chargecooler update

yup the new (2nd hand) celica pump is in and by heck it's a big puppy

original pump


versus the Celica ST205 pump and as Tim Allen would say More Power!!



Anyhow, my intake temp thermocouple finally gave up after 3 and half years living in such a hostile environment. So I'll cut the wiring and on a connector socket and then attach a short lead thermocouple to that. Saves re-wiring from the cabin.

The short testing time I had the celica unit was much better at controlling the intake temps. Recovery time after boosting was quicker too but it really was limited testing as the thermocouple just gave up lol.

I also noticed some of the vacuum tubing has become brittle over the 12 years the car has lived so I have ordered some new blue tubing to replace it. Hopefully I have ordered enough but time will tell.

funny old world -

ok so been monitoring the air intake temps really really closely and found some weird stuff happening. Under hard boost conditions the intake temps are well down on the std air to air unit which is to be expected.

However at idle the intake temps rocket from high 20degC to very quickly over 50degC! Now a chargecooled lump should be much more stable than that so it got me thinking about the coolant pump I got cheaply. So I borrowed the recommended expensive Bosch unit and impressive though it's flowrate was the temp control at idle was no better.

The kick in the nuts is that when the cc pump is disabled at idle, the temps rise no differently that if the pump was running!!! Beats the hell of me. In an even more mind puzzling (for me) trick by raising the revs from 750rpm to 1200rpm while still in neutral and sat still, the intake temps fall back down to something reasonable. Going to do some checking on the cc coolant temps and see what they are doing cause something aint doing the job that was expected of it :-(

Under hard boost the chargecooler works almost as expected and way better than the std air to air unit. However there is something amiss and solving that will give us better results all round.

On another note, the Mongoose exhaust was fitted. It's a fair bit louder and has a drone at 3-4krpm which isn't ideal. It does sound well hard though so we'll see where it goes from here.