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Re: My slow ass DSM build up
7.6:1 ??? Don't know a lot about DSM's, but isn't that pretty low?
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Re: My slow ass DSM build up
That's pretty low, ideal for running 30psi boost on pump fuel all day.
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Re: My slow ass DSM build up
lol i thought those were magazine shots for a second. You have a pretty good camera. Yeah nice car anyways. I want a gsx so bad. I already got the honda, now i just need the second most hated import car in the world lol. Good work though.
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Re: My slow ass DSM build up
The picture of the car is done by a friend of mine who's a photography geek. The macro pictures are done on my Canon Ixus IS850 and the camera I keep in the garage, a Samsung Digimax S201.
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Re: My slow ass DSM build up
Originally Posted by baldur
That's pretty low, ideal for running 30psi boost on pump fuel all day.
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Re: My slow ass DSM build up
Originally Posted by baldur
Should make an efficient 400hp on pump gas when completed, don't think I wanna put any more strain than that on a shitty Mitsubishi drivetrain. As for the oh so overly used "shitty Mitsu drivetrain" statement, it's 90% of the time driver oriented, the other 10% is power when damage occurs. You get alot of young punks who get their hands on a DSM and think it's uber l33t to dump the clutch at 6K. Then they wonder why they are dealing with fucked up transfer cases and rear diffs. If you need further insurance, go with a baller Shep built tranny (which it says you have in your sig).
Originally Posted by QikEnuF
7.6:1 Huh Don't know a lot about DSM's, but isn't that pretty low?
He on the other hand will probably hate life under 3500rpm's :3
Originally Posted by baldur
That's pretty low, ideal for running 30psi boost on pump fuel all day.
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Re: My slow ass DSM build up
Good ----! Kinda glad to see more dsm threads on here lately, kinda helps me out with mine seeing that the only thing I ever had was utter hatred for them lol.
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Re: My slow ass DSM build up
I know you _can_ push them up to that power level on stock internals and stock compression ratio. However on pump gas you lose efficiency at high boost due to retarded timing on a high compression ratio motor. Also the stock internals will happily do up to 500hp, for a limited amount of time until the rods snap and send a piston through the head, this has been tried and tested over and over.
Yes, I have what you could call a Shep stage 3 trans, with chromoly shift forks and 4 spider center diff and new 2nd, 3rd and 4th gear + intermediate shaft. Currently being assembled. I know drivetrain reliability is 90% up to the driver, I've got a history of broken gears and driveshafts in my other car but I've learned to launch in a way that both gives you better 60ft times and saves the drivetrain, it just calls for a metallic (puck) clutch which doesn't go up in smoke when slipped a bit and slipping it off the line. As for alcohol injection, I want to drag race the car in a street car class which is pretty open except that fuel must be gasoline sold off the pump, no additives of any sort. The difference in efficiency between a 7.6:1 engine and a 8.5:1 engine is a mere 3% in conditions where you're not knock limited (off boost). Once you get into boost pressures above 20psi the 7.6:1 engine will start making more power on pump gas. Of course, if I was building an engine to run on E85 or race gas, I would've gone with off the shelf pistons. The engine is built for 600hp and 8000rpm (manufacturer rating of those rods), but 400 is the target to start with at least. I have some room for improvement in head work and turbocharger when 400hp becomes boring. |
Re: My slow ass DSM build up
Any low end you lose from dropping c/r you can get back by playing with the timing. The risk vs reward of using higher compression isn't in the favor of reward in my eyes. There's far too much risk when it comes to tuning, a weird weather day, etc for me to want to run higher comp, when I can get back low end by playing with timing.
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