Overboosting and exhaust size...

[Gerard <gerard@poboxes.com>]

Hi!

The 200t again. I've moved down to the coast. Last week I had the
intercooler to throttle body hose "remade". This involved wrapping the
hose in a thick layer of rubber and steaming it on. The hose held
well, but seems to be blowing oil and dirt out again.

The car's digital boost readout goes all the way up to 1.7 bar and
the motor cuts-out. It will do this very easily. It seems the rubber
re-make has not held at all, even though the split is small compared
to previously.

When I bought the car they replaced the rear silencer with a piece of
junk. The put on a +- 50mm diameter pipe and box on the +- 57mm
exhaust system. The agents here (Barons) want a whopping $500 for the
rear box. The 2nd set of agents want $250 for it and my second-hand
dealer is offering it at $100. 

Could this 50mm - 57mm fitting cause enough back pressure to make the
IM pressure build up so rapidly that the car will easily cut-out?
Could the back pressure it causes also be the cause for my "Michelin
Man" hose continually splitting?

The boost builds rapidly and seems to exceed 1.66 bar which causes the
fuel pump cutout. The car pulls hard, but not much is seen on the
speedometer side.

Could simply fixing the rear silencer box (by putting in the 57mm
in place of the stupid 50mm) solve my problems with the IC-IM  hose
splitting and the boost building up too quickly??

The automatic tranny is also packing up!!!

G.
-- 
"a thousand miles from here, there is another person smiling"
1990 Turbo (200t)
name   : gerard van vught
tel    : +27-57-912 2658 (w) / 082 923 9609 (cell)
url    : http://homepages.acenet.co.za/gerard/
e-mail : gerard@poboxes.com  / han.solo@galaxycorp.com
         gerard@acenet.co.za / van_vught@frg.issi.co.za