Tannhauser Posted January 11, 2004 Author Share Posted January 11, 2004 Could I also ask if there are any further opinions (thanks, Adam!) on Jeff's suggested turbo, which how I started originally. Here are the details/sales blurb: Precision SC61 Turbo T31 high flow turbine housing CNC machined Precision T04E style compressor cover - redesigned for maximum efficiency Max rated hp: 680 COMPRESSOR Wheel diameter 61mm Inducer 2.416" Exducer 3.227" Trim 56 Inlet/outlet size 3" / 2" Bearing 360 Race AR .48 or .63 TURBINE Wheel style T04 or T350 Inducer 2.920" Exducer 2.420" Trim 69 Sadly, most of these numbers mean as much to me as F#m7b5 means to non-musicians. From these stats, is it possible for some wise soul to figure out if this fits my stated aims at start of thread - or would another turbo be better suited? Or is empirical testing a better guide? Preferred wheel - To4 or T -350? .48 or .63 AR? Very informative thread to date, thanks everyone. Link to comment Share on other sites More sharing options...
Guest 2JZfan Posted January 13, 2004 Share Posted January 13, 2004 Chris, sorry about the delayed response... for whatever reason i was unable to access the board for almost two days... ?? anyway, the amount that we port the wastegate hole would exceed the amount of material that is present on the stock casting... in other words, there would be no surface left to form a good gasket seal... so what we do is build up material (weld) on both sides of the flange and then machine the whole flange back to being flat... at this point we are free to port the hole out to the larger diameter... the good thing is that the studs are still secured into the stock casting... the welded area is not needed for strength in any way, it merely provides a gasket sealing surface... here is a before and after... in the second picture you can see the manifold after it is welded, but before it is ported... http://members.cox.net/induction/manifold1.jpg http://members.cox.net/induction/manifold2.jpg after porting, the manifold is ready to be mated with a racegate flange (the as-cast manifold is set up for the much smaller deltagate flange)... from there we can make an adapter pipe to convert to any other wastegate flange - HKS GT, Innovative Progate, Turbonetics Racegate, etc... as far as the 1JZ question, i honestly don't know... i've never had a 1JZ in the shop to examine... there are no US spec cars that I'm aware of that come with this motor so its extremely rare... i'm going to guess that the head is different, but i can't say for sure... finally, we should be able to ship a kit to Wes (Wez) at the beginning of February... hopefully this will answer all of our remaining questions... but it would still be GREAT to get some more pictures before that point in case that would allow us to tweak the design prior to shipping... a view looking straight down into an engine bay with no turbos (showing where the steering rack is mounted to the cross-member) would be helpful... i *think* that they are on the opposite side of the cross-member (rear instead of front on the US)... this could effect the routing of the wastegate dump tube... Link to comment Share on other sites More sharing options...
Gaz Walker Posted January 14, 2004 Share Posted January 14, 2004 Terry, my wastegate is the innovative Progate. If anyone wants this kit - mine manifold has been modified to like the one Jeff sells - I am accepeting offers. Also my kit is in the UK already saving 250 dollars shipping and 400 dollars in taxes. Gaz. Link to comment Share on other sites More sharing options...
Guest 2JZfan Posted January 14, 2004 Share Posted January 14, 2004 Gaz, can you post a picture of your modified manifold? I've never seen another one modified like ours, I'm just curious as to what it looks like... Thanks, Jeff Link to comment Share on other sites More sharing options...
Tannhauser Posted January 14, 2004 Author Share Posted January 14, 2004 Originally posted by Gaz Walker Also my kit is in the UK already saving 250 dollars shipping and 400 dollars in taxes. Gaz. Very true. On the other hand, yours doesn't come with a turbo and you were originally asking £1700 (=about $3100). Unless you're now accepting radically less, prices sound fairly comparable to me when you balance these factors out. Regards, Cliff Link to comment Share on other sites More sharing options...
Nick Posted January 15, 2004 Share Posted January 15, 2004 Hi Jeff, I've got a couple of questions for you... Can the kit be used with a Garret turbo? Would you sell the kit without a turbo at a reduced price so I could use my own? What's the largest compressor housing that will clear? Will the intercooler pipe supplied connect to the pipe from a HKS Intercooler? Does the wastegate dump to atmosphere? Thanks for your time! Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 15, 2004 Share Posted January 15, 2004 The kit in the pics dumps wastegate gasses back into the system. You do NOT want one that dumps to atmo, the noise is horrendous and you'll be *issed off with it in hours. Also bars you from 99.9% of track days, too. Link to comment Share on other sites More sharing options...
Guest 2JZfan Posted January 15, 2004 Share Posted January 15, 2004 Nick, all of our turbos are Garrett based... we exclusively use Precision Turbos... Precision uses Garrett wheels combined with their own custom housings... in many cases, a 100% off-the-shelf Garrett turbo is not the best performance solution... The combination of an exhaust wheel from one Garrett turbo, a compressor wheel from another and a custom housing from Precision makes for an awesome combination of performance and reliability... BUT, if you already have a turbo that you are dying to use, we can supply a kit without one... your turbo needs to be a similar design though, it must use a tangential T04 turbine housing with an integral v-band lip... finally, any tangential turbine T04 turbo (with any of the compressor covers - E, S, and H) will clear the manifold... thanks, Jeff Link to comment Share on other sites More sharing options...
randy Posted January 16, 2004 Share Posted January 16, 2004 I love the sound of an open wastegate! Car sounds wicked! Maybe too loud for you chaps in the U.K :D Link to comment Share on other sites More sharing options...
Adam W Posted January 16, 2004 Share Posted January 16, 2004 I can barely hear my open WG, the exhaust is too loud! The new setup should have the dump pipe routed just behind the front wheel on the drivers side, I might be able to notice it it then Link to comment Share on other sites More sharing options...
MONKEYmark Posted January 16, 2004 Share Posted January 16, 2004 is the hks wastegate sort of like a cossie one with screw you can turn to keep boost down? i need to sort some sort of fueling system out when i get my kit. would like to keep the stock rail if possible. will 850cc injectors be plenty enough for a mid size turbo. what does a wastegate sound like? Link to comment Share on other sites More sharing options...
Guest Terry S Posted January 16, 2004 Share Posted January 16, 2004 Mark 850's will be plenty enough. E-mail me on the fuel sytem. Link to comment Share on other sites More sharing options...
Nick Posted January 16, 2004 Share Posted January 16, 2004 Thanks for the info Jeff, it's appreciated. Link to comment Share on other sites More sharing options...
randy Posted January 17, 2004 Share Posted January 17, 2004 720's should be fine up to a 700rwhp! most mid size singles(T-67) dont make more than 700 at least not on regular boost levels! Link to comment Share on other sites More sharing options...
Wez Posted January 17, 2004 Share Posted January 17, 2004 Paul Whiffin now sells direct replacement injectors for J-Specs that use the standard rail and no resistor pack etc from 600cc up to 800cc, they are very resonable in price as well. Link to comment Share on other sites More sharing options...
Nick Posted January 22, 2004 Share Posted January 22, 2004 Any update Wez? I'm just waiting to see how it fits before thaking things any further... Link to comment Share on other sites More sharing options...
Gaz Walker Posted January 22, 2004 Share Posted January 22, 2004 Originally posted by Wez Paul Whiffin now sells direct replacement injectors for J-Specs that use the standard rail and no resistor pack etc from 600cc up to 800cc, they are very resonable in price as well. You can try us for these too, they are also on our site. Regards, Gaz. Link to comment Share on other sites More sharing options...
Wez Posted January 22, 2004 Share Posted January 22, 2004 Hey Guys, As soon as the kit arrives I will let you know if there are any fitment problems. I currently searching for clutch/flywheel combo to go with it but undecided yet. Link to comment Share on other sites More sharing options...
Wez Posted January 22, 2004 Share Posted January 22, 2004 Hey Guys, I am currently looking at these additional mods to go with my kit, what do you guys think :- * Stock Flywheel * RPS Max Series Street Disc * Boostlogic Crank Pulley (Balanced and Damped) * 3.5" Cat 1 Replacement (matches veilside) I am also undecided on which intercooler to go for, which of these do you think would be best suited :- * CW SMIC * Greddy SMIC * Greddy 3 Row FMIC If i go for a FMIC then I also need to replace the radiator which is not a problem with a SMIC, also remember that I am only aiming to run about 1.0 - 1.3 Bar of boost which is well within the effeciency of the turbo so it should not be generating too much heat. Wez Link to comment Share on other sites More sharing options...
MONKEYmark Posted January 22, 2004 Share Posted January 22, 2004 Originally posted by Wez Hey Guys, * Boostlogic Crank Pulley (Balanced and Damped) * 3.5" Cat 1 Replacement (matches veilside) I am also undecided on which intercooler to go for, which of these do you think would be best suited :- * CW SMIC * Greddy SMIC * Greddy 3 Row FMIC If i go for a FMIC then I also need to replace the radiator which is not a problem with a SMIC, also remember that I am only aiming to run about 1.0 - 1.3 Bar of boost which is well within the effeciency of the turbo so it should not be generating too much heat. Wez wez which kit and turbo have you gone for. the stock crank pully is supposed to be a weak point and can crack. dont the 3.5" downpipe help with spool? i have gone for the 3.5" DP/MP on my kit. why would you need to replace the stock radiator. i know the fmic blocks it and it can run hot. but have seen mods you can do to direct cold air inbetween fmic and radiator. have see some big power supras with standard radiators still. full fuel kits are not bad price wise in usa, but if you have jap supra you will also need a resistor pack too. or you can get blitz 850cc high impedence side feed injectors for standard rail. if you price injectors up over here it is not far off a full fuel kit with dual walbros aeromotive fpr and fuel lines. have you started mapping your aem? is it easy to use Link to comment Share on other sites More sharing options...
Wez Posted January 22, 2004 Share Posted January 22, 2004 Hiya, I have gone for the Induction Motorsport kit without the turbo as I already have a PHR stage 1 turbo. I have also heard the pulley being a week point, the boostlogic is the highest rated in US and not too bad on price either. As for the downpipe I have one included in the kit so I just need to replace the first cat, i will prob get this done at Hayward and Scott as they will make it to the car. The standard radiator with a FMIC infront of it is ok for street but if you like to spend a day at track then it could cause over heating issues which is why I would need a radiator as well. Paul Whiffin now sells various size drop in Injectors for the J-Spec with no resistor pack needed and these go upto 800cc i think but looking on PHR website you can buy a fuel rail with adapters and 850cc injectors for $1250. As for the AEM i couldn`t praise it enough, i have been running this in my car for some time now and my supra is my daily driver, all down to the mapping and setup which my mapper has spent alot of time on. The software is very easy to use indeed. Link to comment Share on other sites More sharing options...
MONKEYmark Posted January 22, 2004 Share Posted January 22, 2004 wez you can get 800cc injectors for stock rail but they are £100+ each then with fuel pumps and lines and fpr it gets a tad expensive. or you could buy a us fuel kit but they use low impedence injectors and you need a resistor pack have just wrote about how much a resistor pack will cost. would like to stick with stock rail and uprate with new fuel lines. i was on the aem forum other day and it looks complicated. is your car a jap supra? hope it all goes well, cant wait for mine, not that it will get fitted anytime soon Link to comment Share on other sites More sharing options...
Wez Posted January 22, 2004 Share Posted January 22, 2004 Yeah i am on a J-Spec 6 Speed. Link to comment Share on other sites More sharing options...
Nick Posted January 23, 2004 Share Posted January 23, 2004 Sounds like things are coming along How much was the kit without the turbo, take it you went for all the extras...? Link to comment Share on other sites More sharing options...
Adam W Posted January 23, 2004 Share Posted January 23, 2004 Originally posted by Chris Wilson Finally, do you know if the manifold will bolt straight up to a 1JZ-GTE engine, the 2.5 version fitted to late J-Spec MKIII Supras and Soarer 2.5 TT's? I came across a post on supraforums the other day about turbo kits on 1JZ engines. Apparently the stud pattern and a few other things are different between the 1J and 2J heads. However you can drop a 2JZ head onto a 1JZ block apparently (or vice-versa if you wish) which would solve that problem. Link to comment Share on other sites More sharing options...
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