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Re: Combustion vs. Coolant temperature Posted by Ari [Email]  (#2847) [Profile/Gallery]
(more from Ari) on Wed, 1 Jun 2005 10:50:09
In Reply to: Re: Combustion vs. Coolant temperature, Buz, Wed, 1 Jun 2005 10:42:43 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Running at high boost levels produces more heat, so the engine would run hotter. But unless you're flogging the engine, I doubt you're spending THAT much time in the high boost range. Why do you assume you're overboosting?
As to seeing the plugs looking dirty, they may, well, be dirty. Little bits of carbon, etc. build up over time - especially if you've been knocking. Before you start worrying about high combustion temperatures because of what you saw on the old plugs, give the new plugs a couple of weeks. The old plugs may be showing evidence from a long while back. See how the 7's look before you start searching for problems you may not have.
As to full boost, the only sure way to know is to stick a calibrated boost gauge on. But short of that, simply look at the boost gauge on a cold engine. The boost needle will be right about at the gap between white and orange. That's atmospheric pressure. Now, that changes with weather - if you're in Phoenix which is nearer sea level, that's about right. But as I remember, places like Flagstaff are much higher, so the pressure will be lower. It's not a super accurate gauge, so if the needle is right around that gap, that at least indicates the gauge is about right.
The Engine control does a very good job of controlling boost - overboost doesn't happen very often, and when it does, you'll notice the needle not dipping into the red, but PLUNGING into the red. If everything seems right, most likely, everything IS right. Simply enjoy.
posted by 192.249....
, Wed, 1 Jun 2005 10:17:02, Wed, 1 Jun 2005 10:50:09 <-- Viewing This Message, Wed, 1 Jun 2005 09:44:02, Wed, 1 Jun 2005 09:49:54
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