SR20DE Pistons In A DET
SR20DE Pistons In A DET
OK so the DE pistons have a higher compression than the DET so what effects will DE pistons have in a DET motor
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BoostMyRide
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Re: SR20DE Pistons In A DET (Wyt_Boy23)
higher compression isnt always good, i would think if you threw the DE pistons in the turbo would blow the rings out because compression is too high. do some research on it and figure out what the CR is with the DET pistons and the DE, you might be able to slide by???
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Hijacker
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higher compression on a turbo motor will limit how much boost you can run.
However, the DE and DET pistons should have the same compression ratio. The difference was in stock headgasket thicknesses. The DET had a slightly thicker gasket, lending it to a lower CR IIRC.
Also, high compression won't blow rings out. It'll cause pre-detonation, which will destroy the piston.
However, the DE and DET pistons should have the same compression ratio. The difference was in stock headgasket thicknesses. The DET had a slightly thicker gasket, lending it to a lower CR IIRC.
Also, high compression won't blow rings out. It'll cause pre-detonation, which will destroy the piston.
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BoostMyRide
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Re: (tenkawa_akito)
lol unless you wanna try to run higher octane fuel or diesel xD
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fliprayzin240sx
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Re: (tenkawa_akito)
U
Did you just say the DE and DET pistons have the same compression?!?! How is 10.1:1 compression vs 8.5:1 the same compression?!?!tenkawa_akito wrote:higher compression on a turbo motor will limit how much boost you can run.
However, the DE and DET pistons should have the same compression ratio. The difference was in stock headgasket thicknesses. The DET had a slightly thicker gasket, lending it to a lower CR IIRC.
Also, high compression won't blow rings out. It'll cause pre-detonation, which will destroy the piston.
Re: (fliprayzin240sx)
The DE is 9:5:1 and the DET is 8:3:1 i think ... and yeah i was talking to a guy and he told me that it could or could not have an effect or it could pre-detonate ...what exactly does that mean ....... and also he said always run on good octane
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Hijacker
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A stock FWD DE should only have a 9.5:1 ratio. My parts guy just told me that there was a eurapean variant that had 10.1:1 CR.
Flip, read my post again. You'll see that I said that I had thought the CR change was attributed to headgasket thicknesses (which is true to a degree. but not enough to account for that drastic a change in CR) A stock, FWD DE piston will have a slightly shallower dish in it, providing a slightly higher CR than a RWD DET piston. it's why everyone who buys Wiseco pistons for their RWD SRs have to contend with a higher comp piston.
ADDON: Basic physics lesson for the OP. If you compress air, it gets hotter. So in the combustion chamber, when you have fuel mixed in with the air, as the air increases in heat, it has a higher chance of igniting the gas mixed in it without the aid of a spark plug (pre-detonation). A higher octane rating is basically an estimate as to how much a gas will resist pre-detonation.
You will want to run the highest octane pump gas you can buy if you increase your CR, or run a turbo/supercharger.
Flip, read my post again. You'll see that I said that I had thought the CR change was attributed to headgasket thicknesses (which is true to a degree. but not enough to account for that drastic a change in CR) A stock, FWD DE piston will have a slightly shallower dish in it, providing a slightly higher CR than a RWD DET piston. it's why everyone who buys Wiseco pistons for their RWD SRs have to contend with a higher comp piston.
ADDON: Basic physics lesson for the OP. If you compress air, it gets hotter. So in the combustion chamber, when you have fuel mixed in with the air, as the air increases in heat, it has a higher chance of igniting the gas mixed in it without the aid of a spark plug (pre-detonation). A higher octane rating is basically an estimate as to how much a gas will resist pre-detonation.
You will want to run the highest octane pump gas you can buy if you increase your CR, or run a turbo/supercharger.
Re: (tenkawa_akito)
damn couldent have said it better myself...... but yea i have the stock t25 and yea thats the same i was told the best you can do is to have a good cooling system and 93 octane and that i should be good ...not to mention u can get a bit more power