New BS6 Hima 477 design plan using the 440 ECU/TB
- Thread starter sam2019
- Start date
After an eternity I finally got notice that ONE of the two 440 TBs has now reached Delhi. That means our friend from Greece will be the first guinea pig for that configuration.
I was hoping to be able to fit the second to my own Hima 500 but no such luck. They say one to two more weeks but I do not hold my breath...
I was hoping to be able to fit the second to my own Hima 500 but no such luck. They say one to two more weeks but I do not hold my breath...
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You can delay the delivery to me, and get the first one for your himmi 500 !! im a team player !
(My toddlers have just finished kindergarden for summer vacation, which makes my life VERY hard to do modifications until august and summer camp !! )
I wont be able to do any work on the bike until the beginning of august for sure !
(My toddlers have just finished kindergarden for summer vacation, which makes my life VERY hard to do modifications until august and summer camp !! )
I wont be able to do any work on the bike until the beginning of august for sure !
thanx! I'll take you up on that offer
What is the diameter?
35.5 and 33mm depending on the side
I am waiting for the results with great anticipation !!!!
Mechanic is working to replace the 411 with 500cc cylinder, the 440 TB fits like hand in glove - I was a bit apprehensive bc I measured a different inside diameter from the 411 TB but the outside is the same.
That 500cc set had been used previously for about 10k km so no break in, I can do the full speed tests. This setup has the OEM cam and the OEM exhaust with cat. I m curious how it performs compared to the old setup with ht-b cam and decat exhaust.
That 500cc set had been used previously for about 10k km so no break in, I can do the full speed tests. This setup has the OEM cam and the OEM exhaust with cat. I m curious how it performs compared to the old setup with ht-b cam and decat exhaust.
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Awesome! Hopefully the new TB will be able to handle the cc increase and performance boost should be significant!
OK, good news and bad news:
Good first: bike starts and runs great, first 30 seconds tends to stall but after runs without stalling.
Not driven yet but accelerates thru the rpm very lively. will test drive when rain stops.
runs better with fuelx pro on 7 or 8
Bad news: yellow engine light on permanently. tried 2 OBD2 adapters, one bluetooth, one direct connect, both give same readout, an error I have never seen before. This error can not be deleted from memory or it will immediately re-appear, tested 2 reader and 2 sets o cables so not a hardware issue.
disconnected fuelx - same result
Good first: bike starts and runs great, first 30 seconds tends to stall but after runs without stalling.
Not driven yet but accelerates thru the rpm very lively. will test drive when rain stops.
runs better with fuelx pro on 7 or 8
Bad news: yellow engine light on permanently. tried 2 OBD2 adapters, one bluetooth, one direct connect, both give same readout, an error I have never seen before. This error can not be deleted from memory or it will immediately re-appear, tested 2 reader and 2 sets o cables so not a hardware issue.
disconnected fuelx - same result
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Back from the test run:
Bike ran well, not very well as I am used to from the 500 with PT and performance cam but well enough, certainly stronger than the 411.
Some problems though.
During the extended test run (80km) I had to stop at train crossings and other places where I needed to cut the engine. It was often necessary to repeat the starting procedure multiple times before the engine came on. After a while I figured out a trick, on/off 3-4 times the cut-off switch and starting worked like a charm. Reason being each time the fuel pump starts it injects fuel for a second into the TB. It shows that the engine was starved of fuel.
Running thru the gears felt like the engine did not get quite what it needed. a certain reluctance at almost all rpm.
Keep in mind this is comparison to a 500cc with well tuned PT and fuelx pro and cam and decat exhaust. but still.
If I where to take this further (which I wont) I would get the KENT cam (better than ours but also way more expensive) to allow for more fuel (higher lift and longer duration) and possibly reduce to 477cc (from 500). More displacement is only good if the overall tuning is done well. With 500cc it seems the 440 ECU is a bit out of its league - 477 only is 37cc more - 500 is 60. That could make a big difference.
I would also try to fix the engine light issue - starting with a new o2 sensor (I asked my dealer but no stock ...)
I played with the Fuelx Pro. it is the "wrong one" not optimized for the 440 ECU but for the 410 ECU. I do not know how much of a difference it makes but Racedynamics support told me "big difference". Maybe they are honest, maybe they just wanted to sell another gimmick.
There seems no big difference from 7 upwards. I ran it in 7,8 and 10, did not feel any difference. But without it the engine runs clearly worse.
Now, they say the ECU "learns" and this is true for the TB/ECU as well as the Fuelx. Especially the fuelx uses this as their main selling point. So if I drove the bike for a longer time thing may smooth out.
Now the ball is in @brotherpaul1911 court and I am very curious what his experience will be.
Bike ran well, not very well as I am used to from the 500 with PT and performance cam but well enough, certainly stronger than the 411.
Some problems though.
During the extended test run (80km) I had to stop at train crossings and other places where I needed to cut the engine. It was often necessary to repeat the starting procedure multiple times before the engine came on. After a while I figured out a trick, on/off 3-4 times the cut-off switch and starting worked like a charm. Reason being each time the fuel pump starts it injects fuel for a second into the TB. It shows that the engine was starved of fuel.
Running thru the gears felt like the engine did not get quite what it needed. a certain reluctance at almost all rpm.
Keep in mind this is comparison to a 500cc with well tuned PT and fuelx pro and cam and decat exhaust. but still.
If I where to take this further (which I wont) I would get the KENT cam (better than ours but also way more expensive) to allow for more fuel (higher lift and longer duration) and possibly reduce to 477cc (from 500). More displacement is only good if the overall tuning is done well. With 500cc it seems the 440 ECU is a bit out of its league - 477 only is 37cc more - 500 is 60. That could make a big difference.
I would also try to fix the engine light issue - starting with a new o2 sensor (I asked my dealer but no stock ...)
I played with the Fuelx Pro. it is the "wrong one" not optimized for the 440 ECU but for the 410 ECU. I do not know how much of a difference it makes but Racedynamics support told me "big difference". Maybe they are honest, maybe they just wanted to sell another gimmick.
There seems no big difference from 7 upwards. I ran it in 7,8 and 10, did not feel any difference. But without it the engine runs clearly worse.
Now, they say the ECU "learns" and this is true for the TB/ECU as well as the Fuelx. Especially the fuelx uses this as their main selling point. So if I drove the bike for a longer time thing may smooth out.
Now the ball is in @brotherpaul1911 court and I am very curious what his experience will be.
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The cc difference between the 440 and 477 is the reason I opted for the kit and not the 500. Anyways when I receive my package starting beginning of August I will try out the conversion and update with my experience. I do have the Kent cam decat system DNA filter and Hitchcock aftermarket valves. We ll see.
