qr20dd pistons

Blacknightspec5 · 2008-10-27 23:14:20

how, where can they b found?

cute02spec · 2008-10-27 23:16:44

Gots to come from Ja-pan, unfortunately.

Time to make connections at Nissan!

RedDragonV09 · 2008-10-27 23:47:24

what the hell is an sr20dd?

nismored · 2008-10-27 23:48:37

hey modifier.....it says qr20xx.....

armadnigeneral · 2008-10-27 23:48:52

RedDragonV09 wrote:
what the hell is an sr20dd?

QR20DD = direct-injected version of QR20DE. Found in a Bluebird Sylphy.

dbarnett · 2008-10-27 23:50:16

^^ actually it does say "qr20dd pistons"

armadnigeneral · 2008-10-27 23:52:11

Wow, this is bad. 5 of 8 posts are completely worthless.

Last edited by armadnigeneral (2008-10-27 23:52:33)

cute02spec · 2008-10-27 23:53:34

Mine isn't worthless... you have to order them from Japan... that's what wiperdragon had to do to get his.

Obsidian · 2008-10-27 23:54:54

cute02spec wrote:
Mine isn't worthless... you have to order them from Japan... that's what wiperdragon had to do to get his.

So, where did he ACTUALLY get them?

cute02spec · 2008-10-27 23:55:55

Obsidian wrote:
cute02spec wrote:
Mine isn't worthless... you have to order them from Japan... that's what wiperdragon had to do to get his.
So, where did he ACTUALLY get them?

It's a Japanese motor... not sold in the US...

He got them from Japan.

Jesus, I'm not fucking around here.

dudeof05 · 2008-10-27 23:56:56

Big J wrote:
the qr20dd is 10.5:1 in a QR25 the compression ratio would be like 16:1. The standard 9.9:1 QR20 pistons are 12.4:1 in the QR25.

please elaborate

you say this because of the longer stroke on the qr25?

armadnigeneral · 2008-10-27 23:57:57

cute02spec wrote:
Mine isn't worthless... you have to order them from Japan... that's what wiperdragon had to do to get his.

Meant to say 4 of 8 It didn't go downhill till after your post.

gurov · 2008-10-27 23:57:57

if someone has a better idea on where to get these, more power to them, they're dropin replacement, 13.2:1 compression ratio:

these are qr20de

gurov · 2008-10-27 23:58:29

Big J wrote:
the qr20dd is 10.5:1 in a QR25 the compression ratio would be like 16:1. The standard 9.9:1 QR20 pistons are 12.4:1 in the QR25.

12.4 ?

undertakernismo · 2008-12-03 23:19:17

2 questions here:

a. Will the stock block hold up a 13.1:1 compression ratio or does it need to be sleeved?
b. Any ideas on the price of the pistons? I'd like a set for my car, I'm interested in an N/A build.

se-rman6 · 2008-12-03 23:23:16

undertakernismo wrote:
2 questions here:

a. Will the stock block hold up a 13.1:1 compression ratio or does it need to be sleeved?
b. Any ideas on the price of the pistons? I'd like a set for my car, I'm interested in an N/A build.

prolly not sleeved but Im sure youll have to run some sort of race gas or do something to increase the octane so you dont get knock. I think will messed with the timing to get by running race gas but idk.

gurov · 2008-12-03 23:26:39

se-rman6 wrote:
undertakernismo wrote:
2 questions here:

a. Will the stock block hold up a 13.1:1 compression ratio or does it need to be sleeved?
b. Any ideas on the price of the pistons? I'd like a set for my car, I'm interested in an N/A build.
prolly not sleeved but Im sure youll have to run some sort of race gas or do something to increase the octane so you dont get knock. I think will messed with the timing to get by running race gas but idk.

timing doesn't get messed with by running race gas.

you'd just have to make it not knock by dropping the timing a bit - standalone, or some other box that changes timing.

the stock block holds up whatever these pistons put out just fine, you have to control it correctly. not that big of a bump in power anyway, turbo is easier and more fun

se-rman6 · 2008-12-03 23:27:51

gurov wrote:
se-rman6 wrote:
undertakernismo wrote:
2 questions here:

a. Will the stock block hold up a 13.1:1 compression ratio or does it need to be sleeved?
b. Any ideas on the price of the pistons? I'd like a set for my car, I'm interested in an N/A build.
prolly not sleeved but Im sure youll have to run some sort of race gas or do something to increase the octane so you dont get knock. I think will messed with the timing to get by running race gas but idk.
timing doesn't get messed with by running race gas.

you'd just have to make it not knock by dropping the timing a bit - standalone, or some other box that changes timing.

the stock block holds up whatever these pistons put out just fine, you have to control it correctly. not that big of a bump in power anyway, turbo is easier and more fun

yeah i worded that badly, i meant either youll have to run race gas to keep the knock down or do something with the timing

undertakernismo · 2008-12-03 23:46:28

gurov wrote:
se-rman6 wrote:
prolly not sleeved but Im sure youll have to run some sort of race gas or do something to increase the octane so you dont get knock. I think will messed with the timing to get by running race gas but idk.
timing doesn't get messed with by running race gas.

you'd just have to make it not knock by dropping the timing a bit - standalone, or some other box that changes timing.

the stock block holds up whatever these pistons put out just fine, you have to control it correctly. not that big of a bump in power anyway, turbo is easier and more fun

Thanks for the info, guys . I'll be on research mode....

SE-R RACER · 2008-12-04 07:06:59

a friend of mine is running those pistons with a 75shot. I ordered those pistons for him

Black04SpecV · 2008-12-04 07:33:13

SE-R RACER wrote:
a friend of mine is running those pistons with a 75shot. I ordered those pistons for him

In QR?

75 shot with 13.2:1 compression??

SE-R RACER · 2008-12-04 07:43:48

Black04SpecV wrote:
SE-R RACER wrote:
a friend of mine is running those pistons with a 75shot. I ordered those pistons for him
In QR?

75 shot with 13.2:1 compression??

yeap. i don't know how but he did. now i'm getting 07 rods for him

Black04SpecV · 2008-12-04 07:48:49

SE-R RACER wrote:
Black04SpecV wrote:
SE-R RACER wrote:
a friend of mine is running those pistons with a 75shot. I ordered those pistons for him
In QR?

75 shot with 13.2:1 compression??
yeap. i don't know how but he did. now i'm getting 07 rods for him

Damn he must have same way of controlling timing, run alky or race gas... To prevent the engine from knocking and detonation...

Thats crazy, though... I wouldn't even dream of running nitrous with that high of compression...

SE-R RACER · 2008-12-04 10:20:44

Black04SpecV wrote:
SE-R RACER wrote:
Black04SpecV wrote:

In QR?

75 shot with 13.2:1 compression??
yeap. i don't know how but he did. now i'm getting 07 rods for him
Damn he must have same way of controlling timing, run alky or race gas... To prevent the engine from knocking and detonation...

Thats crazy, though... I wouldn't even dream of running nitrous with that high of compression...

i'll try to find all the info today. let me tell u....us, from p.r, do some crazy things but the guys in dominican republic do some crazy shit.

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Re: qr20dd pistons

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