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#16 (permalink) | |
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GTROC Member
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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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#17 (permalink) |
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GTR Register Member
Join Date: Jul 2003
Location: Sweden
Posts: 280
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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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#18 (permalink) | ||
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GTR Register Member
Join Date: Jul 2003
Location: Sweden
Posts: 280
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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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#19 (permalink) |
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GTR Register Member
Join Date: Jul 2006
Location: Canada
Posts: 322
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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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#20 (permalink) |
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GTROC Member
Join Date: Apr 2005
Location: Norwich
Posts: 158
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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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#21 (permalink) | |
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GTR Register Member
Join Date: Jul 2003
Location: Sweden
Posts: 280
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Quote:
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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#22 (permalink) | |
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GTROC Member
Join Date: Apr 2005
Location: Norwich
Posts: 158
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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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#23 (permalink) |
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GTR Register Member
Join Date: Jul 2003
Location: Sweden
Posts: 280
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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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#24 (permalink) |
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GTR Register Member
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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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#25 (permalink) |
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GTR Register Member
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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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#28 (permalink) |
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GTR Register Member
Join Date: Oct 2007
Posts: 390
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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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GTR Register Member
Join Date: Jul 2003
Location: Sweden
Posts: 280
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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. 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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#30 (permalink) |
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GTR Register Member
Join Date: Jul 2003
Location: Sweden
Posts: 280
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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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