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Discussion Starter #1
After reading the Jun Auto Supra artical in Max Power(Cheers Alan for telling me mate) I`ve got a little idea,how about Rupert & Glen giving me their T78`s and I`ll pay for the rest:D

249mph is awesome,but as usual Max Power could have done a much better job!Crap Mag.

Getting back to the real World regarding my engine,I am undesided as to which Turbo/turbo`s to go for,any suggestions?

see ya on Friday at K2 guys,

Cheers,
Henry:smokin:
 

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249 mph Supra

Yeah the Supra done well but unfortunately got beaten later in the day by a Datsun 240Z :D .

Just thought I'd add that while I remembered ;) .

glen
 

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Discussion Starter #3
GLEN,I never got to the end of the article where the Datsun Z 240 did better than the Supra,I couldn`t keep my eyes off of all the young crumpet featured in this issue of Max "wristy" Power.
Henry:smokin:
 

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Max power

Henry.

Yeah know what you mean. I can't have it anymore because of the blood pressure. What with owning a Skyline and trying to look at soft porn I don't think me old heart would be able to take it :D . Shame :( .

glen
 

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Henry,,,

I hope when everybody gets done looking at softporn someone will give you a answer about the turbo question.

I am also interested to find out what peoples experiences have been.:)
 

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Discussion Starter #8
A pair of T78`s

Yeah,I was just poking a bit of fun Glens way & like the great guy that he is he took the bait and we had a bit of fun.

When I get my old R33 back from GT-ART my intentions will be directed to Drag Racing.I hope to get some great 1/4 mile times & I will try different cams & turbos but I also want to keep my car road friendly with a wide power band.Track Days are still cool but I`m fed up with the restrictions on noise & the "Dick-Heads" that run them.(I even got involved in a bollocking as a passenger in "rocket" Ronnies Suburu for over- taking a GT-R when they indicated for us to pass at Kemble,I should have gone home at the start when they banned me passing wind in my Supra)

The HKS GT25 range is good with the correct engine bits "n"bobs.GT25/10`s can make a good 550bhp,GT25/30`s-600ish,& GT25/40`s 650bhp+...GT28/35`s-600-800bhp and so on,there are bigger pairs & big singles available too.

Is there anyone running a pair of KKK`s on a Skyline GT-R or the big single that Blitz put on their Top Speed Challenge R34.
Nismo,Apexi and of course Trust with there big T78 & T88 singles.If you`ve got any of these what are they like ?good or bad points appreciated.

Lets get this part of the message board going again,all the Tuners read these pages everyday, how about posting your favorite turbo/turbo`s and what cams you have found work best with your choice.COME ON ,DON`T BE SHY!!!!!!!Help us,the customers share some of your knowledge.

Henry
:smokin: :smokin: :smokin:
 

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I was not mad or anything, I was just hoping to find out more about the question. :)

I'am glad you guys have a sence of humor!:D

Cheers'
Robb
 

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turbos

hi henry i have just had my engine done in my new car by rod bell and i was looking for about 520 bhp to 550 bhp he told me that the 2510s would not manage to give me that power so i went for 2530s just something to think about before you do your engine.

running in the engine for 1500 miles. 900 to go till 1.5 bar boost
cant wait.

keith
 

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Discussion Starter #11
Turbo sizes

Hi Keith,
Rod Bells name came up in a conversation I had today with Tim at SVS,I,m told he certainly knows his Skylines back to front & inside out,but I would like to disagree a wee bit on the HKS GT25/10`s.I reckon I got very close to 600BHP before I cracked the block because I got 517BHP at Tuning Japanese at 1.3bar then I got into the 11`s for the 1/4mile & 0-60MPH in 3.64seconds with the boost setting at 1.4bar & 1.65bar splash.I wish I could have run at Dyno Day 2 at 1.65bar because I feel the magic 600BHP may have been achieved,who knows? Can someone work out the mathematics?517bhp at 1.3.......??????at 1.65?

I guess that breaking the 600 barrier using 25/10`s is one of the reasons for sticking with them,then who knows what turbo/turbo`s I will go for?everything on the car is built for 800BHP and with the new all steel bottom end being built for 10,000RPM with a larger capacity I`m looking forward to next year already.

I think there is not alot to of difference between the two sizes,25/10`s boost up quicker but run out of puff at 7,000RPM & basically the 25/30`s take a little longer to spin up but pull hard to 8,000RPM and also cams play a BIG factor as well.
At www.takakaira.com they have a power graph for the GT25 range which shows 572BHP/7400RPM for the 10`s,601.3BHP/7430RPM for the 30`s and 623.3BHP/7450RPM for the 40`s all using 272 cams.If I stick with the GT range I would go for the GT25/40R`s with 272inlet & 280exhaust cams which should produce a quick spin up and pull bloody hard to at least 9,000RPM.

As I`ve posted over the last few weeks I`m into Drag Racing for next year basically because I`ve lost a bit of interest in track days,there`s too many rules & regs.

I hope to see some of you guys up in Bonnie Scotland next year ,

Best wishes,
Henry.:smokin:
 

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turbo boost

henry i am only going on what rod told me.

i am wanting around the 550 bhp and i was going to go for the 2510s but he said there was no way they would hold that power and 1.4 bar boost.he told me i needed the 2530s i can only tell you what he told me.
in japan do they measure bhp the same way as we do
because in the states it is not the same as us either.

if you want to call him he will tell you better as i am only a
plumbing and heating eng.

thanks keith
 

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Discussion Starter #13
Too much tech stuff

Keith,
Sorry about all the gumph on the GT25 range:( I`m only a builder from West Sussex,I really wouldn`t know what to say,so I will do the Dyno first at Tuning Japanese,then talk to Rod Bell.

Cheers,
Henry.:smokin:
 

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turbo boost

hi Henry spoke to Rod today and asked him about the 2510s again
he said that they would maybe make 550 bhp but only for around
500 revs hope this helps you or something for you to think about.

Keith
 

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Hi Henry,

Couldn't find the spec's re GT turbo / cams you talk about...........may have been taken offline by now.

Anyhow I'm right in the process of trying to decide what to replace my factory R34 turbos with. I'd pretty much decided on 2530's as I'd heard they were a nice middle ground, but I'm interested in your comments re the 2540's and cam changes.

I'm aiming for 600HP but I'd like to keep it as drivable as possible. I'm not going to drag race it and I don't want to have to trash it to make it go, nor do I want to be able to look at my watch after pressing the pedal and waiting for power to arrive...........

I have asked on other forums before but no real answers.................anyone got any real suggestions on how best to achieve this ??

Spec is R34 VSPEC II
Gas is 98 Octane (I'm in NZ)
Has HKS stainless downpipes, no cat stainless converter, HKS super dragger II exhaust to the back.
Blitz Stainless intake kit
ECU will be Apexi Power FC and commander by the time I get the turbo's fitted.

Not sure on where to go with Injectors, fuel pumps, turbo's or cams. Although my local shop says the Porsche racecar pumps they have are reasonably priced and not noisy and are good for 750-800HP so I may go that way (locally available and all that)

Any help is much appreciated.

Cheers
Fraser
 

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Fraser go see Cary Moore Motors in Petone , Cary has an R32 GTR with HKS 280 degree cams and GT2540R turbos , I have not been in the car since he got the new turbos but it was real nice even with the old ones , looking through the HKS goodsmaster it does not seem there is alot of difference between the GT2510 and 2530 , the only difference I can pick is the size of the internal wastegate , a few minutes with a die grinder and they will be the same or even better.
Brenhan.
 

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Discussion Starter #17
FRASER

Hi,
Today I was taken out in Guy Rattcliffes R34 with his new GT25/30`s,WOW,it comes on boost quickly & pulled really hard to 8,000RPM.I am hoping he will post exactly what else has been done & I guess this will be of some help to you.He has the BHP & torque figures already as the car was set up & built at Tuning Japanese who have a brilliant rolling road.

www.takakaira.com This site is vast so if you take your time all the info is still there.
Click on;performance parts
scroll down left hand side
click on HKS logo
click on turbo
click on model application & prices
click on GT25 range
BINGO
It`s best now to print it off because you will keep wanting to look at it,I know I did.

If your going for much over 600BHP then maybe the GT28/35 range might be more up your street.

Best wishes,
Henry.:smokin:
 

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Thanks for the feedback Henry and Brenhan.

I've had an e-mail from Guy today with some really helpful info (thanks again Guy) I think my minds made up on the 2530's.

Any specific choices on Cam profiles ????? Make ????

One last thing.............I know you said that the come on song quickly, but is it quicker / as quick as the factory ones or just quick for what they are ????? Just to give me an idea.

Cheers
Fraser
 

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Actually ...

You are in 3 times :)

Once in the R33 with an "Abbey" ECU and HKS stage 1 cams making 452 bhp

Once in the R33 with an "Fcon V" ECU and HKS stage 1 cams making 482 bhp

And again with the R34 with ? cams making 544 bhp :)

I'd have thought 4k - 7k for overtaking; 3k-6k for break, turn, point and squirt B road stuff :)
 
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