George L Posted July 19, 2002 Share Posted July 19, 2002 Hi all This is my first post so be nice I am looking to buy a TT Supra. I have always loved the looks of the car and obviously the engine. What I would like to know is how easy it is to increase the power of the engine. Which mods work the best together etc etc. Has anyone got a TT with 400bhp, this sounds like a nice figure to aim for. What sort of money would I be looking at to get 400 horses from the UK spec car? I hear that big engine overhauls involve dropping the twin turbo configuration for one big blower. I heard that dragon can uprate the std turbos to take more boost. Forgive my ignorance as I have never owned a turbo car. Is it just a case of getting a boost controller and a chip to up the psi. I know the std psi for the turbos is rated at 11. something psi. and that these units can be taken to around 17psi. Would uprated injectors be need for this? If you could give me any advice as well as pointers as to what to look for when buying. I might spend less on a car so I can put the rest to engine modifications, or buy a car with small modifications, such as filters and exhaust systems Many thanks George Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted July 19, 2002 Share Posted July 19, 2002 Originally posted by George L If you could give me any advice as well as pointers as to what to look for Yes look for this http://supra.highspeedhostinggroup.net/public_html/vbb/images/top_search.gif Have you by any chance been reading the article about Supra's in Japanese Performance magazine ? Quote Link to comment Share on other sites More sharing options...
tDR Posted July 19, 2002 Share Posted July 19, 2002 Standard UK spec Supra has 326BHP. So for your 400BHP you only need to make 74BHP. Around 50BHP is allegedly achieveable by fitting a decent exhaust system (Blitz, HKS) and a full de-cat (it has 2 cat's, get rid of both of them). This will also transform the car mainly through it's quicker spool up of the turbo's and nicer sound. Budget around £800 for this. That leaves you with 24BHP to gain - easily achieveable with a small increase in boost pressure, say 13psi instead of 11. You can do it the 'proper' more expensive way with an electronic boost controller by Blitz, HKS, Apexi etc. or you can do it the simple mechanical way - this way is cheaper but you won't be abe to adjust the boost in car. May be an idea to fit a decent boost guage as well to keep an eye on things. *** DISCLAIMER *** I'm a n00b too looking for a Supra TT and as such don't have any real experience! Quote Link to comment Share on other sites More sharing options...
George L Posted July 19, 2002 Author Share Posted July 19, 2002 Thanks thunder! That sounds like an easy number to achieve then! Do you know what the advised maximum, or should I say safe max for the std turbos to run at is? I will budget £3k for my engine mods, unless I can find a Sup with a full system and induction kit. I have seen some Supras with really big ehaust exits. I think they look the best. Do you know which system has the larger exits? Thanks again George oh and thanks Martin Quote Link to comment Share on other sites More sharing options...
Myles Posted July 19, 2002 Share Posted July 19, 2002 Hi. I agree , they're gorgeous cars . I wouldn't be too bothered about bhp figures .....get as good a car as you can (look for the bigger brakes - especially if you intend to use it on any track days) & drive it for a while b4 you decide where (& if) the engine is lacking . I think the upgrade path would go : exhaust , boost gauge , decat , boost controller (& fueling upgrade for j-specs), fmic , hybrids or big single (the former for faster spool-up , the latter for higher top-end power) .....you might want an EGT gauge when you fit the boost controller . ...I've done no mods yet ...but I'm sure some of the more experienced guys can advise & point out where I've gone wrong . Quote Link to comment Share on other sites More sharing options...
tDR Posted July 19, 2002 Share Posted July 19, 2002 Originally posted by George L Thanks thunder! That sounds like an easy number to achieve then! Do you know what the advised maximum, or should I say safe max for the std turbos to run at is?... ...I have seen some Supras with really big ehaust exits. I think they look the best. Do you know which system has the larger exits? Thanks again George oh and thanks Martin From what I've read 17psi is the max you can run on standard turbo's, but to get past 15psi you need an FCD (Fuel Cut Defencer). As for the exhausts, Both the Blitz Nur spec-R and the HKS Super Drager are excellent systems with huge jap style rear exits. See Blitz and TDI for HKS Quote Link to comment Share on other sites More sharing options...
George L Posted July 19, 2002 Author Share Posted July 19, 2002 Thunder you are a legend and extremely helpful, thanks again! George Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted July 19, 2002 Share Posted July 19, 2002 Hi George, 400 BHP would be decat, Exhaust, fuel pump ( if you buy a J spec)Water injection, & possibly cams. 18 - 19 psi is the practical limit on Optimax, although you can go higher with trick fuels but the efficiency of these turbo's go out of the window. Hybrid turbos are a good option. Call Leon Green ( 07956 285 219) for Details. Both He & Chris Wilson are your best bet for reliable, affordable tuning of these cars. Good luck. Quote Link to comment Share on other sites More sharing options...
matt Posted July 19, 2002 Share Posted July 19, 2002 Originally posted by George L oh and thanks Martin You should be thanking him ........... you'll find a shitload more info than you'll get from this thread.. Ever wonder how many times that gets asked here? Quote Link to comment Share on other sites More sharing options...
George L Posted July 19, 2002 Author Share Posted July 19, 2002 Thanks again Terry! And sorry Matt if that comment sounded sacry I wasn't aware there was a search facility, and i can fully appreciate annoying people like me ask these questions very frequently. Sorry for that, but I did appoligise for the inconvenience in the first place. I am just giving you clearver people an oppertunity to show off your Supra knowledge. Unfortunately I lack lots of this in the Jap car market, mainly because when these cars were first released I could bearly afford a Nova SR Whats all this about VVti models, are they better? Cheers Guys George Quote Link to comment Share on other sites More sharing options...
George L Posted July 19, 2002 Author Share Posted July 19, 2002 you even more cleaver people can correct all my typo errors! lol Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted July 19, 2002 Share Posted July 19, 2002 "Whats all this about VVti models, are they better?" Probbaly but much less tunable Quote Link to comment Share on other sites More sharing options...
Branners Posted July 19, 2002 Share Posted July 19, 2002 I found the VVTi to feel less powerful than my stock non-vvti. I believe everything on the VVTi was done to get it within emissions limits. They are harder and more expensive to tune as there are so few of them that have been heavily modified. Stick to a nice UK spec or pre 97 non-vvti if you plan on doing the normal tuning modifications. JB Quote Link to comment Share on other sites More sharing options...
George L Posted July 19, 2002 Author Share Posted July 19, 2002 TDI don't seem to be cheap! Even for fairly standard parts like intercoolers and charge coolers. £1350 for an intercooler sounds alot. You could get 4 for a cossie at that price! Extra injectors are £165 when I looked into Supercharging my car they were about £50. Does that seem to be the trend with tuning Jap cars? Probably something I will get used too! I think buying a car with a full system manifold and induction kit would be a good move. The UK spec cars have good brakes from what I can make. I found this one, I am not a big fan of bolt on bumpers and body kits though. 1994 TOYOTA SUPRA 3.0 Turbo 3dr Hatchback 1994 Highly modified rare 6-speed UK car with £20k professional bills from summer 2001. NOT AN IMPORT. Fully loaded. Approaching 500bhp and 0-60 in 4.4 seconds. E-mail for full spec. REDUCED from £18500 to £16500 (or closest offer) for immediate sale. PLEASE GET INSURANCE QUOTE BEFORE VIEWING. 70000 miles. £16500. George Quote Link to comment Share on other sites More sharing options...
George L Posted July 19, 2002 Author Share Posted July 19, 2002 What sort of power are you two guys running? I often here that some cars making 800 - 100 bhp loose out on 1/4 miles to cars with 450bhp. Reading DP Motorsport webby this was mentioned in great depth. Will I have to take this into consideration when buying? I don't want a car that is 100 bhp less than I am lead to believe, that could be very imbarresing for me. Especially if I told everyone only to be proven a bull shitter on the rollers. Buying a car from a club member could always be a good option, you know its come from a good home then! George Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted July 19, 2002 Share Posted July 19, 2002 Originally posted by George L TDI don't seem to be cheap! Even for fairly standard parts like intercoolers and charge coolers. £1350 for an intercooler sounds alot. You could get 4 for a cossie at that price! Extra injectors are £165 when I looked into Supercharging my car they were about £50. Does that seem to be the trend with tuning Jap cars? Probably something I will get used too! I think buying a car with a full system manifold and induction kit would be a good move. The UK spec cars have good brakes from what I can make. I found this one, I am not a big fan of bolt on bumpers and body kits though. 1994 TOYOTA SUPRA 3.0 Turbo 3dr Hatchback 1994 Highly modified rare 6-speed UK car with £20k professional bills from summer 2001. NOT AN IMPORT. Fully loaded. Approaching 500bhp and 0-60 in 4.4 seconds. E-mail for full spec. REDUCED from £18500 to £16500 (or closest offer) for immediate sale. PLEASE GET INSURANCE QUOTE BEFORE VIEWING. 70000 miles. £16500. George A lot of info about that particular car has been posted in the 'For Sale' section on this BBS. Take a look. Quote Link to comment Share on other sites More sharing options...
George L Posted July 19, 2002 Author Share Posted July 19, 2002 Thanks Martin, You really unnerve me when you quote my posts George Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted July 19, 2002 Share Posted July 19, 2002 Originally posted by George L What sort of power are you two guys running? I often here that some cars making 800 - 100 bhp loose out on 1/4 miles to cars with 450bhp. Reading DP Motorsport webby this was mentioned in great depth. Will I have to take this into consideration when buying? I don't want a car that is 100 bhp less than I am lead to believe, that could be very imbarresing for me. Especially if I told everyone only to be proven a bull shitter on the rollers. Buying a car from a club member could always be a good option, you know its come from a good home then! George About 280 bhp;) If you buy a car wiyh a quoted figure, ask for a printout otherwise be sceptical. Every Cossie with an Air Filter & Exhaust has 370 bhp:D It is fairly easy to get upto 450 bhp from a TT. Much more if you have the money:rolleyes: Quote Link to comment Share on other sites More sharing options...
George L Posted July 19, 2002 Author Share Posted July 19, 2002 To true, Well I am sure 325bhp will be awsome for a while then its just a case I want it to go faster, feel faster, sound faster etc. Do you fit any type of dump valves or are they just for R5 GTT's and RST? I am getting excited at the prospect of owning a Supra now, sex on rubber! I think the first thing for me is to get the speed restrictor removed. Is it right that they will do a shade under 170mph with it removed. Have most people had theres done? Has anyone had a top speed run at Bruntingthorpe or private motorway etc? George Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted July 19, 2002 Share Posted July 19, 2002 I have had mine off the clock a couple of times whilst testing;) The J spec has a speed restrictor which Pete Betts on this forum has a device to remove. He also sells boost cut defeaters. Get rid of the cats & change the exhaust, put a Boost controller in & off you go. We do use BOV's, but the stock one is OK until you really increase the power.... Quote Link to comment Share on other sites More sharing options...
George L Posted July 19, 2002 Author Share Posted July 19, 2002 Can you hear the stock BOV? As I would love a Fast and Furious style noise from underneath my bonnet! I take it you can get a few different types from people like HKS etc!? And whats off the clock mate? tell me tell me! George Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted July 19, 2002 Share Posted July 19, 2002 You RS boys I don't know:rolleyes: You will get the Dump noise by changing to an induction air filter & sticking with the stock BOV. 180mph is off the clock but I don't know how accurate this is. A UK Supra in top gear at 7500 RPM would do 230mph FYI if you can over come the aerodynamics. The J Spec would be 209 at the same RPM. HTH Quote Link to comment Share on other sites More sharing options...
George L Posted July 19, 2002 Author Share Posted July 19, 2002 Lol 230 mph, I take it the Areodynamics will stop it way before that, even if you had 700 or 800 bhp! The thought of owning a 200 mph car is something else though What are the areodynamics of the Supra like? Must be fairly good to get 180bhp. I take it a std TT won't go off the clock though? George Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted July 19, 2002 Share Posted July 19, 2002 Aerodynamics are good, but 200mph good I don't know. I am sure one of us will find out soon. There were stories of the cars flipping at 186 but I am sure it's B.S. I had my bone stock TT nudge just over 170 against a Testerossa once. Took a while to get there though. Quote Link to comment Share on other sites More sharing options...
George L Posted July 19, 2002 Author Share Posted July 19, 2002 "Took a while to get there though" Who cars it got there! Where does it start to slow, 155mph. You must stop getting me so excited! I keep thing about drving round in a lovely black TT with multispoke 19s and a "Super Sound DD Dump Valve £325 70044" of course Oh and I am not an RS boy I jumped from an older slow car to a newer car, which is good in its own rite but just have the shire power I am after! George Quote Link to comment Share on other sites More sharing options...
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