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Originally Posted by thermobox
We won't know until engines start popping. I was thinking about this today also and I rationalized that it was ok by looking at other cars at market.
The Hyundai/Kia's are using Di and turbos. Why can't we?
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Quote:
Originally Posted by Neuro
I've owned and driven work trucks all my life .. this is the first sport vehicle I have ever purchased. So im in the "learning stage".
So far the scion FR-s is a blast I love it. But I would like some more power in early acceleration .. Nothing too fantastic just a small boost .. Id like to see something like a 30-50 horsepower increase...
Would something so low in boost even be considered as a possible threat to reliability for a 2.0L with the compression the FA20 has?
the more important question is.. will any kits that cater to such conservative goals present themselves and make it to the market? Or is everyone aiming for 75 to 100+ horsepower increases
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well there are multiple kits being tested, a couple of them see track time and have about 5000 miles on the kit at over 300whp
mind you that 50 hot laps around a track is VERY hard on an engine or 50 pulls down a 1/4 mile strip are also VERY hard on the car putting down double the factory hp
since a couple kits are now pushing 500whp and have 1000 miles put on them during testing(all testing is, it doing pull after pull and driving around town, then going to the track), im going to say 250 whp is pretty reliable and i would expect the engine to last at that power level to over 100k miles with the right maintenance , high grade oil in the engine/transmission/rear dif, and regular oil changes, 2.5k-3k miles, for me thats 5 years of reliability for others thats 10 years, and even longer the more time you spend out of boost on your normal point A to point B trips.
my last car i had a tuned and modified it to 9800 rpms(that is a LOT of stress on stock internals) ran it like that for 30k miles (i did the modifications starting around 122k miles on a 11 year old car) beat the shit out of it and had zero problems, would actually do a tear down when i was bored to check a few parts, i had zero scarring,no sludging, and almost no carbon build up in the combustion chamber, and everything stayed withing factory tolerance up until i sold the car at 152000 miles by then my car was 13 years old and saw one of the coldest winters and one of the hottest summers texas had been through during this whole process
reliability relies on manufacturing tolerances, quality of materials used, how hard you are on the car, and most importantly how well you take care of your car (more care suggested when beating the shit out of it
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but in the end i think the engine will be fin under 8psi for a long time, enjoy the boost folks!