Dirty 25 Ideas Based On Oe Block Rods And Headz .

[Manuel Kasko]

Haha well 250kw kept me entertained for nearly 2 years so hopefully 300kw will keep me happy for a further few years. It will be interesting to see how much difference there is between the two. Although it's comparing a RB25 with over 200K on it to a newly imported RB25NEO with less than 100K

I remember leaving jez's workshop at 11:00pm on a Sunday night and giving the car 50% throttle because it felt insane to drive.

The plus side is that I recently moved into a place with a caltex servo 2min away. So E70 will be easily available.

[discopotato03]

Well my opinion is that many people grab components that are overkill for their goals . And while it can add a degree of future proofing if the future isn't 350 plus RWKW then any downsides were all for squat . I see sub systems built for sub systems and all I can think is - why ?

Here's a good one , "want 300 on E85 and have to have that 20a draw alky pump" . Custom fits custom wiring bling reg cause OE can't cope , fuel get hot tanks pressurising bla bla bla . Or just buy the known drop in that works with everything OE . Boringly simple for probably same money .

If it were me in a GTt and it never left the metro area I'd take a punt on that GTX3067R , for something that nearly bolts on it should have better transients and spool than any other GT30 IW turbo from Garrett . Again the burning question is how far up the rev range do you need to go and still have it hammering .

A lot of this comes back to how much you want to spend on gear and how well that's proportioned to your goal . If that goal ended up being 280-300 then all the bling expensive 400 Kw gear was for shit and doesn't very often make the result any better .

Lastly the return flow Blitz , for a Japanese kit its affordable easy to fit and about a legal as it gets in the eyes of the sharks . Paint it matt black and with the lid up you virtually can't tell its there . Provided they work like or dislike is irrelevant as far as the engines concerned . Personally I like having an engine bay that looks factory even if the crossover pipe is a PITA to work around . Not hard to remove .

One quirk I have is that I like to get the most from the least because the era I grew up in and the trade I did back in the 80s .

A .

[Manuel Kasko]

What are your thoughts on hypergears SS1PU? I was chatting to stao and he said mine is an older model but his new model has better boost control and can make more power.

Stao was saying that this would provide a nice snappy 300kw on E85.

I managed to pick up a brand new adaptronic for only $800 so that's the ECU I will be using.

[owen1r]

Well my opinion is that many people grab components that are overkill for their goals . And while it can add a degree of future proofing if the future isn't 350 plus RWKW then any downsides were all for squat . I see sub systems built for sub systems and all I can think is - why ?

Here's a good one , "want 300 on E85 and have to have that 20a draw alky pump" . Custom fits custom wiring bling reg cause OE can't cope , fuel get hot tanks pressurising bla bla bla . Or just buy the known drop in that works with everything OE . Boringly simple for probably same money .

If it were me in a GTt and it never left the metro area I'd take a punt on that GTX3067R , for something that nearly bolts on it should have better transients and spool than any other GT30 IW turbo from Garrett . Again the burning question is how far up the rev range do you need to go and still have it hammering .

A lot of this comes back to how much you want to spend on gear and how well that's proportioned to your goal . If that goal ended up being 280-300 then all the bling expensive 400 Kw gear was for shit and doesn't very often make the result any better .

Lastly the return flow Blitz , for a Japanese kit its affordable easy to fit and about a legal as it gets in the eyes of the sharks . Paint it matt black and with the lid up you virtually can't tell its there . Provided they work like or dislike is irrelevant as far as the engines concerned . Personally I like having an engine bay that looks factory even if the crossover pipe is a PITA to work around . Not hard to remove .

One quirk I have is that I like to get the most from the least because the era I grew up in and the trade I did back in the 80s .

A .

I'm yet to see results with the GTX3067, is there some that you know of? I would think that the GTX3071 would be more suited to 300kw on P98..

[Mick_o]

I'm yet to see results with the GTX3067, is there some that you know of? I would think that the GTX3071 would be more suited to 300kw on P98..

A GTX3071R wont go 300kw on petrol unfortunately I went 288kw

[Lithium]

^ depends on dyno and the rest of the setup - but given this seems to be "simplest setups" I agree, and also lean towards the feeling that an "honest" (ie, a realistically safe tune on Dyno Dynamics dynos without an external wastegate, no crazy loud exhaust and stock manifolds etc) 300rwkw low mount turbo in general on BP98 is probably a bit of a tall ask. It's even doing OK to go much over 300kw on a hub dyno with that kind of setup, imho.

In that respect, I lean towards the idea of the GTX3067R-GTX3071R range being not a bad option for a just basic boltons car which is fast, usable and reliable

[Manuel Kasko]

A GTX3071R wont go 300kw on petrol unfortunately I went 288kw

I tried to find you graph but couldn't. Any chance you could post it up in here? Also are you planning on going e85?

[Lithium]

^ depends on dyno and the rest of the setup - but given this seems to be "simplest setups" I agree, and also lean towards the feeling that an "honest" (ie, a realistically safe tune on Dyno Dynamics dynos without an external wastegate, no crazy loud exhaust and stock manifolds etc) 300rwkw low mount turbo in general on BP98 is probably a bit of a tall ask. It's even doing OK to go much over 300kw on a hub dyno with that kind of setup, imho.

In that respect, I lean towards the idea of the GTX3067R-GTX3071R range being not a bad option for a just basic boltons car which is fast, usable and reliable

BTW - this relies partly on the guy going GTX3067R having results that I suspect it is capable of.

I tried to find you graph but couldn't. Any chance you could post it up in here? Also are you planning on going e85?

He did go E85. Took me about 30seconds to find this : http://www.skylinesaustralia.com/forums/topic/55845-rb25-turbo-upgrade-all-dyno-results/page-39#entry6095846

[Manuel Kasko]

He did go E85. Took me about 30seconds to find this : http://www.skylinesaustralia.com/forums/topic/55845-rb25-turbo-upgrade-all-dyno-results/page-39#entry6095846

Haha thanks mate

[discopotato03]

If I was in Melbourne I'd likely experiment with Hypergears turbos but Sydney is a bit too far to rock up for adjustments . Wish they were in Sydney actually .

Can't honestly say I've had any experience with their turbos but if I did they'd have ball bearing centre sections .

On fuel - ethanol is good stuff but I find the light load bottom rev stuff more snappy with higher petrol percentages . Consumption , for me is totally unacceptable with E70 and I can't see E85 being any better . Better injectors like EV14s could change this but I don't have them yet .

Best case for me would be E42 from the pump but no one sells that so I splash blend my own . Simple , 50 50 E85 and 98 ULP . So I can't screw it up I have black jerries and red ones and religiously put 20L in the big ones and 10 in the small ones . One of black and one of red and I get a consistent mix .

Yes it means screwing around with containers but your not doing it every day and can buy at the bottom of the price curve .

A .

[Lithium]

On fuel - ethanol is good stuff but I find the light load bottom rev stuff more snappy with higher petrol percentages

Not sure what you are doing wrong here, but that certainly isn't what I am finding... It is the same or better the more ethanol there is

[Piggaz]

Not sure what you are doing wrong here, but that certainly isn't what I am finding... It is the same or better the more ethanol there is

I agree!

[discopotato03]

Could be injectors or the way the petrol is vaporising , tried various AFRs and timing and it just works better for me .

A .

[Mick_o]

Also agree! Ethanol is night and day from idle to redline and my fuel consumption has always been very respectable too. Couple of months ago I done 380+km outta a tank in the evo and I was somewhere in between quarter of a tank and empty. Reckon I coulda done a smidge over 400km. Which is about 30km less than the best tank I got on 98 when the car was 100% stock... Evo tank is only around 50L which I thought was quite impressive

[discopotato03]

Evo 9s had the biggest tank and trust me 6s aren't real big .

I lose idle mixture control at about E20-25 and I found that with both the PFC and the Vipec it prefers a higher ratio of petrol than ethanol .

I fully expect to see improvements with EV14s and unless I can find a short OE version around 550-650cc Xspurt 740s will be the go .

I base this on the fact that Guilt Toys RB2530 got to about 360 RWKW before it ran out of fuel with Nismo 740 SF injectors and E85 . If I want enough fuel for say 300 740 Xspurts are more than enough . IDs are probably nice but local support points to Xspurts .

A .

[Piggaz]

I reckon that would be due to your injectors, Adrian. Injector quality changes everything in how it idles and low speed/low RPM stuff. For example, SARD 800's feel like they came from the Jurassic era compared to a set of ID 2000's.

[hypergear]

If I was in Melbourne I'd likely experiment with Hypergears turbos but Sydney is a bit too far to rock up for adjustments . Wish they were in Sydney actually .

Can't honestly say I've had any experience with their turbos but if I did they'd have ball bearing centre sections .

Just personal experiences fixing up BB cores and making my own.

One thing with this bearing system is the balls were pressed in and the raceway in the cartridge is grinded and polished. So the balls are always harder then the cartridge. 2ndly with lubrication, even the bearings are oiled, at high speed balls actually throw oil away from it self, Its more like it gets oiled at low shaft speed while not much at high speed it when needed most.

Under high boost with extended period of WOT, back pressure forces turbine wheel sitting against the bearing collar at high shaft speed, the raceway wears. Which bush bearing turbos has none of those problems.

Let me know if you wish to try, and I'm certain the latest SS2 will out perform any of the GTX3071 and 3076 mentioned.

[discopotato03]

Well I'm committed to using what I have atm but if I was down there I'd be wanting to aim for something in between the GTX3067 and GTX3071R .

If something along the lines of a TR30R hot side could be created I reckon that could be really good in bush or ball form .

A .

[hypergear]

The new SS2 is some thing that is slightly bigger then a GTX3071, but not I'm not sure if its performance wise is similar to a GTX3076. as the turbine end is larger then a Garrett item.

Compare to GTX3071, SS2's compressor is 1.5mm larger on the inducer and 3mms larger on exducer. The turbine end is 4mms larger on the inducer and 3mms larger on the exducer. The radius on the compressor is slightly conservative for low RPM efficiency, while turbine blade radius is more aggressive for better discharge. It has very effectively lowed the back pressure in side a turbine housing specially working internally gated. Accepted more timing, much better boost control, and made more power on lower boost level.

They can be built in either Bush bearing, Steel ball bearing, and Cage-less Silicon-nitrate ball bearings. Do drop in an email when time is for upgrading, and see what we can build.

[Manuel Kasko]

I'm probably going to stick with my SS1PU and see what sort of response and power it can make on E85