$$$ Engine rebuild
$$$ Engine rebuild if i were to buy an eagle rotating assembly to forge internals and drop compression, about what would it run me to have them install and i guess basically rebuild my engine? Including balancing honing and resurfacing? Is it worth it on a car that only has 106k miles? Im doing twin turbo and i know i dont absolutely have to have it to reach my goal of 700 at the crank but if it means that car will run better longer like to 300k with no problems then maybe ill look into it a little more. Oh and btw its no garage queen i drive it 200+ miles per day and plan to do so for years to come. Could it make it any more daily driveable and more reliable?
well i am putting my car in the shop today for a rebuild. all together its gonna be around $4500. but most of that is parts. he charges $1250 for r&r, which from what i understand, is taking the engine out and putting it back in. so if you bring/ship an engine to a shop, you will save that much. and around another $1000-$1500 for labor and machine work.
Check around with the sponcers. I got my forged SB from texas speed for 3,200. Stock crank, forged rods and pistons. my compression is 9:1 with the dished pistons and the 817 casted heads. I ran out of fuel @ 5,100 rpms and made 543rwhp and I should hit the 600rwhp mark next time to the dyno. The short block came ballanced, new cam bearings line honed... the hole nine yards. You my find it to be cheaper to go this way. I also liked the fact that i have my original engine/heads just in case this set up goes boom.
A forged piston is a lot harder on cylinder walls than a cast piston. I would say 40,000-50,000 miles out of an all forged short block would be all you can expect and thats if you treat it well.
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Very true. 100,000 miles is a LOT of driving. Most people will want more out of it by 20,000 and will rebuild again. (Let alone, the fact that most rebuilds lasting past that mark with over 700 horsepower is remarkable.) That can surely be done, but I know the threadstarter might be wanting more power by then. 
I completely suggest getting all the machine work and what not done. Will make a large difference for sure even though the changes seem "Small"
I completely suggest getting all the machine work and what not done. Will make a large difference for sure even though the changes seem "Small"
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Joined: Mar 2006
Posts: 471
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From: Rolesville, NC
No offense, or maybe I just dont understand all the build parameters, but at those power levels, 10,000 miles if that.
I see friends here in my area with 383 ci upper 580 some HP and low 620-630s tq, having to rebuild their engines every 16-18 hours of race time,
and other guys engines are like the energizer bunny . . . .
I see friends here in my area with 383 ci upper 580 some HP and low 620-630s tq, having to rebuild their engines every 16-18 hours of race time,
and other guys engines are like the energizer bunny . . . .
No offense, or maybe I just dont understand all the build parameters, but at those power levels, 10,000 miles if that.
I see friends here in my area with 383 ci upper 580 some HP and low 620-630s tq, having to rebuild their engines every 16-18 hours of race time,
and other guys engines are like the energizer bunny . . . .
I see friends here in my area with 383 ci upper 580 some HP and low 620-630s tq, having to rebuild their engines every 16-18 hours of race time,
and other guys engines are like the energizer bunny . . . .
Well it truly depends on the load the motor is "REALLY" going to see and what is in the "Guts" of the motor.
I have seen steel rodded BBC motors with over 900 horsepower worth of nitrous survive 75 plus hits down the track before the pistons melt away, but for a boosted application on the street, 10,000 miles could easily be done. Something at that nature should be thought of getting torn down and inspected around 20K to 30,000 miles.
Some of the machining practices, materials, and tuning/fuel options we have today can definitely make a motor last.
I can see a nicely motor only going 10,000 miles if it was road hard and put away wet.
ive never built a suoper aggressive motor like this so i didnt know what to expect. I never thought i could only expect this little mileage out of it. We'll have to see what happens i bet i can get more out of it. Most of this is highway driving and the motor under these conditions 65mph- will see little to no boost so i dont think it will be strained like you all are imagining. This is a striclty street car i have all purpose built race cars. Or well theyre being built anyway like i said this is my first real aggressive engine. My track cars are basically stock. Whenever it blows up ill go from there with my next set up. If it lasts 10k ill probably go back to stock. If it lasts 50k ill just rebuild.
