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Old 18th July 2008, 09:47 AM   #16 (permalink)
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Quote:
Originally Posted by Alecci View Post
Fair enough, I couldn't care less for people having such an amount of spare time that they reply to threads without addressing the topic at all or doing so in such ignoble and mockingly expressed sentiments that the reply doesn't do the author any credit.


Not to offend anyone, but he's right. I use the search really often, but sometimes the results aren't satisfiying, so you just ask directly.

Interesting Question btw!

Marc
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Old 18th July 2008, 10:47 AM   #17 (permalink)
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It's not like I'm a newbie on here, I've done my fair share of searching and reading others' posts over the years. I've still, however, to find a satisfactory answer to my question.

I realize the question could be a bit hard to address, since - like dazman wrote - the response of the car/engine is not all up to the turbochargers, but rather like tyndago usually express it, 'it's all in the tune'. That doesn't have to stop one from making sure that the prerequisite conditions are as optimal as can be.

In addition, the question becomes even more demanding with regards to the probable facts that few people has tested all turbochargers initially listed, and thereby they'd have a hard time giving a fair few of what turbocharger really measure up to the conditions given in the posted question.

I guess there's a mathematical way of addressing the topic properly and giving an unprejudiced reply, but I'm sadly lacking in sufficient knowledge, mathematics skills and - last but not least - the proper terminology to do it myself.

Like I mentioned, there is a thread comparing different brands of pistons and, in the process, taking into account most common aspects that come in question when you're in the market for buying a set. If I'm not mistaken, the thread contains some sort of diagramme or spread sheet that lists the pistons and their features in an easily comprehensive way. Why not a thread of the same sort for turbochargers?
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Old 18th July 2008, 10:59 AM   #18 (permalink)
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In response to:

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Originally Posted by hyrev View Post
GT-SS, although it may be right at the threshold of genertating 600 @ the fly.
I sure hope I worded my response correctly, would hate to get flamed.
...and:

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Like i said earlier i can only go by my experience and the 2530s are great. My mate had gtss and ran them at the max for 4yrs,they went pop last week. Something to bare in mind if your looking for round the 600bhp figure,id rather have turbos with a bit to spare than at the limit all the time.Oh and i know a lot depends on the set up of the car but mine seems more responsive than his was ;-) hope ive helped mate :-)
Thanks for your input.

I've seriously considered the HKS GT-SS (or Garrett equivalent by the name of GT2860R-5), but it seems to me fairly few people actually do achieve the 600 PS @ the flywheel I'm asking for. On the other hand, like I quoted Tyndago in my previous post, it might very well be in the tune. In addition, some sheets I've seen listing maximum power output for turbochargers often designate their peak at 580 PS.

The HKS GT2530's, however, are often listed at 630 PS, and it would therefore seem to me that a smaller turbocharger may be used instead, as smaller turbos are generally more responsive. The Garrett GT2860R-7 is often cited as a cheaper, or at least priceworthy, alternative to the GT2530's and with similar characteristics.

What I'm really after may very well be something in between the GT-SS/2860R-5 and the GT2530/2860-7. It would certainly be a major bonus, of course, if they're bolt-on for the RB26DETT.
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Old 18th July 2008, 11:33 AM   #19 (permalink)
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The difference in spool between the -5's and the -7's is pretty small to begin with, I can't imagine someone making a custom turbo to slop right between them.

And you have your nomenclature mixed up, the 2860R-5's are larger than the 2860R-7's.

For 600 HP I would personally go with the 2860-5's. I've driven a car with them, and the response was fantastic. Yeah, they're a bit slower than stock, obviously, but still a huge, very useable powerband on the street even punching it from a slow roll and low revs. The Garrett's are also significantly cheaper than their HKS counterparts, and are essentially the same turbo.

I've seen the 2860R-5's for as low as 850 bucks a piece, which would be around 425 pounds per turbo, or 850 for the pair.
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Old 18th July 2008, 03:43 PM   #20 (permalink)
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Alecci

I've just had fitted GT2560R - 707160-9 to my car these are essentially the same as the HKS GT-SS turbos. I've been impressed with how quickly they spool and the power made. If you are going to go down the garrett route, I suggest you contact Josh at PSI Supply (check out the traders area).

PM me if you have any questions.

PS. The above bolt straight on to the RB26.
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Old 18th July 2008, 06:15 PM   #21 (permalink)
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Alecci

I've just had fitted GT2560R - 707160-9 to my car these are essentially the same as the HKS GT-SS turbos. I've been impressed with how quickly they spool and the power made. If you are going to go down the garrett route, I suggest you contact Josh at PSI Supply (check out the traders area).

PM me if you have any questions.

PS. The above bolt straight on to the RB26.
Incidentally I was checking up on that particular turbocharger myself yesterday. I reckoned they would seem like something between the GT2530/GT2860R-5 and the GT-SS/GT2860R-7.

I noted the following on the Garrett homepage: "Turbine housing has a unique "compact" 5-bolt outlet that is not interchangeable with traditional T25 5-bolt outlets". Did this constitute any problem for your part?

Many thanks for your thoughts, mate.

Last edited by Alecci; 18th July 2008 at 06:33 PM.
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Old 18th July 2008, 08:10 PM   #22 (permalink)
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Incidentally I was checking up on that particular turbocharger myself yesterday. I reckoned they would seem like something between the GT2530/GT2860R-5 and the GT-SS/GT2860R-7.

I noted the following on the Garrett homepage: "Turbine housing has a unique "compact" 5-bolt outlet that is not interchangeable with traditional T25 5-bolt outlets". Did this constitute any problem for your part?

Many thanks for your thoughts, mate.
No they bolt straight on, they are a direct replacement for the standard turbos. I'll post a dyno print tomorrow so that you can see the power they made.

The following link is helpful, as it shows direct comparisons of the turbo specs:

GT-R Turbos

Let me know if I can be of any further assistance.

Simon
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Old 18th July 2008, 08:23 PM   #23 (permalink)
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Crossr mate,

Sounds great! It'll be very interesting to see!

What would you otherwise think of combining the compressor from the Garrett GT2680R-5 with the turbine from the Garrett GT2560R-9?
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Old 18th July 2008, 09:10 PM   #24 (permalink)
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Alecci, Like I said I wasnt trying to start an bitching war, just an observation.

You already have 2860r-5's muddled up with your GTss etc: ,(2530) how well did you read ?

With regard to the piston thread analogy, as far as Im aware, theres one thread not 50 asking the same question.

Im not the forum police, I just find it frustrating seeing the same or similar questions asked when as far as Im conerned most of the questions can easily be answered by spending some time at the pc using the search function here or google.

And Im more than happy to help most people with most things as you can se from my other threads.

On some of the other forums I write on, you just get FLAMED for not searching first, again not saying we should, just an observation.


If you had really searched "GTSS" "2860r-5" "2530" etc: , you probably would have answered your own questions .....

Last edited by GT-R Glenn; 18th July 2008 at 09:13 PM.
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Old 18th July 2008, 09:21 PM   #25 (permalink)
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Best 'Small' Turbos for GTR


GT-ss or GT2530?

-5s or -7s

Aftermarket Turbos?

ULTIMATE TWINS

R32 gtr turbo response?

GT2860 plumbing and installation

Turbo lag - turbo response - real or imagined ?

RB26.Best single turbo for 550-600bhp?

2510 or 2530s on a stock internaled engine

HKS GT-SS vs HKS GT2530

2530's v 2860 -5's

2510 vs 2530


I didnt even look at the next 20 pages of results.......

Last edited by GT-R Glenn; 18th July 2008 at 09:26 PM.
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Old 18th July 2008, 10:36 PM   #26 (permalink)
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LOL

Alecci = pwned.
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Old 18th July 2008, 10:52 PM   #27 (permalink)
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LOL

Alecci = pwned.
That remark might carry more weight if it wasn't in l33t speak
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Old 18th July 2008, 11:43 PM   #28 (permalink)
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I don't really care about how much weight it carries. Alecci claimed to have searched and read through posts about similar topics but said that no post about this particular topic had answered his question. Glenn posted up about a dozen posts that completely refute that. thats a massive amount of fail for Alecci in my book.

I hope those posts have good relevant information.

Wait, I know they do, I participated in more then 1/3 of them.
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Old 18th July 2008, 11:53 PM   #29 (permalink)
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Not aiming for 600 PS, thus doesn't answer my question.

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Originally Posted by GT-R Glenn View Post
Same old comparison basically (GT-SS, GT2530, GT2860R), doesn't answer my question.

Quote:
Originally Posted by GT-R Glenn View Post
Basically just stating that the 7's are the more responsive ones compared to the 5's, still doesn't answer my question.

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Originally Posted by GT-R Glenn View Post
Concerns turbo upgrade for a standard engine, which somewhat different to what I'm looking for.

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Originally Posted by GT-R Glenn View Post
This thread deals with suitable upgrades for a RB30, which is a bit out of my league and the turbos discussed there wouldn't suit my build.

Quote:
Originally Posted by GT-R Glenn View Post
Main focus is on tuning in general with particular views to cam choices, I'm just looking for tips on turbo upgrades as I have the rest of my build completed.

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Originally Posted by GT-R Glenn View Post
Deals with installation issues and the general 'concept of response' when it comes to turbos. Interesting indeed, but not what I'm looking for.

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Originally Posted by GT-R Glenn View Post
Very interesting thread which I have read a few times before, but the chart posted by tyndago is - regrettably - quite hard to read as the colors are blurred (at least for me), and while it does include more options than most threads it doesn't cover them all.

Quote:
Originally Posted by GT-R Glenn View Post
Concerns single setups, I'm going for twins.

Quote:
Originally Posted by GT-R Glenn View Post
Very interesting as it deals with the GT2510's, which I am particularly interested in. Still not much of a comparison that I haven't seen before though.

Quote:
Originally Posted by GT-R Glenn View Post
Same old chatter, really... GT-SS spools quicker/sooner while the GT2530's deliver more power. Nothing new.

Quote:
Originally Posted by GT-R Glenn View Post
Same discussion as very often lately, comparing the popular HKS turbos with the similar and also popular Garrett ones.

Quote:
Originally Posted by GT-R Glenn View Post
Nothing new when comparing to the first 2510-vs-2530-thread you listed.

Quote:
Originally Posted by GT-R Glenn View Post
You already have 2860r-5's muddled up with your GTss etc: ,(2530) how well did you read ?
I noticed that as well and I got it right next time I brought the Garrett turbos up, but it was too late to edit my previous post.

So now I know that the HKS GT2530's and the Garrett GT2860R-5's are similar (though the Garrett ones are cheaper), and that the HKS GT-SS and the Garrett GT2860R-7's are similar (though the Garrett ones are cheaper here as well). I also know the difference between these two 'types' of turbos, i.e. the first ones spooling quicker/sooner and the second ones being a bit slower but generating more power. I also know that the HKS GT2510 is something in between the GT-SS/-7's and the GT2530/-5's, but they're hard to get your hands on. Nothing of this is new to me.

We can go on and on about this, but I'm still not considering my questions to have been addressed before, while you do. It seems my concerns here are providing you good amusement though, so I guess you're maybe not wasting your time after all.

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LOL

Alecci = pwned.
Well aren't we the king of cool? Seriously, get a life. I had more respect for you, in spite of your first contemptuous reply in this thread, prior to you making childish remarks like this one. That's a massive amount of fail for you in my book.

I've checked most of the threads Glenn posted earlier, and I checked all of them again. I don't agree with you that they answer my questions, even though I readily admit they're cramped with useful info in general, most of them deal with what I already pointed out in my initial post.

Nothing compels you to read my thread, even less so to write any replies to it. So if you're not willing to bother with it, why don't you go do something useful instead, like trying to find a pouch of hens' teeth?

I thought the forum was a place for people to share knowledge, experiences and post up questions. Well, since it seems I was mistaken I'll bother no more.
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Old 19th July 2008, 12:13 AM   #30 (permalink)
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GTR Glenn,

I went back to one of your old threads here. If you'd combine that table with the one tyndago has posted quite a few times you'd have what I'm looking for.

Basically, one axle for boost and one for engine speed, but concentrated on similar turbochargers in twin setups and with more options for comparisons.

As I wouldn't expect anyone to bother coming up with anything as advanced for my sake, I thought I'd try to visualize my own table, taking into consideration the experiences of others.

Right, with that said this discussion is over for my part.
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