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madkaw

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Posts posted by madkaw

    3.2 Build EFI N42 / MN47

    in Nissan L6 Forum

    Posted

    1 hour ago, Zetsaz said:

    I think he might have short injectors on there. The protunerz page specifically says not to use those. He's testing the clearance with the injectors instead of the supplied brackets which would have clued him in to why it's too close to the thermostat.

     

    Not to knock on the guy, I'm sure he got it figured out, but definitely seems like typical videos people post hoping to get some internet clout instead of spending their time actually working things out.

     

    A lot of folks on youtube and other social media tend to post these long videos before even asking the supplier about their issue, instead of posting the result then mentioning the problems they ran into and how they were solved.

    Plus he had the intake hanging loose . It’s a very close fit to the thermostat where a millimeter makes a difference 

    3.2 Build EFI N42 / MN47

    in Nissan L6 Forum

    Posted

    13 hours ago, Zetsaz said:

    What was painful to watch about the videos? I feel like this intake is not that much different from installing a different oem one. Only thing you have to change is where some vacuum is going to.

    Well, I guess other than the cable throttle needing to be installed.

    Well like this video saying “issues with new manifold “ . I don’t see issues for a manifold that is NOT  advertised as an exact OEM replacement . 

     

    There are some other videos . 

     

    Long time, No SEZ - (Old Timers SEZ Shootout Roll Call) - just for kicks

    in Non Tech Board

    Posted

    I realized I wasn’t keeping up with my threads . When I worked in the RR I would get stuck in hotels and had lots of time to post and desk wrench . Then I retired and went bonkers working on Z’s to support my habit . 3 years later and my back is broken and I just keep busy on my stuff .FB was okay but I do miss these forums . I especially miss the great talent here , but I am always referring people to this site for real info and not a social media opinion . 

    Funny thing is I bought a 720 and started posting on Ratsun because that was about the only site for these trucks . Today I looked and my thread has 40k views - who would have thought . The guys there have been very helpful and I try and ignore the threads that are political in nature . 
    This site has been the most helpful for me with my z . 

    • Like 1

    3.2 Build EFI N42 / MN47

    in Nissan L6 Forum

    Posted

    Well it’s a new year so time for a new intake - lol. I have issues with my intake so instead of fixing them right now I decided to take the easy route and buy a Protunerz intake set up.

    Pretty nice piece. Not many options for aftermarket intakes for our motors and glad to see they put this one together . Only found one issue with a misaligned hole that holds the IAC in place . I just altered the mounting hole on the IAC .
    Of course nothing is just bolt on . I have to change some fuel line placement and vacuum lines and also the CAI piping . Pretty easy stuff since I was running a similar intake . 
    I watched a couple of you tube videos that different guys made of their install - it was painful to watch . They shouldn’t be making any How To videos and they didn’t make PROTUNERZ’s look good . 
    I like what they did with the throttle body . There’s a port for the IAT and IAC . 
    The plenum has a PCV port on the underside! As well as the 4 vacuum ports up top . 
    I think the price is good for all 3 pieces - plenum, fuel rail , TB and all the hardware and fittings 

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    Custom intake L6

    in Parts for Sale

    Posted

    As far as all the comments about air distribution - you would be entertained watching my two widebands - that separate 1-3 cyl and 4-6 cyl . 
    I think any log style where the air comes in from one end will have some distribution issues under high vacuum situations . The important thing is that under load the air distribution is even . 
     

    Thinking about modifying my diesel intake next . Be cool to have air enter the center of the plenum and see what affects that has on air distribution. 

    Custom intake L6

    in Parts for Sale

    Posted

    6 hours ago, DuffyMahoney said:

    Sad, that is 10x better looking then the protunez. 

    I don’t think the Protunerz is that bad . I might actually go that direction . The runners on this intake are a little too short for where I want my power band . I could fix that but I really don’t want to do all that work. Too many other things going on . 
    If I wanted to go turbo it would probably be fine - but I doubt I’ll go that direction - ever :)

    Custom intake L6

    in Parts for Sale

    Posted · Edited by madkaw

    Custom Datsun/Nissan L6 intake manifold with fuel rail and and BBK throttle body with TPS. 
    Built on a Cannon intake manifold this custom intake manifold should bolt to any L6 cylinder head . I ran this manifold on a N47 head with injector cut outs on the head with no issues - just need to use proper gasket . Mates up with early heads with no injector cut outs also .
    Runners are 37mm at the head surface tapering up to 44mm at the manifold plenum . 
    BBK throttle body is 75mm . I used cable linkage mounted to black stand off bracket in the pic . 
    Injector bungs are for 14mm injectors . Custom fuel rail fitted with this manifold has 1/4 NPT threads at the ends with 5/16” nipples currently . 
    Manifold has 3 vacuum ports at the end and also PCV on the bottom of the plenum . 
    Cannon mounting flanges at head are standard thickness and do not require step washers .

    My project is moving a different direction and selling off parts that I will no longer be using . No defects with this manifold . I smoothed welds and polished the top surfaces only since that’s all that’s visible . 
    There is heat wrap on runner on bottom sides to protect against heat . I had no issues and this manifold performed great.


    asking 500$ plus shipping 

    PM or 

    sfinnerty1018@gmail.com 

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    SU carb question....SM needles, 5.5 turns down.....wow

    in Fuel Delivery

    Posted

    I went thru this recently on a customers car . Similar L28 with a Maxima head but with a Bonk cam -520 lift . 
    This car was an automatic which really made it a challenge . After playing with float levels I ended up about 4.5 turns with SM needles . Maybe you are pulling air from somewhere else ? I ran an electric pump if that makes a difference . 

    3.2 Build EFI N42 / MN47

    in Nissan L6 Forum

    Posted

    Some good news ! Rebello will be able to come up with one piston for me ! 
    BHJ Dynamics replaced my damper for free ! Their own investigation of the damper showed too tight of a tolerance for the press fit . That caused the initial galling and it got worse over time . I went ahead and purchased their installer to help make sure I get it installed properly . Really happy with Chris at BHJ - he stood by his product . 
      Maybe should have done this earlier but I will be using the head cooling mod on 5&6 cylinders . Also going to be more conservative with my timing . Also installing a knock sensor - but this is a N42 block and had to come up with a location for it . This will take some serious calibration to make it work - if it will work in this location . I had the module already installed on my MS3 . This is a Bosch sensor 

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    3.2 Build EFI N42 / MN47

    in Nissan L6 Forum

    Posted

    The latest . There was no signs of trouble before I found this . I was changing out cams and doing more port work when someone noticed in a pic that I had 1&3 pistons swapped - dumb ass . 
    Look liked my front seal was leaking so I went to change that and it took my a half day to get the damper off . 
    Decided to put some fresh rings in and found a broken ring in #6 . 
    So here we go with a complete rebuild . The bearings had some wear and it might be from dirty air being sucked in the chambers . 
    4500 miles total on this 

    I had done lots of timing changes with as much as 37 degrees total at WOT - probably too much .

    I drive this engine hard . Rebello told me I should have left the slinger off . Also to make sure I get 150lbs on the damper .

    Hope I can order 1 pistons - though mine are custom- ugh. 
    Not sure this change the way I drive it but I will be better about the areas I messed up 

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    Slop in new valve guides

    in Nissan L6 Forum

    Posted

    That’s not right . You are doing the right tests. Nissan clearances should be tight . I’d take it somewhere else . Most guides come sized that the intake will be .0015 and the exhaust will be .00025 . They might tighten up during install . I just went through this . The machine shop honed out the guides to .002 - so they said . It’s a bit tricky to measure guides . I doubt after install the guides needed anything after install . Nissan says the clearance is .0008- .0015 for the intake . 

    3.2 Build EFI N42 / MN47

    in Nissan L6 Forum

    Posted

    When I finally got the head on a work bench and measured the intake ports I realized that I left these smaller than other heads . It was necked down to 32mm in most ports . So I opened them up to 35mm - which is the absolute limit based on a head I cut up . I do have Bonks- stage 2 cam on hand which is probably better suited for my intake - but I might try both . I think the Bonk -1 cam would give better numbers based on increasing my port size . I know bigger is not always better - but compared to all out porting on the N42 , my porting is conservative at 35mm.

    The intake has been welded on once again . Flange is in the right spot and I decided to weld steps on the flange to eliminate the step washers . 
    Of course after all this welding I was skeptical this flange was flat anymore . I took to my friend/machinist/ welder/ CFD modeler/ and put it on his surface plate . It was bad . Because of its odd shape he couldn’t use his milk and had to hand scrap it flat . Andy is true expert at this . It took it little bit of time but he got it flat . It’s almost an art form . I also had him flatten out my flanges in my exhaust . I couldn’t get it to seal right and my attempts were sad - lol.

     

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