Your Opinion On What Turbo To Use

[joeyjoejoejuniorshabadoo]

Thanx disco... Ibwas waiting for your essay on this one... With all the name changes I wasn't sure if his turbo was compatible with a gtrs rebuild.

There is also te option of trying to find a second hand 2835 kit....Probably the widest of all powerband options available

[RIPae86]

+1 for discopotato

[rondofj]

Good write up disco potato, great insight, what is your take on Hypergear ATR43 turbos compared to GCG hiflows?? I'm aiming for a super responsive and very punchy low-down 270rwkw street GTT.. Or am I better off with 250rwkw?

[ARTZ]

can some clarify for me where this term "discopotato" came from..?

[GTScotT]

Based on disco's reply, if it is a 2530 then it will suit the GTRS rebuild. The rear housing should need no machining. In theory you could buy a GTRS CHRA and front cover and bolt it together with your rear housing.

ZOOM ZOOM.

Also, I agree with the above that the 2835 would have the broadest power band available for an unopened RB25.

GL

[GTScotT]

Good write up disco potato, great insight, what is your take on Hypergear ATR43 turbos compared to GCG hiflows?? I'm aiming for a super responsive and very punchy low-down 270rwkw street GTT.. Or am I better off with 250rwkw?

Hypergear has the price and customer service to back his product. There is more than enough results on this site to justify your decision for one if you wanted.. The GCG is simply overpriced IMHO. If you want punch, stick to 250kw. If you do decide to go a HG turbo get one of his SS items, the SS-2 could do 270kw (he has had it to over 300) yet it does cost more (till a lot less than a GCG). The SS-1 should get you atleast 240kw fairly easily and I think has topped 265.

can some clarify for me where this term "discopotato" came from..?

Its two things, one is the forum users name on here... The other is a nickname for the 2860RS turbo. In short, the GT2860RS was custom made to suit a drift car that had the name 'Disco Potato'. The outcome was so great that the turbo went into full production and carried the name of the car it was made for, Disco Potato.

They are a pretty cool turbo for a small 4 pot, not that special though lol. Best result I've had from one was on a CA18 (car whooped ass), worst was on an SR20 (car did not whoop ass). Best result I've seen from a disco was on a friends SR S13, which got pwn'd by my fairly standard Evo 4 (TD05H 16G 9cm for reference).

Hope that answers any real disco potato question you might have lol.

[discopotato03]

It was inspired by this article I came across purely by chance in a friends magazine .

http://www.modified.com/projectcars/0306scc_project_nissan_silvia_part_2/index.html

I still have that mag at home hidden from my wannabe zzzzzzipppp psshhhhhtttttt knuckle head son .

The name Disco Potato came from an American car called a Sentra SE/RE , it was a B13 that had a very similar driveline to a Pulsar SSS only where we had N13/14/15 they had LHD B13/14/15 and the 13 had an NA SR20DE .

Some wag did a job on the thing with that unique colour changing paint and because of its baked bean shape someone dubbed it the Disco Potato .

In the same era a , I think production engineer at Garrett in America (JCav) , was racing a Mazda Miata/MX5 and had at his disposal all the bits to brew up any turbo he liked . So he put togeter the 76T GT28 turbine and the 62T wide tip 60mm GT compressor and used big housings on it ie the GT28 0.86 A/R turbine and a T04B compressor housing .

It was so responsive that it was decided to make some prototypes and one found its way onto the Disco Potato Sentra B13 . Discopotato02 was the S13 240SX with the SR20 and DP turbo in it and 03 was my old Bluebird Ser 1 TRX with the FJ20 in it . I had a steam pipe FJ20/T28 flange manifold made to suit my GT2860RS because FJs come standard with T3 flanged T3 turbos . I talked Brett at GCG into importing the first 6 DP turbos into Australia and I got the first one for the old Bird and it worked quite well for what I wanted , bloody lucky I only ever got nailed once in that car and not when really playing up . Most know what FJs are like with their big 89mm bores and medium 80mm stroke and the ports are something an African man could put his penis into ...

They are tough as nails and rev like a turbine and they pull like Bart Simpson with a DP turbo on them .

A .

[ARTZ]

You never cease to amaze Disco..

[joeyjoejoejuniorshabadoo]

Lol thanx for the history lesson

[cannabiscorpse]

Most know what FJs are like with their big 89mm bores and medium 80mm stroke and the ports are something an African man could put his penis into ...

They are tough as nails and rev like a turbine and they pull like Bart Simpson with a DP turbo on them .

A .

I was impressed by the post, i always like increasing my knowledge- especially on turbos etc. But then this line came along- f**king hell, i literally laughed out loud to the point my Mrs was questioning what i was looking at. Ten points for you sir!!

[Nee-san]

It was inspired by this article I came across purely by chance in a friends magazine .

http://www.modified....rt_2/index.html

I still have that mag at home hidden from my wannabe zzzzzzipppp psshhhhhtttttt knuckle head son .

The name Disco Potato came from an American car called a Sentra SE/RE , it was a B13 that had a very similar driveline to a Pulsar SSS only where we had N13/14/15 they had LHD B13/14/15 and the 13 had an NA SR20DE .

Some wag did a job on the thing with that unique colour changing paint and because of its baked bean shape someone dubbed it the Disco Potato .

In the same era a , I think production engineer at Garrett in America (JCav) , was racing a Mazda Miata/MX5 and had at his disposal all the bits to brew up any turbo he liked . So he put togeter the 76T GT28 turbine and the 62T wide tip 60mm GT compressor and used big housings on it ie the GT28 0.86 A/R turbine and a T04B compressor housing .

It was so responsive that it was decided to make some prototypes and one found its way onto the Disco Potato Sentra B13 . Discopotato02 was the S13 240SX with the SR20 and DP turbo in it and 03 was my old Bluebird Ser 1 TRX with the FJ20 in it . I had a steam pipe FJ20/T28 flange manifold made to suit my GT2860RS because FJs come standard with T3 flanged T3 turbos . I talked Brett at GCG into importing the first 6 DP turbos into Australia and I got the first one for the old Bird and it worked quite well for what I wanted , bloody lucky I only ever got nailed once in that car and not when really playing up . Most know what FJs are like with their big 89mm bores and medium 80mm stroke and the ports are something an African man could put his penis into ...

They are tough as nails and rev like a turbine and they pull like Bart Simpson with a DP turbo on them .

A .

Fj20, awesome engine.

Sadly you talked me out of it Disco

[discopotato03]

Well I am a bit of an tawd goat at nearly 46 . You know the years are climbing when every thing you think of was 20 years ago .

Yes FJ20s and the turbo versions are great things but their physical size and weight is something else . You could nearly live with them but the two staggered twin row timing chains with the water pump in front on the timing cover makes them so long . Notorious for timing chain rattles and you virtually have to pull the engine apart to fix them . Head off to get the front cover off properly and sump off because some clot decided the oil pickup tube should have a brace and bolted it to the inside of the timing cover . The top chain tensioner backs out in time too much before oil pressure is up meaning rattle rattle rattle when you fire them up . Mine was freshened up twice and I really should have got Jacko to make be an adjustable one like the works FJ20 and 24 engines used . Basically a piece of thick angle iron with a threaded hole and a long bolt and lock nut on it . When the guide wears enough to let the chain rattle you loosen the locknut and screw the bolt in to take up the slack and tighten the nut . If the chain isn't slack it doesn't eat the chain guides so win win .

Anyway I liked the GT2860RS on 2L engines because they pull AND make some part throttle squirt without revving the tits off the engine hich makes great road performance . If Id wanted to drag race it would have been a GT3076R and I thought about them , but , the Garrett GT30 T3 flanged IW turbine housings werent then available and the HKS GT Pro S version poisonous money . Most people then were using some form of T3/T04B or e hybrid and they were laggy imo .

No I think a GTRS is the go when you want power and response and don't want to compromise the daily driving you do 90% of the time . I don't lair around in my Skyline and even with a std turbo it can at times feel a bit tractionless .

The Evo VI just does it so easily and has real good traction to match its real good standard power . Its the reason why I wouldn't put big power into a 2WD car .

That laughabit isn't mine sadly . The exact line was "has the sort of ports that a black man could put his penis into" and it was in relation to those hidious Ford 4V 351 Cleveland heads . Another history lesson . FOUR V means four venturie as in carburettor not four volt or four vulk .

A .

[Lithium]

So you don't think the GT-RS is a bit undersized a beast to put on a 2.5litre that likes to breathe?

Interesting that disco-potatoes and TD05s come up, I've had STI/EVO owners drive my car and say it feels more responsive than their cars running the stock turbos - I run a .82a/r GT3076R, why is that response acceptable on a rallybred machine yet not on a tourer?

I've certainly not been caught out with my car when racing, if you get lag in shifts with it then you are that bad that you are always going to have some kind of issue.

I bet a GTRS would feel neat to drive (how much laggier than stock does it feel?), but I personally have too much mechanical sympathy to run something like at more than 1bar on a 2.5 - and I bet the poor little thing is probably working itself into quite a frenzy even there.

[discopotato03]

Well Lithium that may depend on where that 1 bar comes up and how far you want to rev the thing .

I remember being surprised the first time I looked into an RB25 Hitachis std turbine housing and thinking how the hell do you get 184 Kw through that straw yet is there any boost at 1000 revs ?

I can understand how people look at a GT30 turbine housing and then laugh at a GT28 one particularly the smaller 0.64 A/R one . Those GT28 NS111 turbines are pretty good things as in very open bladed + 9 only and the tip height is quite wide for a 53.8mm turbine .

The real interesting thing is where HKS optioned the GT2835 KAI as mentioned earlier and got surprising power from them given that they're still using the same GT28 0.64 A/R turbine housing .

To get that extra power with a larger or cropped GT30 turbine means that obviously the housings throad and volute are not the major restrictions in these things .

You'll find the same thing when looking at 0.63 A/R GT30 turbine housings compared with first a GT30 turbine in it then a GT35 one .

I must go back and look at the turbine map of this GT28 NS111 76T turbine to se the differences in flow for the 0.64 and 0.86 A/R turbine housing sizes .

Something else to remember with a GTRS is that the compressor is 52T and its housing is based on a T04B rather than a T04E like the GT3076Rs normally use . The wheel speed is going to be higher as will the air speed out of the compressor housing so its probably not as bad a situation as you think , better than the std 184 Kw capable RB25 Hitachi anyway . These GTRSs aren't obviously going to pump and vent as high up the rev range as a GT3076R can but the word on the street is that 250 wheel Kws is pretty easy . If you look at 250 GTRS Kw and compare it to 300 GT3076R Kw the smaller option still gets you 83.33% of the way there . If the GT30 got you to 280 Kw the GTRS got you virtually 90% of that figure .

It still depends where you want the spread of power to be and what the torque delivery feels like .

I don't think any of the EJ20 powered STis ever felt real good , the Subaru header system is woefull and generally nothing happened much under 4000 .

A .