bngt
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Posts: 202
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Post by bngt on Jul 25, 2016 22:55:55 GMT 1
Now it is time for the swap.
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bngt
Drag-strip hero
Posts: 202
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Post by bngt on Jul 25, 2016 22:56:51 GMT 1
250 out!
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bngt
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Posts: 202
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Post by bngt on Jul 25, 2016 22:57:34 GMT 1
421 in!
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bngt
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Posts: 202
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Post by bngt on Jul 25, 2016 22:58:53 GMT 1
I put the torque links rearward.
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bngt
Drag-strip hero
Posts: 202
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Post by bngt on Jul 25, 2016 22:59:18 GMT 1
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bngt
Drag-strip hero
Posts: 202
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Post by bngt on Jul 25, 2016 23:00:04 GMT 1
Keihin 34
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bngt
Drag-strip hero
Posts: 202
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Post by bngt on Jul 25, 2016 23:02:39 GMT 1
I probably combine with 1% premix
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bngt
Drag-strip hero
Posts: 202
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Post by bngt on Jul 25, 2016 23:03:55 GMT 1
I proably combine with 1%premix
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bngt
Drag-strip hero
Posts: 202
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Post by bngt on Jul 25, 2016 23:06:38 GMT 1
Radiator cap from the 350.
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Post by yazza54 on Jul 26, 2016 12:56:41 GMT 1
I proably combine with 1%premix
Why? Is it not one of arrow's 421 pumps?
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bngt
Drag-strip hero
Posts: 202
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Post by bngt on Jul 26, 2016 15:12:38 GMT 1
No but I would be interested in one. Cheers
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Post by yazza54 on Jul 26, 2016 15:32:43 GMT 1
I think the 421 pump delivers something like 18% more oil so quite a difference
To me it defeats the object running a pump and oil in the tank, may as well have your pump modified to do the job and it's easier and safer all round then
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bngt
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Post by bngt on Jul 26, 2016 18:57:42 GMT 1
Agree. I was just busy getting her together. Still adding 1% to the pump is better than running 3% premix on idle.
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bngt
Drag-strip hero
Posts: 202
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Post by bngt on Jul 26, 2016 19:01:22 GMT 1
Start up accomplished!
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bngt
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Posts: 202
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Post by bngt on Jul 26, 2016 19:06:03 GMT 1
Many small things to fix. I spent several hours just to get the side stand to fit between shift linkage and the new pipes. I am also considering whether to add a vacuum spigot for the fuel tap or put individual taps for on and res.
It is also damn loud, especially if you have to stand and rev it at 5000 just to clear out the oil. Still I think I need better silencers. What is out there that could help?
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Post by yazza54 on Jul 26, 2016 20:33:27 GMT 1
What no video?? Dunno, you don't really want to be restricting it too much. I think kenny was working on some quieter silencers at one point not sure what happened with that. It's probably always gonna be pretty loud though.. Mine has the alloy cans
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bngt
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Post by bngt on Jul 26, 2016 21:08:53 GMT 1
I'll post a video tomorrow. Need to sneak out of the village, not at night. Maybe when I can have some idle and rev it less. Now it was filled with the assembly lube from when I built it this winter and cold and raw, so no idle. I hope it will be possible to start without choke, since they are damn difficult to reach.
Difficult to judge from a video but yours sound less sharp. Awesome sound from the dyno. Seem to be well sorted.
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bngt
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Post by bngt on Jul 27, 2016 12:51:24 GMT 1
First test run. Started well without choke, so probably I don't need to make a remote control. Idled immediately and evenly at 1500 despite I haven't touched the idle knobs. Rode off with quite som spluttering, didn't want to make to much noise by revving. Got out on a country road and opened up a bit. There is a big hole at 5000rpm and half throttle. Gave it full and it passed the hole and at 7000 it really hit home and wheelied off. I shifted gears and was looking for seventh when I realised I was doing 200km/h. Wow! This was quite an experience. Somehow it feels more exciting than approaching 300 on the GSXR.
When I braked I found the brakes to have become more effective than usual. No wonder, the fender was squeezed between the wheel and the radiator! Stupid of course. I only checked with a quick bump in the garage. I have 30mm on the fork to lower but need to raise the rear to fit. I guess I should shorten the linkage. How much?
Then I ran out of fuel and had to walk 2km home.
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Post by yazza54 on Jul 27, 2016 14:45:44 GMT 1
Haha oops!!
Whilst it's good that it started without choke I think that normally points to it being a bit rich on the pilot/air screw
Mine has taken a long time to get somewhere near right and still playing with it
Assume you're going to get it on dyno?
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bngt
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Post by bngt on Jul 30, 2016 21:51:27 GMT 1
Yes, I wll dyno in time. I did expect it to work fairly well since it is pre-jeted by Wicked and it is his kit completely. Then of course there could be differences due to expansion chambers.
I am impressed by the compression resistance when kicking, nice and firm.
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bngt
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Post by bngt on Aug 4, 2016 23:17:59 GMT 1
Raised the front and cut off the damaged part of the fender
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bngt
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Post by bngt on Aug 4, 2016 23:19:59 GMT 1
Raised the rear with Projection doglegs. Now I need a chain slider. You can't change one thing without affecting something else!
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bngt
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Post by bngt on Aug 4, 2016 23:21:23 GMT 1
Next is to test internal stinger to minimise the noise.
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bngt
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Post by bngt on Aug 4, 2016 23:23:32 GMT 1
I hope the difference in noise will be similar.
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bngt
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Posts: 202
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Post by bngt on Sept 10, 2016 18:23:36 GMT 1
I have shifted to new internal stingers now. I have also put an Arrow uprated pump on the bike. Still some adjustments to make. I will put separate ball valves on the fuel lines and I have to extend the side stand. Tomorrow we try again :-)
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bngt
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Post by bngt on Sept 10, 2016 18:25:10 GMT 1
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bngt
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Post by bngt on Sept 18, 2016 21:37:29 GMT 1
Lots of problems, most sorted now.
I had no drive between 2000rpm and 7000rpm. I was blaming jetting but in the end I found that the ignition was faulty. The loom had been cut and mended however the resistance values were correct. I had another generator plate so I switched and it started and worked well immediately. One week wasted!
The internal stingers were quieter but it is still quite noisy.
Now I have to jet my PJ 34s. They were pre-jetted by Roger with:
Pilot Jet 62, I changed to 60 but will need to reduce further.
Needle CEG (standard) clip in 4th from top. I lowered to 1st and it helped a lot and half throttle seem ok now but 1/4 is still rich. I am considering other needles like CGL
Main Jet 168
If anyone else with 421 and PJ 34s or similar has a recipe I am all ears.
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bngt
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Post by bngt on Sept 26, 2016 21:06:50 GMT 1
I don't know if anyone is interested but anyhow here is more about my jetting progress.
Pilot Jet 55 still too large at air screw 1 1/2. Needle CEG middle clip. With smaller pilot jet I could raise the needle back a bit. Main Jet 165. I reduced a bit and it runs well at full throttle, but I'll need to do plug chops or test with oxygen sensor to know.
I am not sure how much I could/should rev. I try to stay under 10 000rpm which equals about 200km/h. I have ordered 37 rear sprocket instead of 41 so that I can get it better loaded.
Then I have a quick shifter from Borut in a box to put on when time permits.
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Post by muttsnuts on Sept 26, 2016 21:37:18 GMT 1
nice, getting there
I have 52 pilots and 165 mains (still a bit rich on main jet) but safe and running an ignitech, decent curve in it, but my pipes are holding it back a tad, I have my rev limiter set at 10500rpm, peak power is at 10200rpm, but again, that's due to the pipes, some new pipes will see that come down to around 9500rpm hopefully as I want to save the crank a bit !
I am running 2.65 primaries and an 18 front sprocket, that has calmed it down a bit, but its still bonkers and hits stupid speeds really quickly - in an LC frame that tends to focus your attention !
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bngt
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Posts: 202
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Post by bngt on Sept 27, 2016 21:42:01 GMT 1
Thanks muttsnuts! I really needed some feedback. Tried 52s today. Much better but still four stroking up to 90 km/h. I have ordered smaller jets for next week. I guess that my peak is around 10200 rpm too. The real rush comes at 8000rpm. The TZR chassy is very impressive and feels perfectly stable at speed. Very different from my stock F2.
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