

defiantly better off with a quality product such as garrett, trust or hks.

kkr is not all that bad but it’s a little laggy for the amount of power you get. i guess it’s as simple as "you get what you pay for" in this case.

if your on a really strict budget and you can get the internal waste gate to hold boost (it's probably impossible) then it’s ok for someone who just can’t afford a garrett.

in the end of it all the owner was happy and so was i.

cheers!

:(

nice write up.

does it feel strong to 7000rpm?

thanks mate.

it’s very strong all the way thru the rev range and rev limiter is at 7200rpm from 3rd gear onwards you really start to feel the top end power if you keep pushing it.

the car feels responsive and easy to drive, just a shame for the flow issue otherwise we could of seen some really nice power somewhere around 270rwkw+ the owner doesn’t want to spend more money to fix this issue.

:(

yeah thats a bit of a bummer.

i got same mods just a bigger 50mm ext gate, i control my boost from the gate spring, has 14psi spring and ive tighten it to hold bout 1.4bar 19psi in top gears.

im not sure on exact power figure as it kept slipping the tyres from camber on my mechs dyno but was around 320rwhp b4 the slipping,

my mates 33 with gt30 and all the goodies has 350rwhp on 14psi and we are pretty even if we have 100-200 rolls maybe even half a length infront...who knows

id love a gt35r though...make same power on 1 bar not 1.4

yeah thats a bit of a bummer.

i got same mods just a bigger 50mm ext gate, i control my boost from the gate spring, has 14psi spring and ive tighten it to hold bout 1.4bar 19psi in top gears.

im not sure on exact power figure as it kept slipping the tyres from camber on my mechs dyno but was around 320rwhp b4 the slipping,

my mates 33 with gt30 and all the goodies has 350rwhp on 14psi and we are pretty even if we have 100-200 rolls maybe even half a length infront...who knows

id love a gt35r though...make same power on 1 bar not 1.4

i bet it feels much nicer to drive with the gt30 in it? he would probably have you for response and off the lights.

and again 14psi is not that much strain on the good old rb25, why didn't he up the boost to around 16-17psi? would of got close to 300kw with the right setup.

i guess kkr is not bad for the price... :banana:

:(

i bet it feels much nicer to drive with the gt30 in it? he would probably have you for response and off the lights.

and again 14psi is not that much strain on the good old rb25, why didn't he up the boost to around 16-17psi? would of got close to 300kw with the right setup.

i guess kkr is not bad for the price... :banana:

:(

yeah man its very smooth power delivery and good response .63 exh .7 front cover..

he wants to eventually run 18psi but having boost creep issues with tial 38mm gate..not holding boost properly once he tries to wind some into it...

yeh kkr arent 2 bad for price...screamer pipe on 19psi sounds animal specially wen u jus pop limiter and makes a huge crack noise haha

yeah man its very smooth power delivery and good response .63 exh .7 front cover..

he wants to eventually run 18psi but having boost creep issues with tial 38mm gate..not holding boost properly once he tries to wind some into it...

yeh kkr arent 2 bad for price...screamer pipe on 19psi sounds animal specially wen u jus pop limiter and makes a huge crack noise haha

hmm thats strange, the 38mm should be just fine for that sort of application, i suggest looking at the ebc before anything els.

yeah the screamer is really nice, i set one up on this setup and it sounds awesome :(

:banana:

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Actually everyone on the roads was really well behaved. The only person that did any minor tailgating was a local hoon in a Turbo Focus. Unfortunately we weren't going the same way so there was no grand initial D touge battle. Lots of people pulled over and let me through. The amount of "Hey man nice car, omg skyline, nice 34 man woo" was suprising. Like really suprising. Like almost annoying. My partner was obviously surprised, she'd never seen anyone in the real world point out the car/like the car/want to chat about the car before, so to have like 3 people per day mention it was notable, I could finally say SEE? SOMEONE THINKS THEY'RE COOL. Everyone was also pretty suprised about the weather. Every day was dry and about ~13-14C. Mount Wellington had a sign that said they close the gates at 9pm and I was heading up there at about ~7:30. It was VERY apparent that conditions were getting significantly worse by the minute on the way up and down. The road on the mountain was terrible though, it's no driving road. I have various suspension related questions now. Luckily it was only about 20 minutes from where we were staying to the top of the mountain as said Google maps. We only had the 2 nights in Hobart. We went to the Farm Gate Market though which was really good - And went down to the Hastings Thermal springs/caves down there during the day. I'd definitely be up for going back again, so luckily there's a few more sights yet to see. Didn't get to do the west coast/queenstown/cradle mountain so this was supposed to be a 'scouting' trip anyway of sorts if I were to one day do/take part in/organize a more car-focused trip. As for the boat, it wasn't bad. Well it was bad, but not in the way you're thinking. We did the night trip which leaves at 6:45 (though you have to be there ~2 hours earlier) and arrives the next morning at about 6am. There is nothing to do on the ship. If you plan accordingly and bring a book/tablet/show to watch/charger you can just chill out, take some Travacalm and just sleep through it. The food there is an extremely basic buffet that costs $32 a plate, or $14 for a $3 pizza. The way back we had a travel kettle and a few different types of cup noodles and made our own tea/coffee in the room. This was a far superior way to do it. At the very least book one of the rooms with beds. I guess as we were in the off season we didn't have room mates. You get an option for rooms with 4 beds (2x bunks) or a room with just the two bottom beds. There's also some option for a deluxe queen bed but it's much pricer. We've been on sleeper trains in Asia before so we figured this is similar (and it was)
    • You just gotta be really, really, really clear and decisive with what you want your end product to be. 99% of people who want this conversion aren't "I want to run a 295 front tyre!" so they don't really need the widebody. They just want the OEM body to look a little less dumpy, so bonnet, bar, skirts job done with some camber, stretch, slam. It's when you want that, but then decide to pivot later you get big problems. See also if you're willing to get an all in one fibreglass bar, and you're willing to accept fibreglass problems like cracking the entire item on a driveway, instead of just a piece attached to the bottom, etc etc etc. Decide this all before buyin'.
    • After @Kinkstaah debacle, I'd never want to try and get it right 😛
    • The hood lines up with the fenders. The front bar doesn't perfectly line up with the fenders where the wheel arch is. You have to 'squeeze' the front bar 'in' as it wants to naturally flare out and be longer on the sides. There's a few threads where people notice this when they only swap a GTR style bumper and front bar. Unless you have genuine OEM items - you may be better served getting conversion kits. There are GTT bumpers to fit GTR hoods. There are GTR hoods (non genuine) to fit the GTT bracketry. MAY  
×
×
  • Create New...