kats

Hi Ben , You can find a good ZG , I think not taking so long time . This ZG was sold a right price for its condition, just in Japan pricing is crazy. Most of them are listed 8 to 13 million JPY , but all of them do not deserve its price because the condition is just like this car . I know you know about this but please do not forget about checking the paper before buying, the code 02662-0070 is a mandatory for proving it is a real ZG. Owning it In the US , the code doesn’t mean anything , but you may want to show it to a future buyer when you have to sell it . It is almost impossible to authenticate without this code . ZG doesn’t have specific serial number prefix on its body, and you can put every single ZG parts by your self to any car you wish . Only very experienced experts can tell the difference . RM Auction did provide the code ? I assume that kind of very professional and reliable, entertainment auction organizer is doing correctly as usual. Kats

I am so glad that seeing the real G-Nose set up out side of Japan. I guess your uncle was a rare customer who brought the set up from Nissan USA. Mr. K had a same thing on his yellow 240Z ! Kats

A kit for GTR master vac is not available and will never be available , Nissan said . Kats

Patcon , I agree , after seeing this thread I googled “Mustang power brake Japan “ , lots of shops in Japan are listed , they will provide the kit . I really want to introduce this to Japanese S30 owners if the price is better than buying a GTR master vac . Some S30 repair shops already might know about this , just people like me do not know about it . Even so , it is very nice to know that we have a choice more than one . BTW , 47210-E4625 and 4626 were discontinued and will not be available anymore, I have just received that reply from Nissan . Still waiting for the reply of 47210-R55@@ , a kit for Ken & Merry GTR master vac . Kats

Hi , I am asking the repair kit , I hope Nissan still making it . Here is a link of my friend Mr . Watanabe was doing about repair job using Ken & Merry master vac . http://z432.sakura.ne.jp/bmv01.html And Prince Craft is doing repair job for numerous Prince and Nissan master vac . http://www.princecraft.net/pc04.html I miss the 47210-E4626 , it was on Yahoo auction some years ago about 10000 JPY ( 90 USD ) , sometimes we see it , so I hope more coming in someday. Kats

Oh , Nissan said 47210-R5511 still available!! 42200 JPY without tax . It is weird that Ken-Merry GTR was sold only 197 ? cars , but Nissan is still selling it for the car . We have to push Nissan making more parts for our S30s which are still enjoyed so many people around the world !! Or, powerful GTR owner’s club boss threatened Nissan to make it , ha ha . Kats Also , Prince Craft in Nagano Japan

Hi , nice work!! And it is a great source for you in the US . In Japan, Skyline Ken - Merry GTR master vac is usable for 6 inch vac , internal parts are only usable, not usable the outer case . And it was still available at 2013 . I now am asking local Nissan if it is still available new . https://blogs.yahoo.co.jp/power_planning/56600650.html Kats

Thank you everyone, I think so too , no more covers , that is our loss . Mr. Sudo really love Fairlady Roadster , he also did his work for his car . Nice red interior and navy soft top ! Kats

Thank you Ian , I did not know about 16300 has such a designation, like you said it is used so many cars , and still you can buy 21430-16300 from local Nissan today . Somebody said the cap 16300 is used for trucks as well .

Hi , thank you spitz 17 , this is an old thread , I want to put something about the stitching at the seat bottom. My Z432 has the vertical stitching as you can see , I must say it is not the original. The seat bottom must be repaired at some point in the past . I looked the vinyl closely, and found it is different from the other side . Today I visited Mr . Sudo , he is a real craftsman of upholstery for S30 . He said my Z432 ‘s stitching is not original, he has been dedicated doing the job more than 30 years , he knows what is original. I placed an order to him for a set of my early seats three years ago , he said I will be the final customer for his S30 seats restoration, he has been saying when the vinyl runs out , he quit the restoration for S30 . He has sufficient amount of vinyl for GTR , so he his work continuously being made , but not in a hurry. I am waiting it’s completion, he already made some pieces, I can’t wait to see it . He of course knows about the difference of early and late model , he uses various kind of tools for each model. if you are the upholstery guy , you can tell how he make the seats nicely and there are numerous his experiences fully applied. He said he would be the only man who was successfully able to access to the original vinyl manufacturer other than Nissan . He managed to make the manufacture to find out the original mold and make it useable , then the manufacturer accepted his order , some length of roll (maybe 100 meters ? ) , he did it a long time ago , he said he was not sure he would be doing right thing or not . Soon after the cooperation with the manufacturer, the manufacturer was merged by a big company , then unable to make the vinyl again . I said he did it right for us ! Kats

Yes please Captain ! I would like to see it . Thank you for the joining, like the last time you showed wonderful experiments of racing wheel nut , I am interested in this time too . Kats

After asking some of my friends about this , I tend to think there was a simple sealing type cap which was is used for the Z432 . I said 21430-E4201 was the only part number for the Z432 radiator cap from the beginning to the end , but this may not be correct reviewing the Nov 1969 Fairlady parts catalog ( 1st issued ) . The catalog listed only Assy Radiator, not mentioned about the radiator cap which is used on the radiator. This indicates we might have chance to have a certain part number for the cap . Just they did not show it in the first catalog . 2nd issued parts catalog is dated 03/1970 , as it is said later , the cap for the reservoir tank was replaced new one ( plastic) from Jan 1970 . We see 21430-E4201 for the first time in this 2nd issued catalog , also it is still listing 21430-E4200 ( cap push , reservoir ) , without mentioning a new plastic cap (21516-C0500) . but ironically at the production line , workers put plastic cap for the reservoir tank when this catalog was issued . So , I think there would be a simple sealing type cap there , maybe sharing with other models , and we know , parts catalog is not always correct and updated . I found a cap at the Rallye Datsun Roadster, I think this might be the one “ simple sealing type cap “ , as not showing “ A9 “ on the right hand side like a pressure relief type cap . And at the center part , the round rivet is different from the pressure relief type cap . Kats

You are right, the tank must have a little opening for helping suction, that is a check valve for the metal cap , and a tiny hole for the plastic cap . I drove my Z432 today , and i checked the reservoir tank , I see the coolant level raised about one inch before the driving. Engine operated normally, no hard driving, I now have a STD about the coolant level . Seeing my Z432 , two pressure relief type caps are working without any problem . I thank you all for the useful inputs here , I am learning and I need to amend some of my comments. So now , Why my Blue 240Z’s reservoir tank has air in the tube ? Looks like the coolant does not flow back to the radiator . The radiator cap is a new , and is a pressure relief type .It must be operational for both ways , let the coolant go out , and back in . Becaues of the radiator is not fully filled? Or there might be some cracks in the tube ? I need to check, it is interesting ! Kats

Thanks w3wikes, no need be pressurized, but need to be sealed at the reservoir tank ? Kats

Manuals , Fairlady Z manual for Japanese customers, and I have a very rare Fairlady Z manual written in English . Kats

Thanks Captain ! I did not know there is a check valve , so , even in my set up ( two pressure relief caps ) , coolant can flow back to the radiator as long as the reservoir tank is pressurized. I want to hear depressurized sound on the reservoir tank, but every time I pushed the botton, nothing happened . I wonder my Z432's reservoir tank is operating correct or not . The Fairlady Z manual says " looking at the reservoir tank from outside , to see if the coolant level is sufficient, half of the tank " this instruction is the same for the early type and later plastic cap type . I think we are on the same page there. But for Kats' installation on his blue HLS30U, he is using the later type reservoir bottle and that means an unpressurised bottle, one-way system. It looks to me as though Kats is getting quite a lot of coolant in the reservoir bottle. More than I would have expected. Japan has been pretty hot (to say the least!) lately, so maybe the cooling system is struggling to keep up? Kats, is the pressure rating on your 240Z's radiator cap quite low? Thanks Haha Confused Sad Alan , I just poured too much into the reservoir tank, I tried to let the coolant flowed back into the radiator using gravity ! But yes , my blue L24 is struggling in the high temp , I saw coolant level became higher than that of before driving. Kats

Thanks Alan , it is a nice picture ! Back to this picture, what would have been like if there are two pressure relief type caps , on the radiator and the reservoir tank ? Now my Z432 is just like that , two pressure relief type caps. In my Z432 , can the coolant retun to the radiator when the coolant cooled down ? I have never driven my Z432 so hard , then I really do not know what would happen when the radiator overflowing. And my guess is , there would have been a pressure relief type cap only , would not have been a simple sealing cap. Because 21430-E4201 is the only part number for Z432/432R , and this is the pressure relief type cap . Kats

To begin with , Nissan Cedric, the coolant system . This is what we want to see , this picture explains exactly what the coolant moves between the reservoir tank and the radiator. We see the allows at the tube vice versa , and the radiator cap looks non pressure type , and the reservoir tank cap looks pressure type. This is excerpted from the L20A and L24 Nov 1969 manual . Also pictures from an owner’s manual of Nov 1969 Nissan Cedric. More to come . Kats

If my guess is true, the early set up on the reservoir tank ( push botton cap ) is useless. It becaomes "over flow catch tank " like Alan said. I need to see other early Z432s as much as possible to clear my question. Kats

For the early "a metal cap with a push botton" type reservoir tank, What I am confused is, seeing the manual , to my understanding, the manual is saying "pressure relief valve is on the reservoir tank , not on the radiator " . OK, However, I can not see any specific part number for the radiator cap which should be put on the radiator. I mean , in this set up, the radiator cap must be a simple "non pressure regulator " type. BUT , ,, We only have a single part number for the Z432 radiator cap , from the beginning to the end, that is 21430-E4201 , this is the biggest question to me. From Jan 1970 , simple plastic cap (21516-C0500) began to be applied on the reservoir tank, if the manual is correct, this means the radiator cap must be replaced by pressure regulator type, to achieve keeping good coolant temp in the water cooling system. But there is no new part number for the radiator cap when this new cap was applied. We only have a single part number for the cap on the Z432, "21430-E4201" , so , I guess Z432 is different from the manual in terms of radiator cap set up ...I will hold of my conclusion until I see the "non pressure regulator " type cap on the Z432 radiator. I will upload some pictures. Kats

Let me explain , I learned and confused, and found something may not correct on my Z432 ! Thanks Alan, Patcon, gnosez. Kats

Thanks Alan ! I learned , Overflow catcher , yes that is suitable for the bottle. So I think If I want dual path of the coolant, I should place the bottle as high as the radiator neck . I should make a bracket near the front shock tower . But I don’t think I would do it for my car . Kats

Once water cooled down, the tube has air in it . I found it . Why does the car have the bottle for ? I thought to keep the water in certain level . Any input appreciated . Kats

Hi , I installed the bottle into my blue 240Z , one small issue made a single bolt useless, the bracket of the upper radiator is interfering a little bit to the hole for the bottle bracket . I need to either cut or bent the interfering portion , but I don’t want to do it . Just let the hole vacant this time , I tightened only one lower bolt for the bottle bracket. I took for a ride and I don’t see any problem so far . Z432 has different bracket for the radiator, it is already concerned for the bottle. During this operation, I did not want any air bubbles in the tube from the radiator filler neck , I tossed the bottle higher than the neck , then water from the bottle goes into the tube all the way to the filler neck . Then I opened the cap little bit to let the water overflowing from the neck , then tighten the cap , now there are no air bubbles between the radiator and the bottle. Am I right for doing this ? Kats

Yes ,it is super ! So , I am thinking something.... Kats