Brain Posted December 30, 2013 Report Share Posted December 30, 2013 After a couple of months looking at this forum I decided to finally register. I'm from Quebec, Canada where the Datsuns are….pretty rare! i'm the pround owner of a little 510 that I bought last summer from a guy who imported it from California. I also bought (last week) a 720 witch is coming home and I should get next week. Unfortunately, since it's winter here I will not have the chance to drive it until next summer…. I have some minor problems with the carbs on my 510 (running too rich and very hard on idle) and since we are about 2-3 owners in Quebec, I've decided to come here to get some help. I'm a noob with carbs….but I want to learn….. Oh…and sorry for my english….french is my spoken language on it's way to his new home: Quote Link to comment
Just Joel Posted December 30, 2013 Report Share Posted December 30, 2013 Very nice... Welcome! Quote Link to comment
Just Joel Posted December 30, 2013 Report Share Posted December 30, 2013 And great first post btw ;) Quote Link to comment
datzenmike Posted December 30, 2013 Report Share Posted December 30, 2013 Really, really, like the 720!!! Black and gray and the rims compliment it perfectly. Why can't more people be like this? Looks like an '81-'82 but the hood vents are missing on the sides... the smaller grills added in the middle are interesting... I usually don't like that sort of thing. The 510 looks very straight also. Yes I understand winter having spent much of my life in Upper Canada just above Lake Ontario. Had a brand new '76 B-210 that lasted about 6-7 years before the salt rotted it away. You mention carbs not carb so maybe a picture of them? Probbly Hitachi SUs and we have lots of owners with them on a variety of motors. Quote Link to comment
Bob3 Posted December 30, 2013 Report Share Posted December 30, 2013 WELCOME to RATSUN! Quote Link to comment
GRpufnstuf Posted December 30, 2013 Report Share Posted December 30, 2013 Good looking cars! I remember the ad for that 720, it's one of the only 720 customs I've ever genuinely liked. Quote Link to comment
Brain Posted December 30, 2013 Author Report Share Posted December 30, 2013 here a pic of the engine (car is stored at the moment i'll get closer ones next week) My problem is that at idle the car runs smooth but very rich in gas (fumes when i press gas). As soon as i put the car in drive…engine runs very high in rpm. I turned the 4 little screws on the carbs…but I just can't find the perfect adjustment... Quote Link to comment
datzenmike Posted December 30, 2013 Report Share Posted December 30, 2013 Look like L16SSS carbs and manifold. Sealik will probably chime in on this. Both carbs have to be synchronised so that they are drawing the same amount of air, or one will be doing more work than the other at idle. Then the idle speed can be set. It's almost an art. Automatica are great survivors. They are hard to abuse so they last longer. Quote Link to comment
Brain Posted December 30, 2013 Author Report Share Posted December 30, 2013 I've tried a couple of hours to synchronize…. Quote Link to comment
datzenmike Posted December 30, 2013 Report Share Posted December 30, 2013 Hold a short length of garden hose to your ear and the other near the open carb. Adjust to the hissing sound. Quote Link to comment
cdub42 Posted December 30, 2013 Report Share Posted December 30, 2013 Look like L16SSS carbs and manifold. Sealik will probably chime in on this. Both carbs have to be synchronised so that they are drawing the same amount of air, or one will be doing more work than the other at idle. Then the idle speed can be set. It's almost an art. Automatica are great survivors. They are hard to abuse so they last longer. twin carbs is an art. haven't mastered it yet myself... get a unisync and a colortune. should make short work of it Quote Link to comment
datzenmike Posted December 30, 2013 Report Share Posted December 30, 2013 I just know Doug will say get a wide band. It is the ultimate in tuning at all speeds and throttle position. But depends if you are going for perfection or not. Generally you can tune by ear and plug color and it's close to an art form.. Quote Link to comment
HRH Posted December 30, 2013 Report Share Posted December 30, 2013 Nice 510, but yeah, that 720 is sick! Love the wheels, the whole thing is just awesome. Quote Link to comment
mrbigtanker Posted December 30, 2013 Report Share Posted December 30, 2013 Welcome aboard,nice start EHH Quote Link to comment
Ratwagon1600 Posted December 30, 2013 Report Share Posted December 30, 2013 Welcome from downunder! Quote Link to comment
Farmer Posted December 30, 2013 Report Share Posted December 30, 2013 Me likey the 720. 510 is not to bad either Welcome to Ratsun Quote Link to comment
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