Wow, that's only 49 degrees celsius on a hot almost 27 degree celsius day.

I had in the max 65 degree celsius and in the min 36 degree celsius, but on water injection (which lowers IAT to about 7-8 degree celsius for the moment) and an additional air inlet through the fake fog light.

Now with the water pump for the aftercooler being defect I see 75 degree celsius max and 52 min w/o water injection, 39 w water injection @ 5400 rpm. So especially running in idle and w/o wind cooling it the IAT goes up like hell.

Wasn't it a 3% power loss every 10 degree fahrenheit more or so?


Will work getting better IAT numbers once the pump is ok again.


Andreas

 

this month that temps reach 30 degrees celsius ( 86 F ) during noon , in traffic and without passing 4500rpm i see 55 degrees celsius. (131 F )
the maximum IAT number that i have ever seen is 80 degrees ( 176 F ) while revving all gears up to 270km/h.

do you thing that i might have a defected water pump for the aftercooler or is just because of the 17+psi that the s/c produces?

 

If you leave the warm car just with the ignition on but the engine not running (key in second position), you will hear your water pump. Easy to check if it works. Check also inside the aftercooler how the water is circulating!

Well, my problem is fixed. The pump was running out of water, as from the triangular box that is mounted on the right front it was (is) loosing the water. So I think two things happened:

- the aftercooler lost all water, therefor high temperatures

- the pump was running dry, which it didn't like at all


On top it burnt the fuse, which we found out after installing the new one. Now I have a cool aftercooler again, but I still loose a lot of water from the triangular thing.

How did you guys do the installment on this plastic thing, we can screw enough to seal it?


Any hints how to fix it, for now I can get new water in each other day but for longer?


Andreas

 

Several layers of teflon tape and tighten them down.

 

Thanks, will try it once I got hold of it. It's hard in a foreign country to find a good car shop and tuner.


Andreas

 

I tried teflon tape too and I still had leaks on the radiator connections. I siliconed the connections screwed them in and let it sit for at least 24hrs. Not a drop of leaking so far since.

 

i was thinking of the chance for the pump to be working but not properly

i hope that i am not off topic
since my problem is what we are talking about ......... over spinning

 

Can you estimate any gains from a larger TB & ported IM?

 

also where did you find the 4'' intake tube

 

A larger throttle body with a boosted application has been shown to add a small amount of power over stock throttle body. We have seen 4 to 6 rwhp going from 62.5mm to 64mm throttle bore running low boost.
At higher boost levels the gains may be greater. That said, I went from 64mm to 70mm and didn't feel anything except a difficult to modulate pedal.