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#1 |
Registered User
Join Date: Jun 2016
Location: Novato, CA
Posts: 519
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Tapping when cold and trouble shifting to first
Hi All, Recently rebuilt my L6 230. Broke it in, and changed the oil. Running SAE30 this change with ZDDP additive.
When I first fire it up, its very tappy. I don't know if this is normal or a symptom of a misadjustment. I followed the compcams instructions to set pre load on the lifters, 3/4 turn past when the pushrod wont easily spin in my fingers. Video of cold start: https://imgur.com/l6cKica Video after it warms up: https://imgur.com/x6ZlTGi Any thoughts? My second problem is thus: It's the manual 3-speed transmission with 3OTT. Sometimes when I go to shift into 1st gear at a stop light or stop sign, it sort of jerks/thunks/grinds into gear even with the clutch pedal fully depressed. I believe this is a non-synchro transmission, but even from a dead stop this happens sometimes. What's going on? Any thoughts on how to fix it? I've tried to double clutch, I've tried to goose the engine a touch before attempting, no dice. I don't think it's happened when switching from Reverse to 1st gear, only when downshifting from 2nd to 1st at a complete stop.
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1965 GMC 1000 SWB Fleetside L6 230 - SOLD Thanks everyone for the help over the years. |
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