J1 Rebuild

Here's a chance to show off your zxr400, so get them digital cameras out and show us some piccies.Rebuilding your bike or modding it then let everyone in on it.

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Green1
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J1 Rebuild

Post by Green1 » Mon Jul 22, 2019 10:48 pm

I thought I better start a new thread now I'v introduced myself.
Don't expect a quik turnaround with this one as I'm swamped with work at the moment and also need to sell a few bikes to make room to start this one properly.
Lets start with a few before pics. Not very good but you get the idea. Looks OK from a distance
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Green1
Posts: 9
Joined: Wed Jul 17, 2019 11:04 pm
Location: Essex

Re: J1 Rebuild

Post by Green1 » Mon Jul 22, 2019 11:02 pm

Air intake hoses are perished
SAM_0580.JPG
Hammerite on everything.
Nice sick2u But on the plus side the plastics look OK
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Last edited by Green1 on Mon Jul 22, 2019 11:23 pm, edited 1 time in total.

Green1
Posts: 9
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Location: Essex

Re: J1 Rebuild

Post by Green1 » Mon Jul 22, 2019 11:13 pm

On to the engine. It looks to have a G stamped on it.
Engine No: ZX400GE008136
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Green1
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Location: Essex

Re: J1 Rebuild

Post by Green1 » Mon Jul 22, 2019 11:20 pm

The front forks are in a bit of a sorry state
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BigB
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Re: J1 Rebuild

Post by BigB » Tue Jul 23, 2019 1:41 pm

be good to see this sorted!

Green1
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Re: J1 Rebuild

Post by Green1 » Mon Jul 29, 2019 7:55 pm

Not had a chance to look at the bike yet. But I did glance at its front forks and can't see any adjusters. Bummer
I also noticed a switch hardwired to the fan. It worked briefly then just stopped. The small amount of history I do have shows its had the head gasket done. But weather it was on this engine or another who knows.

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banner001
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Re: J1 Rebuild

Post by banner001 » Tue Jul 30, 2019 7:23 am

The front forks only have the bottom compression dampers from the J2 onwards.

Can you get a better picture of this G or J punch mark on the RHS side of the engine, as I can't see it in your pictures...
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003

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BigB
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Re: J1 Rebuild

Post by BigB » Tue Jul 30, 2019 3:59 pm

Banner I was always under the impression the H/J1 had the compression on the base of the forks as well?

see.... I still learn something new everyday :pmsl

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banner001
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Re: J1 Rebuild

Post by banner001 » Tue Jul 30, 2019 5:33 pm

J2 was where they got a bit more serious with the SP :excited

The J2 has flatslide carbs too. J1 is stock carbs, slotted cams, close ratio gearbox.
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003

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BigB
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Re: J1 Rebuild

Post by BigB » Wed Jul 31, 2019 12:27 pm

makes sense! i have the slotted cams in mine, non adjustable, i have no idea if i have the close ratio gearbox, i have owned the bike 10years, i have never tested it against another ZXR to even know!

that said, i had a look at my cyl head, i have nothing stamped on it so i dont even know if it is a J or standard H! mine IS the H1 chassis, the engine is from that frame as well... the chassis number is really early compared to what I have seen - ZX400H001081

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