OZZ240 Posted September 9, 2008 Share Posted September 9, 2008 Yes, it is a fuel management unit that is designed to work in tandem with your stock fuel pressure regulator. The one from Motorsport Auto will not work because it in not adjustable into boost. You can find em all over the place like Summit racing, Superchargersonline.com, Ebay. I think I saw one recently that was an all in one unit so you dont need the stock regulator but it was about $100. more. Thanks for that can now add that to my list of what I need... so far L28 and stock ECU have this bit M-90 Mounting brackets, piping FMU Intercooler Header Pulleys anything else I should put on my list? Quote Link to comment Share on other sites More sharing options...
SHO-Z Posted September 10, 2008 Share Posted September 10, 2008 Use something like Mallory 4305M Fuel Pressure Regulator 30-100 psi it is pressure sencing Quote Link to comment Share on other sites More sharing options...
dum-bass Posted September 10, 2008 Author Share Posted September 10, 2008 Thanks for that can now add that to my list of what I need...so far L28 and stock ECU have this bit M-90 Mounting brackets, piping FMU Intercooler Header Pulleys anything else I should put on my list? Yes, a really good book on the subject like SUPERCHARGED by Corkey Bell if you don't already have one. Quote Link to comment Share on other sites More sharing options...
yellowoctupus Posted September 18, 2008 Share Posted September 18, 2008 Yes, a really good book on the subject like SUPERCHARGED by Corkey Bell if you don't already have one. I haven't read Corkey Bell's book, but A.Graham Bell (no, not THE Alexander Graham Bell, but another one I guess) came out with a pretty good book too, Forced Induction Tuning. Quote Link to comment Share on other sites More sharing options...
SHO-Z Posted September 18, 2008 Share Posted September 18, 2008 One more thing you need is a blow off valve. From my research if you do not have one you will blow your intercooler piping apart during motor braking. Found this on a TR6 supercharger upgrade. Quote Link to comment Share on other sites More sharing options...
dum-bass Posted September 20, 2008 Author Share Posted September 20, 2008 One more thing you need is a blow off valve. From my research if you do not have one you will blow your intercooler piping apart during motor braking. Found this on a TR6 supercharger upgrade. If you try to do a blow through system with a roots supercharger then yes you will blow the pipes apart. I tried that first with my system and it didn't work too well having to reattach the pipes all the time, plus it was really noisy but I can see where a blowoff valve would work there. After changing to a draw through system, I never had a problem blowing the pipes apart and it was quiet! a much better way to go. Quote Link to comment Share on other sites More sharing options...
yellowoctupus Posted September 22, 2008 Share Posted September 22, 2008 BOV necessity depends on what supercharger you use. With the GM M62 I have, it has a bypass valve built into the supercharger itself (actually like a throttle butterfly) which works off a vacuum acuator (which I think is hooked up via vacuum hose to the intake manifold). With this hooked up, you should only get boost under acceleration, when manifold vacuum is low. When vacuum is high (constant speed, deacceleration), it pulls the actuator and bypass valve open. Quote Link to comment Share on other sites More sharing options...
OZZ240 Posted September 23, 2008 Share Posted September 23, 2008 I have ordered my SUPERCHARGED by Corkey Bell book and it should arrive in the next couple of days. I'm thinking of going with a M90 from a Thunderbird Super Coupe or Grand Prix GTP as these appear to have the bypass valve built into them and can be had at reasonable price over there (at least ½ the price including shipping as here). Quote Link to comment Share on other sites More sharing options...
dum-bass Posted September 26, 2008 Author Share Posted September 26, 2008 The generation 1 M-90 had an external bypass valve and the gen 2 was internal. I wish I would have used a gen 2 M-90, a much cleaner look without the added bypass piping. Quote Link to comment Share on other sites More sharing options...
dum-bass Posted October 4, 2008 Author Share Posted October 4, 2008 The rebuild is finally done! I have lots of pics but first I want to say, being more of an American muscle car guy in the past, this has been without a doubt the most difficult engine rebuild I have ever done. Months of tracking down nonexisting or no longer available parts, buying supposed "RACE" parts from EBAY just to find out they are bogus, hacking it out with my machinist about clearances, deck height, and everything else, having to fabricate everything because nobody makes parts for this car anymore, or hey! spend $500. on a friggin timing chain setup? Get the F&%# outahere with that bull@#&*!! I will just make it!!! A year or more of studying up on this L-28 and supercharging. Hey, I'm black and blue over this project and run into problems at every turn with this thing! Also I have all kinds of brand new left over parts such as; pistons, rings, gaskets, intercooler, cam and other crap. Quote Link to comment Share on other sites More sharing options...
dum-bass Posted October 4, 2008 Author Share Posted October 4, 2008 And here are more pics.. Quote Link to comment Share on other sites More sharing options...
Careless Posted October 4, 2008 Share Posted October 4, 2008 I thought this was a supercharger thread, not a turbo charging thread with a huge snail. Quote Link to comment Share on other sites More sharing options...
Hotrodpez Posted October 4, 2008 Share Posted October 4, 2008 LOL that is a really cool looking snail Quote Link to comment Share on other sites More sharing options...
dum-bass Posted October 4, 2008 Author Share Posted October 4, 2008 If you are going to drink, you must drink fast around here. Quote Link to comment Share on other sites More sharing options...
SHO-Z Posted October 4, 2008 Share Posted October 4, 2008 Got my Corky Bell Book and was disappointed on no blow through carb info and not enough info on distributor modifications. I guess my Z is just tooooooooooo old. The book is still well worth the price for all of the rest of the info that is in it. I was really looking for information on distributor mods; right now I am planning on running a stock 280zx distributor only running the centripetal advance and removing the vacuum advance. Quote Link to comment Share on other sites More sharing options...
Careless Posted October 5, 2008 Share Posted October 5, 2008 If you are going to drink, you must drink fast around here. you know the saying when working 'round the house or the cars.... "tighten one, drink one, tap one, drink one, grease one, drink one..." and so on looks like it's taking a while if the snail got to the first drink. Quote Link to comment Share on other sites More sharing options...
dum-bass Posted October 6, 2008 Author Share Posted October 6, 2008 That is a good one LOL! I have never heard that one but I will take it under advisement! you know the saying when working 'round the house or the cars.... "tighten one, drink one, tap one, drink one, grease one, drink one..." and so on looks like it's taking a while if the snail got to the first drink. Quote Link to comment Share on other sites More sharing options...
Challenger Posted October 6, 2008 Share Posted October 6, 2008 Motor looks great! Cool project! Quote Link to comment Share on other sites More sharing options...
dum-bass Posted October 6, 2008 Author Share Posted October 6, 2008 Got my Corky Bell Book and was disappointed on no blow through carb info and not enough info on distributor modifications. I guess my Z is just tooooooooooo old. The book is still well worth the price for all of the rest of the info that is in it. I was really looking for information on distributor mods; right now I am planning on running a stock 280zx distributor only running the centripetal advance and removing the vacuum advance. Oh man, I didn't know you were goin with a carb but from what I understand, It is actually easier to dial a carb in as long as you are jetted to take on more fuel. I,ve seen other guys on this site use a Holly 4 bbl carb but they were draw thru systems. As far as the distributor, I think you want to retain the vaccum advance and slow down the centrifical advance curve while also cutting back on the base timing as necessary to stay out of detonation. There is alot of info on this out there... Quote Link to comment Share on other sites More sharing options...
yellowoctupus Posted October 6, 2008 Share Posted October 6, 2008 Considering the draw-thru idea, you can actually help keep your rotors cooler and increase the sealing of rotors at the rotor case [bell, Forced Induction Performance Tuning ]. (And it's been done since the beginning of time just about (1924).) Quote Link to comment Share on other sites More sharing options...
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