Lockleaf Posted December 16, 2015 Report Share Posted December 16, 2015 There is a set of su carbs and manifold for sale near me. Only info the guy has is "they are for a 510". Do these look like a set for an L series? What's a reasonable amount to pay for a set like this? More pics coming, on my phone and its slow to post lots of pics Quote Link to comment
datzenmike Posted December 16, 2015 Report Share Posted December 16, 2015 No They are 4 bolt so in this case from a U20 engine. That manifold won't fit but the carbs could possibly be used. Quote Link to comment
Lockleaf Posted December 16, 2015 Author Report Share Posted December 16, 2015 Well then I won't bother with the rest of the pics. Thanks Mike! So that's a set for a roadster then... Quote Link to comment
datzenmike Posted December 16, 2015 Report Share Posted December 16, 2015 The manifold sure looks like it. The early Z car also used 4 mounting bolts too, but likely these were together at one time. Quote Link to comment
Doctor510 Posted December 16, 2015 Report Share Posted December 16, 2015 The manifold sure looks like it. The early Z car also used 4 mounting bolts too, but likely these were together at one time. I hate to differ with you Mike, I believe the manifold is a SSS for the L-4 motor. If you look closely, there are two carb mounting studs with the 4 stud isolators and Roadster carbs. This should fit a 510 nicely. If they could be bought for $125 it'd be a deal. Quote Link to comment
TENDRIL Posted December 16, 2015 Report Share Posted December 16, 2015 post some more oics Quote Link to comment
Lockleaf Posted December 16, 2015 Author Report Share Posted December 16, 2015 Well then I will post a few more pics since it might be 510 stuff 1 Quote Link to comment
TENDRIL Posted December 16, 2015 Report Share Posted December 16, 2015 YAY!! Lmotor doc seems right 1 Quote Link to comment
Lockleaf Posted December 16, 2015 Author Report Share Posted December 16, 2015 But still likely roadster carbs, or original carbs to the manifold? Quote Link to comment
TENDRIL Posted December 16, 2015 Report Share Posted December 16, 2015 U20 head side Quote Link to comment
TENDRIL Posted December 16, 2015 Report Share Posted December 16, 2015 carbs un sure, what size motor is in your car? Quote Link to comment
Lockleaf Posted December 16, 2015 Author Report Share Posted December 16, 2015 I have an L18 sitting in the garage. I also have a z22 that is going in right now. These carbs might be cool to keep and build an lz later or something.... 1 Quote Link to comment
TENDRIL Posted December 16, 2015 Report Share Posted December 16, 2015 yes, i was going to say they might be tuned to an larger motor already Quote Link to comment
wayno Posted December 16, 2015 Report Share Posted December 16, 2015 I am not impressed with the linkage connecting the two carbs, it is just a piece of metal connected to the spring return arms. They do kinda look like roadster carbs, but they are set up on the wrong sides, the left one is on the right, and the right is on the left, as the bowls are supposed to be next to each other in the middle, but in the photos the bowls are on the outsides. Quote Link to comment
datzenmike Posted December 16, 2015 Report Share Posted December 16, 2015 Yup, all I saw was the four bolt holes. Looks like L series intake ports. The U20 are oval. SSS SUs were 38mm Don't Roadster SU's throttle plates turn the opposite direction to the L series SUs? Quote Link to comment
Lockleaf Posted December 16, 2015 Author Report Share Posted December 16, 2015 Maybe they are real British SU's? This is a pic from Dave Patten's stash on datsun510.com. The caption says these are british SU's on an SSS manifold. Fuel bowls are on the outside, like those I am looking at. Quote Link to comment
Lockleaf Posted December 16, 2015 Author Report Share Posted December 16, 2015 Although now that I look at that pic more closely maybe not. Those use throttle linkage to actuate, not a cable. Though the ones I'm looking at could just be modified, they do have that chintzy metal strap connecting the cable linkages... Did any Datsun SU style carbs ever come cable actuated? Quote Link to comment
wayno Posted December 16, 2015 Report Share Posted December 16, 2015 Banjo fittings are wrong, they look like roadster carbs to me, like the ones I have on my U20 roadster. They probably put on that way because they would hit each other put on the way they are on the roadsters, as the roadster manifold has them 8 1/4 inches apart, while the L20b manifold has the about 7 1/4 inches apart, so they put them with the bowls on the outsides and made there own funky linkage. I have a roadster to look at and measure. Quote Link to comment
wayno Posted December 16, 2015 Report Share Posted December 16, 2015 Although now that I look at that pic more closely maybe not. Those use throttle linkage to actuate, not a cable. Though the ones I'm looking at could just be modified, they do have that chintzy metal strap connecting the cable linkages... Did any Datsun SU style carbs ever come cable actuated? All mine are cable or a cable/linkage combo like the roadster, but I don't have any 510s either. That set has a cable connection on it, see it right next to the funky piece of metal tying the two carbs together on the left carb in the photo. I don't know for sure they are roadster carbs, there are differences, maybe they are Z car carbs, I don't really know there design at all, I but I believe they are held on the manifold with 4 bolts. Quote Link to comment
Stoffregen Motorsports Posted December 16, 2015 Report Share Posted December 16, 2015 Maybe they are real British SU's? Those aren't British. They're Japanese. I'm betting 240Z. If you want to find out, search youtube for z therapy's rebuild video. The first 5 minutes of the video all he talks about is how to identify them and what the differences are. Quote Link to comment
Lockleaf Posted December 16, 2015 Author Report Share Posted December 16, 2015 Thanks for all the tips guys. I'll have to do a little more research tomorrow. Quote Link to comment
Sealik Posted December 16, 2015 Report Share Posted December 16, 2015 Looks like early 240Z carbs, 220 or K14 manifold with Z air horns.....just like mine. Quote Link to comment
datzenmike Posted December 16, 2015 Report Share Posted December 16, 2015 Measure the throat diameter. Real Hitachi Roadster SUs are 38mm or 40mm. Z car are 46?mm Quote Link to comment
Sealik Posted December 16, 2015 Report Share Posted December 16, 2015 The intake looks like it's been opened up to 46mm, to match the Z/4 bolt isolators, definitely not 38s Quote Link to comment
Lockleaf Posted December 16, 2015 Author Report Share Posted December 16, 2015 Academic at this point. Universal joint in my wife's Subaru exploded today, so toy money becomes rebuild driveshaft money. Here's the ad if anyone wants them. I will be happy to arrange to pick them up and ship them if necessary. http://www.ksl.com/?nid=678&ad=37745417&cat=&lpid= Quote Link to comment
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