Just curious. If the VIII's are running that rich on the top end, will that eventually hurt the engine, specifically piston wall lubrication (or lack there of due to gas dilution???). I've heard this concept thrown around over the years, but never heard a good answer?

 

don't know about 'gas dilution' but I could only imagine running rich would prolong your motor internals by running cooler.

 

wont hurt. its the safetest way to run. just change your oil regularly, but i dont even have to say that cuz i know everybody is gonna change their oil every 2000 miles anyways

 

I think running rich long term would have a deleterious effect on the catalytic converter.

 

it's fine, who needs cats anyway?

disco

 

It's safer to run rich than to run stoich/lean for extended periods of time. The biggest advantage is that the air/fuel charge stays cooler due to the extra fuel, and is much less likely to detonate. Leaning your car will yield more power but at the cost of durability.

 

Isn't this a concern without a problem? How many drivers run around at 4,000 or 5,000 or 6,000 rpm? I'll bet during the life of your engine, the actual number of hours above 3,000 rpm is very small.

Speedlimit ..........

 

haha.. not me..



I will bring the car up to 7k every chance that I have....

 

With my GSX, I purposely run rich to avoid unneccessary damage. I use the old fashioned VPC... With 720 injectors.. 133,000 miles on the stock motor, without any problems... All my DSM buddies have either blown up, or had to rebuild their engines for one reason or another.. But it's usually because of detonation from running too lean....