Megasquirt I just *finished* my 12A NA + T Conversion!
03-31-09, 09:04 PM
#26
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Location: FL
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jobro, that's not too horrible :-) The acceleration should be quite impressive! I'm guessing that your MAT sensor is preturbo? I'm still piecing together the fuel rail for my 12A turbo project so am hungry for info... You're using closed loop boost control I guess? That's working very well.
-Mike
-Mike
03-31-09, 11:57 PM
#27
jobro, that's not too horrible :-) The acceleration should be quite impressive! I'm guessing that your MAT sensor is preturbo? I'm still piecing together the fuel rail for my 12A turbo project so am hungry for info... You're using closed loop boost control I guess? That's working very well.
-Mike
-Mike
04-01-09, 07:08 AM
#28
I have the *****! I drive all the way out there, and on the way my 'sporadic' problem of the starter refusing to fire reappears. My mate said its probably the solenoid. So now I need to replace that.
I was having problems with overheating because of my shitty throttle pull bracket. My cooling system isn't enough to keep the car cool for 10mins @ 1500rpm. I'm waiting here to stage because some ******** ran into the kitty litter at the drag.
Then it stalls, starter works, but refuses to start because its at like 106degC coolant! That was **** pushed it out and roll started it, next time around I stalled when I was the next car in line, so we just pushed it off, roll started it for the 50th time that day and came home. The run is recorded, and I have the time slip but I have the ***** also because I think I lost my fav pair of multi pliers
Anyway it was roughly 14.76 @ 99.xxMPH so I did pick up more speed, I could tell because I crossed the line in 4th @ 7000rpm. The car is definetly better than the PB of 14.28 I just need to drive it to that!
I was having problems with overheating because of my shitty throttle pull bracket. My cooling system isn't enough to keep the car cool for 10mins @ 1500rpm. I'm waiting here to stage because some ******** ran into the kitty litter at the drag.
Then it stalls, starter works, but refuses to start because its at like 106degC coolant! That was **** pushed it out and roll started it, next time around I stalled when I was the next car in line, so we just pushed it off, roll started it for the 50th time that day and came home. The run is recorded, and I have the time slip but I have the ***** also because I think I lost my fav pair of multi pliers
Anyway it was roughly 14.76 @ 99.xxMPH so I did pick up more speed, I could tell because I crossed the line in 4th @ 7000rpm. The car is definetly better than the PB of 14.28 I just need to drive it to that!
04-02-09, 10:17 AM
#29
I had one more go with a completely heat soaked engine bay.
Reaction: 1.322
60ft: 2.449
330ft: 6.549
660ft: 9.776
M.P.H.: 76.71
K.P.H.: 123.46
1000ft: 12.495
E.T.: 14.769
M.P.H.:99.58
K.P.H.:160.26
23degC, 81%H,1012mB,1666RA, Track Temp 34degC
I have installed an EBC since the last run but the whole night was full of my car problems! Boost response is better than the last run I think. But you can clearly see what heatsoak has done to my boost curve! I imagine power was way down.
My car needs more work as well as better driving.
Traction issues were much less than last time, other than inside the 60ft.
Reaction: 1.322
60ft: 2.449
330ft: 6.549
660ft: 9.776
M.P.H.: 76.71
K.P.H.: 123.46
1000ft: 12.495
E.T.: 14.769
M.P.H.:99.58
K.P.H.:160.26
23degC, 81%H,1012mB,1666RA, Track Temp 34degC
I have installed an EBC since the last run but the whole night was full of my car problems! Boost response is better than the last run I think. But you can clearly see what heatsoak has done to my boost curve! I imagine power was way down.
My car needs more work as well as better driving.
Traction issues were much less than last time, other than inside the 60ft.
04-07-09, 08:19 PM
#31
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Join Date: Feb 2009
Location: Europe
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I would buy a MS2 CPU with a 3.0 PCB kit. You should also buy an extra LM1815N chip from the supplier. I would buy a TIP120 Darlington transistor, and also some (3?) IRLZ44Z MOSFETs.
I will order this in short time, but tell me, if i plan to run like 8 injectors, should i need to buy more transistors to run it?
The easiest (and most expensive) way of fuel injecting the 12A is with a downdraft IDA manifold, and a 50mm ida style throttle body that has provision for 4 petrol injectors.
Already on the way, CBR600 RR 2004, 4 Itb´s with 8 Denso Injectors 12 holes each one
You can do fuel only, or fuel and spark. I have always controlled spark with Megasquirt. I would probably suggest doing this as well. The easiest parts list is.
The 12A N/A stock distributor is ok for this? or i need 1986 and up ?
Megasquirt 2 with V3.0 PCB kit
Extra LM1815N chip
Extra transistors and mosfets I said above
Series 4 Turbo RX-7 (approx build date 1986 to 1988) waterpump with standard water temp sensor.
Is this important? i can place a new sensor temp if need
Either IDA intake, or 1986 through 1991 RX-7 Turbo intake and ASK adaptor plate.
If you want to use ASK adaptor plate I suggest you also find a primary iron that has injector provisions in it. I would suggest factory 12A Turbo centre irons, or GSL-SE centre irons from America. You will need to check the bolt spacing differences for yourself.
For this i will make one intake to match the CBR 600 ITB´s
If you plan on going turbo buy the boost solenoid kit from the reseller too.
Regarding maps I have already posted my full setup map on this forum. When you understand the system well enough you will be able to understand the settings you are putting in.
Regarding injectors I would suggest finding 4 S5 Turbo Injectors, called purple tops they can be faded to be nearly red at their age now tho. The part number on the side is 195500-2020. They are very good petrol injectors, high impedance, and flow 550cc/min, which is perfect.
This is were i have to work out, i´m still not shore, but the setup i have buy have the 8 injectors i will check later if they are 200cc or less, if 200cc than 8x200=1600cc, on the CBR they run 4 injectors up to 5500rpm than the second stage of more 8 injectos monted on the top start to delivery fuel some miliseconds before the ones monted after the IT`s, this is because this bike makes 15.000RPM, i want to do it same way, but need to do it correct.
Regardless of the 2 intake setups I have tried, I have always used staged, continuous injection. You just set the ECU to 2 injectors (even if the engine has 4), and depending on Megasquirt1 or Megasquirt 2 CPU you get it into a staged mode.
This means it fires 2 injectors (one for each rotor) and in staged mode it will fire the other 2 also at same time? i think it can be done also for 8 injectors
Also I would suggest NOT porting the engine, and using the TII intake, with a TII turbocharger as well. Injection and street porting does NOTHING compared to the power boost a turbo gives.
I will order this in short time, but tell me, if i plan to run like 8 injectors, should i need to buy more transistors to run it?
The easiest (and most expensive) way of fuel injecting the 12A is with a downdraft IDA manifold, and a 50mm ida style throttle body that has provision for 4 petrol injectors.
Already on the way, CBR600 RR 2004, 4 Itb´s with 8 Denso Injectors 12 holes each one
You can do fuel only, or fuel and spark. I have always controlled spark with Megasquirt. I would probably suggest doing this as well. The easiest parts list is.
The 12A N/A stock distributor is ok for this? or i need 1986 and up ?
Megasquirt 2 with V3.0 PCB kit
Extra LM1815N chip
Extra transistors and mosfets I said above
Series 4 Turbo RX-7 (approx build date 1986 to 1988) waterpump with standard water temp sensor.
Is this important? i can place a new sensor temp if need
Either IDA intake, or 1986 through 1991 RX-7 Turbo intake and ASK adaptor plate.
If you want to use ASK adaptor plate I suggest you also find a primary iron that has injector provisions in it. I would suggest factory 12A Turbo centre irons, or GSL-SE centre irons from America. You will need to check the bolt spacing differences for yourself.
For this i will make one intake to match the CBR 600 ITB´s
If you plan on going turbo buy the boost solenoid kit from the reseller too.
Regarding maps I have already posted my full setup map on this forum. When you understand the system well enough you will be able to understand the settings you are putting in.
Regarding injectors I would suggest finding 4 S5 Turbo Injectors, called purple tops they can be faded to be nearly red at their age now tho. The part number on the side is 195500-2020. They are very good petrol injectors, high impedance, and flow 550cc/min, which is perfect.
This is were i have to work out, i´m still not shore, but the setup i have buy have the 8 injectors i will check later if they are 200cc or less, if 200cc than 8x200=1600cc, on the CBR they run 4 injectors up to 5500rpm than the second stage of more 8 injectos monted on the top start to delivery fuel some miliseconds before the ones monted after the IT`s, this is because this bike makes 15.000RPM, i want to do it same way, but need to do it correct.
Regardless of the 2 intake setups I have tried, I have always used staged, continuous injection. You just set the ECU to 2 injectors (even if the engine has 4), and depending on Megasquirt1 or Megasquirt 2 CPU you get it into a staged mode.
This means it fires 2 injectors (one for each rotor) and in staged mode it will fire the other 2 also at same time? i think it can be done also for 8 injectors
Also I would suggest NOT porting the engine, and using the TII intake, with a TII turbocharger as well. Injection and street porting does NOTHING compared to the power boost a turbo gives.
Jobro, i want to say tanks for your replays, it is not my intention to take over your thread i´m just looking for help and information to get all the parts that i need to start this setup, i read and read many post/threads, it is like information is split in small parts.
After i have all items with me i´m going to start a thread with as many details as possible about my setup, maybe it will help others also.
Regards
04-26-09, 07:59 AM
#32
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I'm using the pod pipe, and a full 3" mandrel bent exhaust now. This muffler is hurricane branded, 10" long, 6" high and 20" long, and goddamn does it flow, sound nice and shut the thing up. It still has that angry rotary bark at higher revs tho. Of throttle it is near silent I LOVE IT. The pod pipe alone caused me to start overboosted in 4th gear at 4-5k rpm. Now with the exhaust the factory wastegate built into the s5 turbo is totally overwhelmed. I need an external, and I'm going to get one witha decent spring around 15psi!
It spools so fast now, with the 'full' 7.5psi on tap by 3000rpm in 5th, it just gets up and moves, I can't imagine what its going to be like with the intercooler, more boost and more timing!
05-04-09, 08:47 AM
#33
Click to view full size!
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Click to view full size!
Click to view full size!
Click to view full size!
Intercooler is nearly there!
05-04-09, 02:53 PM
#35
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Join Date: May 2002
Location: FL
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Good job! How did you get +12 to the starter and the nether frontal regions of the car? I went underneath the floorboard after mounting the batt in the L bin area. See attached. Using R bin area for water/meth tank, pump and accumulator.
05-05-09, 03:28 AM
#36
FINISHED! Its winter here, after a cruise warmup my Intake air temp in the cooler pipe was reading 25degC!!!!! This is whilst hitting boost here and there. My cooler is so big that cold road speed air doesn't seem to be able to heat soak it. Cold air into the turbo sure helps, as does the free flowing 3" exhaust. Overall I am ******* impressed I built this whole SHITBOX, and how fast it goes now!
I still have more mods planned (external gate!) and water injection, and better tyres on needed!
I still have more mods planned (external gate!) and water injection, and better tyres on needed!
05-06-09, 08:26 PM
#38
I use a positive pass through with the proper bit from OEX. Its just a plastic bung with a gold plated bolt through it and a nut on either end. The bung is threaded and has a steel washer looking screw to hold it in place. Negative atm is just wire with a bung in a hole, but I'm going to cut it and use a normal bolt through the body at that point eventually to stop the risk of the negative wire being cut by the car body.
05-06-09, 08:30 PM
#40
Cheers for the intake setup and tuning advice, plenum fits nicely as you see.
05-27-09, 08:40 AM
#42
Had 2 more goes on the 1/4mile. 2 new personal bests in a row, with a new MPH record for me!
Reaction: 1.421
60ft: 2.164
330ft: 5.846
660ft: 8.774
MPH: 84.14
KPH: 135.42
1000ft: 11.257
ET: 13.362
MPH: 103.76
KPH: 166.98
Reaction: 0.850
60ft: 2.458
330ft: 6.242
660ft: 9.197
MPH: 83.64
KPH: 134.61
1000ft: 11.688
ET: 13.765
MPH: 108.96
KPH: 175.35
Track Conditions for both runs approximately the same.
14,15deg,98,100%H,1018mB, 241RA,251RA, TT 22deg, TT 21deg.
Basically, the run with the high MPH I bogged the start getting used to the semis, people who watched the run from the sideline confirmed this and said launch with more revs. I finished that run in 4th at 8500-8800rpm I suspect, I did not datalog.
2nd run, new PB 13.362 @103.76MPH, My 60ft time was good, there is still approx 0.250 in that. I also decided mid run that it was a clean run and I wanted to shift into 5th to see if I got another MPH or so, but I mist 5th gear, and that is why MPH dropped even tho it was a beautiful run. I'm pumped and my new goal is 12.99. I don't plan on changing much setup wise to get there, maybe a proper burnout, lower tyre pressure, and fix a few little problems I have.
Reaction: 1.421
60ft: 2.164
330ft: 5.846
660ft: 8.774
MPH: 84.14
KPH: 135.42
1000ft: 11.257
ET: 13.362
MPH: 103.76
KPH: 166.98
Reaction: 0.850
60ft: 2.458
330ft: 6.242
660ft: 9.197
MPH: 83.64
KPH: 134.61
1000ft: 11.688
ET: 13.765
MPH: 108.96
KPH: 175.35
Track Conditions for both runs approximately the same.
14,15deg,98,100%H,1018mB, 241RA,251RA, TT 22deg, TT 21deg.
Basically, the run with the high MPH I bogged the start getting used to the semis, people who watched the run from the sideline confirmed this and said launch with more revs. I finished that run in 4th at 8500-8800rpm I suspect, I did not datalog.
2nd run, new PB 13.362 @103.76MPH, My 60ft time was good, there is still approx 0.250 in that. I also decided mid run that it was a clean run and I wanted to shift into 5th to see if I got another MPH or so, but I mist 5th gear, and that is why MPH dropped even tho it was a beautiful run. I'm pumped and my new goal is 12.99. I don't plan on changing much setup wise to get there, maybe a proper burnout, lower tyre pressure, and fix a few little problems I have.
