FiveSeventyZee Posted August 26, 2016 Author Report Share Posted August 26, 2016 New wheel hardware showed up today I also managed to destroy a tire somehow...i guess I shouldn't be out rallying dirt roads on 10 year old tires ha 2 Quote Link to comment
FiveSeventyZee Posted September 4, 2016 Author Report Share Posted September 4, 2016 So after a 350 mile trip to california Eve's not doing so hot. Cyl 1 took a crap on my return trip hopes. 60 psi with 150ish in the other 3. Checked the valves and found the following Intakes: 1 - <0.0015 2 - 0.005 3 - 0.003 4 - 0.008 Exhausts: 1 - 0.010 2 - 0.010 3 - 0.010 4 - 0.010 I set the valves at .008 and .010 last fall, less than 1000 miles ago. Clearly something is causing the intakes to not hold their adjustments. Upon adjusting the valves I found I was out of adjustment on intake 1. Pulled the rocker off and found the contact surface was grooved from being in constant contact with the cam. It seems to me the brass valve seats are either sinking or being worn down moving the intake valves up the head thus dropping my valve clearances. I don't exactly have the time to rebuild the head right now so if it's avoidable I will make my best efforts. So here goes...hand polished the rocker pad and filed the jam nut thinner. Hopefully this will be at least good enough to get some compression back to cyl 1 and get me back home.... 2 Quote Link to comment
racerx Posted September 4, 2016 Report Share Posted September 4, 2016 I feel you that happened to my 510 6 mos. Ago. 1 Quote Link to comment
Charlie69 Posted September 4, 2016 Report Share Posted September 4, 2016 Time to do a valve job with seats. Totally do able. Hopefully when you pull the head you do not find anything else. 1 Quote Link to comment
FiveSeventyZee Posted September 4, 2016 Author Report Share Posted September 4, 2016 Yeah, I just don't have garage space right now. I will be pulling the head when I get the mini put back together. So for now I'm getting sketchy 2 Quote Link to comment
FiveSeventyZee Posted September 4, 2016 Author Report Share Posted September 4, 2016 all back together right now got enough adjustment out of the refinished rocker and thin jam nut. All clearances are 10 and 8 thou, and compression in cylinder 1 is back to normal. Too late to start her up but tomorrow morning will be moment of truth! She's also got some small tune up stuff since I was in there. New oil pan gasket, fan belt, spark plugs and plug wires. 3 Quote Link to comment
Charlie69 Posted September 4, 2016 Report Share Posted September 4, 2016 Fingers crossed. 1 Quote Link to comment
FiveSeventyZee Posted September 4, 2016 Author Report Share Posted September 4, 2016 She runs! I hope to be heading home tomorrow. I will have feeler gauges at the ready for quick checks haha. PSA: this is not a permanent solution, if your datsun has this happen get new valve seats. This is one of the more janky fixes I've done and it's just to get me home. 2 Quote Link to comment
Charlie69 Posted September 4, 2016 Report Share Posted September 4, 2016 I did not realize you were not at home, great temporary fix! Quote Link to comment
FiveSeventyZee Posted September 4, 2016 Author Report Share Posted September 4, 2016 Haha well, I'm at a home away from home so I've been working in a garage but I'm away from most of my tools and more importantly in this case my spare parts. I have on other complete head. It's a W58 but it would work. I plan on swapping heads and rebuilding this one with steel valve seats when I get back. 2 Quote Link to comment
FiveSeventyZee Posted September 4, 2016 Author Report Share Posted September 4, 2016 And on the test drive she did well for a while then the distributor killed itself... 1 Quote Link to comment
flatcat19 Posted September 5, 2016 Report Share Posted September 5, 2016 Datsuns don't break down. Datsuns get unscheduled upgrades. 4 Quote Link to comment
DatMo Posted September 5, 2016 Report Share Posted September 5, 2016 Datsuns don't break down. Datsuns get unscheduled upgrades.this is so trute 1 Quote Link to comment
tr8er Posted September 5, 2016 Report Share Posted September 5, 2016 Datsuns don't break down. Datsuns get unscheduled upgrades. That's some sage shit right there. 2 Quote Link to comment
FiveSeventyZee Posted September 5, 2016 Author Report Share Posted September 5, 2016 Yeah, I'm all for electronic ignition buuuut I sort of need to get back to oregon and don't really have a matchbox lying around... 1 Quote Link to comment
skyblue Posted September 5, 2016 Report Share Posted September 5, 2016 Nice job. I can dial in the adjustment when U do them hot. But u set them at 10 and 12. Quote Link to comment
FiveSeventyZee Posted September 5, 2016 Author Report Share Posted September 5, 2016 Got the points issue solved in just as sketchy a manner as the valve clearance solution. Used the secondary points as a spare set and set dwell so I'm running a dual points distributor on one set of points haha 1 Quote Link to comment
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