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Everything posted by Stock Car Mafia
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Zfan1, I am not sure what my driveline geometry is either but it seems to be close to inline with the rear diff. I have a 3/4" spacer between the tranny bushing and the trans tunnel mount to get my shifter up higher. If anyone knows of an easy way to measure the geometry I would be willing to do this and post up the results.
- 51 replies
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- swap
- motor mounts
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If you have the patience to read through a build thread, most of it is posted on mine. Any questions you have I'd be happy to help.
- 51 replies
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- swap
- motor mounts
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Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
Turns out I'm ready for the huge St. Paul car show this weekend. It used to be Car Craft but they moved that to Milwaukee. I'm not really a car show guy but there is quite a bit there to see. I failed to mention Katie and I took the car down through some windy back roads in SE MN a few weeks back. A DD kicked up a rock and cracked the windshield. This is getting repaired while I am at work tomorrow. Other than that I'll post up the dyno stuff when I can. I am taking a few nights off of car stuff! It's been a long journey but I still couldn't be happier! -
Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
Trust me, I have my share of typos in this thread. I guess thats what i get for using my phone. -
Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
Ahh, i was thrown off by the word plastic. But yes I need to sand off my paint so its machined surface against machine surface. -
Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
NewZed what exactly are you referring to? Im a little confused. -
Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
Friday night I was able to finish the intake routing and installing the catch can. My IAT's are down from 120-140 deg. to now around 80-90 deg. depending on the temperature for the day. I'll take this as a win. Car seems to be running fine exept for that drivetrain vibration at about 100 mph. We had the car on the jacks today and it seems to be one tire is out of round and the other wobbles in and out. I can see the rim moving a little bit probably proportional to the tire wobble so I am sure this is due to the paint that is on my brake drums. I'm swapping the tires for my stockers to see if the problem remains. -
Hell ya, bring that Z with up to MN!
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I hate to leave this thread open ended like 95% of threads on every forum. This is what I ended up doing...Here are the Dorman part numbers for what is needed. Inner CV Boot - #614-002 Outer CV Boot - #614-001 I brought both of these home to rebuild my axles and I didn't like the look of the gray CV boot. In a sense the boots are about the same damn thing. I ended up using 4 outer CV boots. That is the part number #614-001. These fit just fine with a little persuasion. These fit really tight around the MM or Chequered Flag Joe half axles but this is a good thing. Really, no clamps are needed there.
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Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
Well the weekend, bachelor party fun, and the dyno are really sneaking up on me fast and I am shaking like a leaf to get this all done before Monday. I did end up pulling off the intake a couple nights ago. I was shocked at how much oil was blown up through the intake just after 2,000 miles. I had cleaned everything up really well when I installed the new fuel rails. This is probably due to me refusing to allow any crankcase ventilation. The Mightymouse catch can will be going on tonight to eliminate this. I will have to say the LS2 intake is a POS. The porting is really jagged and not uniform from port to port. Also that sonic welding they use doesn't "weld" very well as I could tell on some edges. What I did was take out the ports to about 1.050" from 0.950" I believe. The majority of the work was done to level out the ports for better flow and do my best job to port match each cylinder. There was a rough lip on the inside of the TB side that was cleaned up as well. Then there is a large bump on the intake runner #1 that restricts the flow past that opening lip. All of this was shaved down as well. I used 60 grit for the rough cuts. Then followed with 220 sandpaper and 360 grit red scotch brite. On top of all of this, I finished my port and polishing of the throttle body. I was only able to get everything bolted up last night before it got too late. The shipment from silicone intakes made it yesterday too so I should be able to reroute my air intake and filter. -
78 280Z LS3 Project
Stock Car Mafia replied to alainburon's topic in Gen III & IV Chevy V8Z Tech Board
dsommer, it's best to do it right! There will always be little things that need to be done. -
78 280Z LS3 Project
Stock Car Mafia replied to alainburon's topic in Gen III & IV Chevy V8Z Tech Board
Holy crap. Are you saying this thing might run in a few weeks? -
Apple Slicer's 1972 240z Build
Stock Car Mafia replied to appleslicer's topic in S30 Series - 240z, 260z, 280z
Wow, yet another swap that seems to be promising! I do have to say you got a FANTASTIC deal on the car. That is really hard to come by. And yes you always take a chance with someone else's wiring job... On the car for a daily driver. I will say this should be no problem with an LS motor! I second the vote up top for keeping a DD until you complete your build. It will take a some time and I advise not to rush it! In all reality, it is a lot of fun and very relaxing to work on the car. You get to see the progress and have blood, sweat, and tears invested in it. Enjoy it while you're in there as (hopefully) you're only doing the swap once. I say leave the paint and that work til absolutely last! You never know what you might want to cut, grind, or weld on as you transform the car. You might get some crazy idea other than driving it on the daily! -
TrackZpeeds CXRacing LS1 T56 240z
Stock Car Mafia replied to trackzpeed's topic in Gen III & IV Chevy V8Z Tech Board
This looks like a great idea! Do you have more pictures of how you put that together? What are the turn buckles used for? -
Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
I took the car to CnC in Chanhassen yesterday. I took it easy getting there and saw some great cars. I did get on the gas a few times and the car went in to limp mode 2 times... I am getting codes for the MAF and TPS sensors. Typical of a bigger cam. So now it is taking it easy until the dyno tune! I did take the throttle body off yesterday after the show and shave down the two lips in front of the blades. I have yet to polish this. List of items to complete before July 11th: * Port and polish throttle body. * Port and polish intake * Route air filter in front of radiator * Install Mightymouse PCV can - Wire resistor in tach so it actually reads I think this is it for now! I'm off to find some good roads to hit today... -
Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
I decided to rebuild my rockers with a trunion upgrade. I went with the new bushing trunion kit after reading about comp cam trunion kits have some nasty premature wear on the trunion. Those kits are really noisy to begin with as well. After seeing the needle bearings, I am glad I am getting rid of these... I used a 14mm and 13-16" sockets to press the center sections out. They do make a bench vice tool which I didn't know until someone on the LS1Tech site told me about it. I do have a press so I didn't need it. I used a 5/8" and 13/16" sockets for the install. I did grab 2 thick hardened washers (5/8" Grade 8) from Menards as well. These worked great at giving the trunion room so you can press the brass insert in flush. All of these parts were sitting in motor oil prior to pressing in. Now after my first rocker, I noticed that there was still some side to side play even with the fittings pressed in flush. I took the 5/8" socket and pressed each side in a little more to get then almost to the point of snug. I made sure each rocker spun absolutely free with no resistance. After that, the 32 snap rings were thrown on to retain the piece together. I like the way this kit looks! Let's hope these have a good lifespan. I pounded out the old crank seal with a punch and hammer. The new one was seated in with a block of wood. And I think this was the end of the pictures I took. The rest of the car went back together with ease. I did grab some green antifreeze and mixed it roughly to a 30% antifreeze/70% distilled water mix. I did throw a bottle of water wetter in too. After that I was going to wait for my neighbor to help spot but he didn't get back in time. I went to go start the car and she fired up on the first crank. https://www.youtube.com/watch?v=RqpbMvY1lSU The rocker upgrade is pretty damn quiet compared to the other sewing machines I've heard. I did 2 heat cycles on the motor and then dropped the oil Friday night. -
Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
I feel like getting out today so I will probably keep my post a little short. I decided to swap the cam and what not prior to Saturday. Thursday night I was able to strip the block down fairly fast to get it ready for Friday night. This stuff is pretty straight forward. This is where I got after unplugging the plugs, disconnecting the coil packs and unbolting them, and then pulling the valve covers off. The rockers were unbolted and the rocker guides and pushrods were pulled. When I got to this point, I knew the bottom two timing chain cover bolts were going to be a BITCH. I was thinking I was going to have to move the steering rack or drop the suspension...I removed the alternator and bracket as this was easy to remove. The crank bolt was really hard to break loose. Having the car in 6th gear and the parking brake on, the car still moved. I had to put blocks in from of the wheels to get it loose. The crank pulley can be pulled using a remover and the stock bolt but this is risky. The bolt is barely long enough to use. Just go buy the damper removal tool from the LS1TECH! It is worth the money to do things right... Here you can see how there is no room at all. I removed the other 8 bolts from the cover, and then loosened the bottom two and slowly moved the cover up to get them fully unbolted. I couldn't unthread them with the cover in place. The steering rack was just that close with the Hawk's kit... The LS2 has a timing chain guide that makes it a little difficult to see where the timing dots are. If you shine a light in from the side and look from the top you can spot it. These NEED to be lined up prior to unbolting the cam gear. I have a video posted in my photobucket for anyone that is interested. After the gear is removed there are some star head bolts that need to be removed. I think LS1's have metric bolts but luckily I had the bit for this. After that, throw some water pump bolt in and spin/flick the cam a couple rotations to get the lifters to stick up. For the most place they should hold in place. BEFORE MOVING THE CAM, make sure to get either the lifter holder tool or go pick up some 5/16" steel rod from Menards. I took mine and rounded the edges so if there were any finicky lifters it would be able to slide underneath it. These went in with EASE. Save yourself the tool money and just spend $4 for rods... Now is the time that you can slide the cam out. The first 25% is the toughest because you have to support the weight of the cam as you pull it out. Just go slow. In the end the removal and install of the cam is the easiest portion of this whole swap. I just used fresh motor oil to lube the cam, no assembly lube. After the cam is slide in, put the retainer plate back on and use Loctite on the bolts. Then put the cam gear back on with the dots lined up and getting the chain oriented right to bolt to the cam. This part is kind of tricky as you have to move it tooth by tooth if it doesn't line up, however I got it the first shot Use loctite on these bolts as well. Next up was the spring swap. I got the Crane cams tool and I personally would recommend it. I used antiseize on the bolts and this thing never locked up on me. I replaced the springs, seats, retainres, and the keepers. I was not going to change a valve dropping in the cylinder so I used the top dead center trick along with a compressed air fitting from a leakdown testing kit. Thanks to my sister-in-law Sophie for her sweet ass Snap-On tools! With the cam dots lined up, the motor is at top dead center for #1 and #6. These exhaust and intake valves can be worked on. Put the car in gear when you compress the cylinder. My car would roll forward as soon as I would hook up the air line at 80 psi. The best method I found to get the keepers out, was to compress the springs until you hear the valves open. I then cranked the ratchet about 6-8 more times. My air compressor is small so it turns on to try to keep up at this point. I then took a rubber mallet and tapped on the valves until they popped up and freed up the keepers. I used a pen magnet to get all 4 out. Use rags to plug any holes so they don't fall in the block!!! After #1 and #6 are done, it is rinse and repeat. Turn the crank 90 deg. clockwise and work on #5 and #8. Turn the crank another 90 deg. and work on #4 and #7. Turn it another 90 deg. and work on #2 and #3. After this, the motor is pretty much ready to go back together in the reverse order. -
Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
Well I started in to the cam swap last night. I will have to put up a how to after I get this all done. Here are some sneak peeks as I hope to finish it tonight....Still a ways to go. -
Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
In the end your's will be far more unique! If only we could do what we love to do everyday and not have to work... -
Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
I just punched in my gas receipts for the car. Coming up on a month on the road and we've already booked 1,777 miles! I've been lazy and haven't calibrated my speedo yet and my calculations are adjusted accordingly. I forgot to mention I did pull the wheels off prior to the trip and cut out more wheel well for tire clearance. I also went up 2 rounds on the coilovers which brought the car up another 1/4". The ride height still seems to be good without having the 4x4 look. One thing I forgot to mention is the Jeg's fuel level sender has been acting goofy. Ever since I've really got on the car, the sender get stuck close to empty on sweeping left handers. After the corner I have to jerk the car to the right to get it to even out. I am quite bothered by this! I am going to contact their tech support guys at some point probably after the dyno tune. I don't care to drain and pull the tank at the moment. -
Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
That's two votes for the flex tubing! I wrote this down to get some in. It should be an hour fix or so. -
Sirpents 260Z / C32 AMG Powered RS30 - Australia
Stock Car Mafia replied to Sirpent's topic in S30 Series - 240z, 260z, 280z
I didn't see you posted a video until now. That fab work looks excellent! -
Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
Thanks guys! -
Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
Here are the requested videos. I haven't done "exhaust" videos before so hopefully it helps. She said that the video is quite mellow compared to standing on the side of the road. So maybe it's a little louder than I envision https://www.youtube.com/watch?v=ZqkQBBBUodM https://www.youtube.com/watch?v=YiHkSWqCoac -
Stock Car Mafia's '78 280z LS2 Build
Stock Car Mafia replied to Stock Car Mafia's topic in S30 Series - 240z, 260z, 280z
Exhaust videos will be done today with the help of the girlfriend. Then you guys can be the judge of if it's too loud! Yesterday was a success. We drove 2 hours to have lunch with my family and then drove another 45 to see a good high school friend. We put on another 3 hours or so of driving after this through some windy back roads down to Wabasha, MN and some other small towns. Here are some things I found out. I still have a damn tire rub on hard ass bumps in the RR. I had the shocks set on 5 but bumped them down to 4. It could be from the fenders not being tacked and seamsealed yet but we will see. I had a driveline vibration at about 97 mph. At that speed you can feel it, so I am not pushing it past that point at this time. I am wondering if it is due to the drivetrain geometry with the Hawk's mounts. I need to look in to measuring these and then figuring out a fix. The car handles GREAT on corner entry/deceleration but pushes like a plow on corner exit. I want to say this is due to no rear sway bar or a combination of the this and the independant rear. I am used to solid axle cars so maybe I'm just dreaming. But no matter what I am going to get that rear sway bar in. I don't know why people say they don't fee a difference with and without the rear sway bar.... After this weekend it is going back up on jacks and hopefully all of this gets addressed before the dyno session. The cam and other components will be going in as well.