My 16v build, continued

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Re: My 16v build, continued

Post by vwpro » Wed Jan 11, 2017 8:59 am

panic-mechanic wrote:I never had luck with solid centre clutch plates. Always tore the centre section out.
True, if not dual or trip clutch pack these single ones don't last
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Re: My 16v build, continued

Post by ob wan » Wed Jan 18, 2017 5:54 pm

PapaJo wrote:
ob wan wrote:got it 2nd hand from a buddy, had it repacked in vanderhoff road for R400, no more clutch slipping, even at 1.3 bar...
Smoking the wheels big time, for sure!!
Great stuff!!

Did you fit this to a standard 16V pressure plate?
yep stock std pressure plate
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Re: My 16v build, continued

Post by ob wan » Sat Jan 28, 2017 1:17 pm

guys and gals, I have a problem....

my wastegate setup is as follows,
from the scroll, a pipe to the bottom of the wastegate
t-piece in the same boost line going to the top half of the wastegate
boost tap shut completely
only boosting 1.3bar
when I open the tap to bleed it off it boosts less

is this an indication that my turbo only boosts 1.3...MAX?

will it help if I swop the pipes around and let the pipe from the scroll go to the top and the boost tap to the bottom?
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Re: My 16v build, continued

Post by THANAS » Sat Jan 28, 2017 2:01 pm

Easy test, block off the pipe from the scroll and let the wastegate only get atmospheric pressure. The downside is that if you do boost more you may blow your motor before you can tap off.
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Re: My 16v build, continued

Post by PapaJo » Sat Jan 28, 2017 3:21 pm

PapaJo wrote:Let me understand this now, this picture is your boost controller.
ob wan wrote:Image
And then you want to connect it in a similar way as this drawing I posted before, where you would substitute the solenoid in the picture below with the thingy in your picture. You can try that, not sure if it will work though and the small opening from your adjustment will cause a differential pressure for a short while and the equalize the pressure on both sides of the diaphragm. You will then not vent any pressure off from the top port of the waste gate.

Image

Alternatively leave the top port open and substitute the thingy in the place of the solenoid and close it fully. That way it will work the same as a pressure from the scroll direct to the bottom port of the waste gate and operate on the spring rated pressure only to open the waste gate. then you start turning the adjustment screw out 1 turn at a time and note the boost reading on a boost gauge. The greater opening on the adjustment screw to open the port on the thingy will give lesser pressure going to the waste gate bottom port and result in higher boost before opening. Not sure what is the internal port size and needle hole size on this thingy as this could also be causing you the headache of no boost as it cannot bleed of enough pressure. in that case you may need to fit the recommended 0,75 mm restrictor in the line before the t-piece feeding the waste gate bottom port and other port to the thingy.
Few pages back on your thread, this was suggested.

If you are using a chinese turbo, you might be at max boost it can produce with your measured 1,3 bar boost with you mbc fully closed. Mrturbo advertised turbos in the T3 range a year or two back that has a maximum boost of 1 - 1,1 bar boost. Afaik going higher let the turbine wheel disintegrate. Best would be to check with the place you bought the turbo from to confirm maximum safe boost pressure and designed maximum boost pressure for the turbo you have.
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Re: My 16v build, continued

Post by PapaJo » Sat Jan 28, 2017 10:07 pm

ob wan wrote:guys and gals, I have a problem....

my wastegate setup is as follows,
from the scroll, a pipe to the bottom of the wastegate
t-piece in the same boost line going to the top half of the wastegate
boost tap shut completely
only boosting 1.3bar
when I open the tap to bleed it off it boosts less

is this an indication that my turbo only boosts 1.3...MAX?

will it help if I swop the pipes around and let the pipe from the scroll go to the top and the boost tap to the bottom?
Is the mbc before the t-piece or on the pipe going to the bottom port or above the t-piece on the pipe going to the top port?
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Re: My 16v build, continued

Post by PapaJo » Sat Jan 28, 2017 10:10 pm

Like this??

Image
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Re: My 16v build, continued

Post by ob wan » Sun Jan 29, 2017 10:12 am

PapaJo wrote:Like this??

Image

aaah, this looks about right, mine is connected as in the previous pic....

going to swop the pipes around quickly
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Re: My 16v build, continued

Post by ob wan » Sun Jan 29, 2017 10:26 am

some pics fresh out of the shower...

Image

Image

Image

Image

Image
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Re: My 16v build, continued

Post by ob wan » Sun Jan 29, 2017 10:30 am

next little project:

Image
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Re: My 16v build, continued

Post by dirty d » Sun Jan 29, 2017 1:21 pm

Nice pics bru

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Re: My 16v build, continued

Post by PapaJo » Sun Jan 29, 2017 4:32 pm

What is the outcome on the boost issue?
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Re: My 16v build, continued

Post by ob wan » Mon Jan 30, 2017 8:38 am

disconnected the tube going into the bottom, top one now has mbc, boosts 1.3bar no problems....
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Re: My 16v build, continued

Post by PapaJo » Mon Jan 30, 2017 2:06 pm

ob wan wrote:disconnected the tube going into the bottom, top one now has mbc, boosts 1.3bar no problems....
Mbc should go to botton port and top port vented. Your turbo is now maxed out at 1,3bar.

Is your waste push open from top port or bottom port??

If it is push open from bottom port, you have no mbc control and uses the maximum boost that the turbo can boost as you are connected at the top port to keep waste gate closed.

Please clarify whether top or bottom port is opening waste gate.
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Re: My 16v build, continued

Post by ob wan » Tue Jan 31, 2017 11:42 am

i presume it pushes open from the bottom, everything is now disconnected so it's just the spring that keeps the valve closed, I can hear it push exhaust gases out from the port so the wastegate still performs as it should, just without boost assistance...

and I'm loving it!!!!
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Re: My 16v build, continued

Post by Unobeat » Tue Jan 31, 2017 12:18 pm

Looks very neat and clean.
Nice pics.
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Re: My 16v build, continued

Post by ob wan » Thu Feb 02, 2017 10:19 am

thank you
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Re: My 16v build, continued

Post by ob wan » Sat Feb 04, 2017 10:00 am

anyone here running a lsd?
if so what benefits are to be had and what are the down sides? apart from the obvious traction benefit...
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Re: My 16v build, continued

Post by PapaJo » Sun Feb 05, 2017 10:11 pm

ob wan wrote:anyone here running a lsd?
if so what benefits are to be had and what are the down sides? apart from the obvious traction benefit...
Better traction as mentioned.

Downside:
pricey mod, but worthwhile if you want to race the whole time.
diff holds and then you start breaking other parts like gearbox gears or side shafts. All depending on the amount of abuse you do to it.
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Re: My 16v build, continued

Post by Robz » Mon Feb 06, 2017 7:22 am

I may be wrong, but I feel that the benefit is not worth the price. DANG it's crazy expensive.
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Re: My 16v build, continued

Post by ob wan » Mon Feb 06, 2017 12:43 pm

Robz wrote:I may be wrong, but I feel that the benefit is not worth the price. DANG it's crazy expensive.
agree, :crazy:
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Re: My 16v build, continued

Post by PapaJo » Mon Feb 06, 2017 2:01 pm

ob wan wrote:
Robz wrote:I may be wrong, but I feel that the benefit is not worth the price. DANG it's crazy expensive.
agree, :crazy:
Rather spend that money and get yourself a spare box, if this is you daily.
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Re: My 16v build, continued

Post by ob wan » Tue Feb 07, 2017 9:51 am

think that will be better, coz mine has been behaving very nice since I replaced the shaft, touch wood...
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Re: My 16v build, continued

Post by DotDubb » Tue Feb 07, 2017 10:40 am

Why dont you maybe speak to Oom Poy(0823318848), Sarel from 8v Performance's dad.
He is a gearbox guru. He can fit better diff bolts, and do custom ratios. My Poy gearbox I bought from him, spins both wheels off the line.
The diff bolts are really the weak point.
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Re: RE: Re: My 16v build, continued

Post by missioner » Tue Feb 07, 2017 5:46 pm

DotDubb wrote:Why dont you maybe speak to Oom Poy(0823318848), Sarel from 8v Performance's dad.
He is a gearbox guru. He can fit better diff bolts, and do custom ratios. My Poy gearbox I bought from him, spins both wheels off the line.
The diff bolts are really the weak point.
Bolts are not the weak point. The crown wheel is riveted onto the diff housing and those shear with high torque.
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