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HakosukaJD

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Posts posted by HakosukaJD

    what clutch/flywheel recommended?

    in Nissan L6 Forum

    Posted

    Should hold down the power you're making no problem, and it isn't so stiff that you constantly have to wonder when the clutch fork is going to split. That's a very common failure on the stiffer pressure plates, BTW so you might want to check yours carefully and replace it if it looks like it's worn thin where the pivot ball sits. Make sure to put some grease in there too!

     

    Uhhh...crap. Didn't even think about this.

     

    I just installed a SPEC Stage 2+ in my car. Can't tell you much about it as I've only driven about 50 miles on it. What I can tell you is that the pilot bearing was extremely tight and the throwout bearing looked quite different than the one on the transmission.

    Skyline Chassis Dimensions

    in Nissan RB Forum

    Posted

    do u have the same figures for the engine bay of the 240' date='260,or 280z...the ones in the other forum dont have that many measurments for what i need.

    thanks[/quote']

     

    That one will be a bit harder....I'll check through all my "Nostalgic Hero" magazines and see if I see it anywhere....

    Manifold/Intake port mismatch

    in Nissan L6 Forum

    Posted

    The gasket is fine....its the ports on the manifold that are too small.

     

    I had a gasket that where the intake holes were smaller than the ports. Funny part is that I didn't notice and ran it for a while. Then I took it off for some other reason and noticed. It hadn't torn up at all when I took it off, so I dremeled the holes out to match the port size, and that was that.

    Manifold/Intake port mismatch

    in Nissan L6 Forum

    Posted

    That was indeed what I was describing. So port matching myself?...

    Is that simply taking the manifold off, putting the gasket in position, marking the extra material and going crazy with el dremel?

     

    I'm not sure exactly what the problem is' date=' so bear with me while I try to help.

     

    It is very common to see the intakes have smaller runners than the head (if thats what you're describing). It can either be port matched to smooth the transition, or you can get a an aftermarket intake, or you can have your intake cut apart and ported out properly and then welded back together. Most people opt for option 1 because it's easy and a lot of people have done it themselves. Option 2 can run you anywhere fro $600 on up for a new manifold, but you may come across a used one cheaper than that. Option 3 varys depending on where you take it to have the work done.

     

    Now if your saying your gasket has smaller ports than the one you took off...then maybe you should check and see if it looks like someone has ported the head and then modified the gasket .[/quote']

    Manifold/Intake port mismatch

    in Nissan L6 Forum

    Posted

    So I replaced my clutch with a SPEC model (came with a throwout bearing that was quite different by the way) and since I had to remove the header while doing so, decided to replace the intake/exhaust gasket.

     

    I had a stock replacement gasket. When I took it apart, I find that the new gasket has intake ports about 5mm smaller in diameter than the old one (which matches the N42 cylinder head). The new, smaller diameter gasket does match the manifold ports....so what's the deal? Is it common to be a port mismatch between the manifold (smaller) and the cylinder head (larger). Where can I get a manifold with larger ports? Would it help? I would think you would get stall where the air dumps into the larger cylinder head port...any suggestions?

    WTF Water Temperature!?

    in Nissan L6 Forum

    Posted

    I'm not strong with electricity...but here is how I see it.

     

    The car is fine at speed, correct? (I think I saw that)

    Its hot mainly while idling and fine at speed (when the engine is under far more load)....so the coolant system itself appears to be intact.

     

    How long have you had those fans? How much current do they draw? How much is the alt supposed to push? You say it just died...is it possible it was low balling your current and dropping their air draw?

     

    Did you have the fans before the fire? Where was the fire?

     

    In relation to the fire, is it possible the fan motors may have partially delaminated causing an intermittent internal short which both cause an excess drain on the alternator and a lower fan output?

    Flywheel bearing ?

    in Nissan RB Forum

    Posted

    So anybody know where I can buy the pilot bush puller?

     

    It took me an hour to get the damn thing out today. I tried pulling with half of a gear puller. Then tried the "fill it with grease and shove a spline in there" trick. Finally, I just pulled out a damn chisel and took the thing apart.

     

    Are they always this much a pain in the ***?! I'm thinking the one in there was the original because I literally had about 30 degrees of play with the alignment tool!

     

    EDIT: and actually, I need it for an L6 rather than an RB.

    Discovered Gold?

    in Nissan RB Forum

    Posted

    The Japanese can be weird about clutches. I had an OS Giken twin put on my R32, and it was, for the most part, stock. I dynoed the car at 296PS wheel when I first got it, which isn't much above what I've seen stock cars get.

    Flywheel Part Numbers

    in Drivetrain

    Posted

    I did a search and found some info and a number for a Maxima flywheel...but....

     

    I have an N42 L28 block. I don't know if I have a 225mm or 240mm setup. In Japan, everything is 225mm, so that's what I bought as replacement. Since I understand the 225mm and 240's are interchangeable on all L-series blocks, as long as the starter can be adjusted, I just need to make sure the two match right?

     

    What is the Nissan Part Number for a 225mm flywheel that I can use? The local parts shop won't sell it to me without a part number. They don't speak English very well, my Japanese sucks, and my wife is at her 'rents for the weekend. They didn't want to sell me the wrong part. They showed me a list of about 5 numbers to include flywheels for the S30 and S130.

     

    Any suggestions?

    N1 Pistons - what diff to standard?

    in Nissan RB Forum

    Posted

    Above 500 HP there is a large jump in financial requirements. The transmission is going to need work, half-shafts, chassis strengthening, and the parts needed to make the power jump up in price about there as well.....

     

     

    Just curious' date=' but why are you building a motor to only make 400-500hp? My rb25 makes 489 rwhp with me tuning it and on pumpgas. This is on a completely stock longblock, down to the factory headgasket and head bolts. Just some food for thought.

     

    JT[/quote']

    N1 Pistons - what diff to standard?

    in Nissan RB Forum

    Posted

    At 500HP, you'll be running 1.2-1.4Bar...or (In the case of an R32) almost twice the stock boost.

     

    For $120 US, why take the chance?

     

    thanks Matt' date=' for a very full explanation. Much appreciated.

    How about the steel head gasket - needed or not for 500hp and the odd car day out but no full on consistent racing?

    regards Mike[/quote']

    N1 Pistons - what diff to standard?

    in Nissan RB Forum

    Posted

    I have the N1's in my 2.7L RB. I'm making 500HP and have seen quite a few track miles at Laguna Seca. They are the preferred pistons at that power for a friend who has been professionally building RB engines for 17 years. If you looking to go around 500PS, the N1's will work well for you.

     

    I am about to rebore my motor and am considering what pistons. The N1 pistons are only A$800 vs HKS at $1800. Has anyone used the N1 pistons and in what way are they different to the standard - eg thicker' date=' stronger material?

    Can anyone help?[/quote']

    KA Tranny - The Limit has been found!

    in Nissan L6 Forum

    Posted

    I'm almost positive the internals are the same on the Z32TT tranny as the R32 GTR tranny. Third gear is the main weak point and its good to almost 500 at the wheels....

     

    haha so now what to us guys wanting more then that!

    Z32TT tranny its gotta be i guess.

     

    i so need a ride in your car' date=' maybe you can help me figure out whats wrong with my damn Z..

     

    mike[/quote']

    How do I break in new factory RBDETT2.6?

    in Nissan RB Forum

    Posted

    On new ones, don't know. On rebuilds, here is what I was told. First start, mineral oil, 2500-3500 RPM for approximately 15 minutes. After that drive it normally, but stay below .5 bar for the first 500km, below 1.0 for the next 500km. Change to synthetic and rag away.

     

    This is from a mechanic who worked for NISMO for a number of years before opening his own shop. He now is a subcontractor for Mine's on their builds. He assisted me on a boreup and rebuild on my RB.

    mikuni triple carbs

    in Nissan L6 Forum

    Posted

    So would you recommend synching to the high, or low barrel?

     

    Low barrel would give me a lean condition in the high. High barrel would give me a rich in the low.....

     

    Or does it really not matter when the butterfly valve is open, say, at 3/4 throttle? IE the flow is so much higher than the difference between the two....

     

    I went ahead and synched low to help out with the mileage for now.

     

    By the way...this forum and you in particular, RULE!

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