My bike is stock street going nsr, It came with fancy HRC chip a harness that looks like it is used to remove signals and lights I also have a plate that looks like it is used to remove oil injection? Is that something I need to do to use the fancy card? where might I find info on that conversion.
The HRC harness is intended to be used with the HRC PGM card. The HRC harness removes all the street equipment and assumes you will use pre-mix. That is the reason for the block off plate. I am from Kenwood originally but live in SF now. You are welcome to come down and see my 28 with the same equipment on it. I could do the conversion for you if you like.
There is a lot of other items to consider if you want to run the HRC harness, too many to list and talk about here. If your bike is stock it is "restricted" at the factory. You'll have to address more than the card and harness to fully benefit from the modification.
Where did you find your 28? Is it licensed? What number is the card 010, 020 or 030?
Look in the Tuning section of this site under Ignition for details on HRC card.
My boss used to work for Nissin the bike and parts were given to him by HRC/nissin with the intention of it being converted for track use. bike is NSR 250 r 2t and was used by nissin to do brake tests. what do I need to do to find out what other limiting factors might be built into the motor. Ill check card number when I get home.
Andreb - it's actually my bike still, until Justing coughs up the big coin! I have a shopping bag full of HRC goodies and DogFightR pipes. We had run this bike some in stock trim at our Tochigi test site, but very few miles on it. Much of the HRC stuff was given to me as a "going away" present, so I'm trying to find a proper description of the full race kit.
The card is the 030 card, by the way.
Justin - hurry back - you've got a lot of work to do LOL!
Well, you can do a lot worse that "just" going the 1994 SP250 route:
HRC card + harness
HRC jet kit (& pre-mix)
HRC intake rectifiers
HRC airbox (or just open carbs)
HRC front head
Race pipes (aforementioned DogFights will do the trick!)
All that will (should!) produce a healthy, extremely tractable 60~62hp for a tight but otherwise standard MC28 motor.
The above is Fontyyy's as tested in this spec a couple of years ago, but with a stock airbox, no lid, and stock filter wired into place. It's typical of the listed modifications (with an 030 card). To get anything more substantial out of motor it will require internal modifications, however I seem to recal Fontyyy's made another 1.5hp or so and revved a couple hundred RPM higher with open carbs, which just proves that you need to do exactly what the HRC books say to make the parts work efficiently! _________________ Andy.
NSR-WORLD.COM
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Tomorrow, or after the first of the year, I'll download pictures of all the goodies. As a newbie here, is there a place to put .jpg files? If not, I'll just upload and post a link.
Welcome to the list! You can link images in your post to external hosting services or you can become a paying NSR-World member and add photos within your posts (I am pretty sure).
If you are local (SF, Bay Area) you can stop buy if you like and see my MC28 with a similar set up that Andy's described. PM me if you'd like to exchange contact info. Sounds like a great going away present!
Cheers, _________________ Andre E. Benguerel
1996 Honda NSR250R
Daijiro Kato/Fortuna Replica #74
Go and read the carb tuning section, then see what you think you need to ask!
There's plenty of advice to be had on here, but we help those who help themselves! There's no point in continually repeating what's easily researched with nothing more than a little time reading published information... on this very website!
As for the airbox.. you're wasting your time with it if you are racing. As I've already said, use the HRC kit completely and as intended, or you will not realise it's benefit. _________________ Andy.
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No lid though. It was basically just being used as a way to hold an air filter in place... so a low capacity version of the HRC airbox with an added restriction!
Some could argue for the increase at 10400rpm, but Fontyyy's racing and should be happier with the 2hp gain at peak, which is more important down the back straight! No point having a lightweight fast cornering chassis that can't hold it's own down the fast bits!
I've seen first hand what a few HP does in the top gears. My MC21 will easily reel in just about any 250 on the street, and remember it even out-dragging your F3 Steve, but hooking 5th and seeing you come past (at about 6" from me!! ) like I was going backwards wasn't funny!
Well, OK, it was pretty funny actually! _________________ Andy.
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Yup, I've never been very good at getting on the power.
Hp makes all the difference once you start clicking up the box though.
Infact though your motor is almost identical to mine in the bottom and middle, I think it even had a touch more down around the 6K mark. Mine has to pull a fair bit more weight mind lol
You need to have a go on the latest incarnation. _________________ If I have to take the carbs off once more...
I'm down to an almost feather-weight () 87kg now! Even with our HK armour plating though, the F3 was/is considerably lighter than mine -- even Fonyyy's Fontyyyboro is noticeably lighter, as he likes to remind me every time he moves mine!
I think it was pure HP really, the weight probably worked out pretty similar back then. There wasn't as big a gap in the HP back then either, maybe 4 or 5hp? But that's the point about a couple of peak horsepower -- it made me look silly in the top gears! (Well, sillier than I normally look!) _________________ Andy.
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Andy wrote:Go and read the carb tuning section, then see what you think you need to ask!
My apologies - I mod on another board so I should know better. I'll re-read the carb section; really, it's just the blocking pins that I didn't see mentioned, and for some reason I have 4 of them, not 2
There's plenty of advice to be had on here, but we help those who help themselves! There's no point in continually repeating what's easily researched with nothing more than a little time reading published information... on this very website!
note to self - improve search skills...There is really only one item I haven't been able to find - if running premix, does someone have a plate to remove the oil pump?
As for the airbox.. you're wasting your time with it if you are racing. As I've already said, use the HRC kit completely and as intended, or you will not realise it's benefit.
That's the plan. There are a few things I don't have, or are missing (it was free, so who am I to complain). Stock airbox - no HRC box, no radiator pipe or HRC front cylinder head, no HRC manual.
Again, thanks for all the help and support - great site!
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) like I was going backwards wasn't funny!