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Table Of Contents/Index: Page 1: General Info on Everything I Could Think Of | Props from SR20 Forum Page 2: Compression Theory | Physical Differences B/N Regular DE | Efficiency | Power Page 3: Comp. Theory Cont. | OEM vs. Tubular Header | Which ECU? | Water Pump? | USDM IM w/ RR VC | Engine Break Down Page 4: Dyno Testimony | Reg. DE & RR DE VC Compat. | Water Pump Compat. | Power Curve Diff. | Pulleys | Boost Capability Page 5: ECU Tuning & Ign. Timing | 4CW Crank VS. 8CW Crank | Swap Complete | PCV Schematic - USDM IM | 96-99 Almera GTI
What Does That Mean?: IM = Intake Manifold VC = Valve Cover RR = Roller Rocker CW = Counterweight B/N = Between
here are some other dynos....
jwt ecu -ur pullies 2 set-crushbent 2,25 catback wrx muffler-apexi itc-super afc2-jwts3r cams-hotshot header gen4-stock cat-ground kit-Bored 64 mm TB
this one are a comparation of the same car above and another p11 (home made cai timing 20 3 inch exhaust that its..)
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2001 Nissan Primera GX
430whp at 19,5 lbs...right now 29lbs Stock RR motor.
Chile
Man, I'm so happy people are making use of it! I'm still learning from everyone!
BTW, i can't see the last dyno picture... I wanna know!!!!...
EDIT: I see now!
I got CAI, Header, Downpipe, Thermoblock Spacers waiting to go on... I just need an exhaust and I'm done modding this thing, until I purchase another car... I'm getting excited, and those dynos are great because I can finally see what power I may have when I get the car running... aside from having the USDM 98 Intake manifold...
Last edited by XxToKeSxX : 03-24-2006 at 01:35 PM.
The RR SR20 Valve Cover Will Not fit on the Normal SR20 Heads... The Baffle hits the Oil Squirter Bolts and does not sit... So those of you that like the style, please do not buy one... I assume the same for the VE Valve covers as well... But am not sure about VE. On the other hand... The Regular SR20 Valve Cover Will fit on the RR SR20 Heads...
Here are some pics...
My RR Cover on My Regular 98 DE head... = No Go...
The Oil Squirter Bolts on both sides don't clear the Baffle Plate in the Cover... They do now allow the Cover to seat... Not sure about VE, but I think it might be the same...
Here is the Baffle I'm talking about on the RR VC...
My Old Regular DE Cover on RR Head... There you have it... It fits... My NEW DE cover is painted and ready to put on though!!! Can't wait... Swap still in progress though
Last edited by XxToKeSxX : 03-26-2006 at 03:45 AM.
Somewhere I heard that the RR water pump and the VE water pump are the same... Fine, but I read on here that they were different from the regular SR20... What?????
How can this be???? If the block I have is a 53J, how can the pump be different? I compared my old JDM one and the one that I bought for a regular SR20, and they are the same???
Am I wrong? Or is someone just spitting pure bull sh*t on here...
EDIT: False! Roller Rockers AND VE's use the same water pump as previous FWD SR20's... Search Function Works Again!!!!
the most closely resembling motor to the de is the rr motor found in the newer g20's and primeras. things like the water pump, dizzy, idle control valve and other miselaneous parts on that motor are the same found on the ve. i would be more concerned of a water pump going bad than any other thing... but the water pump from any year fwd sr20 will work. the ve's block is mainly a rr block, just with a few extra holes. so if anything were to really go wrong.. you would be able to find rr motor fairly easy and make it work, or use the some of the internal parts.
Last edited by XxToKeSxX : 03-25-2006 at 01:59 AM.
I'm not sure about USDM, I will look into it... I think you are right though From from looking at the above dyno information... the JDM RR motors make most of their power between 5800 & 6200 RPM...
According to above a stock JDM RR puts out about 118 to the wheels... w/ a tune-up I would imagine it would put out maybe 122 or so...
I use a very generic formula WHP to Crank HP... It is pretty general but its an estimation... I use Crank-HP = WHP*1.16 roughly... (don't quote me)
So, 122*1.16 = 141.5 HP at the crank... but Crank HP doesn't matter...
I really wish Andreas Miko would shed some light on this topic as well...
I will look into the USDM stats... Might be in some of the links on the first page.
The water pump for the Roller Rocker Engine with the 53J heads are the same EXACT water pumps for the normal SR20 head. 53J is the same head that is on the normal SR20 so it only makes sense. I compared my old JDM to my brand new USDM part and they are identical... I'm sure my OEM USDM has the same as well.
Old... not very old actually... but the one that came out of the JDM
New one that I bought for a normal SR20... The blocks are the same... I have a 53J block
Installed it today...
Last edited by XxToKeSxX : 03-30-2006 at 10:17 PM.
For all you SR20DE 2000-01, SR16VE and SR20VE owners, do not, I repeat, do not put any type of aftermarket pullies on your crank. These motors have a 4 counter weight crank shaft that is prone to vibrations in the higher RPMs. If you put a aftermarket pully that does not have a dampener in it like the UR pullies you will have premature bearing wear in your motors and also you can have problems with your clutch bolts or flywheel bolts coming loose.
There is an argument... but its not super valid... There have people that have installed them and had no problems. I don't think the actual pulley is the problem, I think it's people incoherently revving "faster" and hitting higher revs then they would in the normal amount of time.
USDM 91-99 SR20DE 8 counter weights - underdrive crank pulley seemingly ok
USDM 00-02 SR20DE 4 counter weights - underdrive crank pulley (maybe) not ok.
The roller rocker USDM SR20DE engines USDM 00-02 should have problems using an underdrive pulley, however, in the last 6 years I have not heard of one having problems. Experts say they should not be used but... Most of the VEs are 4 countet weight, except the 20v.
Last edited by XxToKeSxX : 03-30-2006 at 10:46 PM.
My RR Cover on My Regular 98 DE head... = No Go...
The Oil Squirter Bolts on both sides don't clear the Baffle Plate in the Cover... They do now allow the Cover to seat... Not sure about VE, but I think it might be the same...
Here is the Baffle I'm talking about on the RR VC...
My Old Regular DE Cover on RR Head... There you have it... It fits... My NEW DE cover is painted and ready to put on though!!! Can't wait... Swap still in progress though
so u did absolutely no work to make the de valve cover fit th RR?
*** if thats the case u *** saved me loads of work
You are correct sir... Bolted right up for me... and it is proven...
Now on the other hand, bolting a RR VC to a DE head isn't going to work... so don't get it confused! To reiterate, this is true mainly because of two reasons.
1) the RR cover for some reason, hits the oil squirters, and...
2) the RR cover also hits the DE Throttle & Cruise Control extensions
Here is more proof of a DE VC on a RR Head, this is with thermobloks & a DE intake mani
Last edited by XxToKeSxX : 04-03-2006 at 05:04 PM.
Or is someone just spitting pure bull sh*t on here...
