What piston to use? xt 600 1VJ

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ruudeiman
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Posts: 7
Joined: Mon Jun 05, 2023 2:32 pm
What Bike or Bikes Do You Own?: Yamaha xt600 1vj, Honda cb 500 four, Jawa 350/638,
Previously Owned Bikes: gilera rc 125, kx 125
Location: Estonia

What piston to use? xt 600 1VJ

Post by ruudeiman »

Hello!

I am rebuilding my 1vj tenere motor and wondering what piston to use in the build. I will use a 3AJ head and cylinder. The available options are Wössner, TKRJ, Prox and Namura. I would love to keep in in stock compression (reliability over power).

Also I will be putting a new conrod in aswell. Is it possible to put a 3TB conrod (without washers) to a 1VJ crank (with washers)?

Thanks in advance!
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scottieh
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Posts: 796
Joined: Wed Mar 30, 2011 3:58 am
What Bike or Bikes Do You Own?: 1988 XT600Z 3AJ
1987 XT600Z 1VJ
1985 XT 600
1980 TT500
1980 XT250
2001 KTM 300XC
Previously Owned Bikes: 1982 XT550
1981 TT250
1989 Yamaha Virago 750
1994 DR650
1980 Suzuki GR650
1997 KLR 250
1986 Honda Spree
Location: Salt Lake City

Re: What piston to use? xt 600 1VJ

Post by scottieh »

Why not buy a used stock Yamaha piston? Plenty of options on ebay. Interchangeable with pretty much every 600 from 1983 to 88.

https://www.ebay.com/itm/401963312834?m ... media=COPY
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Peen
On the ladder
On the ladder
Posts: 94
Joined: Mon Apr 22, 2019 7:15 pm
What Bike or Bikes Do You Own?: 1988 XT600 Tenere 3AJ, Tenere 700
Location: UK

Re: What piston to use? xt 600 1VJ

Post by Peen »

Ive just rebuilt my 1988 3aj engine, including a rebore, and was supplied with a TKRJ piston. Seems very close to the original, standard compression. I think theyre made in Japan.

The bike has only done 100 miles since rebuild, so cant comment on longevity, but the engine hasnt blown up yet.
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