Normal compression for Mid 80's Suzuki DT 40

raczekp1

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Joined
Mar 30, 2010
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1,327
i did rebuilt. new oversize piston . i got 150 psi
normal runing compresion would be from 100-150 psi
 

thatone123

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Mar 7, 2009
Messages
707
How did your rebuilding go...I was going to rebuild this one as they person I got it from cheap said it had low compression. Tested it and it seems ok. Cleaned carb as I thought maybe that was the problem. Did you have to have it bored? Wondering if I do rebuilt if I could get away with new rings.
 

raczekp1

Lieutenant
Joined
Mar 30, 2010
Messages
1,327
new oversize piston kit, size +50
new con rod kits,
new bearings
new gasket for the head and water panel on the head
All parts from Taiwan
total cost around 300$
 

thatone123

Banned
Joined
Mar 7, 2009
Messages
707
NOT BAD !!!! I buy some parts from there also...big wait but worth it. Amazing how cheap 4 stroke carbs like for snowblowers are.
 
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