Hypergear Turbochargers and High flow Services Development thread

[Rolls]

Yeah I mean good on him for being cautious if he isn't familiar, but you can tell him that hundreds of people have done it safely, just avoid detonation, keep it cool and it will be fine. A good intercooler is extremely important for higher running boost safely.

[jet_r31]

before boosting the f**k out of it, i'd compression test a motor to get a idea on its health, but thats just me , plenty have boosted the f**k out of them, just as many have blown the bottom ends out of them.....

cheers

darren

[Rolls]

almost always due to bad tuning

[GTScotT]

bad tuning good tuning whatever, darren is right a sloppy motor will let go once you lean on it

boost is just the indicator for how hard you are leaning on it in this case

[GTScotT]

and Ron, i believe the difference between a 255kw and 279kw SS1PU would be fairly small.. minor difference at the end of the strip and mostly the same for the first 150kph.

i also think a SS1PU at 255kw will blitz a G3 at 270. Kapish?

please take some interest in and do some reading on the HKS GTRS... see what people think of the staple 250kw turbo. my understanding is that it comes on that early and snappy that acceleration will eat the 300kw setups pre 200kph

[jet_r31]

almost always due to bad tuning

I think people are forgetting how many kms are on these motors now...I will give you a example..I have been a member on supraforums for 13yrs, I look every week , stock bottom end started of taking 600 rwhp with 66mm setups, then they went 72mm, 74mm 76m Q trims and the numbers went up, then 42's with 74, 76 S trims etc, 900rwhp no blowups. But in th last couple of yrs the the average for a stock bottom end has been drastically lowered as they are starting to put on reasonable mileage, and aren't as strong anymore..or it could be people have just started bad tuning now.....

Its only the one owner never driven ones, REALLY low mileage that people are getting hold of , compety stock standard and then going large in the setup and making ridiclious numbers still.

Fark loads have taking a dump And the average Rb25 had 15 times the mileage these things have on them..plus a lot of people ideas of maintenance are different, theres so many shitbox skylines around that aren;t looked after its not funny, i woudn't recommend giving one of them 20+psi.. without a comp test.

Unless your idea of a good saturday is removing a smelly old ringland busted Rb25.

cheers

darren

[hypergear]

^^

Above turbo were made for a VW 4S dealer in China. Got some feedbacks from them today. This turbo was fitted to a 01 Model 1.8LT Auto Bora. They were measuring 0~100 acceleration using D-box.

The 0~100KM acceleration time from a factory was 10.5 sec

ATR28G1 high flowed turbo and every thing else factory, the 0~100KM acceleration time was 9.4 sec with plenty of wheel spin.

Its pretty interesting that we are compares RPM vs Power vs Boost, probably due to lack of skilled modifier and tuners, all they are interested is in 0~100km acceleration time. How ever that was a pretty good start.

[Harey]

Its pretty interesting that we are compares RPM vs Power vs Boost, probably due to lack of skilled modifier and tuners, all they are interested is in 0~100km acceleration time. How ever that was a pretty good start.

Well it sounds like they didnt get the ecu tuned to suit and if I didnt have to get the ecu tuned I wouldnt get a dyno done either. It is interesting though as for a street car 0-100 should be very important. I know some people were discussing times a while back.

Wheelspin for a 9.4 second 0-100??? Its a good improvement from 10.5 especially with so little changes but its hardly fast lol

[Bond]

I can't believe a stock turbo would be so slow!! 10.5 is CRAP.

[rondofj]

I always thought a granny spec corolla does 0-100 in around 9-10 secs, correct me if wrong? And quarter in around 17-18

[copycutter]

I can't see how that is wheelspinning for a 9.5 unless he's leaving his foot flat on the accelerator when he changes gears :S

[wolverine]

i woudn't recommend giving one of them 20+psi.. without a comp test.

Unless your idea of a good saturday is removing a smelly old ringland busted Rb25.

By all means compression test the engine before modifying any car.

I am curious what difference you think running 18psi vs 21psi will make. If the car is kept away from det how is the ringland going to fail?

12psi with det will fubar it as easily as 18psi.

[GTScotT]

I believe hes more or less using the boost as a relative reference to how hard its tune.

[SargeRX8]

After a comp test, what is a good level of compression to be running high boost on these motors? My motor tested at 155 - 160 on all cylinders, I run 17psi through it and 20 as high boost.

[Rolls]

155 means it is in great condition

[RandomHero83]

The head gasket comment by the tuner is rubbish, the standard nissan head gasket has been proven to huge power with aftermarket engine builds. Lots of tuners prefer them over aftermarktet metal ones.

I understand if your tuner is worried about the standard engine overall. Does he have much experience with skylines? A lot of tuners that dont are hesitant to boost it too high as they are not aware of how strong they are.

Give it hell as it is for a few months and then take it back and demand the boost be raised

His big thing was that he hasn't had any positive experiences come from running more boost than that on an RB ( fear of doing a ring or another adverse problem i don't know about), The plan is to drive it around like it is now (340hp atw) and then when i do my 100k service in 9000k's time I'll retune for 20 psi.

Edited January 15, 2012 by RandomHero83

[SargeRX8]

His big thing was that he hasn't had any positive experiences come from running more boost than that on an RB ( fear of doing a ring or another adverse problem i don't know about), The plan is to drive it around like it is now (340hp atw) and then when i do my 100k service in 9000k's time I'll retune for 20 psi.

Silly move. I done my 100k service 10kkm before it. Pay for tune, major service, then pay for tune again...

[Hanaldo]

155 means it is in great condition

What about 180?? I comp tested my motor a few months ago and got between 180-182 across all six. It's higher than any other result I've seen on here... Was worried about possibly carbon build up increasing the compression?

[Rolls]

Varies depending on a lot of factors, as long as its consistent it doesn't really matter, I would only worry if it read really low like 100, even then I had an rb20 that consistently read 110 across all six, burnt a tiny bit of oil but wasn't down on power at all.

[LANDSCRIBBLE]

I got between 140-155 psi across my 6 late last year