my type 4 2L in a notch build

[Munchhausen]

thats a lot of ign.adv.! Are you idling around 1100rpms?
The more i read here, the more i want to switch to gixxer TBs

munch

[supaninja]

1100 rpm is the cutoff where things get chunky, right now I got a good solid 1200 "idle". I got a really strong suspicion that it is caused by the injector angles, there isn't enough airflow and the fuel is pooling up in the heads and not able to be burned. The new manifolds will have the injectors in the same location/angle as the stock L jet end castings, I won't know until I try it. I did have the same issues when I was running the L jet intake, but I think those idle issues were cam related. Above 1100 everything is good. I've played with the timing and this motor just wants a lot of it, ran nice and cool all summer (hottest one in 100 yrs here), and my plugs don't show any signs of detonation so I'm giving it what it wants.

[Munchhausen]

Would think the idle thing is caused by the shortness of the runners. Know that phenomenon from the short stock type3 runners with the two carbs in combination with hot cam. Some say that just longer ( 4-5cm longer) runners would help alot. But that carbs ?
But maybe the injectors to big for good idle? And the old djet injectors were to bad in atomisation?
When you thinking of new runners you maybe should go around the curve like the djet ones, and mount the TBs in a horizontal way. Than the length is comparable to what the bug-guys have.
By the way this could give the option of a staged inj. with the two injector locations more away from each other.

munch

[supaninja]

it might be the short runners. The injectors I'm running right now are 185cc, same size as the Ljet. I'm keeping them down draft, but if the new inj location doesn't work out then maybe full sequential will work. I'm feeling pretty confident that it is the bad injector angle.

[Piledriver]

Probably that and lack of sequential, combined with quite a bit of overlap, likely to only help to a certain point.

MS2/3 sequential and the timed MAP readings (esp MS3 version) would likely clean it up a lot, but probably not perfect.

[supaninja]

Back to running stacks:



And here is a close up of the 00-03 gsxr 600 pulley that fits like a glove on the 04-05 TB's

[Steve Arndt]

Does your #2 valve cover, and chimney, both hook to your pan e vac setup?

You need some stubby coils, those things are honking long.

I'm running 380cc/min injectors N/A. I'm just starting to play with the sequential injection start angle. I'm working on getting the base tune as good as I can before I start "playing" with the fine tune stuff.

Can you post a pic of your #4 throttle cable pulley, the cross over one.

s

[supaninja]

I got the case breather, and both heads tee'd together to the evac. I have been meaning to plug the heads off, keep forgetting to get some 1/2" caps...doesn't cause me any problems as is.

I know right. I need to get on ebay and get the shorter version (2000-2003 gixxer). speaking of which, I had a little dejavu when I saw this http://www.aemelectronics.com/ignition- ... -coils-20/ They want $60 a piece, I got all 4 of mine for $10.

I'm guessing you want the pulley on #3, I dug up this pic. It's just the stock gixxer stuff, no point reinventing the wheel



The top cable comes from the go-pedal, the bottom goes to 1/2 side.

[Steve Arndt]

So to place this in concrete, what year cable pulley is that?

Did you see the gsxr 600 coils I have posted in my Redline thread? I can sell those cheap since I don't need 'em. I have since learned that the same 2 wire Denso coil from the honda cbr is shorter than the same coil in gsxr from 2006. The IGN1 coils that I am using are over three times more fowerful than any COP available that I've seen, so I'm staying CNP for now. Plus the upswept baja exhaust is only an inch from a COP.

[supaninja]

I'm currently using 04-05 gsxr 600 TB's

3/4 side (the above pic) is a 04-05 pulley
1/2 side is using a ever-so-slightly modified 01-03 gsxr 600 pulley

the 06-07 gsxr 600's used a round 1:1 ratio pulley and are different. I sent one to Dev to make a copy of it.


The 01-03 gixxers used the shorty stick coils too. that link to the aem pencil coils shows the differences between the earlier shorties and the later long ones, they are all the same denso coils. I'll keep that in mind about the cnp's.

[Soul]

Nick, are those stacks 48 IDA's?

[supaninja]

Nope, they are 45 DCOE stacks. They are extended as far as I can extend them with those 1.5" length silicone couplers.

Steve- I have a set of 40mm 06-07 TB's sitting here. If you reverse one of them then you can have the pulley's on the same side, either stealth with the pulley's in the back of the engine bay or bling and have the pulley's in the front for all too see.

[supaninja]

So I have been playing with my foundry and made my first useful part:



It replaces the access cover on my frame head and I'm going to mount the walbro to it.

[supaninja]

I'm going to try a set of 40mm 06-07 gsxr TB's to see what the difference is in power and the vac signal. the 06-07's have a non-progressive pulley so I asked Devastator if he could make one...turned out perfect!

[aircooledtechguy]

I'm diggin' the progress. . .