Hi everyone!
I'm new to this forum but have been reading a bit the last couple of days to gather some info on the NSR 250. Now it's time for my first questions

I bought a MC21 engine yesterday that I'm planning on putting in my superkart. It's mostly going to be used as a toy but hopefully I can get access to a track to do some training and let it stretch it's legs.

The engine was complete except for exhaust, airbox and wire harness. So now I'm gonna try to get this thing mounted and most importantly, started

To begin with, I would love if someone could verify what the different cables/contacts on the engine is. Just so I don't do anything really stupid.

Overall engine shots:
http://www.jonatanfoto.se/Superkart/Motor1.jpg
http://www.jonatanfoto.se/Superkart/Motor2.jpg
http://www.jonatanfoto.se/Superkart/Motor3.jpg

RC-servo:
http://www.jonatanfoto.se/Superkart/Motor4.jpg
http://www.jonatanfoto.se/Superkart/Motor5.jpg

Thermostat housing:
http://www.jonatanfoto.se/Superkart/Motor6.jpg

TPS:
http://www.jonatanfoto.se/Superkart/Motor7.jpg

GPS:
http://www.jonatanfoto.se/Superkart/Motor9.jpg

Two connections that I don't know much about, I'm guessing one is for the ignition to the engine and one is the pulse generator?
http://www.jonatanfoto.se/Superkart/Motor8.jpg
http://www.jonatanfoto.se/Superkart/Motor10.jpg

PGM III:
http://www.jonatanfoto.se/Superkart/Motor12.jpg

I anyone could confirm that all the stuff is what I think it is, that would be great.

So the way I see it and hope, all contacts/sensors are there and what I need is the harness to connect everything to the PGM, is that correct?


I have found a HRC-harness that I can buy but I haven't really understood if that's all I would need? Does the HRC-harness replace the stock harness or would I still need parts of the stock one?

This is the kart I'm using it in:
http://jonatanfoto.se/Superkart/DSC03738.JPG

Many thanks in advance!
Mvh
Jonatan

Reckon you're spot on with those.

re the generator and pickups, the block with four white wires in is the genny, and the other is the pickups.

The HRC loom is all you should need, as it is designed to work on a race bike i.e. one with no lights.

Can't we tempt you to build a proper NSR with it?

Dave Ett wrote:Reckon you're spot on with those.

re the generator and pickups, the block with four white wires in is the genny, and the other is the pickups.

The HRC loom is all you should need, as it is designed to work on a race bike i.e. one with no lights.

Can't we tempt you to build a proper NSR with it?

Thanks! Pickups? Don't know if I follow you on that one, what are those? And the generator, do you mean the pulse generator or the AC generator? :/

Also, I can't find any regulator/rectifier on the engine that is in the wire diagram. Is that something I need?

So the HRC loom completely replaces the stock loom? Just so I don't need to buy a stock one as well just to slaughter.

Lol, you don't have to tempt me, I'm very tempted. But If I put the engine in the superkart, and collect NSR-parts for a year, then I'll just have to do a simple swap to get the engine into the bike

Thanks for your help once again!
// Jonatan

The HRC harness also needs the HRC delimiter (that plugs between the harness and one side of the PGM-III), or you could "splice" the HRC harness, but that would be criminal! You would also need another PGM-III plug to wire in, and it will all start to get very messy!

All the HRC harness is is a stock one with all the road wiring (lights, horn, indicators etc.) stripped out, two grey (Honda Civic style) plugs, and one PGM-III plug at the ass-end. (The stock harness has 2x PGM-III plugs of course.)

Apart from being stripped of the road-going wiring, there is nothing special (i.e., no different connections) between the two harnesses.

The reg/reg normally bolts to the NSR subframe, and often comes with a used stock harness. You can get pattern ones from Electrex or various other suppliers for about £40~60. I seem to recall off-hand that a VFR400R (NC30) has the same fitting too, and it a little "beefier", but someone else will need to confirm my sometimes cloudy memory!
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Andy wrote:The HRC harness also needs the HRC delimiter (that plugs between the harness and one side of the PGM-III), or you could "splice" the HRC harness, but that would be criminal! You would also need another PGM-III plug to wire in, and it will all start to get very messy!

All the HRC harness is is a stock one with all the road wiring (lights, horn, indicators etc.) stripped out, two grey (Honda Civic style) plugs, and one PGM-III plug at the ass-end. (The stock harness has 2x PGM-III plugs of course.)

Apart from being stripped of the road-going wiring, there is nothing special (i.e., no different connections) between the two harnesses.

The reg/reg normally bolts to the NSR subframe, and often comes with a used stock harness. You can get pattern ones from Electrex or various other suppliers for about £40~60. I seem to recall off-hand that a VFR400R (NC30) has the same fitting too, and it a little "beefier", but someone else will need to confirm my sometimes cloudy memory!

Huge thanks!

Andy wrote:The HRC harness also needs the HRC delimiter (that plugs between the harness and one side of the PGM-III), or you could "splice" the HRC harness, but that would be criminal! You would also need another PGM-III plug to wire in, and it will all start to get very messy!

Not sure if I got this part completely straight, sorry if I haven't, English isn't my main language.
The HRC delimiter is only a box that tricks the PGM-III to believe that the gearbox is in third gear and therefore not advance the timing in 4,5 and 6th gear, right? So that's not something that I MUST have just to start the engine, correct?

And what your'e saying is that the HRC harness only plugs in to one of the connections on the PGM-III box, but to be able to splice the harness if I wan't to remove this restriction without getting the HRC delimiter, I would need another PGM-III plug to use for my splice? And that would make the install tacky...

thanks again!

And another quick question, the sales ad for the HRC harness that I've found says that the "power up box" isn't included. What is the power up box?

Best regards,
Jonatan

I think best advice is to get street harness, then remove extra plugs and have it delimited (wire splice)
what Andy is saying that HRC harness is rare and should not be cut up for this.

Dmitry wrote:I think best advice is to get street harness, then remove extra plugs and have it delimited (wire splice)
what Andy is saying that HRC harness is rare and should not be cut up for this.

Ok, but the only harness I can find is a HRC harness. If you could direct me to a street harness on sale, please do so. And since I'm not going to use any lights or instruments, I don't see why I shouldn't get a HRC harness. I just want to know which is the best for my application.
Thanks

If we weren't on the otherside of the world I'd swap you a street harness for the HRC harness

Post WTB in classifieds for a harness

nxrsr20 wrote:If we weren't on the otherside of the world I'd swap you a street harness for the HRC harness

If I could I would swap my climate for yours at the moment. I wouldn't say no to being in Aussie now, got damn snow here.

I've bought a regulator/rectifier and a HRC harness now, yay!

Now I just have to create some engine mounts, order a exhaust system and modify it to fit, modify my shifter linkage, throttle wires and clutch wires, clean the carburettors etc etc... Lol

So. The HRC harness has arrived and it fits into every plug on the engine. So it's connected. But I only have one connection for the PGMIII. The black one is instead two grey connectors. If I have understood this correct, this is where I should plug in the HRC delimiter. The HRC delimiter does nothing else then the wire splice for the GPS, correct? Is there any way to get these grey male connectors and the black male for the PGMIII from someplace so I could do the connection between these and the splice myself? Or does anyone have a delimiter for sale?
The part marked red is the part I don't have...
http://jonatanfoto.se/Superkart/HRC.jpg


Thanks in advance once again!