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mlracing 1971 Skyline 2000GT Sedan (Hakosuka)

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Went down to the shop and did some fiddling today. Short story, car runs on the triple carbs now, but won't idle. With a bit of throttle actually doesn't feel too bad but yeah long way from running nice yet. I purchased some new gaskets but turns out there were a few that weren't right so need to get a few more which I hope will improve the idling and running of the car. 

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Old gaskets meet new gaskets.

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This is where I set the timing. Originally it was a bit on the retard side but read that it should be advanced for triples and this seemed to be about where it ran the best. What I'm not too sure about is the vacuum thing on the side. I presume I've got a vacuum advance distributor so unsure if leaving that vacuum line unpluged will make it run worse or better as there's nowhere for it to go.

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The new throttle cable looks and feels super nice, and it's strong too. A bit thicker than the original. It is a little longer though which is kind of annoying to route but seems to work.

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Janky ghetto fuel hose routing seems to work.. no leaks amazingly. Ideally get an electric pump, fpr etc down the line.

So next on the list is to get the cold start/choke circuit working as I did find it would idle better when I activated couple of the chokes on the carbs manually. The interesting thing is even with the OEM single carb it wouldn't idle properly when cold (but it did run better than this) so I wonder if there is a different cam in here or something; it was always a bit lumpy on idle even once warm.

Specs on carbs anyway are:

Triple mikuni 44s
150 mains
200 air
60 pilots

I did get some 57.5 pilots but seems like it runs a little better on the 60s which is kind of interesting as Mikuni recommends 52.5 for an L24 which is about as close as USA gets to an L20.

Thoughts, ideas, abuse etc all welcomed here - https://oldschool.co.nz/index.php?/topic/49704-mlracings-hakosuka/&page=8

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I like setting easy goals because then it makes you feel good when you complete them. For my brief time back in NZ I decided I needed to get the car running with the triple carbs as when I left for Aus I had just got it running but it wouldn't idle and was generally not going well. 

Since buying the TA22 in Aus which also has Mikunis on it I've learnt quite a bit about tuning them and setting them up which I've been able to transfer to the Skyline. So when I had a bit of spare time I started by checking the pilot jet settings which were waaaay off. No wonder it didn't run well. Fixed those up, cranked it over for a while to get the gas to go through (mechanical fuel pump) and with some dodgy choke opening and throttle fiddling the car started. 

Took it for a burn up an down the road and considering I spent only a couple of minutes with synchrometer it works really well. Idle is a little high at around 12-1400 at the moment but it sounds good when the carbs are on song !

One thing I haven't checked is the timing so I've purchased a timing light to do that sometime in near future. 

Aaanyway novel over, here's some photos of stuff. 


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Another one of the tasks I wanted to do is install a choke cable (or starter wire) for the triples. The one that was for the OEM single wasn't long enough and as I found out it anyway the previous owner just used one which was for a twin carb setup and cut one of the wires off! Mine is kind of janky and sort of works but it's not really that good. Maybe not required now that I've sorted out the basic jetting but it's something. Mainly has issues on the right side where it goes into that first holder. Needs a better mount somehow.

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So being that I just took the car out for it's maiden voyage on the triples there was of course teething issues. One of them involves this pipe here. The brakes worked pretty much as well as they did before (to my knowledge) however the brake pedal was pulsating kind of with the motor. I'm informed this hose should have a one way valve in it so have now purchased one and should be here next week.

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And a parting shot for your time. Also a quick walkaround if you're on Instagram - https://www.instagram.com/p/BkqjBL3gbW7

Chat - https://oldschool.co.nz/index.php?/topic/49704-mlracings-hakosuka/&do=findComment&comment=1936391

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Well I had to take my big brakes setup off my Crown (6 pot 380/4 pot 356) so I thought I'd upgrade the Hako ones.. 

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After a little bit of custom modification to the dust shield or whatever it is this happened....

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That's an 80s Hilux (reproduction) 4 pot caliper. These fit on without any modications whatsoever, exact same bolt holes and fit around the disc fine. There's also one advantage of having the brake disc mount behind the hub.. miles of clearance! 

Thinking I'll probably need to get custom lines made up to match the new to the old but otherwise, success. So a decent up grade from almost 50 year old twin pots to 4 pots. 

Also I plan to just remove that heat shield thing from the hub anyway or cut it off properly when I finalise the install on these so it won't be all super cutty.

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