DSM DJ
Junior Member
Posts: 74
|
Post by DSM DJ on Aug 19, 2005 1:26:02 GMT -5
paul am i still gonna get your 2nd gen pistons i dont really need the rods but if you wanna throw those in there with it?
|
|
Tsssiawd
Junior Member
I drive a dsm...........................Wanna make out?
Posts: 62
|
Post by Tsssiawd on Aug 19, 2005 2:12:27 GMT -5
so if i went with a 9:1 .30 over piston and cleaned up my stock rods i would be fine? or should i go with the eagle rods?
|
|
|
Post by blackGSX2g on Aug 19, 2005 10:37:49 GMT -5
them being forged is the reason people use them in a 1g/2g combo. The extra compression is a bonus. Mitsu fucked up with our cars and never put all the good things in one. I don't know what you guys are talking about, all stock 4g63s come with cast pistons...1g...2g...n/t...your t...my t...whatever, they are all cast. Why else do you think they run a much tighter piston to bore clearance than I do with my forged Wiseco's? Stock 2g turbo piston to bore clearance is 0.0012 to 0.0020 Wiseco reccomends running 0.003 to 0.004 and often higher depending on the setup...and Wiseco's have closer clereances than most other forged pistons and its still beyond double what Mitsu calls for their stock cast pistons.
|
|
|
Post by wishihadatalon on Aug 19, 2005 16:03:21 GMT -5
them being forged is the reason people use them in a 1g/2g combo. The extra compression is a bonus. Mitsu fucked up with our cars and never put all the good things in one. I don't know what you guys are talking about, all stock 4g63s come with cast pistons...1g...2g...n/t...your t...my t...whatever, they are all cast. Why else do you think they run a much tighter piston to bore clearance than I do with my forged Wiseco's? Stock 2g turbo piston to bore clearance is 0.0012 to 0.0020 Wiseco reccomends running 0.003 to 0.004 and often higher depending on the setup...and Wiseco's have closer clereances than most other forged pistons and its still beyond double what Mitsu calls for their stock cast pistons. Probably blame the mis information on tuners then. I believe I read it there a long time ago so I have believed it for quite a while. Although now I wouldn't understand why you would even bother with paying for 2g pistons if people put stock 1g pistons over the 500whp mark.
|
|
|
Post by wishihadatalon on Aug 19, 2005 16:07:41 GMT -5
so if i went with a 9:1 .30 over piston and cleaned up my stock rods i would be fine? or should i go with the eagle rods? Stock rods will take you pretty far with good tuning. I guess its up to your goals and if you want to put your mind at rest by just over building the motor. (not saying that eagle h beams are over kill but if your goal is only say 350-400 you will be fine with stock rods)
|
|
Tsssiawd
Junior Member
I drive a dsm...........................Wanna make out?
Posts: 62
|
Post by Tsssiawd on Aug 19, 2005 16:41:32 GMT -5
Stock rods will take you pretty far with good tuning. I guess its up to your goals and if you want to put your mind at rest by just over building the motor. (not saying that eagle h beams are over kill but if your goal is only say 350-400 you will be fine with stock rods)[/quote]
Yeah i dont plan on pushing more than that soon. Thanks ill stickl with the rods i have then
|
|
|
Post by blackGSX2g on Aug 19, 2005 17:11:09 GMT -5
Probably blame the mis information on tuners then. I believe I read it there a long time ago so I have believed it for quite a while. Although now I wouldn't understand why you would even bother with paying for 2g pistons if people put stock 1g pistons over the 500whp mark. People mostly go with the 2g (8.5:1 comp) over the 1g (7.8:1 comp) because the higher compression increases spoolup, throttle response, and gas mileage. I felt a huge a difference in all of the above by switching from 8.5:1 to 9:1. Only down side is the higher compression piston you run, the more trouble you will run into running higher boost levels.
|
|
|
Post by wishihadatalon on Aug 20, 2005 2:00:31 GMT -5
Probably blame the mis information on tuners then. I believe I read it there a long time ago so I have believed it for quite a while. Although now I wouldn't understand why you would even bother with paying for 2g pistons if people put stock 1g pistons over the 500whp mark. People mostly go with the 2g (8.5:1 comp) over the 1g (7.8:1 comp) because the higher compression increases spoolup, throttle response, and gas mileage. I felt a huge a difference in all of the above by switching from 8.5:1 to 9:1. Only down side is the higher compression piston you run, the more trouble you will run into running higher boost levels. And you close your tuning window and stuff becomes much less forgiving. But higher comp is fun on a street car. People also say you can make more hp on lower comp because you can run more boost and boost makes more power than a few points of compression.
|
|
|
Post by blackGSX2g on Aug 21, 2005 1:11:37 GMT -5
Well it more depends on the builders goals for the car. Since mine is a daily driver, I wanted good power with good throttle response and better gas mileage (especially at $3 a gallon) so I went with a bit higher compression. If you were building a motor only for drag racing, I would go with lower compression pistons...and if a road track was more your style, I'd go with a bit higher compression to boost throttle response and boost response.
|
|
|
Post by wishihadatalon on Aug 21, 2005 1:40:18 GMT -5
Well it more depends on the builders goals for the car. Since mine is a daily driver, I wanted good power with good throttle response and better gas mileage (especially at $3 a gallon) so I went with a bit higher compression. If you were building a motor only for drag racing, I would go with lower compression pistons...and if a road track was more your style, I'd go with a bit higher compression to boost throttle response and boost response. On the road course thing you dont want to go to high because of the added stress from higher comp with higher boost. That is why mitsu has found 8.8:1 to be ideal for the evo and also why road race says to use 2g pistons for a road course car. They have found it to be the most reliable set up with a 16g.
|
|