1977 YZ 400 D 1W4-005954

Wednesday, December 24, 2008


The piston to liner fit is not correct so a new piston is required the .96 is to small.
Piston pn 510-11631-05-97

Bolt correct rebuild.

Bolt correct rebuild.
What a huge job, a picture tells a thousand words how true. I have owned plenty of race and trail bikes, but never spent so much time on one bike as this, you have not lived until you have built a bike to bolt correct concourse.


Thursday, November 13, 2008

Monday, October 13, 2008

Saturday, September 20, 2008

Con Rod Part numbers

1. Con Rod____________ 431-11651-00-00
2. Pin big end__________ 2x4-11681-00-00 = YZ 250 F 1979
3. Bearing big end_______ 93310-42541-00
4. Washer_____________ 275-11685-00-00

Bikes & Bit Importers. 63 Wandeara Crescent Western Australia, Australia 6073
08-9295-6688 / 08-9295-1962

Friday, September 19, 2008

Saturday, August 30, 2008

Engine reference YZ 400D 1W4.

Engine reference YZ 400D 1W4.
These YZs are notorious for the bearing housing coming free from the crankcases.
This one is in excellent condition.

Tuesday, August 19, 2008

Saturday, August 16, 2008

Friday, August 15, 2008

Next step paint shop.

YZ 250D1W3 and a YZ 400D1W4
All preparation to the frame work now complete. Now its of the the paint shop for paint preparation. This will entail sand blasting file finishing and filling any stone chips.
This time we are about to do 2 bikes at once. With the similarities of these 2 being close it should prove much faster than one at a time,

Thursday, August 14, 2008

Side stand.

The YZ 400 1W4 and YZ 250 1W3 both us the same side stand.

Wednesday, August 13, 2008

Side stand positioning

Clutch cable clip weld on. Far right.

The position of the side stand bracket is the question. What shape should it be? Where should it be welded?

Saturday, July 05, 2008

Parts required

1. Silencer 1w4-14753-00-00

Saturday, April 21, 2007

Saturday, October 07, 2006