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NismoZ

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Posts posted by NismoZ

    Side draft issues

    in Fuel Delivery

    Posted

    Thanks for the replys guys, so the weber shafts will work with the dell's? If so that would be nice considering the dell shafts are a little pricey. I think ill give the shaft a twist with a small wrench on the flat ends.

    I hope it doesn't damage the threads. BTW will the shafts snap if I'm not careful?

    Side draft issues

    in Fuel Delivery

    Posted · Edited by NismoZ

    Ok guys, Ive been having some issues with one of my dhla not flowing evenly and I need a suggestion on how to get this carb right. It seems to have a twisted throttle shaft, I had a peek through the progression hole covers to see where the butterflies were set at idle and one is at the first progression hole while the other is at about 8th ahead of the other. When the engine is running with the air bypass closed, one flows at about 2in/hg while the other is at about 5in/hg at about 900 rpm. Is there any easy way to correct this issue? Can I just twist the shaft back?

     

     

    Any help is appreciated.

     

    Thanks

    Weber jets??All who live for their triples please read this

    in Nissan L6 Forum

    Posted

    Well, the handy calculator program carb thingy says....130mains, 180 airs, and a 50/7850.2 idle....I would compare that to what the speedpro book says for lean / rich in the idle emulsion and go fro there.....I dont know the delorto numbering system off the top of my head....but you should be "close" with what you have....at least close enough to get it running and on a dynocool.gif

     

    Got a problem, I cant use the 7850.2 idle jet holders on the emission type carbs, it would be useless according to Alfa...

    TWM Intake manifold issues

    in Trouble Shooting / General Engine

    Posted · Edited by NismoZ

    Make sure all your vacuum port plugs are TIGHT...the 6 grey ones and the blue one...use zip ties if you have to

     

    What grey vacuum port plugs are you speaking of? the ones for color tune right next to the progression hole plugs? I have tried to get these flowing evenly but every single one flows more or less than the other even on the same carb. Its like the butterfly's are not equal on the same carb is this normal? These are second hand so Im not sure if it me or a problem with the carbs. They are all opening at the same time more or less, I have got the linkages all the same length so im kinds stumped.

    TWM Intake manifold issues

    in Trouble Shooting / General Engine

    Posted · Edited by NismoZ

    Post a picture of the carbs...I am curious as to which Dellortos you have...do you have the Speedpro Book "How to Build & Power Tune Weber & Dellorto DCOE & DHLA Carburettors". if not I would suggest you get it. Are you trying to pull vacuum off of some port for your dizzy? I would recomend against it...just plug all the vacuum ports...but do get the tuning book, very usefull.....but remember...fuel quality has changed dramatically since these books were written

     

    Yea I just got the speed pro book.. I have the DHLA N carbs, I do have the the vacuum advance plugged, didn't plan on using it. Here are some pics, the side with the blue cap is the one that is flowing more than all the others.

     

    TriplesDHLA.jpg

     

    Tripples.jpg

     

    Tripples001.jpg

    TWM Intake manifold issues

    in Trouble Shooting / General Engine

    Posted

    I have a question is the carb body with the vacuum advance suppose to have more vacuum than the other carbs? I have the emission type carbs with the idle bypass and no matter what I do I cannot get one part of the throttle body to sync with the others (the one with vacuum advance nipple) it always has higher vacuum reading. Also what causes the carbs to backfire? car seems to still be running ruff or missing. I tried spraying carb cleaner where there could be vacuum leaks but got no results...

    TWM Intake manifold issues

    in Trouble Shooting / General Engine

    Posted

    Yep, running them on my car right now...Cannon Manifold / Pacesetter Header. If you notice...some of them are cut square as well. It is a "VERY" custom fit. Recomendation from Dave Rebello to use that header instead of the Nissan Comp. It has equal lenght runners, actually fits the car nice, and flows almost as well as the Nissan Comp unit.

     

    DSCF0275.jpg

     

    Ok glad to here that, I wasnt sure if the washers would give after being filed so thin but I guess it should be ok then. That header flange looks thin what is its thickness?

    TWM Intake manifold issues

    in Trouble Shooting / General Engine

    Posted · Edited by NismoZ

    Good job getting them flat, and good luck getting those Dellortos tuned cool.gif

     

    Thanks.. Now all I need to do is make or have made some washers with a .125 of an inch step so it can be snugged up.. then I can get to the tuning. I hope that step is less of a hassle.

     

    I was thinking about using a filed washer but at .155in Im not sure if I could trust it, what are the thoughts on that?

    TWM Intake manifold issues

    in Trouble Shooting / General Engine

    Posted · Edited by NismoZ

    Yea I was like WTH when I looked at it with the straight, I ended up belt sanding it today and it is nice and flat now. It was way warped for being a new manifold. I did buy it second hand from a fellow Z member that stated it was a new unit but you never know.

     

    btw thanks for the replys guys, Im going to give it a go again and see how it all turns out.

    TWM Intake manifold issues

    in Trouble Shooting / General Engine

    Posted · Edited by NismoZ

    Ok I got this problem I recently bought a triple set up and everything seemed fine. I went to install the setup yesterday only to find out I got a vacuum leak I cannot seem to fix. So I pulled everything back off to have a look, I placed a couple of straight edges on the manifold to see if that was the problem, turns out it isn't straight.

     

    Since this is my first time messing with triples and a aftermarket manifold Im going to need some advice..I mean is this the norm for triple manifolds?

     

    So here are some pics of what im talking about, they will be larger than life so you can see what is going on. Im hoping a resurface will do the trick but Im afraid it will need so much material removed that it will no longer be able to be bolted up with the exhaust washers. So with that said i need somebody who can tell me if this can be fixed.

     

    Big Thanks in advance

     

    TWM001.jpg

     

    TWM002.jpg

     

    TWM003.jpg

     

    TWM004.jpg

     

    TWM005.jpg

     

    TWM006.jpg

    Just finished s13 coilovers into s30

    in Brakes, Wheels, Suspension and Chassis

    Posted

    The thing is, if someone made adapters, they would have to be specific for certain coilovers, as not all coilovers have the same thread specs.

     

    Unless you can work out a deal on blanks, and then tap them to a customer's specified thread spec for their coilover.

     

    This is true.. although perhaps we could find the best applicable suspension and base it off those? It could be a little timely or difficult to do a customer's specified thread spec per order but not impossible. I would have to look into it more thoroughly for an option like that.

    WTB Triple setup

    in Parts Wanted

    Posted

    Im looking to buy a decent usable triple setup... I would like a setup i can bolt up to the L28 and re jet if need be (no rebuilds). If you got a set you want to sell or dont need Let me know.

     

    Thanks

    What is too much cam for stock valve springs?

    in Nissan L6 Forum

    Posted

    Kinda doing this on two forums, so there will be a little repetition here.

     

    I ran a basically stock L28 with SU's and a medium sized cam for several years before I got Mikunis. .490/280 cam and SU's is a GREAT combo. When I bought the cam my friend (who actually sold it to me) was telling me how it was going to be too big, I'd have no bottom end, etc. After I installed it and took him for a ride, he immediately ordered a bigger cam for his 510. He had been running high lift short duration cams and had sold one of those to me previously, but the results were less than spectacular.

    Thanks Jon, with that said i guess a cam wont hurt then...what needs to be changed with a 490 lift besides springs and lash pads ? would it clear the guides and seals?
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