Thread: Boosted VVL Piston options (CR Related)

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2011-07-25 21:06:41

#11

blo0d

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Originally Posted by yakuza

On the Mazworx link below the CR of the pistons listed are for turbo applications, don't know if that's the actual piston in the pic, as there are no valve reliefs.
Supertech Pistons, SR20VE - Engine - Mazworx

Ok, will investigate the Mazworx piston
but
FACT: DET pistons on vvl head... no go... Valves will hit pistons.

Originally Posted by revvl-r

Jpsr20det used meth and stock block (stock 10.3:1 pistons)to make more than 550whp. once you control detonation with good fuel then the stock vet pistons with race gas/meth injection is the only cheap alternative to CP's to get to 500whp

sounds good

but I am aware of the stock piston option... seeing what else is out there

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N14GTI-VVL - RIP - Best Qtr: 13.147 @ 99mph 1.87 60'
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2011-07-25 21:21:38

#12

kevwal

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Originally Posted by blo0d

Ok, will investigate the Mazworx piston
but
FACT: DET pistons on vvl head... no go... Valves will hit pistons.

These guys know what they're talking about. You can run up to SR16ve non-N1 cams with the DET pistons. But if you don't think they do you can always get the VE pistons and call it a day. They wouldn't tell you it could be done if it can't work.

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2011-07-25 21:38:21

#13

blo0d

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wow... the total opposite with 3 VVL's running DET pistons locally... dont know why they all bent valves... But ok, that wasnt the point of the thread

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N14GTI-VVL - RIP - Best Qtr: 13.147 @ 99mph 1.87 60'
S13240SX-VVL+T
K6 GSX-R600
---> Z33

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2011-07-25 22:14:41

#14

nissanwulf Online/offline status of nissanwulf is unknown

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Originally Posted by SE-Rican

FALSE info.

Standard DET pistons and off the shelf aftermarket DET pistons can be used. You can run 2.0 VE cams and SR16 (non N1) cams and be just fine. Anything bigger may smack.

My motor has Wiseco off the shelf DET pistons.

i also will agree with statement (cp det pistons)

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2011-07-25 22:34:02

#15

Mr.sentra_specv Online/offline status of Mr.sentra_specv is unknown

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Originally Posted by SR20GTi-R

True statement.

Ran DET pistons @8k with SR16 cams for years with no problems.

i can testify that this is the truth. saw the head being put on the de bottom. i also saw it put lots of power down on the dyno to 8k with sr16 cams. the engine is in some one elses car running fine right now as well.

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2011-07-25 23:49:26

#16

THOR

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Back to topic...

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Calum basic, N60 maf, N1 cams, Greddy mss, JWT cam gears, ssac 2.5" header, 3" exhaust, Vibrant oval pan, ES bushings, JWT popcharger, B15 stock clutch disc and A.C.T. HD pressure plate, 8.5 lbs Fidanza flywheel, gt-s tranny, Prothane E/Mounts, Vz-R front seats, TEIN HA coilovers 197whp/146wtq

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2011-08-06 01:39:31

#17

Phat_sx

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Yea not sure where you heard that info but i have 8.5 CPs and vvl head no issues at all. I believe i remember reading somewhere you can even put a vvl head on the stock 9.5 bottom end no problems...

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2011-08-06 16:38:45

#18

THOR

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can someone show pics of the top of a DE piston and also the top of a ve piston....thanx

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2011-08-06 17:45:26

#19

cortrim1

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VE, DE, DET

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Mike
92 SE-R SR20VE-T 6262 Powered 535whp and 380lbft @22psi
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2011-08-07 16:07:16

#20

THOR

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ok great so if u look at the edge where the valve reliefs are on the ve piston u will see the relief goes almost to the edge of the pistons. if that relief isnt made then it will cause the valve to touch the piston

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