| [ Total Views: 717 | Total Replies: 9 | Thread Id: 102375 ] |
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 baja_01
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 posted on June 11th, 2013 at 04:28 PM |
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Conrod specs?
Hi All
Can anyone tell me what the T1 conrod bigend ID should be?Trying to sort out an issue..........
Thanks
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psimitar
Son of Jim - Creator of Good
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| posted on June 12th, 2013 at 01:02 AM |
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What issue? I know the main n big crank journals are just under 55mm diamter on T1 cranks.
Bearing shells are maybe 2mm thick so gives you around 59mm Rod ID but without knowing the shells actual thickness thats as much help as I can be.
madness is in the eye of the beholder  |
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dangerous
A.k.a.: Dave Butler Muffin Man
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| posted on June 12th, 2013 at 05:33 AM |
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Minimum size should be 2.2756" to maximum 2.276"
which is 57.8mm to maximum 57.82mm.
If they are tight, on the crank, but the bore is within tolerance,
also check, that the side faces are square with the bore.
| Quote: | Originally
posted by westi
That's mad Alan.
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baja_01
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| posted on June 12th, 2013 at 08:25 AM |
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I've got one rod that binds. Tried swapping conrods on crank, same rod still binds?
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psimitar
Son of Jim - Creator of Good
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| posted on June 12th, 2013 at 10:49 PM |
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Do you have a micrometer to check the crank journal?
If 2 rods bind then is the most likely culprit. The bearing also has to sit flush with the rods cap mating faces as otherwise it can pinch here and
cause tightness binding. Don't assume that doing the cap up will force the bearing into the rod journals seat.
madness is in the eye of the beholder |
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ragged
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| posted on June 13th, 2013 at 12:11 AM |
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Are they 40hp or 1600 con rods?
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baja_01
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| posted on June 13th, 2013 at 08:41 AM |
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1600 and only one rod. Crank and the rods getting measured at the moment............
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baja_01
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| posted on June 15th, 2013 at 09:56 AM |
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Hi All
Just an update. Got the crank and rods back. We found the crank journals spot on, one rod was out of spec and the other three were on the tighter side
of specs.Bit of a hone and all good now. Goes to show brand new parts aren't always right..........
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psimitar
Son of Jim - Creator of Good
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| posted on June 15th, 2013 at 10:06 PM |
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Yea, any new part should be inspected before fitting to anything and measured if necessary. Maybe if CB they wouldn't need checking but most others I
would 
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baja_01
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| posted on June 16th, 2013 at 08:17 AM |
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Ummm they are CB..........
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