what to do with this

johnymd

Club Member
I also had a good day of "data logging". I'm back to using my old paddle clutch from when I first did the 1jz conversion in 2010 and I remember the problems I had with it back then. I spent over a year stuck in the low 12's and that's pretty much where I am now. I remember the only way I could get past the 12s block was to change to an organic clutch and slip it off the line to keep the car on boost.

I will continue to persevere with the current setup and try and master it until the twin plate organic is available (6 week wait). I don't want to kill the paddle as I did a few weeks back. I think its just a case of lots of practice to find the right launch. My 60's were all in the 2.2-2.5 second range which is pretty poor considering I was down to 1.65s with the organic.

Despite all this, the car is running very well and crisp all the way to redline. The terminals are a little confusing though as it indicates my power levels are no more than with the twins and factory ecu although that was with nitrous. This could well be down to high intake temps and the ecu taking out some spark to compensate for this. I will be analysing the logs from the day to see where I can gain a bit of power. Plus looking into water injection as a way to tame the temperature's a bit. I always remember how nice the car ran on nitrous with the cool charge. Maybe I can get some of that back with the water injection and not have the pain in the butt of getting the bottles filled up.

Impressive terminals from Wyn which shows there's much better times to come. Quickest times are with Terry, even with a very slippery track. The track got worse as the day went on so it became harder to improve the times as the day went on.
 

johnymd

Club Member
Yes Wyn, it is nice for the 3 of us to be out competing again. Makes a good day of it and puts on a good display of the cars. Cant wait for the next and hopefully it will bring a few more out.

It was good to see Jon Bills along to watch and nice to see Mike out and running his 370z. Dare I say a resurrection of the regular drag meetings from the 80's?
 

Wyn

Club Member
Let the good times roll :D
 

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Mark N

Club Member
Had another good day at japshow santapod today well suprised to see Wyn there i didn't get my 10 second car today but 11.2 was the best all day i wont ramble on but i used the car hard today after seeng Wyn put some of that awsome power down vids to follow

Great result and you're not far off the 10s!
Nice pics and vids from the day too, I'm guessing the three old hybrids put a lot of newer cars to shame!
 

tel240z

Club Member
Well the injectorz are out and the number that i have on them is 01d030b a quick search implies there 42lb and converts to 440cc although i need to confirm that
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johnymd

Club Member
Do you know what the standard M3 injector size is. My logic being that at 1bar you will be using twice as much air as the standard engine when N/A. Therefore you will need twice the amount of fuel to retain the same AFR and have the same safety margin as the factory injectors. I'm guess the factory would be around 300cc so if it was me, I'd go for 600's.
 

tel240z

Club Member
It would seem John that the stock injectors are 247or 257 so on the basis of doubling the amount of fuel i need at least 500 cc ones so mine at 440 cc confirms what my R/road man said, so your recomendation of 600 John looks bang on just need to see whats out there

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Moriarty

Well-Known Forum User
You need to balance injector size with the duty cycle

No point in having small injectors running at 90%......or conversely large injectors running at 10%

Aim for 70 - 80% max duty cycle to give some head room
 

tel240z

Club Member
Spoke with my tuning man today and he highly recomends injector dynamics as the prefered manufacturer, when we discussed size and i suggested 600cc he suggested 760cc so i done some research and we both agreed on these at 725cc they have great reviews everywear
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tel240z

Club Member
Yes John glad to see your paying attention, and the nice man from Bosch supplied nice new plugs and pins to re wire onto my harness
 

tel240z

Club Member
11.5 128 mph
11.4 124 mph
11.25 127 mph
11.6 125 mph

All quite consistant

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johnymd

Club Member
For comparison on the same day and conditions.
130.55
124.92
128.81

As I guide, I was running in the 132's with my stock twins and factory ecu :(
 

tel240z

Club Member
Well it's been a while since I've been on here, but hopefully I'm back, been a little busy doing things to the Z and got a bit to busy at work damm companies having to spend there budgets before the end of the year anyway the BMW powerd car has had a nice syvecs Ecu, bigger pump, to go with them nice big injectors and a host of other goodies including a nice new set of tyres which I thought were hard to get but possibly got lucky at £380 for all 4
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