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Makotosun

1975 DT400 twin shock - exhaust nuts torque

  • Jammyyammy
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1975 DT400 twin shock - exhaust nuts torque was created by Jammyyammy

Hi, anybody know what torque the nuts should be where the exhaust bolts onto the cylinder block?
Many thanks…
27 Aug 2021 13:53 #1

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Replied by Jammyyammy on topic 1975 DT400 twin shock - exhaust nuts torque

…. in N.m or lbs.ft

Thanks
27 Aug 2021 14:21 #2

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Replied by adguy2112 on topic 1975 DT400 twin shock - exhaust nuts torque

See page 142 in the service manual section for that year bike. Torque specifications are by fastener size. I think a 13MM fastener was 15 ft lbs but probably best for you to verify.
27 Aug 2021 14:37 #3

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Replied by MarkT on topic 1975 DT400 twin shock - exhaust nuts torque

Caution!!!! 

They are only 6mm!  Stepped studs. Very commonly broken. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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27 Aug 2021 18:00 #4

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Replied by Pedalcrazy on topic 1975 DT400 twin shock - exhaust nuts torque

Use a new gasket and snug them up until they feel tight...taking into consideration their size. I like that you want to use correct torque. I'm the same way. However, on non-critical parts like that I wing it a little as manuals likely don't call out that connection. Just tighten it until it breaks then back it off a little LOL.
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1978 DT400E
1976 DT400C
1973 RT3
1971 RT1B
1968 DT1 (3)
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28 Aug 2021 08:27 #5

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