Quote:
Originally Posted by BlackGS  The premium fuel is probably because the lower octane causes knock and leads to hotter manifold temps. Also, I'll bet they see a lot of warranty work from people who ignore the octane recommendation. Always good to give them the reminder.
I would guess that the L67 is more at risk because of the hotter temps. It has to get pretty hot for oil to actually catch fire on the manifolds. The L36 probaby doesn't reach those temps as easily.
I would never have guessed that the spark plug holder and burning oil would be the culprit with these engine fires. I would have thought for sure it was electrical, but considering that very few modded cars go up, it makes sense since those cars would have removed that strip, and would probably not have oil leaking from the front gasket for very long. |
I have auctually seen my exhaust manifolds catch on fire. My throttle got stuck open one time
(See Thread). When I finally got it stopped, I popped the hood to see flames on my manifolds. The oil that had been leaking finally got hot enough to ignite and start burning. I quickly was able to blow it out (after it quit acting like those trick birthday candles). But yeah, the manifold were glowing red.
Any bets the cars that this happened on had a clogged or partially clogged cat?
Obvously there was oil already on my manifolds and just regular driving didn't ignite it. But they had to get red hot for it to catch fire.