mtcookson

Its actually in its high efficiency range by about 15 psi and will run through the high efficiency range up to about 21 psi. Up to 79% efficiency... its definitely one nice compressor.

http://forums.hybridz.org/showthread.php?t=117977

I just bought one a couple weeks ago and haven't had a chance to use it yet but just looking at it is awesome. I used to have a Schumacher Electronics MIG welder but it wasn't all that great. It definitely got the job done but it wasn't that pretty and such. I decided to get a new welder so that I could do some higher quality welds when fabricating stuff for my car. The cool thing about this model is the Auto-Set feature. You have your standard infinite speed and voltage settings but the Auto-Set feature allows you to set the wire size and the metal thickness then just weld away without having to worry if the settings are correct. I don't know how well it works yet (I definitely will soon) but it seems like a very awesome idea. I was thinking about getting the 175 but the 110 voltage was much more convenient for me and should be able to weld what I need. Any of you guys have one?

I guess I'm just going to have to prove it somehow...

I definitely wouldn't mind having one for my VG but they are pretty rare as I believe they're mostly found on diesel generators. You definitely got a real good deal getting a new one. Going by Holset's website info, it should support upwards of 480 hp on a gas engine, which if that map is correct would be at about 25-26 psi or so. On yours, is the turbine housing a single scroll or dual scroll?

I would use the W-series VG pistons, either the late N/A 9:1 pistons or turbo 8.3:1. Both use the floating pin and will fit onto the DE(TT) rods. All of the VG rods are forged, however the TT rods are the strongest. Piston wise, I wouldn't use any DE(TT) pistons as the combustion chamber is a good deal smaller than the VG30E(T)'s. You can get custom ones made here for a pretty good deal: http://www.atomicspeedware.com. BRC Performance is also known to make good forged pistons for a good price. I've heard of a number of Z31 guys using them. http://www.brcperformance.com.

I always hear you have to use the pressed fit pistons with pressed fit rods and floating pistons with floating rods. I do have a set of DETT rods that I'll sell. I can let go of them for $60 + shipping.

Taking contributions? Here's an interesting map I found for either the HX35 or HY35, not sure which... of all places its on Garrett's site. What's interesting is it follows what everyone says about it being a very wide map. Take a look here: http://www.turbobygarrett.com/turbobygarrett/products/turbo_kits/turbo_kit_pdfs/CompmapCummins.pdf

The description of this turbo mentions the HX40 having a weaker shaft (http://www.citydiesel.net/dodgezilla-turbo-p-30.html?cPath=22_27_50) but I've also scanned through some Dodge diesel forums and a lot of those guys are saying they're blowing up HX40's much easier than the HX35's.

These guys do it but it is pretty expensive. http://www.lpperformance.com/

Its been proven that turbo cars are quicker with lower ratio differentials... the TT diff would be better. Even better yet would be the Q45 differential or, if you go absolutely crazy, the Armada differential. It has two options of 3.36 or 2.94. The Armada differential is also an R230 but looks even beefier than the TTZ R230 (axle wise).

I recently bought an HY35 and an HX35 for around 180 each. Wanted an HX but found the awesome deal on the HY... decided to sell it and just so happened to find another awesome deal on the HX. They are out there, it just takes a bit of time to find the good deals. Granted mine will likely need a rebuild, its still in great shape and even buying the rebuild kit its cheaper than what most sell for. I'm on ebay all of the time keeping an eye out for deals on Holsets so if I see one, I'll let you know. Also, the HX35 (may HY as well, not sure) is said to be stronger than the HX40 due to it having a larger shaft than the 40. A lot of Dodge diesel guys have been blowing up HX40's much quicker than the HX35's. I know of a few companies that modify the HX35 to fit the HX40 compressor parts for even more power. Here's one of them that I know of off the top of my head: http://www.citydiesel.net/dodgezilla-turbo-p-30.html?cPath=22_27_50 On that page, in the "Technical Info" tab, there is a compressor map of that setup (and a very nice one compared to the crappy Holset maps floating around out there).

Quad cam is just another way of saying dual overhead cam. Quad cam just means four cams in all. Really... that's a better way of naming the engine imo but ehh... either way works for me.

The benefit of having coolant cooling the turbo is it prevents coking of the oil which will likely make your oil last longer and even more importantly make the turbo last longer. You also generally don't need to let the engine idle for the turbo to cool off when its water cooled compared to when its not (this goes back to the coking of the oil).

Yeah, the bolt pattern is the same between the VG30E(T) and VG30DE(TT).

I've actually thought about this myself. The VG30ET is definitely an awesome engine, and in my opinion, is probably more reliable than the VG30DE(TT). Its also a bit lighter as well. Tons of low end torque, able to handle some good power, much smaller package... you can't really go wrong. You might look into using a Z32 n/a 5-speed. It'll be stronger for one but it'll bolt right up whereas the earlier trannies probably use a different crossmember that will require some modding to put on the Z32. If you do use it that'll save you driveshaft headaches as well. Just bolt it to the VG30ET, bolt the tranny to its stock location, make your motor mounts and bolt it down, then use an aftermarket one piece driveshaft. I think it would definitely be fun. If you do the swap, be sure to take a lot of pictures. I'd like to see how it looks.

You can get the manual trannies for around $250-$300 from some places. Try out http://www.car-part.com. They have salvage yards listed in Canada as well.

For the pedal/master cylinder assembly the imprint for it in the firewall is already there. If you look next to the brake master cylinder you can see the imprint where it would go. You would need a brake pedal from a manual trans car and just swap those. ECU wise that won't matter. It will still run with the manual tranny setup. If you were going from manual to auto, that's when you start getting troubles with the ecu. Really... the whole swap wouldn't be too bad if you can find a manual tranny Z at a salvage yard to just start pulling parts that you need. That would make it much easier to pull off. If it were my car... I'd do the swap because I hate auto trannies and don't mind doing that kind of work. It just depends on how much work you want to put into it, because it will take some time.

I'm thinking about sending it to a guy that has access to that stuff but my project may be starting sooner than I planned as some stuff in my Z is dieing. I may still send it to him and just suffer driving the winter beater for a while (86 Chevy Blazer)

Sorry about that, I just meant that they make stuff for Z guys. They can do totally custom driveshafts to whatever specifications you want.

They work fine for me. The fabrication looks great. Definitely keep us updated!

They say aluminum ones aren't too good for high power. If you want carbon here's one company that makes some for Z32's for a decent price. http://www.pstds.com/ They also do steel and aluminum.

Got mine:

I think around 350-400 hp off the top of my head. I've read that the compressor is a lot like a T04E 50 trim... which matches up with an L28 very, very well. I was thinking about using one on my VG30E as it matches just as good for what I want but they are rather hard to find as most applications that have them are diesel generators. Holset's website says 240 hp, which if what they say is true should be 480 hp from a gas engine. This would match the T04E 50 pretty well basing off of a compressor map.

Looks like an HX30W to me. Here's a comparison: http://www.binaryweb.com/scrapbook/050604_hx30w/