Starting the Turbo Build

[needle332rur]

I am starting a custom turbo project on my 95 BM 318ti. I was blessed with a m42 with stronger internals.

Here's the plan

This summer
-turbo placement and manifold building (have a spare stock manifold to work with)
http://i5.photobucket.com/albums/y152/needle332rur/103_0357.jpg

-dedcide which turbo is in better shape and mount it.
http://i5.photobucket.com/albums/y152/needle332rur/103_0355.jpg

-Run oil lines and tap drain line.
-link the rear exhaust into the turbo (already have a flex pipe i put in my custom cat back)
-plumb in RRFPR (rising rate fuel pressure reg)
-mount a front mount intercooler (hopfully behind the kidney grills)
-plumb it all in.
-use a BOV from friends MR2 turbo (easily can hold the boost i'll be running.
-Plumb in a in car boost controller 5 psi normal and max 8 psi
-boost guage and oil pressure guage install

hoping for about 180-190hp at the wheels 200-210hp crank under 8 psi

winter
-cars coming off the road
-new clutch
-thick metal head gasket from www.VACmotorsports.com
-pcIII injector controler
-30 lbs injectors
-will up the max boost to about 10 or 12 psi

I know i wish i had seen someone do this and post pics about it, so i'm going to update the post through the project.

-Nate-

[m44ic]

I am starting a custom turbo project on my 95 BM 318ti. I was blessed with a m42 with stronger internals.

Here's the plan

This summer
-turbo placement and manifold building (have a spare stock manifold to work with)
http://i5.photobucket.com/albums/y152/needle332rur/103_0357.jpg

-dedcide which turbo is in better shape and mount it.
http://i5.photobucket.com/albums/y152/needle332rur/103_0355.jpg

-Run oil lines and tap drain line.
-link the rear exhaust into the turbo (already have a flex pipe i put in my custom cat back)
-plumb in RRFPR (rising rate fuel pressure reg)
-mount a front mount intercooler (hopfully behind the kidney grills)
-plumb it all in.
-use a BOV from friends MR2 turbo (easily can hold the boost i'll be running.
-Plumb in a in car boost controller 5 psi normal and max 8 psi
-boost guage and oil pressure guage install

hoping for about 180-190hp at the wheels 200-210hp crank under 8 psi

winter
-cars coming off the road
-new clutch
-thick metal head gasket from www.VACmotorsports.com
-pcIII injector controler
-30 lbs injectors
-will up the max boost to about 10 or 12 psi

I know i wish i had seen someone do this and post pics about it, so i'm going to update the post through the project.

-Nate-

sweet, what are the turbo's ariginally off of and what size are they? For which ever you choose to go with I would definitelly recommend a rebuild of the turbo.

[DustenT]

Good luck with your turbo build. I had an EG Vtec Civic about 4 years ago and I did the same thing. It was a really good experience and a lot of fun.

Recommendations:

Front-mount intercooler: If you don't have one, look for one out of a Mitsu Starion or Plymouth Conquest. They are the perfect shape for this kind of project. Let me know if you need intercooler or charge piping couplers, I have a couple feet of 3" left over.

Look to the Honda forums for help with this. There are an ass-load of people driving around in junkyard-turboed Civics. Try this site:

http://www.gamesbbs.com/~turbosi/twinturbo.html

Good luck!

[m44ic]

just curious but where are you planning on mounting the turbo? and Im not sure what your planning but turbos dont like flex pipe, you can order mandral bent pieces off the internet, or do what my buddy is doin with his custom S/C setup go behind your local muffler shop and take the scraps they throw away. He found all the piping needed for his charge pipe in a dumpster.

[needle332rur]

sweet, what are the turbo's ariginally off of and what size are they? For which ever you choose to go with I would definitelly recommend a rebuild of the turbo.

One is a old volvo t3 (it's has been rebuilt) but has good amount of use.

Other is a t25 from a friends molselman kit for a six cly e30. Has about 4,000 total miles on it but has slight damage on the intake turbine. So i would want to replace that turbine.

[needle332rur]

just curious but where are you planning on mounting the turbo? and Im not sure what your planning but turbos dont like flex pipe, you can order mandral bent pieces off the internet, or do what my buddy is doin with his custom S/C setup go behind your local muffler shop and take the scraps they throw away. He found all the piping needed for his charge pipe in a dumpster.

Turbos need a section of flex pipe (on the exhaust) because of the heat and engine movement. It will go manifold to turbo to cat to flex pipe to rest of the exhaust. If you don't have a flex pipe between the turbo and the rest of the exhaust the exhaust manifold will crack.

Yes i am doing mandral bend everywhere intake plumbing and the exhaust is all manderal already.

O yea can't decide to mount the turbo up or down. it will have to be were the molselman kit puts it or in front of the motor. im thinking the first one because of making the down pipe will be easier. but then it would be easier to work on, having the turbo high.

[BMWDRIFTER]

Mount It Too High And You Will Bake The Paint On The Hood

[DustenT]

Mount It Too High And You Will Bake The Paint On The Hood


Wrap the turbo and put some Xtreme Dynamat Hood liner in and you will be fine.

[m44ic]

Mount It Too High And You Will Bake The Paint On The Hood

you can also get it ceramic coated also people said it also helps build boost faster for some reason

[m44ic]

Turbos need a section of flex pipe (on the exhaust) because of the heat and engine movement. It will go manifold to turbo to cat to flex pipe to rest of the exhaust. If you don't have a flex pipe between the turbo and the rest of the exhaust the exhaust manifold will crack.

Yes i am doing mandral bend everywhere intake plumbing and the exhaust is all manderal already.

O yea can't decide to mount the turbo up or down. it will have to be were the molselman kit puts it or in front of the motor. im thinking the first one because of making the down pipe will be easier. but then it would be easier to work on, having the turbo high.

ooh, my bad I though you were talkin about the stuff thats like wire loom accept for exhuast, I understand know.

[pdxmotorhead]

The higher above the oil level the turbo will fit the better.
Make sure the drain has as few kinks as possible and use 1"
drain hose. Under hard driving the turbo will foam the oil up
to 4X its normal volume and cause a temporary blockage that
will back too much oil in the bearings and cause premature
failure of the seals.
Also make sure the oil drain does not enter block too low so that oil doesn't
push back up the pipe from hard cornering.

Dave

[GDB]

The RRFPR may work for the time being, but I'd suggest getting a proper tune, especially since you are OBD1 (which makes it alot easier).

And as far as insulating the turbo, I'd go with a turbo blanket instead of the dynamat. Dynamat will not hold up to the temps that a turbo will see.

[DustenT]

The RRFPR may work for the time being, but I'd suggest getting a proper tune, especially since you are OBD1 (which makes it alot easier).

And as far as insulating the turbo, I'd go with a turbo blanket instead of the dynamat. Dynamat will not hold up to the temps that a turbo will see.

Right.....I wouldn't recommend wrapping your turbo with Dynamat. But Dynamat does make a hood liner that reflects heat, so you don't bake your paint. Like I said wrap your turbo with insulating wrap and use the Dynamat for your hood liner just to be safe.

[needle332rur]

Friend gave me the diverter valve. So this save money. I really have not spent that much but im sure that will start to change real soon.

I am changing my some of my seals in the tranny soon. At the same time I will be changing the clutch and the oil soaked stock tranny mounts and a few other parts while I have it on the lift. I'm also going to figure out the mounting location on the turbo that same day on the lift. It's going to be a busy day!

I'll make sure to bring the camera and get some good pics of mounting locations.

Here is the diverter valve....
http://photobucket.com/albums/y152/needle332rur/my%20BM/?
http://i5.photobucket.com/albums/y152/needle332rur/my%20BM/103_0364.jpg

[needle332rur]

look its done!!

http://i5.photobucket.com/albums/y152/needle332rur/my%20BM/103_0367.jpg

guess it's not that funny huh...

[cali-ti]

we feel your pain ... man that sux :(

[m44ic]

dude what happened?

[needle332rur]

Well if it's not a total loss (control arm is bent but frame is still stright). i'm doing most the repairs myself and using the extra money to do a 94 m50 swap. After the swap i'm doing m3 cams and gona try to get 200 whp out of the m50.

I'll keep you posted on the progress.

[m44ic]

Well if it's not a total loss (control arm is bent but frame is still stright). i'm doing most the repairs myself and using the extra money to do a 94 m50 swap. After the swap i'm doing m3 cams and gona try to get 200 whp out of the m50.

I'll keep you posted on the progress.

darnit I wanted to see a wicked turbo build, oh well have fun with all that torque

[needle332rur]

darnit I wanted to see a wicked turbo build, oh well have fun with all that torque

haha, i will

If you guys need stuff or info on turbocharging m42's i got a bit of stuff laying around.

two turbos
toyota mr2 diverter valve (holds 14 psi no prob)
m42 throttle body
m42/44 exhaust manifold (great for parts for a turbo mani)
and more

[Dredder]

check out homemadeturbo.com probably pick up a few pointer from there.