75Cameron Posted March 6, 2006 Share Posted March 6, 2006 I just started on my life long ( I hope not ) project on my Turbo Swap for my '75 280. It's a '81, but unfortunately I got it out of a wrecked car, and it was already pulled, which means DEAD engine harness and destroyed hoses and maybe some bad sensors.... But that just means a bit more to replace. LOL. I've got a lot of work to do on it. I'm really looking at doing the build correctly, even if it takes longer because of the price increases. I am looking at trying to get a good 300-350whp, with emphasis on the 350. I'll post some pictures of my first day with my new engine. I was just hoping to get a little bit of input about what you guys think would be a good start to get me to my goal. I was planning on the standard T3/T04 turbo, MSnS, 60mm throttle body, Isuzu NPR medium intercooler, 2.5" custom downpipe. I haven't decided which injectors I am going to go with and the fuel rail (if required). Anyway, what ever input you guys can offer would be extremely appreciated. Thanks a bunch! Cameron 75 280z Pearlescent White (L28ET Build-up In Progress) 5-speed Tokico Illumina Lowering Kit Strut Braces & Sway Bars Quote Link to comment Share on other sites More sharing options...
big-phil Posted March 6, 2006 Share Posted March 6, 2006 sounds good. I think most of the MSnS people are going with the Toyota Supra 440cc injectors. Quote Link to comment Share on other sites More sharing options...
75Cameron Posted March 6, 2006 Author Share Posted March 6, 2006 Ahh ok, what do they do regarding the fuel rails then? Can you use the stock fuel rails, or do they have them custom built? Quote Link to comment Share on other sites More sharing options...
Mr.INSANE Posted March 7, 2006 Share Posted March 7, 2006 75 cameron please to god tell me you still have the original l28e ive been searching for one for over two months now if you still have it are willing to sell and it was in good working order please pm me Quote Link to comment Share on other sites More sharing options...
75Cameron Posted March 7, 2006 Author Share Posted March 7, 2006 I do still have my l28e, but I'm not going to sell it until my build up is complete, because my 280 is my only car, and I need it running until my turbo engine is complete. Sorry! >.< Quote Link to comment Share on other sites More sharing options...
Mr.INSANE Posted March 7, 2006 Share Posted March 7, 2006 crap any idea on how long that will take Quote Link to comment Share on other sites More sharing options...
racerx260 Posted March 7, 2006 Share Posted March 7, 2006 You Need To Go 3 Inches Instead Of 2.5 . You Can Get By With 2.5 But With The Mods To Get 350 Hp Go 3 Inches. Quote Link to comment Share on other sites More sharing options...
Lewis Maudlin Posted March 7, 2006 Share Posted March 7, 2006 I also think you need a 3" downpipe and exhaust for 350whp. Quote Link to comment Share on other sites More sharing options...
75Cameron Posted March 7, 2006 Author Share Posted March 7, 2006 Ahh good point on the 2.5" down pipe. I figured 2.5" was low, but the sticky said it should be fine.... so I didn't know. But I always thought 3" would be better, so 3" it is! and 3" exhaust is a MUST, I agree completely. Any input on how large we think the injectors should be to accomplish this task? 5??cc - sound about right? Quote Link to comment Share on other sites More sharing options...
Guest 73Turbo240z Posted March 7, 2006 Share Posted March 7, 2006 Ahh good point on the 2.5" down pipe. I figured 2.5" was low' date=' but the sticky said it should be fine.... so I didn't know. But I always thought 3" would be better, so 3" it is!and 3" exhaust is a MUST, I agree completely. Any input on how large we think the injectors should be to accomplish this task? 5??cc - sound about right?[/quote'] 440cc injectors will get you there, and your stock rail should be hocked in favor of somthing else, be it pallnet or jsk units... PM me if you want to do it the quick and easy way as i have a 440cc/JSK rail setup availible that i could sell. Quote Link to comment Share on other sites More sharing options...
thehelix112 Posted March 7, 2006 Share Posted March 7, 2006 The size of the exhaust is more important the closer you are to the turbocharger. If you have a 2.5" dumppipe you are wasting your time/money going bigger afterwards. If you're budget limited, get 3" as far as you can afford then step down to 2.5. By that time the gas will have cooled some what and be occupying less space, so a 2.5 should be adequate. Dave Quote Link to comment Share on other sites More sharing options...
75Cameron Posted March 7, 2006 Author Share Posted March 7, 2006 Ahh Thanks Dave. That's a good point, but I really really want to do this build up correct. I'm going to try to dump at least 1k / month from here on into the project until its done. But as we all know, sometimes this type of project can get extremely expensive. 73Turbo240 - My understanding on it (even though it is limited) is that the 440ccs will get me to my goal but they would be pretty maxed out. And I would rather go a little larger so I have room for improvement later without need of replacing quite as much. Is this correct or am I way off? Quote Link to comment Share on other sites More sharing options...
75Cameron Posted March 7, 2006 Author Share Posted March 7, 2006 These pictures were taken after picking it up and mounting the engine on the stand. Wow.... ugly.... Quote Link to comment Share on other sites More sharing options...
75Cameron Posted March 7, 2006 Author Share Posted March 7, 2006 These pictures were taken after the first stage of tear-down, starts lookin much better! And a extremely pleasant suprise when I lifted the valve cover.... IT'S CLEAN (unlike my workbench)! Quote Link to comment Share on other sites More sharing options...
violacleff Posted March 10, 2006 Share Posted March 10, 2006 No reason why a 350hp goal should break the bank too much cameron. Are you planning on doing an engine rebuild? Does the motor run? My suggeston would be a stock rebuild, MS, T3/T4, arp head studs, ect... and take it straight to the dyno for tuning. The more research you do before making purchases the more you will save. I spent maybe 1500 bucks in stupid errors. Try and copy someone's plan and you will have a powerful car without having spent too much. Quote Link to comment Share on other sites More sharing options...
GrayZee Posted March 10, 2006 Share Posted March 10, 2006 If you are looking for injectors cheap, try and find some old Ford LTD or Lincoln town cars with throttle body style injection. The TBI units have two injectors mounted in them (yes you need to locate 3 parts cars) Remove 6 injectors from 3 different cars and you have 480cc injectors that basically pop right in. When looking at different cars, just make sure the numbers are the same. The ones I use have 400 for the last 3 digits. Also, read Afshin's sticky post on the z31 ecu/maf swap. You may want to consider that as a ecu upgrade or msNs as some cheap alternatives. Quote Link to comment Share on other sites More sharing options...
75Cameron Posted March 10, 2006 Author Share Posted March 10, 2006 No reason why a 350hp goal should break the bank too much cameron. Are you planning on doing an engine rebuild? Does the motor run? My suggeston would be a stock rebuild' date=' MS, T3/T4, arp head studs, ect... and take it straight to the dyno for tuning. The more research you do before making purchases the more you will save. I spent maybe 1500 bucks in stupid errors. Try and copy someone's plan and you will have a powerful car without having spent too much.[/quote'] Yes I agree completely on the research. I honestly do not know if the engine runs, because it was so badly beaten to **** when I picked it up. Block, manifolds and heads look fine, but all of the hoses were cut and the wiring harness was destroyed. I'm finishing my tear down this weekend (I HOPE!) and am going to have the head inspected, and the block rebuilt. So after replacing the broken parts/sensors, I don't see a reason I will have a problem as long as the heads and block check out. I really want to not just make it a build that acheives my power requirement but also does it "right", this car is my daily driver and I don't want to sacrifice much reliability with it. I just want it to be a GAS to drive and ... well kicking the crap out of a friends Evo 8 would be a plus. I'm reading Corky's book currently, so I have quite a bit to learn, and realize that. I was planning on the minimum that you mentioned above, but was considering fabricating an external wastegate/turbo flange. Similar to another on this site, but can't find it at the moment. It uses a spacer which mounts onto the OEM mount point, and then has a side for the turbo and side for the wastegate. It seemed like a pretty good design to me, and would easily allow the full T4, which could be fun. I am definately planning on upgrading the Fuel Rail, but haven't decided which one, or which injectors to go with it yet. But again, I don't mind if it costs a little more, that just means that takes a little longer to build up. But I definately want the power, and would love it to have that power running the lower boost of a T4. But I think that brings me into the "less charted" territory. Quote Link to comment Share on other sites More sharing options...
75Cameron Posted March 10, 2006 Author Share Posted March 10, 2006 Just found it! http://forums.hybridz.org/showpost.php?p=596511&postcount=7 This is what I want to Fabricate. It looks very nice! Quote Link to comment Share on other sites More sharing options...
violacleff Posted March 11, 2006 Share Posted March 11, 2006 Well now your're complicating things. You can make 350hp without a full T4 with an internally gated turbo, but it's your decision. Also you will have to take the risk of welding a larger flange to cast. Clifton hasn't had a problem so far, but just something to think of. I decided not to do it. I just machined out the T3 housing instead. I am running an external wg though. Quote Link to comment Share on other sites More sharing options...
thehelix112 Posted March 11, 2006 Share Posted March 11, 2006 If you've got the budget for it, I don't see why you would bother with older style turbochargers. Newer ball-bearings don't really have any disadvantages aside from the cost. Just my opinion I guess, but I can't see the performance, or reliability of newer turbos (talking primarily Garrett here) being worse. Can get some quite large internally wastegated Garrett turbochargers, more than enough for 350usrwhp. Dave Quote Link to comment Share on other sites More sharing options...
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