J Taylor Posted October 11, 2000 Share Posted October 11, 2000 I noticed you posted a pic of Walker's 280 in a previos topic. Just wanted to let you know that Z is now Jonathon Taylor's. I bought it from him with a blown motor about 6 weeks ago. Lovin it so far. BTW, he said he ran a 12.4 @ 116 with this setup....stock computer and mass air and all. I think that 12.7 was with the old T3 turbo and starion intercooler. It now has a Bell 27x10x3 intercooler and a big to4e turbo on it. Needless to say, that 12.4 was severely traction limited. I took it to the 1/8 track the other day and could only get a 8.5 @ 90 b/c of it getting sideways on me until the middle of 3rd gear. With that 116 MPH it ran I don't see it being a problem running some high 11's with the current setup. JT ------------------ 1978 280z with 280zx turbo motor. Big turbo, big intercooler, and alotta boost. 1984 300zx turbo....little turbo, no intercooler, and some boost....13.96 @ 98.9 http://turbotaylor.homestead.com/files/index.html Quote Link to comment Share on other sites More sharing options...
clint78z Posted October 12, 2000 Share Posted October 12, 2000 I don't know if Walker gave you the entire listing of what was done to the car . I followed his project very closely . That's not the first motor he cooked either . I would recommend getting a proper aftermarket EFI . This will make things alot safer, hopefulley won't blow any more motors . Tell us how he got those 17X9 rims on the car all of us are curious . Good purchase, Walker did some slick mods to his car . Here is everything I saved on his old your new car !! My car is a 1977 Z-car. It has a L28ET motor in it with 118,000+ miles. The engine has never been torn down and has only had the head off to fix the stock head gasket. It has run mid 12's @ better than 113mph for sometime now. I have a T4 turbonetics turbocharger, an MSD ignition(6-A), a three inch down pipe, a Bell Eng. boost dependent fuel pressure regulator, a large fuel pump one can aquire from Autozone(here is the part# E8248), K&N filter that draws cool air from under the car, and an intercooler from an 87' conquest(the intercooler from the 88'-89' offers a slightly more eficient core). I can easily run 17PSI on pump gas without fear of detonation. Total mods to the engine are under 1,100$ partially due to the fact that the turbo only cost me 450$ I drive the car everyday and have put 20,000 miles on it in the last 11mos. Hey Boost, You know a guy named Paul S? Has a 78 ZXT black w/ white stripes? Think he has pretty much the same setup you do. I know I rode in his car and felt how 17lbs of boost with no detonation feels. Question, I also have the BEG pressure requlator. How did you set yours up? What fuel pressure do you have dialed in as a baseline (with vacuum hose off) What's the maximum pressure you have it adjusted for? I have the same Auto Zone fuel pump with stock turbo injectors. Using a Volvo intercooler Ira sold me but thinking about switching to a Conquest unit. Thanks, Dave Dave how do you know Paul? Thats pretty cool... it's a small world after all. My BEG unit runs in conjunction with the stock fuel press. reg. It has a baseline of 32PSI and will go up to 50PSI. The BEG unit was set from Bell to come on line around 9PSI of boost. Fuel pressure will rise from the highest stock setting of 50PSI to around 85-90PSI for 17PSI. The adjustment on the BEG unit is turned all the way in and then backed out 3/4 of a full turn. This should give you similar fuel pressure. As for the intercooler Ira has another conquest one and it is in sweet shape. > Clint the part # Dave gave you is correct. It is a pump for either a Ford 460 or a Chevy 454...can't remember. Anyhooo the pump is fairly good but the important thing is that you get a fuel pressure regulator from Bell. The stock injectors can only feed about 11-12psi of boost without the added fuel of the Bell unit. If you are not intercooled then don't worry about the Bell unit. If you have the intercooler than you can run 17psi with the bell unit for enrichment. Make sure to test the fuel pump when you get it by hooking up a f.p. gauge. This is especially important with the Bell unit because the unit increases the fuel press. under boost. If under condition of greater fuel pressure than stock ie..60-80psi the unit should hold a constant rate. This means that It should not spike and then fall back to stock levels ie..55psi. If it does this than the pump is bad. We have run into a couple that would not produce enough pressure and hold it. The pump should easily sustaine 90psi. A good pump is quite adequate. The Autozone pump is feeding my mid twelve sec Z. The part number is E8248. Not sure what application it is designed for they had to order mine. Got it about two years ago for around $100.00. Has a lifetime warranty. I wish I knew more about the technical side of it (flow per hour, that sort of stuff). I installed it in the stock location, and had to run new wire to power it. It stays on constantly while the motor is running, the factory fuel pump wiring will not work. The reason I bought it was another guy I knew with the same set up as BOOST was using it to put his 280 into the high 12's also. E-mail me if you would like the number of the shop that recommeded it to me, they probably know more of the specifics of it. Or if BOOST is still around he can probably give you a more detailed answer. I recently broke an engine! The engine I have, or should I say car I have is/was basically a Whore. I will elaborate. I know 5 of the last owners in the last 5 years. Some of them never had a clue what detonation was, and I will admit I have detonated the stew out of the thing. Anyway I t finally took a toll on the old engine. It had 146,000 miles on it and the stress of being my car finally took its toll. 18psi one night coming home from work resulted in one of the loudest rod knocks I have ever heard. I spun a bearing. I think possibly that all the abuse this motor had endured, being a whore for so long, ended its life. I didn't detonate the thing that night but for weeks on start up I heard what sounded like a rod knocking. Didn't want to believe it but it was obviously true. Don't worry I have complete faith in these motors. Bought another 100,000 mile motor. Checked all the bearings and the were SWEET! Put it in the car and it kicks much booty. My friend Steve has 240+,000 miles on his and the only thing it knows is racing. I have broken rearends, not like broken in pieces(JIM) but were they were making horrindus noises. Have broken one early style transmission. Got an 83 n/a tranny and no problems in a year. I put a hurting on 2 clutches as well. I think that is all I have broken besides my wallet on occasion. I though Jim's set up was sweet but much to complex for me and even though he did beat me (my car was down 5-7mph at the end of the track that weekend) he should have mopped the floor with me based on the dollar figure he spent. He didn't. I think there was more tuning to be done to his car to his defense though. I liked how adjustable his system was but since I don't have the money for extensive dyno time, and that is what it would take, I will just see how far I can push this factory Set up. Later Clint, I simply pulled the black cover off the side of the afm and loosened the set screw that holds spring tension on the door being sure to first mark the stock location. I then cranked up the spring tension by turning the plastic gear. It took a couple of tries to get it right but know the car pulls from idle to redline without being overly rich anywhere in the RPM range. I had to adjust the idle cicuit to get the idle right which is simply turning a screw on the outside of the afm. The Nissan service manual shows how to do this. I got the 370cc/min injectors from a Merkur XR4TI we had at the shop. RC engineering told me that they were the same impedence as my stock injectors and what the flow rate was. It has been a while since I did this so I can't tell you exactly how many teeth to tighten the spring to. If I get a chance I will open the thing back up and count it for you. I will say though that is almost a full turn from the stock point. The beauty of this is that I no longer have to use the Bell f.p.r. I just use the stock f.p.r. which gives a max of 52psi fuel pressure. Stock injectors do not like the 90psi needed to run big boost. One other thing I you are planning on getting the Bell i/c like I did...27"x10"x3" air density will be so much greater that the stock injectors will max out at 12psi@90psi fuel press. With a Starion unit I used to be able to run 17psi. Because of the diff. in inlet temp. the air is denser(more O2 per sq.in.). So what I am saying is the larger injectors are a must with such A large i/c. Oh yeah I tried to make 420cc/min work but they were not cooperating. With the 370's I have enough fuel for over 400hp so whith only 355hp I am safely within my fuel limits . Hope this helps. Jason there is a slight mod ification to the injectors. The Merkur injector is designed for a push on style fuel rail. In order for this to work with your Nissan set up you must pull off the o-ring and trim the plastic that surrounds the inlet for the fuel. When I say trim I mean completely off where only the underlying metal inlet is exposed. It will not look like the factory injector end. Don't worry. 5/16" fuel hose will slip over it and once a clamp is tighened down on it it will not leak. Make sure there is at least 3/8"-1/2" of metal showing or it could be a problem. As for the manifold, Take out the factory o- rings as these will not be the proper size. The o-ring that on the injector will, with a little WD-40, insert in to give a tight seal. I used injectors that came right off a car. It is possible that new injectors may not come with the o-rings. Do not worry they can be purchased from Napa. Later. I took a throttle body from a 240sx=60mm(stock is 50mm). I gained 11hp@16psi. The grand total now is 362hp@6,000rpm @ 16psi of boost. I will probably turn up the boost to 18psi next time. The most I have made at that boost level is 355hp. Last time 16psi netted me 351hp. This was dissapointing since 2 more psi should have been worth more than 4hp. This proved to me there was a bottle neck somewhere so I started by opening up the intake. I hope my air flow meter will make it to 375hp. I will let y'all know. Quote Link to comment Share on other sites More sharing options...
J Taylor Posted October 12, 2000 Author Share Posted October 12, 2000 Clint: the wheels are 18x8, not 17x9...seems like he had some 17's on it a year or so ago though. I realize he has toasted more than one motor....the one that came out of the car recently came out of a ragged out, wrecked parts car I owned at one time....god knows how many miles it had when I sold it to the guy that Walker got it from. Thanks for all the info....some of it's outdated but there are a few things there he didn't mention....will probably come in handy. There are some updated pics of it on my wesite if you want to check it out...going to update it again this week with some new pics off the trailer. JT ------------------ 1978 280z with 280zx turbo motor. Big turbo, big intercooler, and alotta boost. 1984 300zx turbo....little turbo, no intercooler, and some boost....13.96 @ 98.9 http://turbotaylor.homestead.com/files/index.html Quote Link to comment Share on other sites More sharing options...
BLKMGK Posted October 13, 2000 Share Posted October 13, 2000 It's got the TSW Trophies right? Details man! I'm looking at those wheels for my car possibly - it's the same color, same bumpers, and I want to know what mirrors those are What was done suspension wise to fit the wheels and are there any spacersinterferance issues? Nice car man! (grin) Quote Link to comment Share on other sites More sharing options...
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