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satolsa

Solex Solex Solex

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Hi

It is the first time posting a thread in this web cuz I am a new member.

I have a '72 240z bought in CA and brought to Houston, TX back in '98.

It comes with Triple Solex 40 PHH set up, head and all cool looking stuffs. I let it sit too long in my garage (really long). The carbs stopped working. I took them off, disassemble, and clean them. Here's the problem. I am a mechanical illiterate. I don't know anything about carbs. They look clean and beautiful now. BUT they just don't work. I need to rebuild them, I guess.

I know that people here always talk about Mikuni, Weber, SU and New one, but not Solex. I understand the Mikuni bought the technology from Solex, and improved them. Right?

I don't know what to do with my Solex. Does anyone know anyone (good one) who can rebuild Solex????

My z has rebuild 240z stock engine and SUs now by Legendary Z specialist Kin Chan. He doesn't like Solex or Mikuni.

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If you went out and bought a Rolex watch . Took it home and found that it was not working properly , and you dident have a clue what to do to the works to make it right. WOULD YOU TAKE IT ALL APART AND CLEAN ALL THE GEARS AND SPRINGS ???????? Sorry but WHAT WERE YOU THINKING ?? By the way welcome to the club. There are several members that live in your area . Why don't you post a question in the HELP ME forum and ask for a responce for some one in your area that may know a good mechanic. Or someone local that knows SOLEX carbs. Trying to reassemble these over the net using email will be a tall order . There may be a member that can shed some light on these units, I really hope so . If you are new to the Z world , I strongly recommend that you watch ebay and find a Nissan survice manual for your year of Z . They run around $50.00 but will be will worth the money . Gary :surprised

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I know. I was dummy arse.

It all started when I let a punk husband of a person I knew, ex-air force self-claim know everything, touched them. Actually he is the one started disassembling them. He stationed in Japan, and has 240sx. If you are reading this thread, Yes I am talking about you!

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If you are new to the Z world , I strongly recommend that you watch ebay and find a Nissan survice manual for your year of Z . They run around $50.00 but will be will worth the money . Gary :surprised

satolsa, keep in mind 240Z's DIDN'T come with Solex carbs. They came with SU style carbs. So the manual Beandip is referring to won't help at all with your carbs. If I were in your predicament, I'd eBay off the Solex's and buy roundtop SU's and start from there. I've been a member of this club for nearly three years and I don't ever recall reading of Solex carbs here. :eek:

On the other hand, there are quite a few " SU experts" here, including many who race competetively, that would be more than happy to help you out with SU issues, especially after you have searched the old threads FIRST.

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Ex-owner installed the triple Solexs. My z has SUs installed by KIN now. I know they are not stock. I am mechanically dummy, but not that much. Did you read my first posting?

By the way, Ohhh No~. I don't want to give them up. They look so cool in the engine room. I might keep them as decoration. Cuz they look so cool. Oh no NO NO. I want resurrect them as a part of great carb revolution history for future generations!

Yet, does anyone interested?

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You are correct that Mikuni bought Solex. There are several different carburetor styles, and they all have slightly different float assemblies. The main stuff that gets changed out, the jets, are all the same AFAIK.

If you can find a Mikuni manual that would help. A copy of the "How to Modify your Nissan/Datsun OHC Engine" book would also help, as there is a pretty good explanation of the carbs there.

I don't know how much you took apart, but as for the "normal" stuff one would get into like the float chamber covers and the jet covers that stuff is pretty basic. If you get the manual or the book you should be able to get them back together properly.

Getting them tuned is a whole other ball of wax, but it also isn't rocket science. Unless you're really mechanically inept I'd suggest you give it a go yourself AFTER reading some of the info in the above manuals.

You need a little bit of knowledge, because if you don't have any idea what jets do what you'll chase your tail. But if you have a basic understanding of what jets are working and when it's not that difficult to tune them. I would HIGHLY recommend putting an O2 sensor in the exhaust so that you can monitor the air fuel ratios as you're driving. Then you can figure out which circuit should be working when you go lean or rich, and make the jetting for that circuit richer or leaner to compensate.

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"I would HIGHLY recommend putting an O2 sensor in the exhaust so that you can monitor the air fuel ratios as you're driving. Then you can figure out which circuit should be working when you go lean or rich, and make the jetting for that circuit richer or leaner to compensate."

It is a great idea! Only if I knew how to install O2 sensor!!! I will talk to my mechanic. He is against Solex idea.

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Take the car to a muffler shop. Have them weld in a O2 bung. Then get a simple one wire O2 sensor and either buy a gauge that shows the air fuel ratio (Autometer makes one) or if you're cheap like me hook the sensor up to a volt/ohm meter and shoot for .8V. It's pretty simple to get the O2 in there, and you can get it fairly close that way.

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Zpoint (Guus) a member here, might be able to sell you a Mikuni manual, at a nice price, that's where I got mine. The triples are really only suited to a motor that has been built with 6 chokes in mind, you know..cam, headwork, extractors,.. part of a package. A nice trait of the mikunis is they seem to be almost a set and forget item, or in other words, once you got 'em right...don't mess with 'em!

Get the manual and make a project of detailing them, and putting them together just right. They do make an expensive decoration...but you 're spot on about the look! That would be some conversation piece for the garage :classic:

Jim.

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What I learned so far from everyone is that I messed up pretty bad. For everyday driving with sock engine SU is suited better than SolexSolexSolex. It hurts. If you want to hurts me more please post your opinion. I would take it, and learn as hard lesson.

But does anyone know anyone who can rebuild Solex??? There gatta be someone. Please the someone claim yourself.

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If you went out and bought a Rolex watch . Took it home and found that it was not working properly , and you didn't have a clue what to do to the works to make it right. WOULD YOU TAKE IT ALL APART AND CLEAN ALL THE GEARS AND SPRINGS ????????

Yeah I probably would... :D

And by doing so I would learn how it works and how to fix it, usually..

Actually I'wouldnt buy a rolex, I'd get a Japanese copy of a rolex, Just like my Japanese copies of Gibson Guitars (by Ibanez) and My Japanese copy of a porsche/e-type/ferrari (by Datsun) ROFL , which I have taken all apart with no formal mechanical training. But I'm good at that sort of thing, and have done it to other cars before.

With the proper manual, you should be able to put them back together. You might need to get somone else to tune them though. Some times you just have to know when to leave it to the experts. Like I do with gearboxes.

Good luck with it.

Solex Carbs were a pretty common swap in Japan. They were fitted to 240Z rally cars, and the Z432R, Skyline GTR probably had them too, and lots of roadsters have them bolted on their U20's. Dont know for sure, but I'm guessing they were available through nissan motorsport.

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Please take look at my Avatar. This is the latest picture of my SolexSolexSolex. As you can see here they are put back together, and dirty again. As a matter of fact, I have Mikuni Manuals in English and Japanese. I bought them and read them so that I could at least put them back together. But I still have no clue how to tune all jets. I cannot even find new jets. I did all I could do for my part before I posted here!

Maybe I was not clear. I want someone to tell me who can rebuid my SolexSolexSolex. Please Have a mercy on my SolexSolexSolex.

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We do have a vendor who specializes in rebuilding and restoring Mikuni/Solex Carbs

Wolfcreekracing.com

However, you do not have Mikuni/Solex pph 40mm, You have European Solexes, so Todd at wolfcreek may not be much help. Your carbs are from a Mercedes, fitted to a nissan L-6 manifold. Talk to Todd anyway, cause he may know just who to put you in contact with.

Here's the link to your photo

http://www.classiczcars.com/photopost/showphoto.php?photo=16292&size=big&cat=500&page=1

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"you do NOT have Mikuni/Solex pph 40mm, You have European Solexes. Your carbs are from a Mercedes, fitted to a nissan L-6 manifold."

Finally someone could identify the secret root of my SolexSolexSolex....

What?!!... Mine is NOT?!!! Not Mikuni/Solex? (I already knew.) or Not phh? (That I didn't know!) They are not phh sidedraft?!! They are not performance carbs?!! They are for Mercedez?!!! This one hurts me big time....

I don't know where in the world ex-owner got these from. I still remember his name. Some of you might know about him. I wish I could mention his name here. He used to live N. Hollywood CA. MyZ used to be Orange w/Black BRE style stripes. Does someone recognize this??? If any of you have an good idea whom I am talking about. Please send me private email. I cannot locate the guy.

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Whoa! They May be PHH's, although I do not know If solex used the same nomenclature. They ARE performance carbs. I don't know too much about Solex's (euro solexes that is) except that it hurts if you stubb your toe on them.

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In Addition, I too suggest the SU route. Side drafts are far from "Plug and Play". As others have stated Solex's/Mikuni's/Webers/Delotoros really do need dialing in with o2 sensors and, ideally dyno time. Make no mistake, the SU's are also High performance carburetors

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I found a memeber. He has 240z with triple Mikuni. He might be able to guide me! He is ZIII! He has triple Mikuni for 23 years. He never has problem! He tried Hitachi, SU befor Mikuni. I found a memeber. He has 240z with triple Mikuni. He might be able to guide me! He is ZIII! He has triple Mikuni for 23 years. He never has problem! He tried Hitachi, SU befor Mikuni.

Look. By the way how do you all past images here?

http://www.classiczcars.com/photopost/showphoto.php?photo=13208&cat=500&page=1

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Today I washed dirt off my Solex Solex Solex with Cleaner. And then I found out that it was not PHH it was ADDHE. Solex C.40 ADDHE. This is shocking. They are commonly used for Lancia and Alfa Romeo. Italian carbs for Italian cars.... I am doomed. There was a guy posting a question about difference between PHH and ADDHE. Noone replied... But my Z was running with them before!

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Ok for what its worth --i know rochesters not solex --but -but --what i would do if i had your trouble is this find out exactly what carb set up came on your Z from the factory ( assuming your engine is all stock meaning -not re built with hot rod mods (like big cams ect..) find these carbs (used)and the proper intake if needed (not sure) send them to a quality carb rebuilder -try the "carb shop "in orange calif -these guys are great with carbs--- get em back-- have your mech. bolt em on set em up thats it -problem with preformance carbs is that --simply-- if your engine isnt set up to take em they dont work- big jets, too much fuel, incorrect floats, incorrect idle system, ect ect.. other wise if you wanna use the solex's you got- youd have to re build them to the proper specs to run your stock engine -in other words theyre too big!! biggers not always better -LOL-thats why "preformance "carbs dont always preform ---wrong application. The factory engineered the stock carbs to match the engine -hope this helps

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Putting a carb on an engine is kinda like asking what kind of wine do you have with fish...any kind of wine you want the fish doesn't care...it's dead. In reality, it doesn't matter that the solex' were made for Lancia or Ford or whatever. If it bolts up and meets the basic requirements of your engine it will work and can work very well. Carbs ,sidedrafts or downdrafts, operate on the same basic principles. If the carb(s) is flows too much cfm or fuel for the engine requirements at given rpm's it won't be functional except at maybe WOT. Bigger carbs do not make bigger power by themselves alone. I'm not familiar with Solex but I make the assumption that the PHH is the non-emission (racing) carb while yours is drilled to allow more air across the transition from idle to WOT reducing emissions on production cars. That is not a big deal in a street car and many track cars. It could be a blessing if your exhaust is sniffed during inspections. What you never told us was did the car ever run or run decent with this setup. Did it? Do you suppose the PO installed these without tuning and sold out because it ran like crap? Every piece in these carbs has a number on it. You need to disassemble one carb, at a time, and write down these numbers as they apply to specific pieces. This includes the casting number of the carb bodies. If they do not match in all three carbs you need to address that first. Did you replace all of the gaskets? Where did you get the kit? Maybe that would be a good first source for more info. The reversion to SU's is viable and easy to accomplish but the triple look is great and the sound stirs the soul. The triples can be made streetable with the proper chokes, jets, etc. You may be very close already or way the hell off. It sounds crazy but try your local book store or library. I find information much quicker there than on the web. The web is a big place though...type in 'solex' in various search engines and do a LOT of reading. You will probably find some basic tuning principles that will point you in the right direction. As for bits and pieces and additional info search for Alfa and Lancia forums. The truth is out there.

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Ok to clear it up I meant to say if you want to use the "solex "carbs they need to be rebuilt to suit your application --meaning there not original for your Z so they were meant to run some other motor --theyre jetted -rodded and the idle system is set up to run what they (the solexcarbs) were intended to run--My long winded point put simply if you took a tri power set up from a 66 pontiac gto threw( god only knows how ) it on a plymouth with a slant 6 it aint gonna work too well --see what i mean

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I think everyone understood where you were coming from. No insult intended so I hope none was taken. I was merely pointing out a bit more detail then had been covered. I've seen guys drop huge carbs on stock V8's and scratch their heads wondering why it spit and sputtered. Compromise is the way of life. Triples can run on a stock engine but don't look for 6K rpm runs or tune triples for a H.O. L6 and expect a smooth 650 rpm idle. We don't know if these carbs ever performed within reason on this engine...as such we're all making educated guessed at best. :stupid:

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I agree with both previous posters. Your are not doomed with having carbs from Alfa and Lancia. I have a set of triple Dellorto 48's (going on 3.1 ltr) that I stripped totally. These carbs were most probably from a Lotus engine (pair of carbs) and then they were put on a L series engine with another carb. The jetting when I stripped them was not even right for the 2.4 they came from to me, let alone mine. As mentioned before totally strip, make notes of numbers of the parts and do some homework. With the proper jets and setup they will run fine.

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Exactly what RIP260Z said he's dead on right. Sorry for the american "iron" anaolgy in my last posts -LOL--i was trying to say what rip260z in a long winded way the same basic principles apply when setting up a carb/carbs for any engine

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Hell, with the way fuel pricing is, you may want to re-evaluate your reasons for wanting to rebuild them in the first instance.

You have a L24 engine with standard head and exhaust manifold? Bolting triple carbs on the car will not give you the power that you think you'll get. The engine won't draw more air as a result of individual throats either. Putting triples on would be a part of a larger upgrade for the L24. To get the real benefit of them you'll need to consider a new cam, serious head work (after all that is where all the power comes from), extractors, ignition upgrade and a brake upgrade. All that will cost you some pretty $$$$.

If you are just spending money to make them a nice thing to look at them go for it. Do it and have fun with it. But for my money, I would do other things before putting my tripples on.

So sorry but I don't have anything to add to what has been written above by other members other than stop. Sit down with a large coffee, pen and paper, and list out the most important things you need to do to you 240z. Your list may include points like: re-furb of the entire braking system; re-furb and possible upgrade of the suspension components; replace all old rubber suspension arm bushings with new or maybe a strategic placement of urethane and new rubber bushings; sway bars; tyres; inlet/exhaust port matching. I'd pick all the above first and foremost as there is nothing worse than going faster and not being able to handle or stop properly. Remember that the rubber in those suspension bushes are now over 30 years old......hmmmm.

Sorry if I'm going off the intention of your thread but just think a bit about the car as a whole. You will see more benefit in doing the above "servicing" than just putting on triples and your wallet will be no worse off.

Triples and US$70 and barrel for oil don't stay together for long. Count on paying even more for fuel as we reach for "peak flow"

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