01-09-2006, 11:23 PM
Ok, so you all know I've got my DSM right over there. The DSM has got a 4G63 (2.0 liters) which had a larger cousin, the 4G64, at 2.4 liters. It just so happens that a 4G64 crankshaft, with 12mm more stroke, will fit nicely inside a 4G63. This will increase the stroke to 100mm (from 88) and increase displacement from
1997cc
to
2270cc (assuming one were to keep the bore stock. The stock rods could be used, along with stock block and head, with minimal clearancing needing to be done on the block itself. (Nothing, for instance, I dont' feel confident doing myself.)
Now it just so happens that I have found a known, good, 4G64 crank for 125 dollars. It's a good (not great, but good) price for an increasingly rare part. The plan, basically, would be to buy the crank, and, over time, buy a parts block to, over time, rebuild a block utilizing this crank, then having a fresh block to throw into the car, eventually. The car is in good shape, no rust at all, and, well, I like it alot. I think I'll keep it.
So! The question here is whether I should go ahead (next paycheck) and buy this crank with the idea that, over time, I'll build a 2.3 stroker.
Benefits of a stroker:
Detractions:
Now, keep in mind (Julie) that this is not a discussion of whether or not Rex should start the build of a 2.3 stroker motor to throw in his not-even-sorted-out-yet DSM. Such discussion is a descent into madness, and is beyond the scope of the question, which is: Should Rex spend 125 dollars of his own money that he's saved that will not make us go hungry to buy this crank and start (over time) rebuilding a block with this stroker motor in mind. It also isn't (RJ) a place to say "ADD BOOST!" because really, that goes without saying, now doesn't it. For those "ADD BOOST!" people, remember that a bigger motor spins a bigger turbo more better.
1997cc
to
2270cc (assuming one were to keep the bore stock. The stock rods could be used, along with stock block and head, with minimal clearancing needing to be done on the block itself. (Nothing, for instance, I dont' feel confident doing myself.)
Now it just so happens that I have found a known, good, 4G64 crank for 125 dollars. It's a good (not great, but good) price for an increasingly rare part. The plan, basically, would be to buy the crank, and, over time, buy a parts block to, over time, rebuild a block utilizing this crank, then having a fresh block to throw into the car, eventually. The car is in good shape, no rust at all, and, well, I like it alot. I think I'll keep it.
So! The question here is whether I should go ahead (next paycheck) and buy this crank with the idea that, over time, I'll build a 2.3 stroker.
Benefits of a stroker:
- More displacement. More cubes equals more horsepower.
- More low end torque. Additional leverage on the crank is a bit more efficient, on a physics level.
- More air flow (from the cubes) means a bigger turbo with less lag.
Detractions:
- More expense, both through the crank and the custom (well, aftermarket) pistons.
- Increased pressure on main bearings, resulting in increased wear. (Although, what this really means is it won't last 200,000 miles.)
- Lower redline.
Now, keep in mind (Julie) that this is not a discussion of whether or not Rex should start the build of a 2.3 stroker motor to throw in his not-even-sorted-out-yet DSM. Such discussion is a descent into madness, and is beyond the scope of the question, which is: Should Rex spend 125 dollars of his own money that he's saved that will not make us go hungry to buy this crank and start (over time) rebuilding a block with this stroker motor in mind. It also isn't (RJ) a place to say "ADD BOOST!" because really, that goes without saying, now doesn't it. For those "ADD BOOST!" people, remember that a bigger motor spins a bigger turbo more better.
1987 Oldsmobile Cutlass 442