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Cams To Use With Hks 2835 52t Turbines

Turbz_13

By Turbz_13,
in Engines & Forced Induction

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Turbz_13 Experienced

Turbz_13

Posted
Posted

just wondering what duration cams would b the best to use with these particular turbos?

HKS GT2835

Compressor:

Wheel trim - 52T

Inducer Diameter (mm) - 51.2

Exducer Diameter (mm) - 71

Turbine:

Wheel Trim - GT28

Exducer Diameter (mm) - 51.8

Inducer Diameter (mm) - 56.5

i was thinking atound the 260 - 270 degree area.

any help would be appreciated! cheers

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R31Nismoid Grand Master

R31Nismoid

Posted
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I'd be saying factory if it's a street car.

I had nothing but excellent results with factory items, same as Guilt-toy did (GT3540/350rwkw).

It's not all about what looks good on a dyno sheet when it comes to cams and what works/doesn't.

But as per past threads, this will always be a highly trivial topic and there are points for and against.

STATUS Grand Master

STATUS

Posted
Posted
I'd be saying factory if it's a street car.

I had nothing but excellent results with factory items, same as Guilt-toy did (GT3540/350rwkw).

It's not all about what looks good on a dyno sheet when it comes to cams and what works/doesn't.

But as per past threads, this will always be a highly trivial topic and there are points for and against.

hmm i saw GTR in avatar and GT2835, surely we are talking x 2 yeah? so big hp big setup?

Turbz_13 Experienced

Turbz_13

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sorry guys! yeah i meant to say gt2835 52t x2! i think they are a little larger than the hks gt-rs'??

engine has been built, althought its 20thou over i think it adds lik an extra .03lt so still a 2.6lt!

would be looking at something real mid range for these turbos?!

Turbz_13 Experienced

Turbz_13

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oh yes, also how much lift can i increase before i have to do what ever else to the head. if the lift is increased, what else has to be changed?? springs, lifters, guides, retainers, valves??????

bradsm87 Proficient

bradsm87

Posted
Posted (edited)
is the head off? as your gonna be limited to fairly small lift cams (the tunnels need machining to allow the lobes to clear)

Not if U use Tomei cams which use a thicker buckets and smaller base diameter cams. I would use 270 duration 10.8mm lift.

Edited by bradsm87
discopotato03 Grand Master

discopotato03

Posted
Posted

For the broken record these are NOT GT28 based turbos even though HKS's handle implies they are . They have cropped GT30 turbines and in todays language are called GT3071R's .

GT28 turbines have 9 blades where GT30's have 10 .

A know a little late now but GTRS's would've probably been a better spec turbo . The cropped GT30 turbine does not like being in GT28 turbine housings and this is what they get in CA/SR/RB26 T25 IW flanged forms . The GTRS's use a GT28 turbine in a matching GT28 turbine housing .

Your call but I'd be trying the std cams first because I don't think twin 2835's are going to be super responsive on 2.6 liters .

A .

Swiper the Fox Grand Master

Swiper the Fox

Posted
Posted
For the broken record these are NOT GT28 based turbos even though HKS's handle implies they are . They have cropped GT30 turbines and in todays language are called GT3071R's .

GT28 turbines have 9 blades where GT30's have 10 .

A know a little late now but GTRS's would've probably been a better spec turbo . The cropped GT30 turbine does not like being in GT28 turbine housings and this is what they get in CA/SR/RB26 T25 IW flanged forms . The GTRS's use a GT28 turbine in a matching GT28 turbine housing .

Your call but I'd be trying the std cams first because I don't think twin 2835's are going to be super responsive on 2.6 liters .

A .

Those turbo's without a proper head will be very disapointing...no matter what cams are used. You need lots of air to make them work...something a stock head and small lift cams will not provide.

discopotato03 Grand Master

discopotato03

Posted
Posted

To give some idea on potential I think Joey here was making something like 270 Kw with one of those 2835 cartridges , admittedly in HKS's Pro S housings , on an RB25 . Even If you could coax 250 odd out of each one in RB26 housing form thats a lot of turbocharger for 2.6 liters .

You really need to look at these "GT2835's" more as a small GT30 rather than a big GT28 .

I know it starts the war but a big twin scroll single with two gates winds up being simpler IMO on an RB26 .

Actually someone I know hasn't found the limits of his 1.06 A/R single scroll GT3582R on a 26 yet , so far 370 kw and climbing as flow restrictions are removed from that car . If he gets towards the flow limits of its compressor thats 470 kw though I think he's chasing 400 at the treads .

A .

STATUS Grand Master

STATUS

Posted
Posted
na, ithe engine is all together! cause i brought these turbos few months after the rebuild cause i wasnt sure my goals at the time!!

Bugger, i would be looking at using something fairly large 270 10.8mm minimum, you know that setup is good for around 800hp :cool: and Bee-R made close to the ton with a pair.

If it was mine id lash out 280 or 290 11.5mm (and associated head gear)... wind up some boost hold the fk on :cheers:

  • 1 year later...
Piggaz Grand Master

Piggaz

Posted
Posted

There's a R33 GTR in HPI issue No. 106 that is running the twin 2835 kit. Its running the 270 10.8mm procams and making 550awhp at 25psi.

Only? Pretty poor result if you ask me! Come very close with a set of 'baby' dash 5's/2530 's on a well sorted engine!

NXTIME Grand Master

NXTIME

Posted
Posted

My RB26 made 411rwkw on high mount 2835 52T's on a built engine at 'only' 16psi. Came in at 5,300, full boost at 6,000 and went to 9,500+ power still rising, using 280° 11.5mm cams.

I wouldn't use these as 'bolt-on' upgrade.

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