Mod to turbo bracket for K27???
 

...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...

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?:D). 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.

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.

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

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.

http://forums.pelicanparts.com/uploa...1374893514.jpg

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...

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

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.

Like this?

http://forums.pelicanparts.com/uploa...1374945293.jpg

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

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.

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?

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

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:

http://forums.pelicanparts.com/uploa...1375031640.jpg

http://forums.pelicanparts.com/uploa...1375031652.jpg

That is a very nice bracket Roland!

Excellent work as always!

Yeah that's some enginearing.

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.

Words of wisdom, for sure. I have a strong muffler bracket, holds everything nice and tight tight under there. A few years ago I purchased a stock turbo bracket, at the time not realizing that it won't fit my K27-7600 and is only good for a stock 3LDZ. No problem, I'll just do the cut and weld thing when I get off my lazy ass. Meanwhile, all looks cool under there. If I crack my stock exhaust, guess I'll just have to buy a set of headers (I need an excuse!).

http://forums.pelicanparts.com/uploa...1375031652.jpg[/QUOTE]

That's one good looking mount.

!

I went the rough way, keep only one connection (the lowest) to the three bolts, after my 3LDZ gave up and I exchanged for a K27, cutting and then welding the original bracket.

I drove the car for about 700 miles without a bracket because it wouldnt fit after installing the K27 (everyone here told me to mount the bracket, and of course, they were right and I was just lazy!), and everything started getting less tight over time. You could feel it by putting your foot on the muffler, and pressing down. The failure component in the end was the clean air turbine intake side clamp on the turbo: It went to pieces, literally.

You cant run the car without that bracket. Period. I tried.
(And I run a 3.0 with no intercooler, so I am sure things are worse without a bracket on a 3.3 with an intercooler...!)

But it feels like there is no real solution to this overall problem, every car has a different setup after a few heat cycles - getting a stock part from Porsche doesnt work for the first time!!! :)

...damn roland, thats a sweeeet bracket...and i just forked out 150 bucks for the stock mount from the motherland, and another 3-4 hours cutting it up, fitting it to my rig, and welding it back together to serve its purpose...oh well, purpose served, weight supported, time to find the next project that will keep her off the road...went for a 75 dollar drive this morning - 91 octane was $4.40 a gallon last night...so its looking like its cheaper to modify/upgrade/maintain these cars than it is to drive them - at least out here in CA...thanks guys and gals for all the input and advice and inspiration...and thanks roland, for the buyers remorse!!!

Thanks guys. I already posted the pics a few years ago, but maybe not all of you have seen...
It's not that difficult to make this. A sheet of 0.5mm aluminum to make a dummy, can be bent by hand but will stay in form to adapt the angles and distances to the finally used 4mm stainless steel sheet;)

Thanks and sorry for that...

At least you have cheaper fuel than me!

BTW you better don't watch my rust combat thread, could be more remorse there:D

I remember you posting a picture of it before. It's a beautiful job you did on it. To have a metal fabricator around here make that would cost a small fortune... For most average people with nothing more than a bench vice, hammer, air saw, and die grinder it would be almost impossible, take a long time, and turn out ugly compared to yours if they ever finished it.

The one on my car was already resectioned and welded back together to fit the k27 7006 that was on the car when I got it.

Then when I bought and put on a K27 7200 HFS (that was a brain washed mistake) that has a stock 7200 hot side and turbine wheel I had to reshape it to fit and bolt up again.
The k27 7006 has a bigger diameter and thicker hot side than the 7200 so you have to modify the bracket when switching between them every time.
The 7006 also has a bigger diameter turbine wheel and exhaust exit hole so you have to grind the hole in the bracket about 1/8" bigger all the way around to keep from choking down a 7006 and acting like an exhaust restricter.