cygnusx1 Posted November 7, 2006 Share Posted November 7, 2006 http://www.grmotorsports.com/board/viewtopic.php?p=225080#225080 Quote Link to comment Share on other sites More sharing options...
zero Posted November 7, 2006 Share Posted November 7, 2006 Wow, I really like that alot. I wonder how much tuning one would have to do to get all of those carbs running correctly...and how much a setup like that would cost. I bet it sounds wonderful. If he is starting a shop in maryland, I will be paying him a visit. I could go for a 12 sec carbed car. Quote Link to comment Share on other sites More sharing options...
S30TRBO Posted November 7, 2006 Share Posted November 7, 2006 http://forums.hybridz.org/showthread.php?t=116256 Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted November 7, 2006 Share Posted November 7, 2006 Wow! That setup looks awesome! Mario Quote Link to comment Share on other sites More sharing options...
S30TRBO Posted November 7, 2006 Share Posted November 7, 2006 Wow, I really like that alot. I wonder how much tuning one would have to do to get all of those carbs running correctly...and how much a setup like that would cost. I bet it sounds wonderful. If he is starting a shop in maryland, I will be paying him a visit. I could go for a 12 sec carbed car. His setup sounds awesome 7500rpm shifts, tuning wasn't an issue but you won't find another setup like that anywhere else in the states. I am sure he will offer it on his site but will be some $$$$. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted November 7, 2006 Share Posted November 7, 2006 Is there supposed to be an advantage over traditional Mikunis? Quote Link to comment Share on other sites More sharing options...
zero Posted November 7, 2006 Share Posted November 7, 2006 Theoretically, I'd imagine not too much. But those are some pretty mean numbers for a carbed car, not to mention he's on street tires. Quote Link to comment Share on other sites More sharing options...
Sumo Posted November 7, 2006 Share Posted November 7, 2006 How hard would it be to tune and calibrate such a set up? looks great though Quote Link to comment Share on other sites More sharing options...
JMortensen Posted November 7, 2006 Share Posted November 7, 2006 Shouldn't be any harder to tune, what would be a bitch would be synchronizing them all, but even that shouldn't be too hard. As long as the linkage was solid it would be 1.5x as hard as a motorcycle. Quote Link to comment Share on other sites More sharing options...
Mr.INSANE Posted November 8, 2006 Share Posted November 8, 2006 I cremed my pants when i watched that video Twice Quote Link to comment Share on other sites More sharing options...
savageskaterkid Posted November 8, 2006 Share Posted November 8, 2006 I was gonna try doing this setup after my friend had told me getting single barrel carbs are pretty cheap. All I could find though was like 30-35's so that didn't seem like it would be worth it. Now if I could find some 40's, then I'd do it. Quote Link to comment Share on other sites More sharing options...
greenmonster80 Posted November 8, 2006 Share Posted November 8, 2006 Here is a similar setup. Pics show that it can be done with a traditional tripple intake manifold. http://page5.auctions.yahoo.co.jp/jp/auction/e61149306 Pretty cool indeed Quote Link to comment Share on other sites More sharing options...
Bartman Posted November 8, 2006 Share Posted November 8, 2006 My motorcycle is a 94 V4 with over 138K miles and four Mikumi carbs on it. The carbs have never been worked on at all (not even sync'ed) and it still runs great and starts right away every time. Quote Link to comment Share on other sites More sharing options...
Sven Posted November 8, 2006 Share Posted November 8, 2006 Is there supposed to be an advantage over traditional Mikunis? Usually the point is to use slide valve carbs for throttle reponse. I can't imagine there being any difference, other than cool factor, if you used normal butterfly type carbs. I've been curious about this one for a while. It sure looks cool. Is there a performance advantage? It's the the thing to do in Japan, but so is putting 195 tires on 9" rims... Quote Link to comment Share on other sites More sharing options...
JMortensen Posted November 8, 2006 Share Posted November 8, 2006 He did it because of efficiency, plus they sound really cool. Did he mention what about the motorcycle carbs makes them more efficient? I have to imagine the sound is going to be pretty similar. 6 open holes through which you can see the intake valve either way. Not trying to bust anyone's chops, just would like to know if there is REALLY a difference, or if it just looks cool. I do think it looks cool, for what it's worth. Quote Link to comment Share on other sites More sharing options...
73ZCAR Posted November 8, 2006 Share Posted November 8, 2006 JM, As explained to me by a friend who builds dwarf cars. If they are flat slide carbs, they open like a guillotine*sp*. Shafts and butterflies are not there, and threrefore do not obstruct/ disturb the airflow through the intake at full throttle. Mike. Quote Link to comment Share on other sites More sharing options...
S30TRBO Posted November 8, 2006 Share Posted November 8, 2006 Did he mention what about the motorcycle carbs makes them more efficient? I have to imagine the sound is going to be pretty similar. 6 open holes through which you can see the intake valve either way. Not trying to bust anyone's chops, just would like to know if there is REALLY a difference, or if it just looks cool. I do think it looks cool, for what it's worth. Jon, The one thing that I liked when changing the needles was the slotted adjustments with the use of a "c" clip. He said the needles come 96, 97 and 98 sizes. Then you have 5 or 6 adjustments on the top for the needles to seat using the "c" clip in the carb body. Also when he changed the mains after the first run the carbs are held to the manifold by 6 worm drive style clamps. After removing the fuel rail ends, the fuel rail and all 6 carbs come off as one unit. That’s Eiji on the right and me on the left: Quote Link to comment Share on other sites More sharing options...
Sven Posted November 8, 2006 Share Posted November 8, 2006 The other point I forgot to mention about slide valves is progressive throttle response. Butterfly valves are pretty much logarithmic in their opening (cracked open, little more open, little more, then BAAM WFO...). A slide/gate valve maintains flow velocity better through it's range of operation, compared to a butterfly. I imagine part throttle metering is improved. This is probably what Elji is getting at with the "efficiency" statement. They also do not have the flow disturbances of throttle plate and shaft. My old roommate (RIP), used to wax poetic about slide valve racing carbs he used on bikes. The throttle response is right there- right now. I never rode any of these bikes, but they certainly seemed to rev quicker when cracking the throttle. Quote Link to comment Share on other sites More sharing options...
Sven Posted November 14, 2006 Share Posted November 14, 2006 Here's a link to 4 FCR41 flat slide carbs set up for an A-series Nissan on Yahoo japan. - サニ - A type FCR41 used item - I'm really not liking that ridiculous neck down and sharp turn to the intake flange. Adding a little length to the intake runners would have worked out much better IMHO. Quote Link to comment Share on other sites More sharing options...
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