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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Mon May 16, 2011 9:09 am 
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On go the filterbases and air horns too. You might notice that I've swapped out the old rubber fuel hoses for vintage-look braided cloth ones.
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And then the filters.
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Fuel rail...
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Then I started to check the valve clearances...but quickly realised that Tony Knight had set them up on the bench already...sweet!
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New plugs...I find that NGK BP6ES-11s work best. BP7ES seem to get a little more top end, but don't seem to idle so good.
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Then we set up the carbs. One common thing I hear when people see the engine bay, is a comment about how the Webers must be so hard to keep in tune. But to be honest, it's really quite easy. Now that I'm reassembling everything, I decided to give the carbs some TLC. First step is to measure the carb linkages, to ensure that they are all the same length, and they were...after all, why should they mysteriously get longer or shorter over the years :)
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Then I set the idle speed this way. Under these brass plugs are the progression ports.
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The progression ports are these holes, which give a slug of fuel when you crack open the throttle. You should set up the throttle, so that at idle, the edge of the throttle flap just about covers the topmost hole. Mine seem to idle best when the throttle flap covers the top 2/3s of the top progression hole. It's very important that you get this the same on every carb, because when they're off, you don't get that nice, crisp response when you gun it off idle. I used to sync my carbs by using devices that you stick into the airhorn while the car is running, to measure airflow, but I find that this is much more accurate. And easy, too :)
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By the way, to adjust the throttle flap, you tweak this throttle stop screw on the side of the carb.
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Next parameter are the idle mixture screws. I know from tuning with the wideband sensor, that the idle is best when these are screwed out 7/8ths of a turn from closed. But as you can see, it's very easy in my case to see that they are in adjustment, because the flats on the idle screws are both at the 9-3 o'clock position. You can easily verify that they are still properly adjusted everytime you open the bonnet, and they never seem to go out of adjustment by themselves (as I said before...why would they :) )
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Now that the carbs are all "zeroed", you have to follow suit with the throttle arms. First I hook up one of the carbs to the throttle arm on the jackshaft, and I loosen the remaining two throttle arms.
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Refit the linkages, and tighten the remaining two throttle arms, while you are taking up the slack with your other hand. And that's it, I find that after you set up the carbs and linkages on the bench like this, it isn't necessary to do any further tweaking once the car is running. I run these basic checks every time I do an oil change, but generally you don't need to adjust anything.
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The last thing, is to fill the radiator with plain, distilled water. As Tony Knight recommended, maybe coolant isn't such a great idea until the head gasket breaks in. I'll swap over to proper coolant after the engine's had a few hundred km under its belt.
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And she's alive! :)
http://youtu.be/PsvlrJYTmGM

I only had time to take her for a short drive around the block, but she feels great, and everything is back as it should be. Fingers crossed it stays that way...

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Mon May 16, 2011 11:54 am 

Joined: Sun Jan 30, 2011 11:50 pm
Posts: 14
Location: Townsville
kev wrote:
Ok you asked for it... :)


And it was so totally worth the wait.
:tu:


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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Mon May 16, 2011 4:22 pm 

Joined: Sun Jun 29, 2008 12:57 am
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Location: The Hills, OR
Good work. Time for more power??

-Robert

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Mon May 16, 2011 5:13 pm 
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Komeuppance wrote:
Good work. Time for more power??

-Robert

No, don't wanna break it again :)

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Tue May 17, 2011 1:40 pm 

Joined: Fri May 13, 2011 4:47 pm
Posts: 79
Location: Queensland Australia
hey kev
you know how you found that rust in the floor, not nocking jdm restos but,do you think you will ever strip the shell to bare and fix anything that might be there, or will you just play the waiting game on any hidden issues that are not here yet?
dchil15

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Tue May 17, 2011 8:13 pm 
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dchil15 wrote:
hey kev
you know how you found that rust in the floor, not nocking jdm restos but,do you think you will ever strip the shell to bare and fix anything that might be there, or will you just play the waiting game on any hidden issues that are not here yet?
dchil15

Hoo-boy, well that would be opening up a can of worms :) Once you strip everything naked and blast the shell to bare metal, that's when the bills just never stop coming :lol:

My attitude at the moment is that I've had the car for three and a half years, and the Japanese repaint was done in 2005. While there are parts of the bodywork I'd like to re-do, nothing is really "in trouble" and the body is pretty much as it was when I first got it, so it's not like there's any ticking time-bomb in there somewhere.

There's a few spots I would like to do, for example the front apron is new, and looks like it was replaced at some point in Japan when the car had a minor front end accident. The rails are fine, but the box section behind the apron could do with some sections cut out and replaced. Also there's some spots on the boot floor and spare wheel well which should be cut out, but at the moment everything's holding steady with rustproofer and wax, so it can wait until I buy a welder and all the bodywork stuff to learn how to do it myself.

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Wed May 18, 2011 6:49 am 
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Well here's what the brakes look like. I'd thought that the Hako came with the same brakes as the 240Z, but it seems that while the caliper might be similar, the disc is 250mm instead of 270mm.

After Wakefield the pedal was very long and there wasn't much braking power, even after I'd bled the fluid at the track. The pads must have been pretty cooked, so it seemed a good idea to replace them.
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This is part of the problem :lol: the disc may be small, but the pads are tiny :D
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But changing pads in the Hako is pretty much a 5 minute job, you just pull our these pins...
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And the old pads just slide out. I then use the old pads to lever/push the caliper pistons back.
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New pads just slot in and you're good to go.
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I find that when pads get really overheated, they kinda go into a concave shape, so I'd sanded back the old pad to a semblance of a flat shape and also filed an angle into the edges of the pad (you'll notice the new pad comes with them). I find that if brakes feel a little secondhand after a trackday, this (along with a fluid bleed) brings them right back again. But not this time, the pad material was actually a little crumbly.
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New pads refitted, the brakes feel great again. Well, they'll do for street use until we come up with some sort of disc/caliper upgrade.

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Wed May 18, 2011 8:03 am 
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Location: SF Bay Area, CA
whoo hooo the hako is back in action! glad everything came together and ran the first time! :tu:

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Thu May 19, 2011 7:14 am 
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http://japanesenostalgiccar.com/2011/05/18/hot-wheels-x-jnc-hakosuka-nissan-skyline/

I didn't expect to see our magazine logo on the door! Consider me blown away...

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Thu May 19, 2011 6:00 pm 
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Location: Napa Ca
The brake calipers look a lot like the ATE ones on my Alfa. That said, the pads on the Alfa are almost twice the size of the ones on the Roadster and the roadster still stops better. Its got bigger rotors but much smaller pads. I guess with the smaller pads more force is applied to a smaller area giving more bite? I managed to get about 1000 street miles and one autoX before I did the Laguna Seca race on the first of the month on my KFP Gold pads. I raced hard all weekend and still have brakes, but the pedal is a little on the long side. Its ok for the street and will likely be the same way for my next autoX.

I've heard Endless makes good pads, but I've never used any of them. The pad compound seems to be more important than the size of the pad its self. Carbon/Kevlar compounds seem to work pretty well and not chew up rotors either.

Will

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Thu May 19, 2011 6:25 pm 
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Endless pads are great, but the only compound they offer for the stock C10 calipers are the "street" compound. Work and feel great for daily use (and importantly they almost emit zero dust) but I think the heat buildup is just too much on the track.

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Thu May 19, 2011 8:09 pm 

Joined: Sun Apr 20, 2008 12:37 pm
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Location: Sugarhouse, Utah
kev wrote:
http://japanesenostalgiccar.com/2011/05/18/hot-wheels-x-jnc-hakosuka-nissan-skyline/

I didn't expect to see our magazine logo on the door! Consider me blown away...

Image



ok, I'm officially on the hunt for these now... gonna have to get me a handful of 'em :tu:

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Fri May 20, 2011 12:42 am 
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kev wrote:
http://japanesenostalgiccar.com/2011/05/18/hot-wheels-x-jnc-hakosuka-nissan-skyline/

I didn't expect to see our magazine logo on the door! Consider me blown away...

Image


....and we have to wait for a few months before we see them over here........... :cry:

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Fri May 20, 2011 9:56 pm 

Joined: Sun Apr 20, 2008 12:37 pm
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I went to walmart today looking for them and didn't find anything. so I grabbed an oil filter and a jug of 10w40 to change the oil in my mx3 8)

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Sat May 21, 2011 4:18 am 

Joined: Fri May 13, 2011 4:47 pm
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Location: Queensland Australia
yeah i can understand that.
but you know you might just find more when you cut those sections out.
any way i have an idea that just came to mind
build l31 stroker twin turbo for hako
buy 240z
paint 240z blue and fit air dam and spoiler roll cage suspention ect
fit l31 to z
sell z
buy s20
profit?
just an idea
dchil15

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Sat May 21, 2011 4:58 am 
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dchil15 wrote:
yeah i can understand that.
but you know you might just find more when you cut those sections out.
any way i have an idea that just came to mind
build l31 stroker twin turbo for hako
buy 240z
paint 240z blue and fit air dam and spoiler roll cage suspention ect
fit l31 to z
sell z
buy s20
profit?
just an idea
dchil15

That sounds like some really-complicated gearhead horsepower ponzi scheme

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Sat May 21, 2011 7:44 am 
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kev wrote:
Endless pads are great, but the only compound they offer for the stock C10 calipers are the "street" compound. Work and feel great for daily use (and importantly they almost emit zero dust) but I think the heat buildup is just too much on the track.


I can see that happening. At my first track day ever I went out on a set of Axxis metalmaster pads that were great on the street and within 2 laps I had a firm pedal and zero brakes. So much for that track day. :roll:

If you can find a KFP dealer look into a set. The gold compound is the track compound but I've been running them on the street with no issues. They last a long time as well depending on the track. We just finished a 24 hr race (yes a full 24 hr) on the same set of pads we started with.

Will

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Sat May 21, 2011 5:23 pm 
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dchil15 wrote:
snip
build l31 stroker twin turbo for hako
snip
just an idea
dchil15


NOooo! A turbo on a Hako is sacrilegious! Just say NO to turbos :P
NA all the way :tu: :D

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Sat May 21, 2011 6:04 pm 
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GT-R380 wrote:
dchil15 wrote:
snip
build l31 stroker twin turbo for hako
snip
just an idea
dchil15


NOooo! A turbo on a Hako is sacrilegious! Just say NO to turbos :P
NA all the way :tu: :D

No, you see, part of the complicated ponzi scheme is that the twin-turbo L31 is only installed in the Hako temporarily until we can find a Zed to put it in...well I think that's the plan anyway.

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 Post subject: Re: JNC Project Hakosuka Build Thread
PostPosted: Sun May 22, 2011 2:02 pm 

Joined: Tue Nov 25, 2008 4:26 pm
Posts: 63
Location: Croydon
Yeah, I think he's saying that the L-series currently in the Hako could be used to build up a Midnight Club replica turbo Z, and that such a beast could then be sold for enough profit to fund putting an S20 into the Hako. Ie the L-series would be worth so much as a base for a turbo Z build that it Kev could afford to replace it with an S20 like the original factory GT-R Hakos.

Now generally with tuning cars, you're lucky to get back 50% of what you put into building a car. If you were really lucky and there was a huge speculative bubble in J-tin (like there was in european classics in the 90s), then you could make a profit on such an enterprise.


I guess the reality is that the bigger-capacity L-series probably suits the Hako, and the use Kev puts it to, pretty well, so he's not driving round thinking 'if only I had an S20 under the bonnet'.


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