so what youre saying is that you want to run again? Im game
im into this! im doing the same swap right now! i have carbs and motor... where did you buy the 16v intake flange?
Get your shave bays not faces shirt today!
if nothing else, contact Weir tec for flanges.
Pics from yesterday
Okay, I was slightly torn on doing carbs... but after seeing the dyno and the $$:HP ratio on this, I'm down.
How large did you say you drilled your jets? And just to make sure I read everything right... 100% stock ignition, correct?
Someday soon my friends, this ride will come to an end - but we can't just get in line again.
well i havnt hooked up my WOT switch yet which will give me more ignition advance. so there is still more power in this setup as it sits. But yes, 100 stock ignition except I havnt hooked up the throttle switches yet.
The jets i will have to get back to you on that, its written down somewhere in another thread
A bit of an update:
No photos of anything lately as I broke my digital camera. However monday my new one should arrive (kodak z981) so expect some fancy shots of whats new.
Also arriving this week: some gauges so I can keep an eye on things. First one is a VDO Vacuum gauge, in the Vision style. I had the VDO Boost gauge in this style back in my old mk3 2.0t, and I loved it.
I am going to add vacuum ports to cyl's 1-3 so that i get a reading from all 4.
Next is a Innovate MTX-L Wideband (3844 is the kit number i ordered, 3845 I believe is the same thing except for short wiring for use on powersports vehicles like motorcycles, besure to not order that one)
I will be doing datalogging with the Logworks included with the Wideband, so we can get some real numbers on what the carbs are doing a/f wise. It also works on all fuel types, which may come in handy with some future plans I have
44.3mm ITB's with mechanical fuel injection, belt driven fuel pump.
Last edited by yeayeayea; 11-25-2012 at 04:46 PM.
heres an ebay listing for the exact setup I have, and all he has is the throttles themselves, no pump or brackets!
he is charging an extra 170 for a pump
From the listing
as for the mechanical injection stuff, i dont know yet. it would require a lower manifoild to adapt the itbs to the 16v head. or I could get a set of gsxr ITB's and just use the fueling from this setup.
The Hillborn setup would look awsome installed, but do you think you'll get any gains over the R1's? Its supposed to control fueling by varying fuel pressure, which...... is....... exactly how the stock CIS works, right? Looks great and I really want to see where you take this. I've been knocking around the idea of carbs and your thread has been inspirational.
The only power would come from them being 44mm throttle bodies vs the 38mm throttle bodies on the cbr carbs. These hilborn throttle bodies were designed for a ford pinto 2.0L engine, so the displacement is pretty much the same.
So I didnt get to take any pictures of the car today, as I forgot my camera at home. However, I did get my recently repaired header back on, and installed my wideband. I am pleased to say that while the old narrowband AF gauge would read very lean at upper rpms, the wideband is showing steady high 13:1, low 14:1 all the way up to 8k. I dont know if the narrowband was getting a bad reading at upper rpms, but the new wideband does not have any problems. lower in the rpm range the a/f was in the 12:1 range, and cruising was in the 15:1 to 17:1 range.
I will try to take videos and some logs once i have some spare time. The throttle cable broke on the way to a gtg today, so it is pieced together using a choke cable. Once that issue is resolved I will be able to get some videos put up
No. It is not. CIS is Pulse generated. Hilborne is metered by metering jets much like a throttle position switch. the pump is no different then a power steering pump, making reliable PSI versus a block mounted mechanical pump using an eccentric or push rod.
I will say I have very little idea how the hilborn stuff works, and I doubt I will ever run it. But it is cool oldschool race parts that I saved from going in the trash
was going to take some video of the car today but the rigged throttle cable is preventing me from doing so
Last edited by yeayeayea; 04-25-2011 at 08:14 PM.
So its time to make a new throttle cable, since my bicycle brake cable finally died.
I am using a honda hood release cable, as it has the right size barrel end for the cbr900 carbs
It has a barrel on one end and a ball on the other, i cut the ball off
next I cut the J hook off the stock cable, and drilled out the cable that was left crimped inside it
Here is what ends I will have once I determine my length
hopefully tomorrow I will cut it to the right length and crimp and solder the j hook on and have a nice new throttle cable with no cable clamps anywhere
Also, now that I have my wideband hooked up I was wondering what A/f's i should be shooting for? Im in the 14's right now, but from what ive been reading the optimum a/f is in the high 12's to low 13's range.
Guess it is time to play with needle jet settings