-
Posts
1,046 -
Joined
-
Last visited
-
Feedback
100%
Content Type
Profiles
Forums
Events
Gallery
Media Demo
Store
Everything posted by tommis85
-
Crans, Yeh well I'm thinking that it should be ok as well as long as you dial in a boost level that provides similar air flow / quantity as the 13 odd pounds that the twin stockies currently spool up. Obviously, a T88 running at 10 pounds on my stock engine will probably kill things haha! My aim at the moment is not to make insane horses. All I really want to do for now is to replace my set of ticking ceramic time bombs with a modern reliable turbo. I know that upgrading with twin 2860's etc or something like that is the easy fix and much cheaper, but I really want to go for a nice single. Personal thing I'd only be tuning in a boost/air flow volume that the engine support systems would allow, whatever that figure may be - probably 280 to 300hp once it's gone through the transfer case etc. So yeh, nothing major. I probably wouldnt know what I'm doing with Nistune but it sounds like an excellent system for remapping the ECU's. I'll have to see if the local tuner has access to this equipment. I think that the very least you'd have to do would be to let the ECU learn the new turbo's air flow all over again with a reset. I'm starting to get the impression that it would be a tedious little exercise with the stock ECU but I guess there'd be at least a couple things you can tweak on the settings. Do you know of anyone who's done this conversion? Thanks for the help ;-) Tom
-
Hi all, I've been wading through the threads on here in regards to doing a single turbo conversion but cant find exactly what I'm after. Maybe you could help me or perhaps provide some links to helpful pages? So far I've found a lot on twin-up grades but not so much on singles. What I've been researching is converting my GTR from twin to single and I have a couple of question below. Please feel free to elaborate or add to the items that need to be covered as I'm sure I'd missed a couple! 1. The biggest question of all I have is can I get away with out a PFC, at least at the start? 2. When not using a PFC (or equivalent) is it OK to just keep the 2 AFM's by using a "Y" pipe? 3. Seeing that you only have the one dump pipe with single turbo, would you simply bolt both the O2 sensors into the one pipe after one or another (or next to one another, whatever is best) ??? 4. Is there anything important to look out for with other sensors that are hooked up to the induction system? 5. When running boost levels/air volume levels around the 1 Bar mark, would I still be OK to run my factory cams? I know that these are ideal for running 2560/2860's etc and in some cases have better results than aftermarket cams - but how would I fair with a single turbo conversion. 6. Obviously you have all your oil/water line issues as well etc 7. I'm yet to decide on the turbo itself. So far I've only researched turbo sizes for a twin upgrade (as this was my original plan) but haven't done too much reading into single conversions. I take it that they would be quite similar to the single upgrades on GTST's, in the GT30 to GT35 region??? They are some of the main points I've been pondering about along with what turbo size would run best with a configeration like that. Obviously, you'd have more tuning capabilities with a PFC if you were to run a turbo that has much different compressor efficiency than the two twins combined etc. Could anyone please shed some light on these issues for me...possibly someone else who's done the same thing? Ie, started off with twin set-up and then converted it over to single configuration. Any experiences would be muchly appreciated. Thanks!!! Tom
-
Hehe, you'll have more cops in ur cruise than skylines =)
-
Correct me if I'm wrong but I have been lead to believe that M spec R33's are the only ones with sunroofs? Apparently the sunroof is only in the m-spec S1, S1.5 (which was mine) and the S2. Just to add to the list of things haha. Also, just a correction from the linked thread above....the S1 and S1.5 R33's all had steel wheeled turbos with ball bearings whereas after 1995 they changed to ceramic with plain bearings....ie, the crap turbos that you sorta don't want to take over 12 pounds or so. They didnt ALL have ceramic turbos like the thread states. Paulr33, do you know if all the R32's had ceramics? I think they did, regardless of year and spec.
-
oops
-
-
Yeh I'm interested to see what caused it too. I'll be investing in a set of turbos in the near future which will be around the GT-SS or GT-RS / N1 size. I'll most likely be going with a set of Garretts (GT2560's or GT2860's depending on their badging) These units would easily run a bar without problem? The boost level he was running definitely wouldn't have caused it??? The other day I was reading about oil restrictors on here....but you would've had that all sorted as you've no doubt had the turbos on their for a while?
-
R33 Gtr - Stock Turbo Limit For Track Use
tommis85 replied to tommis85's topic in R Series (R30, R31, R32, R33, R34)
Andrew, I just got a questions for your last post there... You say a "quick tune".....what should my mechanic look out for? AFM's, timing, injectors, spark....O2 sensor readings??? I know that after so many years the GTR definitely needs to be tuned...it's just that people have told me that the GTR can look after some of the tuning by iteself??? -
R33 Gtr - Stock Turbo Limit For Track Use
tommis85 replied to tommis85's topic in R Series (R30, R31, R32, R33, R34)
Thanks mate - ok, I'll have a look. Thanks for your help. Are you sure that the stockers make that much? If the GTR makes approx 220hp at the rear on stock boost which for me was around 11 pounds....then, how much would it make at 13.5 pounds you reckon? 260-270hp??? It has 3" system to help with flow (and also hi flow intake.) Also, if I went for the upgrade turbos you mentioned above....what sort of power could I expect from them? I think I may have under-estimated them by the sounds of things? Would I be running these upgraded units on around 15 pounds as my entire engine bay and support system is stock (ie, pump, injectors, regulator, coil packs....the works) -
Gtr Factory Exhaust Manifold, Turbo Side Porting
tommis85 replied to JimX's topic in Engines & Forced Induction
Heller44.....I wonder why they would do this for but?? Confusing (for me, first time buying new turbos for any car) I wonder what my mechanic will make of that this lol. EDIT: it may explain why GT2560's and GT2860's cost the same -
Gtr Factory Exhaust Manifold, Turbo Side Porting
tommis85 replied to JimX's topic in Engines & Forced Induction
Haha yeh, and it's hard to get hold of other people with GTR's and who are in the same boat as you! Yes, that's quite true...you don't want to have to shave parts of the block and then off the manifold again trying to even them out lol...that would be a nightmare! I'm sure that if you left 0.5 to 1.0mm remaining you should be pretty much right (I'm guessing that stock setups are worse than 1mm out too). Offcourse, when you're trying to jam the last couple of horses out of the turbos then well, you'd match them perfectly till you cant feel the line where manifold joins turbo / block etc. But that's risky business. You'd have to shave off a fraction and then re-fit....then shave another fraction off lol. I'm predicting that you may have 300-500rpm more lag...maybe. Dunno. But that may all be cancelled out with good flowing exhaust to help spin those turbos up quicker. So yeh, I vote for "Installed the 2530's and the turbos aren't as laggy as I thought they'd be" ... I shall check every day and see if you have updated the post. I'm yet to decide on twins or single... -
Gtr Factory Exhaust Manifold, Turbo Side Porting
tommis85 replied to JimX's topic in Engines & Forced Induction
RB26S13......I sent you a PM regarding my turbos, see what you make of it if you have time Cheers, Tom -
Gtr Factory Exhaust Manifold, Turbo Side Porting
tommis85 replied to JimX's topic in Engines & Forced Induction
GeeTR....are they that bad are they? Personally I've never bothered to check - you think they would have done a good job with the GTR's and Skylines in general. Are stock setups like that? -
Gtr Factory Exhaust Manifold, Turbo Side Porting
tommis85 replied to JimX's topic in Engines & Forced Induction
Heller44...when you have time could you have a quick squiz at my thread? I need advice exactly on your 2860's....I'm getting conflicting advice. People on here say 2860r's (both in -7 and -5) while my mechanic insists on the smaller T2560's -
Gtr Factory Exhaust Manifold, Turbo Side Porting
tommis85 replied to JimX's topic in Engines & Forced Induction
Well technically all ports should match up exactly to what they're attached to and vice versa because otherwise turbulence is created in whatever space is not matched up properly. The worse the match up, the worse the turbulence. I'm not sure how good you are with the dremel, but I think I would have taken mine to a workshop and they can match it perfectly. I'll be upgrading my R33 GTR turbos soon too...so I'm interested with what this thread evolves to I've been posting my questions on here incase anyone wants to have a look...need as much advice as I can get. Sorry, don't mean to hijack this thread lol http://www.skylinesaustralia.com/forums/R3...im-t228630.html JimX...I might sound a bit cynical about taking a die grinder / dremel to the manifolds/ports....but sh[t dude if that works out for ya perfectly congrats! Am keen on seeing how you go - so far I've only done single turbo swaps on Cordias....never touched skylines before (only done intercooler install on my old 33 gtst) -
R33 Gtr - Stock Turbo Limit For Track Use
tommis85 replied to tommis85's topic in R Series (R30, R31, R32, R33, R34)
djr81, I just want some nice decent power - around 300rwhp or so for track use (sprints etc - not drag). I've been in contact with my mechanic and he has recommended a pair of GT2560's which are meant to be the N1 equivalent (according to him) I thought the GT2860r-7 is N1 equivalent (for the R34 GTR) I just gotta remember that these bigger T28 turbos are only fed by 1.3L lol!!!! There would be jack all low end power...the GTR would become one of them lag monsters! I've been told that the 2860's make awesome power on SR20's.....you sure they're not too laggy on only 1.3L input? ....or? Yeh, I'll have a look at the other threads - are some really good ones on here. I want to look up single turbo conversions too. Cheers, Tom -
R33 Gtr - Stock Turbo Limit For Track Use
tommis85 replied to tommis85's topic in R Series (R30, R31, R32, R33, R34)
A GT-SS is a GT2860r-7 correct? I'm looking into those at the momment - they appear to be a pretty good upgrade with stock cams etc - actually, they're meant to go well with the cams. Yes I did notice the oil temp creep up last time which alarmed me...it went about 1/3 up the gauge. But then it is driven exceptionally hard! These may be silly questions, but what sort of things should the tuner be checking for? AFM's, fuel pressure, timing, O2 sensors, spark/coil packs...I have been lead to believe that the GTR's ecu can overcome some tuning problems on it's own....but that may be just a heap of sh]t??? Thanks for the help Ferni -
R33 Gtr - Stock Turbo Limit For Track Use
tommis85 replied to tommis85's topic in R Series (R30, R31, R32, R33, R34)
That's very true mate. Should get the car all decked out...at least turbo wise so I can run a proper 14 pounds like most turbo cars do with stock engines (WRX's, Cordias....anything wtih Vr4's in them etc) I just got a quote from one of the turbo specialists in town and they're around $1200 each for a pair of T28's. (I believe these would be a version of the bolt on T2860's) So that's not too bad of a price but I better comfirm it on the Garrett site. What do you run in your's if I may ask??? T25's,T28's, GT-SS's, GT-RS's and N1's seem to be a common upgrade...??? -
Reasonable Price For R34 Rb26dett
tommis85 replied to toy515's topic in General Automotive Discussion
I take it you want one for your silvia? I don't know about R34's....but, R33 engines which are not toooo different go at such a variety of prices it's not funny. Last time I went looking. I found some for around $5000 (I think that would be a reasonable average) but then there were also the odd one's between $10,000 and $13,000, with so called "unchecked internals - we think it may have forgies...freshly imported..." lol I'd try some importing websites and see how much they do em for. -
R33 Gtr - Stock Turbo Limit For Track Use
tommis85 replied to tommis85's topic in R Series (R30, R31, R32, R33, R34)
djr81, Yes that's very true with the brakes and tyres. Yep, the oil temp crept up a fair way on my GTR which makes me want to get a proper cooler for it. Yup, I drive for a good 45mins or so to get to the event so there's some good heat going into that engine on the way. Sometimes it's too tempting to keep going - but normally I try to use the cool-off "in lap" for what's it there for lol and then, in the pits I let it idle for ages with the bonnet popped. I do sat-arvo sprints and also want to get into top gear sprints....so, because they're just sprints there's no reason why you cant take it easy on the first lap if one's that concerned about the motor ;-) Well, at the momment there are more people voting for 14 pounds rather than against. A bar is 14.9 or 14.6 pounds anyway so I'm not even on a bar yet. Tom -
R33 Gtr - Stock Turbo Limit For Track Use
tommis85 replied to tommis85's topic in R Series (R30, R31, R32, R33, R34)
What's not black and white lol? I'm lost....did I mention that somewhere lol? Well, I went for a quick squirt after getting exhaust and pulling restrictor out and I too still have my turbos in there. See this is where it gets difficult, when you have people who apply the 1 Bar rule-of-thumb without any problems and love it and then also get people who say it's "suicide"....just quoting from the linked thread above. I guess it depends on how you drive too. If you drove up a continuous incline, in 4th on max boost (14 pounds)....then well, the answer is obvious. ...but Queensland raceway, it's a series of corners and hairpins with only really the front straight when you can open up them throttle bodies I have to have a look but I dont think I'm running exactly 14 pounds....I think it's a tad over 13. Maybe I should put my controller in and wind it down to 12 or something for track use - that's still a good level. Do you now run upgraded turbos? Or are you still on your stockies? I've been checking out GT2560's, 2860, GT-SS and GT-RS's....lots and lots of reading lol -
Guys, I've posted up a fresh post about my queries here. Paulr33, you're most likely right there but I just want to get some input from other GTR owners and hopefully get some ideas on what turbos to maybe upgrade too. I'm fearing that my GTR stockos are just no good for track use hey - how g*y is that!!!!! Here's the link to new thread - it should get some hits very soon hopefully http://www.skylinesaustralia.com/forums/R3...im-t228630.html
-
Hi all, I seem to have stumbled across an oldish thread where a heated duscussion raged on what caused stock ceramic wheels to fail. I recommend this thread: http://www.skylinesaustralia.com/forums/Ce....html&st=60 I posted a couple questions at the end of the thread but I don't think many people frequent this one much anymore so I thought I'd re-post my question here. What is the limit of stock 1995 GTR turbos when using them on the track? In one of my recent posts I was assured that taking out the boost restrictor was perfectly fine.... BUT....is this safe for track use? I have been advised on the above thread that it's suicide. Could someone who's in the same boat please help me out here, because if it is unsafe then I will put my boost restrictor back in for the next track day (to bring it down from 14 pounds to 11 pounds approx) I'm under the impression that 14 pounds / 1 Bar(ish) is OK for a squirt every now and then but is very dangerous for 5 "hot laps" on Queensland Raceway lol Any experiences would be much appreciated. Cheers Tom
-
Hmm ok. Well, there seams to be a lot of people on various SAU threads who say it's ok, and then there are also the same number of people who say no. But, we do have one critical factor in this thread and that is that it's 14 pounds on the track. Now, for those of us who've taken our skylines (be it GTR or GTST) out on to the track all know that there's a big difference between flying around a circuit and giving it a little squirt on the highway or wherever. 1 warm up lap, 5 hot laps and then a cool down lap of hell! It really tests the cars that's for sure. So you reckon I'd be better of sticking the boost restrictor bung back in just to be on the safe side? With the bung in there the GTR was running somewhere between 10.5 and 11 pounds stock standard. I got a guy at work who wants some GTR stockies to bolt onto his L28 engine (Nissan 260Z) so I might just take it easy with these and instead by an upgrade turbo package. Aparantly there are a couple of good deals out there....or perhaps go for a set of N1's? Paulr33....might have to discard that 1 Bar rule for Skylines when it comes to track work???
-
Hi all, I have read thru this entire thread and it has some excellent content. Excellent work guys and thorough research. From the above I too have developed a question and that is: "How do 1995 R33 GTR stocko's compare?" They are a smaller turbine and hence should, as stated, cope with slightly higher (raised) rpm's than say, a GTST turbine of the same year. I currently run a 3 inch system, although only from the CAT back (with hi-flow 3" cat). I have also taken out the restrictor after extensive discussions on here saying that it's OK to do so. A combination of the higher flowing exhaust and removal of restrictor have raised the boost up to around 13.5 to 14 pounds. I always let engine warm up and warm down (with turbo timer) as I'm aware that it does a world of good for engine and turbos. So, in other words I'm giving the turbos time to cool down and contract SLOWLY which should somewhat make life easier on them. However, what does concern me is track days. I've had one on stock boost, but my next one will be with the higher boost level. Will the smaller GTR stockies put up with extended thrashings? The track is Queensland Raceway, so for those who know it has the front long straight while the rest of it is a series of small squirts from corner to corner where your brakes and tires experience more wear than anything else haha! Any advice would be much appreciated guys - thanks!! Tom