To build the ultimate 3.4 DOHC: Turbo DYNO NUMBERS

fieromadman · Post by **fieromadman** » Mon Aug 04, 2008 4:44 pm

Well the feedline that I had already ended up working out and I got all the adaptors that I needed at the local hardware store and the drain line and drain flange for the turbo Ijust ordered from ATP Turbo. Good to know that their there though!

fieromadman · Post by **fieromadman** » Tue Aug 19, 2008 6:36 pm

Well time for an update, next time with pictures. I haven't really got too far on this project recently. Disappointing, but it'll get done. There is just so much to this project that its taking longer than I would have ever thought to get things figured out and made. Most every component is made for it already though. Got my custom intake manifold back, got the crossover done, got the hot side of the ic piping done. Just going from there now. Here is a list, mainly for myself, of what needs to be done yet and what needs to be purchased yet. BTW, I easily have 3200 into turbo components so far. Plus the 600 for the crate engine.

Components that I still need to design/install:

Dogbone
Idler pulley (there is a cad drawing for this just needs to have the spindle turned on a lathe)
Exhaust after turbo (engine is out of the car, can't do that now)
Oil drain fitting on pan needs to be welded on
Lengthen/shorten some wires on the harness
Cold side intercooler piping (again engine needs to be in car for this)
Mount ECU
Install Walbro
Re-bend fuel lines
re-route heatercore line that used to go through t-body
Modify A/C condensor
Run intercooler coolent line
Mount IC
Mount IC pump
Mount IC resevior
Wire IC pump
Re assemble T-Body
Possibly modify decklid for intake mani

Parts I need to buy:
Header Wrap
Vaccume line (the good silicone shit)
Oil pan Gasket
Oil+Filter
Dogbone bushings
IC Switch
MISC bolts and nuts
IC Resivior canister

FieroWanaBe1 · Post by **FieroWanaBe1** » Tue Aug 19, 2008 10:07 pm

Easiest dog-bone ever.

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Aaron · Post by **Aaron** » Tue Aug 19, 2008 10:38 pm

On my 3.4 DOHC swaps, I add a mount like the one picture, plus a dogbone on the top. I highly suggest you 5 point mount the engine.

Series8217 · Post by **Series8217** » Wed Aug 20, 2008 1:43 pm

Mine is like A-rod's. Before that, I rammed my power steering pulley into the strut tower without a dog bone up top even though I had a 4th mount in front by the oil filter.

FieroWanaBe1 · Post by **FieroWanaBe1** » Wed Aug 20, 2008 4:05 pm

Thats the downfall of the rubber Dodge mounts.

fieromadman · Post by **fieromadman** » Wed Aug 20, 2008 8:32 pm

You know, I HAVE had this swap done for a LONG time... and I have beat the shit out of it for a LONG time. I'll be good with a strong dogbone mounted to the tranny side of the engine.

I do plan on mounting a fifth mount eventually but I need to get everything in the car and make sure I have room. Besides I'm pretty sure the mounting holes on the 97 engine are different, so I should wait untill I get that one installed to do it.

Aaron · Post by **Aaron** » Wed Aug 20, 2008 10:34 pm

You also have never made half of the power you might make with this new build. That's like saying the Isuzu held the Iron Duke fine, so the 3.4 DOHC should be no problem, right?

fieromadman · Post by **fieromadman** » Mon Sep 01, 2008 5:40 pm

Like I said, I'll be adding one eventually.

This project has really been comming to a grinding halt. No one has free time to help me out with fabricating things and with school starting last week and my birthday this week i haven't gotten shit done. Installed my fuel pump and pulled my hood and a/c condensor the other day. Need to modify the a/c condensor for proper flow. I dont think that the 1/4 i.d. line will supply quite enough flow for the I.C.

Then I need to run some new fuel lines. Then I need to run another 1/2 inch line up to the front instead of the 3/8 one for the a/c. Then I can finish buttoning up the fuel tank stuff and finish up plumbing the water side of the I/C.

Yeah... theres a shit ton of stuff left to do.

fieromadman · Post by **fieromadman** » Thu Sep 18, 2008 8:43 am

Well the good part about all work and no play is that it gets you money and no time to spend it. I decided with my new found funds and lack of being able to get anything fabricated that I would just order a heat exchanger instead of dicking around with modifying the A/C condensor.

Here is the heat exchanger that I ordered:
http://www.atlanticspeed.com/productcar ... 72#details (cheapest place to buy that cooler too by the way)

I also decided to stop dicking around with the clutch and ordered that stuff up. I went with these two components from clutchnet, and it should be here this week yet.

http://www.clutchnet.com/product.php?productid=21546

http://www.clutchnet.com/product.php?productid=17905

These components came out to be a little more expensive (including shipping) than a spec stage 3+ but I have lost all faith in spec components. I really just think that they use cheap hubs on thier sprung hub assemblies.

Other than that, I really havent done shit with the car. It's still been hellaciously busy for me. I have also been spending alot of time finding a daily driver that wont suck in the snow. I think I finally settled on a Eclipse GSX. Probably picking that up today.

I promise I will post pics of shit soon.

fieromadman · Post by **fieromadman** » Sat Oct 04, 2008 5:00 am

Okay well I finally got some more work done on the car. Got my clutch installed and my fuel lines the rest of the way bent. I'm sure I'm forgetting somethings, but yeah. I also finally took some pictures and posted them up on my photobucket account so here they are:

Clutchnet clutch installed:

BTW the hub on this clutch is WAY beefier than on the spec. The rivets and springs on the spec hub are fucked on mine. They rattle and are loose. Glad I'm getting rid of that. But seriously, I couldn't be any happier with the clutchnet so far.

Intercooler with bracket welded on for mounting:

The front timing cover that I made. Still needs to get polished and have the spindle for the idler pulley for the belt welded on but otherwise it's complete:

Re-bent fuel lines and ETC:

Here is the crossover with the turbo inlet flange and turbo mount. It's just tacked together right now. Still needs the wastegate tubing and flange welded on it and the backside of the turbo mount milled out to save weight and etc.

The mount bolts to the tranny BTW.

A buddy of mine setup the jig and everything to make this collecor piece. Turned out damn well IMHO.

Pics of my oil line setup:

Pan is off getting the drain welded on it right now.

My heat exchanger for the front of the car. Still needs to be mounted and whatever, but it's pretty big.

My intake manifold.

Throttle body moved to the other side. I will get pics of it on the engine as soon as I install my engine on the cradle and can take the engine off the cherry picker.

It still needs to have some of the welds ground down and filled a little and painted, but functionally, its 100%.

And my hot side intercooler tubing:

Thats about it for now. Let the shit talking begin.

Aaron · Post by **Aaron** » Sat Oct 04, 2008 11:30 am

fieromadman wrote: Let the shit talking begin.

You got it.

I really like your crossover. And the actual Y-pipe was done very nicely. The turbo mount on it looks really big and heavy, I'd drill out as much of that as I could. I'm glad you're happy thus far with the CLutchnet, I may go with one in the future if the need arises.

Also, if I were you, I'd get rid of that U/D pulley. Especially with so much extra heat the motor is making because of the turbo, the last thing you want is to spin all of that stuff slower. And trust me here, a turbo 3.4 will make enough power to make your car scary--mine is at just 8.5psi, and I'm not turning it up any more than that. So if you really need that extra 10hp, get it elseware (Run another half psi of boost).

Your heat exchanger should work really well, that thing is big!

Also, why not aluminum charge piping? You'd save a lot of weight!

fieromadman · Post by **fieromadman** » Sat Oct 04, 2008 6:20 pm

Like I said, the whole back side of the turbo mount is getting milled out. i need my wastegate tubing going through that side anyhow.

I'll get a video of the disk on my spec. The springs are all loose and the rivets are failing...

I didn't want to deal with the hassle of welding the aluminum tubing up for the intercooler tubing. I might change to it at some point in time in the future but for now stainless steel it is.

Although I like the look of the under-drive pulley, I have to agree with you on it. I'm going to see where my temps are before I change it out but I kinda am expecting to have to change it.

Wow... thats it? No comments about the intake manifold either, thats kinda suprising...

Aaron · Post by **Aaron** » Sat Oct 04, 2008 6:30 pm

Well the intake manifold is ugly as shit, but it's better than the stocker, so who am I to judge? Function before form. I can bitch your welds all day long, but the bottom line is, your manifold is more practical (Rear plugs), weighs less, and flows more than mine. Now I had reasons for choosing my stock unit, but your's will make better numbers.

I also like the UD pulleys look, and the reduced rotating mass. But the side affects just weren't worth it to me. You'll notice simple things, like turning on the headlights, or turning on the HVAC, will almost stall the motor with it. On my Z34, the biggest negative side affect was not cooling, it was the charging. But with a much higher power motor, cooling may be an issue as well.

fieromadman · Post by **fieromadman** » Tue Oct 21, 2008 8:21 am

Okay, well I got alot of work done... not so much me, but my fabricator. I did however get the oil pan back on and the engine in the car... kinda.

I think thats about as far as it is going to get this year. It's got to get out of the garage and into storage now. I'm dissapointed, but really looking forward to completing it next spring.

Here's some pics of various parts:

Crossover installed on engine...

Pics of my sweet wastegate setup that doesn't work

Mount got all cut out

Different angle

The intake fits like it was meant to be there!

Overall:

Another overall, this one you can start to see why my damn wastegate isn't going to work that way:

Hot side charge piping worked out tits!

Another shot of the wastegate problem:

Derka Derka?

All the welding and some of the fabrication was done by a local guy who works at King Motorsports Unlimited as a fabricator/tuner. Needless to say they are fucking phenominal!

Thats about it for now... I'll update when the time comes.

Shaun41178(2) · Post by **Shaun41178(2)** » Tue Oct 21, 2008 11:29 am

you can cut that wastegate tube and make it shorter or do the opposite and make it longer by bolting a pipe to it and put the wastegate in a different place

Also if you cut it short, you might be able to get a turbosmart 38mm wastegate in there. Its physically shorter then the one you have by about an inch. It might fit as is with your wastegate tube, but if not like I said cut it shorter and it might work.

Since your wastegate appears to be a cheap ebay wastegate, you can get knockoff turbosmart 38mm wastegates too for like $100 shipped or so.

Aaron · Post by **Aaron** » Tue Oct 21, 2008 12:23 pm

I wouldn't call a Synapse a cheap ebay wastgeate.

Jinxmutt · Post by **Jinxmutt** » Tue Oct 21, 2008 12:36 pm

Me either, synapse might not be as proven as tial yet, but they aren't 'cheap ebay shit'

Aaron already solved your wastegate problem. "Just turn it sideways" :la:

You don't plan on running an air filter or do you have some shortie guy that is going to fit in there?

Aaron · Post by **Aaron** » Tue Oct 21, 2008 12:40 pm

Jinxmutt wrote: Aaron already solved your wastegate problem. "Just turn it sideways" :la:

Hey, you can't say it won't work.

Shaun41178(2) · Post by **Shaun41178(2)** » Tue Oct 21, 2008 12:49 pm

I can say it won't work. It wasn't designed to work that way plain and simple.

I didnt' even read the name on the wastegate. It just looks like so many knockoff wastegates on ebay.

He can still use it. Thats why I suggested bolting another pipe to that pipe and mount the wastegate in a different spot. It would be $8 for the flange and $15 in piping to do that.