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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars |
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#31 | |||||||||
Leaky Injector
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![]() ![]() ![]() ![]() And thanks to others for the words of encouragment. It really does help when taking on something like this LOL ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() And on to the transmission! Hows it look? Looks like hot spots? |
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#32 |
Zilvia Addict
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Location: California
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For your shifter, I recommend an OEM shifter, brand new shifter bushing (very important and cheap), and a new seal for the boot. A very common problem with SR trans is the fluid will fly out of the shifter hole and coat everything, giving the constant smell of gear oil in the car. To prevent this, be extra careful while installing your fresh new shifter seal(s). I actually made a second seal out of high temp rubber hose (rated at 450*F for gasoline) to help seal up that hole, since it is such a common problem for fluid to escape.
This explains that damn smell!!! I though it was coming through the firewall! Regarding the stereo wiring those wires from Boston Acoustics are for a set of component mid-high range speakers. They are crossovers, I would yank all that shit out and wire in a new set since you don't seem to have the Bostons present. |
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#33 | |
Leaky Injector
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![]() Some more parts came! ![]() Made a mistake though.. Accidentally got a s13 MAF instead of the s14 ![]() Bent up and diiiirty.. Straightened with the back end of a butter knife and cleaned with 409 ![]() ![]() Big thanks to FRSPORT! GOTTA HAVE IT FOR ME COFFEEEEEZ ![]() ![]() ![]() ![]() ![]() |
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#37 |
Leaky Injector
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I wish you the best of luck. I'm sure others will agree with me but you have a long road ahead of you. Regardless... I'm glad to see you're willing to bring this car back to life. So many hack jobs in the 240 world.
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#38 | ||
Leaky Injector
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#39 | |
Leaky Injector
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#40 | |
Leaky Injector
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![]() ![]() ![]() Here's a lil clip from todays autocross. https://picasaweb.google.com/lh/sred...34017709556914 https://picasaweb.google.com/lh/sred...34017709556914 |
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#42 |
Zilvia Addict
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I'd throw the crossovers on Craigslist, just get a 4 channel amp and some decent 6.5inch speakers all the way around if you MUST have a system. I wouldn't even waste money on a system until the car is running though.
You can always do a system later, get that bitch on the road first! |
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#43 | |
Leaky Injector
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#44 |
Post Whore!
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A simple radio with some normal size lightweight speakers isnt going to hurt anything. If you decide to run OEM exhaust you need something to listen to anyways.
I run the OEM exhaust, with a cut-out, that way I can hear the engine when I need/want. Miles of unwanted cable, however, is unwanted. Every penny, toy, wire, nut, chewing gum that you find under your carpet and in the corners of the trunk you find is some 0.XXXX% of fuel economy and horsepower waiting to be unleashed. |
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#45 | ||||
Leaky Injector
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![]() ![]() ![]() ![]() So heres where I'm at.. I can't figure out how to remove that lower oil pan, am I missing something besides the bolts? my plan is to measure my bearing clearances Is this supposed to be sealed? Then I see this... My oil filter was still on when I flipped it but does this leak mean anything? I got my oem exhaust manifold ![]() |
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#47 |
Leaky Injector
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[QUOTE=SilviaHI;5940487]Haha thanks man, you should start a thread too!
![]() ![]() ![]() Haha yeah I thought about it but I wouldnt be updating as much as i'd like to. Too much computer work. I have a bunch of pictures so far though so maybe when I'm further along I'll post a brief summary of where I'm at. Anyway keep it up big dog! Can't figure out if I quoted correctly haha. Still getting used to this. ![]() |
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#48 |
Zilvia Junkie
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Is that valve open (it looks open)? Oil is making it passed the rings. I never tested but I don't think it's that unusual if it has been sitting like that for a while. Rings do have gaps.
If the valve is closed then it's an issue. |
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#49 | |
Zilvia Junkie
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#50 | ||
Leaky Injector
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[QUOTE=gabefromcali;5942438]
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#51 |
Leaky Injector
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Some progress..
![]() gotta do what ya gotta do lol Found some "H" metal things and ball bearings! Is this from a previously blown BB turbo? (penny is to show size lol) ![]() Soooooo... My plan is to take a visual and measurements on at least one rod bearing. I picked up plastigauge too. Tips are welcome! ![]() |
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#52 |
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Alright
1. "Is this supposed to be sealed?" That is an inspection plate. It just covers a tiny hole that allows you to see into the bellhousing. 2. When you turn an SR20 upside down the lifters all bleed out. So now you will have to remove the cams and lifters, and bleed the air out of them, before you re-start that engine. Never turn the motor upside down (or let the lifters sit sideways) for this reason. 3. Measuring a rod bearing is not going to tell you much, unless the whole engine needs to replaced. chances are that if the bottom end is in "trouble" then it is one bearing, often a single random rod bearing, that is in trouble. And trouble is visual, the bearing would look scored or ruined. "Plastigauge" is not a really useful tool for someone in your position. I am still in agreement that you could pull at least one bearing (either rod #1 or #4 IMO) Just to see that is looks decent. But I would put it right back to the torque you found it (FSM) without the use of plastigauge. finally, all the gaskets you see are just silicone. I would use Toyota grey (or permatex grey) on all the oil pan / water pump gaskets. One big noob mistake is using too much; I recommend you practice on another object to see how little it really takes to seal something up. Excess gets squeezed out, and can wind up in your oil strainer (pickup). Another noob mistake is going too tight; make sure you follow FSM torque, it does not take much tightness to get a good seal and overtightning will cause leaks and in the case of your thin pan, bent mating surfaces. |
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#53 | |
Leaky Injector
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![]() ![]() ![]() ![]() ![]() You don't think I can just run it and it will work itself out? |
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#56 | |
Post Whore!
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The camshafts can break if you do not torque them properly. Note in the instructions where it says to tighten the FRONT first, you want to do this gradually (do not simply tighten the first front two caps immediately to the first torque specification. Instead, bring them down 2/10 to 4/10 at a time, such that is takes 2-4 sequences, or 60 individual events, before the bolts have fully seated and begin to show 1-2 ft lbs of torque.) Once they are all "seated" and start showing torque, keep following the same sequence and now you are using the FSM sequence numbers i.e. 3ft lbs, 6ft lbs, 8.8 ft lbs Lining up the cams and installing the tensioner should be simple enough for you if you can count links and verify lobe positions. The cas sensor goes in a special way that should also be straightforward for you so make sure you look at that, and know where piston #1 TDC is on the crank pulley (second mark from the left, the yellow dot usually). And finally the timing. The sr20 is a fickle mistress when it comes to lights. Some timing lights will give you incorrect timing, and some will not work at all. When I find a light that works well, I keep it and hold on to it forever. I still have the same old unit from 10+ years ago. Anyways, once you stab the CAS and have the cams all lined up, everything is pre-oiled and the tensioner is back in, you want to set the valve cover on the motor (but do not tighten it down, just in case something is wrong and you need to go back under there) and it should start just fine, because the CAS if installed correctly will always give you a good starting timing number between 10 and 20* btdc. The final adjustment you make with the car idling. Heres where everyone has their own tricks, that is, where you get your signal. I get my signal from the center coilpack wire of coilpack #1. I simply pull back the loom a bit and strap the pickup onto it. And heres the final trick: the pickup is reversible. If your cas is somewhat center, and the timing light is showing you some inane number like 35* that doesnt make any sense, reverse the pickup (flip it upside down) and check again. |
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#57 | |
Leaky Injector
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On another note, I've been getting parts and waiting on others but here are 2 little challenge I encountered today. Help is welcome and NEEDED ![]() I picked up a downpipes for $30 and it will need some modification... As you can see, the exhaust that came with the car has been chopped up except the axle back muffler and the flange is turned the wrong way. I think I will install a universal/custom short catalytic converter AND flex pipe in the gap. EDIT: I can't find super short cat and joint that would in there thats not going to cost hundreds so I'll need to find a cheaper alternative. Hows the placement of that wideband bung? I believe its supposed to be located a foot AFTER any bends.. Is this one okay? Yay all 3"! CHALLENGE 2 Turns out my JDM JUICE multi-piece wheels have a leak. One rivet has a air leak. Its hard to see but there is an arrow right below the most right spoke. I've done some reading on how to reseal the one rivet but input is welcome. It looks like Riverside, the Japanese company that makes the wheels, does not have a contact number so I'm not sure of the torque spec so I picked this up. .. It measures torque when both removing AND tightening ![]() ![]()
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Happy wrenching! ![]() ![]() ![]() Last edited by SilviaHI; 10-03-2015 at 05:06 PM.. |
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#58 |
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The exhaust should be the simplest, cheapest thing you do to your car. Ebay downpipes are something like $40 now and the test pipe part is no longer necessary on some of them. The only thing after that you need is an OEM exhaust system which can be found locally for $20 whenever I needed one. Literally should be a $70 venture max.
The wideband should be 3-5 feet from the turbo (the wideband should stay below about 1000*F), with as few joints and gaskets between itself and the engine. An exhaust leak will make the sensor read incorrectly; this is why we prefer to limit the number of gaskets (places to leak from) in front of the wideband. The turbo flange needs an OEM gasket and about 1-2 hours of work removing ancient built up carbon (pretty sure I mentioned that alrdy but...) then you use brand new OEM locking tabs followed by an OEM outlet (or other high quality outlet. Ebay brands are known to crack). And finally it is essential to connect the trans-downpipe bracket. |
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#59 | ||
Leaky Injector
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![]() ![]() ![]() 2. Move bung back, got it 3. Prep flanges and new gasket and hardware, check 4. Downpipes bracket, without a doubt!
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