Differential oil temperature
#52
Water Foul
The main features of a catless midpipe are the fact that it won't clog and that it isn't pushing hot backpressure against the engine. Or at least IMHO. The only reason I bought mine is for its potential to add some long-term reliability to the system.
#54
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
I'm not sure what it will do for EGT. Lower at speed due to less backpressure? Less thermal mass so it will change quicker, and heat up more when you get on the throttle?
EDIT: but what does this have to do with diff temps? :-P
Last edited by blu3dragon; 06-16-2015 at 10:46 AM.
#58
Registered
iTrader: (2)
No I didn't go with the aftermarket rear cover. I think the S2 rear cover plus a diff cooler should be more than sufficient. My diff has been holding up ok with no cooler but it does get SUPER hot an recently started to leak quite a bit. Plus I might be doing some longer races next year. No sure if the transmission needs cooling yet...
#62
Modulated Moderator
iTrader: (3)
The tranny didn't tend to get much over 280 degrees.....the Diff on the other hand was usually over mid 300's. I remember talking to some of the GrandAm racers when they were running the cars in ST...and they said the same thing..tranny was OK...but the Diffs got super hot
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
#63
Modulated Moderator
iTrader: (3)
If you're doing a cooler, then why bother with an S2 cover as well? I thought the only supposed benefit was a slight improvement in cooling, but the external cooler takes care of that, so there's really little to no benefit for the added cost, as far as I can see anyway.
You have to modify the cover to do it properly...so if you need to get another one anyway...might as well get the S2 one
![Wink](https://www.rx8club.com/images/smilies/wink.gif)
#67
on average 30F reduction which is not much (less than 2%), however that can be viewed differently if you made 10 more HP and still been able to operate at the slightly reduced EGTs
what about coolant temps, and timing for those two scenarios?
can you detail the differences with your car set up and the track conditions between the 2 scenarios?
were you running the same tune?
what about coolant temps, and timing for those two scenarios?
can you detail the differences with your car set up and the track conditions between the 2 scenarios?
were you running the same tune?
Last edited by Nadrealista; 06-22-2015 at 08:56 AM.
#69
Nice charts. They are close enough to say it is the same. The max temps are identical. The average temp diff of <2% might also be explained by the longer period of idle at the start of the BHR midpipe run.
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