HKS 2540's - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

Bandit · 3rd December 2005, 04:33 PM

Been offered a decent pair of 2540's with equal lenght manifolds and top pipes etc off a mate who is going the big single route.

What are peoples opinions on these blowers and what sort of power could i expect to see?

My cars current spec

Standard RB26 block and internals
Unknown hybrid steel twin T3 turbos
Equal lenght exhaust manifolds
Apexi PFC
550 injectors
HKS 264 / 272 cams and pulleys
Apexi N1 evo exhaust
Trust down pipes
Trust de-cat
Trust intercooler
HKS hard pipe kit
HKS induction kit
Nismo fuel pump

Last outing on the RR it was pushing

525.8 BHP (flywheel)
414 LBFT
422.7 BHP (wheels)

All at 1.2 BAR of boost.

Would i see any improvement on the above figures with the 2540's?

Cheers

paul cawson · 3rd December 2005, 05:19 PM

You would need Z32 MAFs and 720 injectors to see the benefit then you are good for 600/720 bhp@the flywheel if the engine will take it.I had a pair fitted to my car but like the smaller turbos for the road better. My car used to drink a quater of a tank of fuel every 20mins when driven hard.

davew · 3rd December 2005, 06:18 PM

hmmmm how much?

Bandit · 3rd December 2005, 07:22 PM

Quote:

Originally Posted by paul cawson

You would need Z32 MAFs and 720 injectors to see the benefit then you are good for 600/720 bhp@the flywheel if the engine will take it.I had a pair fitted to my car but like the smaller turbos for the road better. My car used to drink a quater of a tank of fuel every 20mins when driven hard.

Was thinking id need bigger injectors and Mafs, these can wait until the rebuild next year though.

Cheers

Bandit · 3rd December 2005, 07:23 PM

Quote:

Originally Posted by davew

hmmmm how much?

Not telling

Ok Ok. £2000 for the whole kit, fitted and mapped.

Ajax · 4th December 2005, 07:25 PM

Only problem i can see with that is that your starting to get into engine internals teritory for long term reliability if your going to see the full bennefit of 2540s. Their also a more of a 'top end' blower from what ive read compared with 2530s and the like so reinforcing the former point ive made above

The Admiral · 4th December 2005, 07:40 PM

If you have a search on skylinesaustralia.com you'll find that 2540 don't always work that well on RB26s...

Cheers

Rog

gtr R33 lee · 28th December 2005, 05:54 PM

Bandit, you state on your current spec your running T3 turbos, are these the standrard size ones, and do they really produce 525.8hp(flywheel) and with 1.2 bar boost, let me know mate, im really

gtr R33 lee · 28th December 2005, 05:56 PM

sorry pressed post quick reply before finished................... im really interested to know the answers, cheers.

Bandit · 28th December 2005, 07:19 PM

GTR R33 Lee

Have just got the old turbos out of my boot

Will write down all the AR numbers and post a few pics of them etc tomorrow if i get a chance. Still not 100% sure as to what they are. Inlet housing looks about the sameish size as standard but the exhaust housing is as big as my 2540's

Hopefully someone on here will be able to help out with identifying them. They have even got HKS elbows on them?

Steve

Bandit · 28th December 2005, 07:22 PM

Quote:

Originally Posted by Ajax

Only problem i can see with that is that your starting to get into engine internals teritory for long term reliability if your going to see the full bennefit of 2540s. Their also a more of a 'top end' blower from what ive read compared with 2530s and the like so reinforcing the former point ive made above

Oh dear. Looks like i was a little too close to 'engine internal teritory'.

Now have a dead engine.

Thought it seemed alot quicker for a bit.

SteveN · 29th December 2005, 12:15 AM

WHY did it die tho?

Ie whats dead on the engine?

gtr R33 lee · 29th December 2005, 01:57 AM

Bandit, im no skyline wizzard but if you had 525.8 bhp from unknown turbos i would imagine something wasnt right, you stated Unknown hybrid steel twin T3 turbos, are the T3 the standard size cus if she was dynod at that hp with them turbos no wonder she died mate, shame youi didnt get those 2540 s of your mate and got it set up, what happened, how you know shes dead,cheers

Bandit · 29th December 2005, 09:22 AM

Quote:

Originally Posted by gtr R33 lee

Bandit, im no skyline wizzard but if you had 525.8 bhp from unknown turbos i would imagine something wasnt right, you stated Unknown hybrid steel twin T3 turbos, are the T3 the standard size cus if she was dynod at that hp with them turbos no wonder she died mate, shame youi didnt get those 2540 s of your mate and got it set up, what happened, how you know shes dead,cheers

GTR R33 Lee. I think we're getting our wires crossed here mate.

The car made 525 BHP on the OLD (unknown) turbos, was running fine for ages with them on.
The engine blew on the HKS 2540 turbos.

Something in the engine let go on tickover. (

Loud metal slapping metal sound from inside the block)

Engine should be stripped in a few weeks so hopefully i should find out more then.

I think the standard GTR turbos are T28 (someone correct me if im wrong)

Bandit · 29th December 2005, 09:24 AM

Quote:

Originally Posted by SteveN

WHY did it die tho?

Ie whats dead on the engine?

Thats the million dollar question...

Hopefully i should have the answer soon.

3rd December 2005, 04:33 PM	#1 (permalink)
Bandit GTR Register Member Join Date: Jul 2004 Location: In the fast lane Posts: 742	HKS 2540's Been offered a decent pair of 2540's with equal lenght manifolds and top pipes etc off a mate who is going the big single route. What are peoples opinions on these blowers and what sort of power could i expect to see? My cars current spec Standard RB26 block and internals Unknown hybrid steel twin T3 turbos Equal lenght exhaust manifolds Apexi PFC 550 injectors HKS 264 / 272 cams and pulleys Apexi N1 evo exhaust Trust down pipes Trust de-cat Trust intercooler HKS hard pipe kit HKS induction kit Nismo fuel pump Last outing on the RR it was pushing 525.8 BHP (flywheel) 414 LBFT 422.7 BHP (wheels) All at 1.2 BAR of boost. Would i see any improvement on the above figures with the 2540's? Cheers

3rd December 2005, 06:18 PM	#3 (permalink)
davew GTROC Member Join Date: Apr 2003 Location: Up North Posts: 2,618	hmmmm how much? __________________ The GTR Shop - Skyline GTR Breaker and Parts supplier. We buy your crash damaged, broken or mot failed car for cash. call now. For all your GTR needs. From 1/2 clips to turbos, seats to shells , harness's to engines. call Mobile 07731304953 GTR店 We ship worldwide.

28th December 2005, 07:19 PM	#10 (permalink)
Bandit GTR Register Member Join Date: Jul 2004 Location: In the fast lane Posts: 742	GTR R33 Lee Have just got the old turbos out of my boot Will write down all the AR numbers and post a few pics of them etc tomorrow if i get a chance. Still not 100% sure as to what they are. Inlet housing looks about the sameish size as standard but the exhaust housing is as big as my 2540's Hopefully someone on here will be able to help out with identifying them. They have even got HKS elbows on them? Steve Last edited by Bandit; 28th December 2005 at 07:23 PM.

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3rd December 2005, 05:19 PM	#2 (permalink)
paul cawson New Users Join Date: Jul 2003 Location: Essex Posts: 2,098	You would need Z32 MAFs and 720 injectors to see the benefit then you are good for 600/720 bhp@the flywheel if the engine will take it.I had a pair fitted to my car but like the smaller turbos for the road better. My car used to drink a quater of a tank of fuel every 20mins when driven hard.

4th December 2005, 07:25 PM	#6 (permalink)
Ajax GTR Register Member Join Date: Jun 2005 Location: Plymouth Posts: 420	Only problem i can see with that is that your starting to get into engine internals teritory for long term reliability if your going to see the full bennefit of 2540s. Their also a more of a 'top end' blower from what ive read compared with 2530s and the like so reinforcing the former point ive made above

4th December 2005, 07:40 PM	#7 (permalink)
The Admiral GTR Register Member Join Date: Jul 2004 Location: Scotland Posts: 614	If you have a search on skylinesaustralia.com you'll find that 2540 don't always work that well on RB26s... Cheers Rog

28th December 2005, 05:54 PM	#8 (permalink)
gtr R33 lee GTR Register Member Join Date: Nov 2004 Location: peterborough Posts: 334	Bandit, you state on your current spec your running T3 turbos, are these the standrard size ones, and do they really produce 525.8hp(flywheel) and with 1.2 bar boost, let me know mate, im really

28th December 2005, 05:56 PM	#9 (permalink)
gtr R33 lee GTR Register Member Join Date: Nov 2004 Location: peterborough Posts: 334	sorry pressed post quick reply before finished................... im really interested to know the answers, cheers.

29th December 2005, 12:15 AM	#12 (permalink)
SteveN GTR Register Member Join Date: Aug 2002 Location: Just off the M5/A40 Posts: 7,209	WHY did it die tho? Ie whats dead on the engine?

29th December 2005, 01:57 AM	#13 (permalink)
gtr R33 lee GTR Register Member Join Date: Nov 2004 Location: peterborough Posts: 334	Bandit, im no skyline wizzard but if you had 525.8 bhp from unknown turbos i would imagine something wasnt right, you stated Unknown hybrid steel twin T3 turbos, are the T3 the standard size cus if she was dynod at that hp with them turbos no wonder she died mate, shame youi didnt get those 2540 s of your mate and got it set up, what happened, how you know shes dead,cheers