need help making power 94tt

[pwpanas]

Originally Posted by warmkop

I would like to do low 10s but like you said step by step must get her in the 12s then 11s and hopefully in the 10s,the top ten place in sport compack in the 6cyl class is SA is 10s and first 7.8s and there is not one supra want to be the first.
First thing is the fuel system lets say 1000whp then there is no change running lean rather to big dont want melted pistons.
Wil send some pics soon.

NO - the "first thing" is that we need to put together a plan, and educate you so that you can stop listening to whomever keeps feeding you this bad advice. Running lean is not the primary cause for melted pistons in an Mkiv Turbo. Again, if your goal is 10s, you do NOT need a 1000rwhp fuel system.

[warmkop]

Okay,what is the plan wat do you suggest

[pwpanas]

Originally Posted by warmkop

Okay,what is the plan wat do you suggest

Step 1 - Define your Goal(s):
What do you ultimately want to achieve? A 10 second pass? OR 1000rwhp? Either one of these is an acceptable goal, but there's no need to try to do both at the same time, unless you're sure you want to expend time and money to get both of these.

Please note that 1000rwhp is a more specific (and expensive) goal. Since it's so specific (horsepower only), we could achieve this and your Supra wouldn't necessarily be any faster. For example, without wider rear rims and much better rubber, all 1000rwhp buys you is a slow car that does a great smokeshow. Keep in mind this is just an example to illustrate why the modifications that end up on the plan have to be considered all together at once, as a complete system, in order to keep your Supra safe, reliable, and achieve the goal of the redesign.

In one of your posts, you said your goal is "drag racing and roadrace". Is this still accurate? ...or in another of your posts, you said "I decided to build the supra for the dragstrip". If you're still interested in roadracing, what are your goals for this? Is there a particular track you plan to roadrace on? Keep in mind large turbos and high boost is terrible for roadracing. Drag racing tires are also terrible for roadracing. For roadracing, you don't need more than about 550rwhp VERY reliable, good brake pads, brake ducts, roadrace tires, and good suspension. Many of these modifications are exactly opposite of what you want for drag racing. Building one car that can do both will be quite expensive. ..or are you sure you want to modify your Supra for drag racing at the possible loss of its ability to be roadraced and handle well in cornering? - is that your final decision? I'm just trying to clarify and be completely sure.

I also need to know if you want to be daily-driving this car...or at the very least if you want to take it out on weekends and drive on the street (around town). If not, are you willing to keep your Supra on a trailer in between track events? I don't mind helping you build a track-only trailered Mkiv Supra Turbo, but I have to know that's what we're doing ahead of time. Eg. with a trailered car we can run biased-ply drag slicks with skinnies up front, remove the rear brakes, put in a parachute, and weld the rear axle solid. On car driven on the street, these modifications are impractical.

Are there any other goals? Do you also want to maintain any the Toyota design of having a car that's good for taking corners (roadracing/autocross/etc.)? What about top speed? Do you care if we limit that? All of these are considerations. I need to know as much as possible about everything that you want to do with this car, *before* we start buying parts and turning wrenches.

Whatever the goal(s) is/are please be prepared to commit to them absolutely...and do your best to eliminate all preconceived notions about how to achieve that/those goals with any one techology (eg. single turbo, fuel system, etc.) After we get your goal(s) set in stone, then we can find the least expensive and most reliable way to achieve it/them.
__________________________________________________ _________


Step 2 - Clearly define our starting point for the modifications:

The Mkiv Supra Turbo is a symphony of systems working together - we have to consider the impact of each change on the entire operation of the car - from suspension and weight balance, to traction and cornering, to engine longevity, to braking performance, convenience, maintenance, etc., etc. That's the only way to modify it and have the result be safe and reliable.

Please let me know the complete list of *everything* that has already been done to your Mkiv Supra Turbo. Is it currently driveable? Specifically, what problems are/were you having with the oem twins? To me, we should troubleshoot this problem first so we know we're starting with a good base. Also, 150psi is actually not a "good" compression test result. A new 2jz-gte actually compression tests over 170psi. I'd suggest we do a leakdown test on your engine to verify our starting point.

Has it already been modified to accept the fuel cell? Have you removed the oem fuel system yet? Have you removed the oem clutch yet? Have you installed that 'godspeed t4" 67mm turbo kit yet? ...or have you not purchased a turbo yet? (two of your posts have conflicting information). Have you already installed the "gotech pro x"? etc. What other parts have you purchased that have not been installed yet? I need to know exactly what we have as a starting point. If you have any pictures you can post, that would be good too.

__________________________________________________ ______

Please answer each and every one of these questions, in both sections above, as thoroughly and completely as possible so that I can provide you with accurate advice. Again, my goal is to keep your Supra safe and reliable, and to only recommend modifications that are absolutely necessary for you to achieve your goal(s). This approach will save you time and money, and will allow you to achieve your performance goals as quickly as possible so you can start enjoying your Supra sooner!

[warmkop]

]Step 1 - Define your Goal(s):
I would like to do a 10s pass.Was thinking of maybe doing a 1km run just for fun. Want to use her for dragracing.
At the moment i dont really want to strip to much and modify its to much of a nice car, only if its really neccesary, If i do deside to take it out on the road 2/3 times a month it wil be a short distance to show of my supra so can just put back road tires and drive it slow.
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Step 2 - Clearly define our starting point for the modifications:

So far the gearbox is out the intake is off and the turbos is off and the exhaust system. flywheel is also out. the previous owner modified the vacuum pipes on the oem twins but dit a bad job and i think the ox sensor was stuffed was very heavy on fuel. oem fuel system is still in would like to use the fuel cell.The turbo branch is in with only one bolt to see if the turbo wil fit.I do have a turbo but but its to small wil make it bigger or get a bigger one.wil take size and send it to you. wil send pictures.
I got the gotech pro x ecu,1200cc injectors for the e85.fuelrail,mines cam gears,fuel cell, fuel pressure regulator an the godspeed t4 branch.
__________________________________________________ ______

[pwpanas]

Originally Posted by warmkop

]Step 1 - Define your Goal(s):
I would like to do a 10s pass.Was thinking of maybe doing a 1km run just for fun. Want to use her for dragracing.
At the moment i dont really want to strip to much and modify its to much of a nice car, only if its really neccesary, If i do deside to take it out on the road 2/3 times a month it wil be a short distance to show of my supra so can just put back road tires and drive it slow.
__________________________________________________ _________

Step 2 - Clearly define our starting point for the modifications:

So far the gearbox is out the intake is off and the turbos is off and the exhaust system. flywheel is also out. the previous owner modified the vacuum pipes on the oem twins but dit a bad job and i think the ox sensor was stuffed was very heavy on fuel. oem fuel system is still in would like to use the fuel cell.The turbo branch is in with only one bolt to see if the turbo wil fit.I do have a turbo but but its to small wil make it bigger or get a bigger one.wil take size and send it to you. wil send pictures.
I got the gotech pro x ecu,1200cc injectors for the e85.fuelrail,mines cam gears,fuel cell, fuel pressure regulator an the godspeed t4 branch.
__________________________________________________ ______

Thank you for the information you have provided. However, I do have more questions before we get started, numbered in red below:

1) Why would you would "like to use the fuel cell"? Safety? You know that, among other things, it'll drastically reduce the distance that you can drive your Supra, right? Why give this up? Also, it'll make your Supra smell terrible inside, since ...without a LOT of custom sheet-metal work...there won't be a layer of metal between it and the inside of the car, like there is with the oem fuel tank. To me, that also makes the set-up more dangerous, and really not that much more safe at all.
Summary: You said "dont really want to strip to much and modify its to much of a nice car, only if its really neccesary". You also said you would "like to use the fuel cell". These two statements are in direct conflict with each other, because the fuel cell is not necessary to achieve your goals.

2) What is a "godspeed T4 branch". Is this an exhaust header, kind of like this one?
http://www.auto-exhausts.com/blog/wp...bo_1jz_Gte.jpg

Define Goal(s):
- 10.x seconds in 1/4 mile
- No roadracing
- Occasional slow street driving

3) What is your speed/time goal for the "1km run"? If you don't care if (for example) it's bumping off the rev limiter for the last 1/4 of the 1km run, then we don't need to worry about this goal. However, if you want (for example) to hit a maximum top speed of 190mph, then it becomes an important consideration.

4) Nitrous oxide - is this available where you live (I would assume so, but please confirm). Are you willing to consider this as part of your drag racing solution, if it was one of the components of the most cost-effective setup?

Define Starting Point:

5) Would you be willing to sell your t4 header/"branch" and put your oem twins back on, IF we determined that was the least expensive way for you to achieve your goal(s)? ...or do you really, really want a single turbo Mkiv Supra? Either answer is okay with me, I just need to know what it is. If it matters at all, I'm 100% sure that we could definitely get your vacuum lines back to oem configuration, and get your oem twins working properly.

Note: It was probably "very heavy on fuel" because of a boost leak, and not because the ox sensor was "stuffed".

Recommendation: Please perform a leakdown test on your 2jz-gte and post (or PM) me the results.

Request: Please post picture(s) of your Supra as it sits right now.

6) Are you willing to sell any of these other parts, if it is determined that we really don't need them to meet your goal(s)?
"gotech pro x ecu,1200cc injectors for the e85.fuelrail,mines cam gears, fuel pressure regulator"

7) How much time, money and effort have you already invested in creating your custom flywheel? The reason I ask is because I believe we could find a way to get you one ready-to-go for a very affordable price. I'd rather have you invest time in unique modifications that will make your car go faster, rather than spending it on a part you can get off-the-shelf.

[warmkop]

1) Can use the oem fuel tank must just get one more pump in the system

2) Its basically that know its not a good make but the brand names are very expensive and cant find any 2nd hand ones.

Define Goal(s):
- 10.5 wil be very happy wit that.
- No roadracing
- street driving wil be like 3 times a month and not much further then 5km

3) would like a decend speed if not much of a change

4) nos is very difficult to full up and dont want to use it
Starting Point:

5) Would like to go single turbo.
must just get every thing ready for the leak down test


6)would like to use the parts i bought also the fuel is crap this side and seen good results with e85
7) Have not spend alot of time on the flywheel to busy at work.

[warmkop]

Not sure wat size it is bought it off my friend it has a A/R 70 with a 57mm and the exhaust not sure the outlet is 70mm havent striped it to take size but wil make it bigger not a problem or sell it and get something else.

[pwpanas]

Originally Posted by warmkop

1) Can use the oem fuel tank must just get one more pump in the system...

Thank goodness. Putting a second fuel pump into the oem fuel tank is quite simple:
http://www.mkiv.com/techarticles/fue...DualPumps2.jpg
Please go ahead and sell that fuel cell.

Originally Posted by warmkop

...2) Its basically that know its not a good make but the brand names are very expensive and cant find any 2nd hand ones....

Please post up a picture of it.

Originally Posted by warmkop

...3) would like a decend speed if not much of a change...

Please be more specific. What is a "decent speed" to you? 150mph? 175mph? "a decent speed" is too subjective, so we would either have to competely ignore that goal during the build, or you need to decide much more exactly what you want to achieve.

Originally Posted by warmkop

...4) nos is very difficult to full up and dont want to use it...

Hmmmm. This could significantly impact the cost. To me "very difficult" is not the same thing as impossible. Personlly, I would put up with something difficult if it meant saving a significant amount of money...

Originally Posted by warmkop

5) Would like to go single turbo....

Okay, but is this a build requirement, or not? If we could save money by getting you into the 10s without a single turbo, would you consider it?

Originally Posted by warmkop

...6)would like to use the parts i bought also the fuel is crap this side and seen good results with e85...

okay, but what about the gotech pro x ecu? Would you sell that if it turns out we don't need it at all?
Also, please post a link where I can learn more about this ecu.

Originally Posted by warmkop

...7) Have not spend alot of time on the flywheel to busy at work.

Ok. Please post a picture of how far you've gotten on this project.