Thumper Posted March 15, 2006 Share Posted March 15, 2006 This is how I installed my holset turbo. First you will need a hy35w turbo. You can use an hx35w but you will need a spacer and it will take forever to spool. When you order/get the turbo, make sure you get the 45degree exhaust pipe and v-band clamp. The v-band clamp is $40 at dodge and the pipe is alot more. The supplies you will need are: Holset hy35w turbo (Ebay, Junkyard, etc...)$250-$450 m12 x 1.25 thread tap (Local hardware store)$10 2.75" x ?" Intercooler coupler (?= whatever size pipe you will use)$20 3" mandrel bent u-bend piping (Summit, Jegs, JcWhitney)$25 ?" mandrel bent u-bend piping (For pipe from turbo too intercooler)$25 Mig/Tig Welder (Friends, Muffler shop, Sears)$450-$3k RTV Sealant (Anywhere)$7 O2 Sensor Bung (Auto parts shop, Muffler Shop, Ebay)$6 4" Air Filter (Summit, Jegs, JcWhitney, etc...)$50-70 Stock Turbo/Manifold Gasket (Nissan)$20 Large c-clip Pliers (Tool Place)$15 2 copper washers for oil feed line (Auto Parts store)$6 Die grinder/Dremel (Tool Place)$20-100 Stock 280zx turbo Wastegate Actuator Unbolt the clamp that holds the center section to the exhaust housing. Remove the c-clip that holds the compressor housing to the center section Remove the wastegate actuator and cut off the bracket that held the actuator to the compressor housing Rethread the oil feed hole with the tap and then turn center section upside down blowing all shavings out and then run some thick oil through it to get the leftovers Port the stock wastegate hole as big as you can get. Over 300% larger. Make it so the the wastegate puck barely covers the hole and make sure the hole is even all the way back and does not taper down. If not done enough you WILL have boost creep problems and will have to take the turbo off and redo. Put new manifold gasket on and mount exhaust housing. Put the center section on the exhaust housing and lightly tighen the v-band clamp. Rotate center section untill the drain tube lines up with the bolt holes. Slide the compressor housing onto the center section and clock it at the position you want it. Mark the compressor housing and center section. Remove housing and center section from exhaust housing. Line the marks up and install the c-clip removed earlier. Reinstall the center section with the compressor housing attached. Make sure everything is lining up correctly (oil drain pipe, compressor outlet, and you have enough room for you pcv valve) Tighten the v-band clamp moderately. No need to torque it down it is deceiving on how tight it is Put a light coat of rtv sealant on oil drain tube and install the bolts. Bend stock oil feed line so that it is in the correct location and install the bolt with new copper washers. Using the 45 degree exhaust pipe and 3" mandrel bent pipe make a downpipe. You will need to have the 3" pipe expanded to fit the 3.5" exhaust pipe. But only for an 1" or 2" then it can be 3" the rest of the way. Make the intercooler pipe and install it with the coupler Make a bracket for the stock wastegate actuator either Tig welding it to the compressor housing or mounting it to the intake manifold. Make sure it is a straight angle and the actuator can extend fully. Install 4" air filter and prime the turbo with oil Enjoy the ride! This is my first how-to article so any and all input is welcomed. If you have any questions reply here so that I can answer them so that all can see. These are not my pictures but my setup is similar. Only difference is I used the stock oil feed line instead of an aftermarket braided one, I used a 3" pipe expanded to a 3.5" instead of a special 3.5" to 3" reducer, and I mounted my 280zx actuator to the intake manifold instead of getting the bracket tig welded to the compressor housing. Quote Link to comment Share on other sites More sharing options...
proxlamus© Posted March 15, 2006 Share Posted March 15, 2006 Nice work man... im finnaly pickn up a new block.. so Holset here I come Quote Link to comment Share on other sites More sharing options...
KTM-EXC Posted March 16, 2006 Share Posted March 16, 2006 Great read, I probably do it if I didn't just loose my job Quote Link to comment Share on other sites More sharing options...
Guest jonnycowboy Posted March 16, 2006 Share Posted March 16, 2006 whats your suspected HP gonna be with this "Holset" Turbo?? Jonny Quote Link to comment Share on other sites More sharing options...
GrayZee Posted March 16, 2006 Share Posted March 16, 2006 whats your suspected HP gonna be with this "Holset" Turbo?? Jonny Well in his other post he said that his car weighed in a 2670lbs with a 117mph ET. The math suggests that his power is roughly about 335rwhp. Not too shabby Quote Link to comment Share on other sites More sharing options...
GrayZee Posted March 16, 2006 Share Posted March 16, 2006 Thanks for taking my request and posting about the Holset swap. Looks to me that other than alot of minor adjustments it's not all that bad (I know alot of minor things can add up to a PITA) However it looks like the real challenge to this swap is the boring out of the wastegate, would you say that is correct? Perhaps another way to go would be to fab up a external wastegate on the stock manifold like 240hoke did.. http://forums.hybridz.org/showthread.php?t=108785 You also said to go with the Hy35w model with 45 degree exhaust port.. Can you tell me exactly what what vehicle you would find that exact setup? Quote Link to comment Share on other sites More sharing options...
Sparks280zt Posted March 16, 2006 Share Posted March 16, 2006 dodge cummins diesel trucks Quote Link to comment Share on other sites More sharing options...
GrayZee Posted March 16, 2006 Share Posted March 16, 2006 dodge cummins diesel trucks Yes I figured that, but does that mean that every dodge diesel truck uses the Hy35w with a 45 degree exhaust elbow or perhaps certain years/models use the Hx35w? and maybe don't have the exhaust elbow.. This is why I'm asking for specifics. Quote Link to comment Share on other sites More sharing options...
Thumper Posted March 16, 2006 Author Share Posted March 16, 2006 http://dodgeram.org/tech/dsl/Facts/01ISBspecs.html 01-02 Cummings turbo diesel Automatic Quote Link to comment Share on other sites More sharing options...
DemonZ Posted March 16, 2006 Share Posted March 16, 2006 stupid question: what's the advantage of the Holset vs. t3/t4? Quote Link to comment Share on other sites More sharing options...
Thumper Posted March 16, 2006 Author Share Posted March 16, 2006 Cheaper Quote Link to comment Share on other sites More sharing options...
GrayZee Posted March 16, 2006 Share Posted March 16, 2006 stupid question: what's the advantage of the Holset vs. t3/t4? I image the biggest thing is that a Holset was available on a factory application and therefore can be picked up used for alot less money than a T3/T4. Especially now that guys with Dodge diesels are doing upgrades and us Z guys can pick up the leftover scraps.. LOL Quote Link to comment Share on other sites More sharing options...
Guest JAMIE T Posted March 17, 2006 Share Posted March 17, 2006 Not only that, but they can boost to 40psi+. They are superior to "old" Garrett technology. Not particularly to "GT" stuff though. The Holsets are very advanced compared to Typical T3/T4 turbos. Quote Link to comment Share on other sites More sharing options...
DemonZ Posted March 18, 2006 Share Posted March 18, 2006 in Garrett speak, what would the HY35W be comparable to, 60-1, or TO4E?? Quote Link to comment Share on other sites More sharing options...
turbo_fb Posted March 24, 2006 Share Posted March 24, 2006 A friend of mine wants a Holset on his Volvo but I cant fand any webshops on the net that sells em. Got any good links? Holset is supposed to be a good turbo right? Quote Link to comment Share on other sites More sharing options...
KTM-EXC Posted November 20, 2006 Share Posted November 20, 2006 Sorry to bring up such an old thread, I dont think I really need to start a new one. Friend of mine may be able to get me an HY. Just wondering how this will fit in a 280zx? Dont plan on installing it this year but when my T3 dies. I apreciate the help Quote Link to comment Share on other sites More sharing options...
big-phil Posted November 22, 2006 Share Posted November 22, 2006 hmmmm, not sure about a zx but if it will go you will be soooooooooooooooooooooooo happy!! I've been running my HY for going on 3 days and MAN!! awesome........just awsome. The tires chirp when I take off in 1st, then as the HY spools up the tires start breaking loose, AGAIN! If I get it spooling in first, then take off its time to get some new tires. Quote Link to comment Share on other sites More sharing options...
nish Posted November 22, 2006 Share Posted November 22, 2006 That's music to my ears Phil. I just won a 2003 HY on ebay Monday. Keep us posted on the progress, especially how your megasquirt turns out. Quote Link to comment Share on other sites More sharing options...
alexideways Posted November 23, 2006 Share Posted November 23, 2006 You guys think it would be a good upgrade for the rb25det or am I better with my stock one? Quote Link to comment Share on other sites More sharing options...
big-phil Posted November 24, 2006 Share Posted November 24, 2006 I dont know much about that motor, but I have heard it spools kinda like a T3/T4??? but I don't know for sure. Quote Link to comment Share on other sites More sharing options...
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