M42 turbo fact thread

[MF DOOM]

they would love each other. if i dont go the borgwarner route ill go gtx3071.

drunk post tho

[PFCRayB]

Well im out of the turbo m42 for now...long story.....so im selling my mani, intercooler, and the intercooler piping for 150. Ill have pics monday or tuesday

[Damon in STL]

Well im out of the turbo m42 for now...long story.....so im selling my mani, intercooler, and the intercooler piping for 150. Ill have pics monday or tuesday

I'm interested.....and will buy after I see what is included in pics.

Damon in STL

[willworkfore30s]

I'm interested as well

[MF DOOM]

What manifold is it?

they would love each other. if i dont go the borgwarner route ill go gtx3071.

drunk post tho

Yeah.. Ak, stock motor? how much boost?

[MF DOOM]

What rear end are you guys using? think i might trade for a 3.73. I got a 2.93 for when I planned on driving to ca but the cars kind of a slug off the line now.

[Dj Buttchug]

im running a 3.73 now. its great but a little short imo. Waiting on my 3.46 to get here from a member. will report back with details.

2.93 is to tall. it takes to long to get into boost. Thats why I bailed mine. For the freeway tho its still nice.

[MF DOOM]

so... guess who put their clutch on backwards.


at least i found my issue..


also discovered its a 240mm clutch. thought it was a 228

[e30guydownunder]

Simple solution is always good :)

I'm swapping to a 3.73 or 3.64 (currently run a 4.27) as apparently the motor / turbo combo runs out of legs at Bathurst on the SHORT straight :) Straight at Eastern Creek is pretty long too and if I can hold 4th at Wakefield will be a bit better overall.

[wazzu70]

so... guess who put their clutch on backwards.


at least i found my issue..


also discovered its a 240mm clutch. thought it was a 228

That will cause some problems! :)

[MF DOOM]

In my defense neither side was stamped "flywheel side" and thats how they shipped it to me.. But its driving now :)

[PFCRayB]

If anyone wants to see the parts I have pm me your number and ill text you the pic

[MF DOOM]

I have to ask what you want for that manifold?

[benjami]

Iv been planning on building my m42 into a turbo for some time now.

so far>

TD06sl2 with 8cm t3 v-band turbine
44mm external wastegate
1 1/4 steam pipe manifold

plans are probably 8psi as its a daily driver, still need to finish manifold for the wastegate

Thanks for the influence chris :)

[e30guydownunder]

No problem, good to see you are still going ahead with yours. I strayed.....but I'm back in a big way. Manifold looks like it has come out great! Very compact. I had to go with a different design to get the turbo to fit.







I've just finished prepping the block. Was previous drilled and tapped to M12 studs (out of an M30) but these had been over torqued. I have drilled and tapped the block to take oversize M12 rolled threaded inserts. This is stronger again than the M12 studs. You can also see the O-Ring setup for the copper head gasket: