Mod to turbo bracket for K27???

[wholio94112]

...in the back of my mind, i remembered seeing something about having to modify the turbo mount/bracket unit when switching from stock 3DLZ to K27...my car was devoid of the bracket - which seems a bit negligent on passed owners part - so i bit the bullet, finally, and got one through the local porsche dealer - from the german storeHaus...
...weel what-do-you-know???its NOT exactly compatible, after all...
...so, before i go on and make some cuts and marks and tacks and welds - pray fully unregrettably - i thought i would throw it out to ya'll, just in case its common knowledge and practice...
...i havent a photo, but as it sits, the bracket will mount into the motor mount holes, and the K27 turbo mating flange sits about an 1-1.5" lower than the brackets complementary mounting face...too high too lift up to - and thus far, im too lazy to go and loosen all the fasteners in the entire exhaust system...my 930 is essentially stock in the area save for the turbo, kokeln IC, and other gizmos having nothing to do where it all orients itself to the universe...
thanks for all the help, drawings, lay-outs, etc i hope are coming my way...

[Ronnie's.930]

Here is what I did with my bracket when I installed a K27 Hyflow several years ago.

First, I spent several hours bending, enlarging holes, etc. and could not get the bracket even close. So I gave that up and decided to cut the bracket in two at the area where it bends in the direction of the turbine. I then mounted both sections and glued them together with JB Weld (Brando, are you reading this?). The next day, I took the bracket off and welded the seam proper. This worked, but I had to do it a second time as my new turbo began throwing oil after about five minutes of run time, and when I got it back from a rebuild, the bracket was not even close anymore (even with some minor clocking of the turbine housing). I never figured out why!

The next time I have to do something like this, however, I will likely skip the JB step and make a cardboard template instead.

[quattrorunner]

Originally Posted by Ronnie's.930

Here is what I did with my bracket when I installed a K27 Hyflow several years ago.

First, I spent several hours bending, enlarging holes, etc. and could not get the bracket even close. So I gave that up and decided to cut the bracket in two at the area where it bends in the direction of the turbine. I then mounted both sections and glued them together with JB Weld (Brando, are you reading this?). The next day, I took the bracket off and welded the seam proper. This worked, but I had to do it a second time as my new turbo began throwing oil after about five minutes of run time, and when I got it back from a rebuild, the bracket was not even close anymore (even with some minor clocking of the turbine housing). I never figured out why!

The next time I have to do something like this, however, I will likely skip the JB step and make a cardboard template instead.

Holy crap I thought you were joking!! That's funny.

As a consequence I also had this delema. The way I dealt with it was to cut the bracket and mount everything as it should be supporting the amount the bracket should hold the weight. Then, I bent it where so it touched, reset everything, checked fit and when it was right, I welded it together. There is room to do this welding behind the bracket so the weld is behind everything.
When I changed headers it was all crap again. I'm currently not supporting the turbo but have been trying to get it all done again once I remove the motor mount again, or whatever it is holding me up on that job.

[oilonly]

I elongated the holes higher to the left. Plus I cut the post that was welded on and used it as intended, it made installation easier seperated.

[Ronnie's.930]

^ Right, I forgot about that - I cut the welded-on spacer off as well and used a separate one that I did not weld.

[billjam]

This old thread might help.

Some time after I did the mods shown in that thread, I modified the bracket to include the top mount as I felt that the whole assembly really needed that extra support.
I cut, massaged, extended and welded the area around the top hole so I could move the hole to the left about 15mm.

[wholio94112]

thanks to all ya'll...the bracket has been cut, given a good clean debarring, and the two pcs reinstalled...in the morning, i'll get it tacked as one, then run a quick bead...probably won't even take it off, for fear of heat causing the slightest deformation...strong steel, and i'd like to keep it straight...good point on that dastardly spacer on top left...if i was just a bit more inquisitive and thorough, i'd have trimmed that thing - and it may have fit!!!as it is, i may give the turbo a 1-2mm lift while i tack so it truly serves a supportive - and not just anti-sag - purpose...
...thanks again...

[356911930]

I heard that you can use a 964 turbo bracket un-modified. Is this true?

[RarlyL8]

Unfortunately the 965 bracket will not retro-fit a K27 to a 930. The Porsche part number for the 930 and 965 brackets is the same. The part number for the 930 special wished K27-7006 is different and may fit the K27-7200 if you can find one.
I just cut/weld or slot the original. I thought about manufacturing conversion brackets but I don't think folks would pay the cost. Those bends are more complex than they appear.

[9Thirty]

Like this?

[Ken911]

i did the cut and reweld thing. then a few years later with the next set of headers did it all over again.

[Tippy]

My Carrera 3.2 has been turbocharged for many years and never had a turbo brace. No cracks from the headers to date, but, I so want to do this. There's a lot of weight hanging out there unsupported.

[slyguy]

Ive run no bracket on headers for many miles with no issue. The weight savings is very noticeable especially in hard cornering

[WERK I]

Originally Posted by slyguy

Ive run no bracket on headers for many miles with no issue. The weight savings is very noticeable especially in hard cornering

Are you saying a weight savings from not mounting the turbocharger mount bracket is noticeable in cornering prowess or are you talking about other weight savings?

[Ronnie's.930]

Originally Posted by slyguy

Ive run no bracket on headers for many miles with no issue. The weight savings is very noticeable especially in hard cornering

Wadayamean? The bracket weighs under two pounds (if I remember correctly) . . .

[RarlyL8]

Not having a bracket is a time bomb. Every time you hit a bump that 20 pound lump at the very rear or your car is trying to tear the exhaust studs out of your engine. The header or J-pipe WILL crack, it's just a matter of time. At the very least you need a strong muffler bracket if not using a turbo bracket.

[proffighter]

Originally Posted by RarlyL8

Not having a bracket is a time bomb. Every time you hit a bump that 20 pound lump at the very rear or your car is trying to tear the exhaust studs out of your engine. The header or J-pipe WILL crack, it's just a matter of time. At the very least you need a strong muffler bracket if not using a turbo bracket.

Wise words!

I made my own bracket due the fitting issue:

[nocarrier]

That is a very nice bracket Roland!

Excellent work as always!

[quattrorunner]

Originally Posted by nocarrier

That is a very nice bracket Roland!

Excellent work as always!

Yeah that's some enginearing.

[JFairman]

Yeah, Roland's bracket is probably the nicest one on the planet. Very nice.

I remember seeing a picture of one Turbokraft made and put on a single turbo 930. It was a simple steel bracket that wasn't sandwiched between the turbo and muffler flange. Instead it was more of a bent thick steel strap that went from one of the 4 studs between the nut and muffler flange and then up to one of the motor mount studs or bolts above it. It might be relatively easy to make one that would work.

It seems like one of those made of thick enough good steel and a strong muffler mount like the one B&B makes for their mufflers or something similar would be enough to do the job. The origonal one being bigger does look stronger though.
You could email Chris at Turbokraft and see how his mount(s) if I'm remembering it correctly have held up over time.