Turbo Pro engine life

[Bacon]

I am having bad thoughts of maybe trying a turboed Pro. One of the main reasons I have avoided the poo is the lack of engine reliability. I have heard reports from some that the turboed Pros actually have better piston life than stockers. Seems counter to what you would think, but the explanation is that with the turbo, there is more fuel being put into the motor thus cooling the pistons better than a stocker. What have some of you found? It is a mod so maybe just change pistons once a year and ride it. I hate when I get dumb ideas in my head. Lol.

 

[jeepin270]

I am pretty sure that cfi4's lasted a lot longer boosted than stock. Dont know about the pro's but u would think it would be the same. Does anyone know why these motors last longer under boost then stock?

 

[LoudHandle]

From the threads I've read the common thought seems to be forced exhaust side cooling. If you look at the difference between the '93 and '94 Storm cylinder it gives you a clue. The '94 had a huge water jacket around the exhaust port and ran so much more consistent than the '93. Of course now the exhaust valve takes up all that area so we have no good way to cool it. With the turbo you are forcing a lot more air past that hot spot so you are carrying the heat away in the process, the little bit of extra fuel helps the rest of the internals but it should be burnt by the time it gets to the exhaust port.

The theory is the hot spot causes the cylinder to go out of round. Leading to scoring, catching rings, etc.

 

[TRS]

I truly believe, the boost helps stabilize the piston in the bore also. With auxiliary injectors, we also added to the cooling effect through the cases.
Time will tell what effect the auxiliaries have had "pre BullyDog" on the Pro. With the onset of controlling larger injectors in the stock location, we will loose the fuel that passed through the cases.

 

[snowpilot]

You wouldn't....

 

[Bacon]

You wouldn't....

I've done dumber things.

 

[snowpilot]

Yes you have!

 

[I.P.Yellow]

Wow, Bacon I need to feel your forehead. Next thing you'll want a turbo XM. Happy New Year?

 

[philsummers21]

2500 on first motor. Turbod from day 1. 200 so far on indy Dans long rod. Turbod from day 1.

 

[knifedge]

--At least swap out the cheapo OEM pistons and rings no matter if you turbo or not -- applies to every Pro whether 0 miles or 1000 -- also turn up oil pump to prevent oil starvation from factory setting...

 

[St0rm77]

had 1600 miles on the 09 assault (CFI-4) with PCV installed. tore her down over the next summer, and found minor scoring of the cylinders, but nothing rediculously bad.
installed the MTNTK fix kit, and added a BD turbo @ 8lbs for the last 4-500 miles.
checked out the pistons and cylinders this past summer, and all looks very good, so boost (so far) is doing good with the motor. but there probably is something to be said about the extra fuel, either from the PCV, or the BD box that is helping out the longevity a bit.

-B

 

[allblowdup]

First the Pro engine is completely different in the reliability department that the Dragon motor. Very little issues with the Pro engine. Yes there have been a few but not anymore than any other manufacturers engines. The 2011 had some week cylinders but are actually few and far between. Boost tends to be easy on cranks but can be hard on pistons and rings at higher levels. So running 14 lbs you may only get 5000 miles instead of 6000 in a perfect world.

 

[hobbes]

Dude... hahahahaha you got worse sled ADD than I do, and that's sayin something! 1300 miles on mine, all boosted, everything looked brand new inside when the new owner took it down for Indy's long rod update... I think Dan even mic'd everything and said everything was in perfect order.