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Thread: All-Motor (NA) Engine Build

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Posts: 1-10 of 70
2011-08-30 00:20:13
#1
All-Motor (NA) Engine Build
basically a spin off of one of Kojima's NA motors but with alot of key modifications and block prep/mods to the bottom end and crank case to eliminate losses due to windage (oil cloud formation/turbulence).

some specifics:

DET head w/ sodium filled exh valves and mild port/debur job
C3 Cams
JWT springs and Ti Retainers
98 rocker arms
all slotted pucks (no flat shims)
RR HVLA's
CS Cam Gears
ARP Head Studs
OEM Nissan HG

Fully machined, cleaned and prepped DE Block to GTiR specs
360 degree main oiling
internally polished crank case and oil passages for oil shedding/windage reduction
All new Stainless Steel Freeze plugs
OEM VE oil pump kit
VE 4CW crank (Knife-edged, chamfer and polished)
Custom Crank Scraper
modified upper oil pan for windage reduction
Eagle Rods
SR16 Pistons
Custom Piston Oil Squirters (improved oil flow and positioning)
Calico coated ACL main, rod and thrust bearings
full OEM Nissan Gasket set used for assembly (all new seals/o-rings/gaskets)
Motul Assembly Lube
Permatex RTV for sealant


















So thats about it...I may be forgetting some stuff...but the point of this thing is the attention to detail/prep/machine work and the windage and crank case improvements coupled with a solid valvetrain/cam setup and the higher compression of the proven sr16 pistons in a DE. I did a leakdown test on all 4 cylinders and passed w flying colors. One of the best Ive personally seen even on a new engine...

I expect with good injector choice, tune, light flywheel and manifold configuration it would easily make reliable power into the mid 200's with a nice well distributed and somewhat controllable curve (as opposed to a VE) and can be reved pretty well without having to go to hell and back to make the necessary power.

It was intended for a track car I was building where I didnt want to have to rev super high to make power to get out of turns, elevation changes, etc.

The first idiot fanboy that says "why not just buy a VE" deserves to be castrated
Last edited by jRod on 2011-08-30 at 00-24-47.
2011-08-30 01:05:16
#2
looks good, what are "RR HVLA's"?

I wanna build a street stroker engine and everyone thinks I am nuts also! To hell with 'em. Plenty of fun to be had with an SR20DE engine I say!
2011-08-30 01:48:16
#3
looks like a fun build, cant wait to see it on the dyno and what numbers it puts out. when/if i get my motor back from when it was stolen i want to do a small build with sr16 pistons and a few other goodies, if my motor makes it into the 190s in whp ill be happy...
2011-08-30 01:57:41
#4
Nice build! Cant wait to see the results!
2011-08-30 03:42:59
#5
I dont know about mid 200hp but close to or around 200hp if you talking whp is more reasonable.
2011-08-30 03:45:07
#6
nice! I'll be doing a similar build for my s13 (assuming I can convince myself not to boost it).
2011-08-30 04:17:59
#7
Originally Posted by Viprdude
looks good, what are "RR HVLA's"?

I wanna build a street stroker engine and everyone thinks I am nuts also! To hell with 'em. Plenty of fun to be had with an SR20DE engine I say!


Roller Rocker Hydraulic Valve Lifter Assemblies

they operate with a higher volume of oil than the traditional non-roller rocker SR's

Its only time and money LOL have at it man....this build is for sale

Originally Posted by NissanGuy
looks like a fun build, cant wait to see it on the dyno and what numbers it puts out. when/if i get my motor back from when it was stolen i want to do a small build with sr16 pistons and a few other goodies, if my motor makes it into the 190s in whp ill be happy...


Originally Posted by tj5854
Nice build! Cant wait to see the results!


Yeah. Unfortunately I sold the shell I was gonna put it into so I have no purpose for it now

Ive been wanting to put it for sale but I dont think I will get any serious buyers. Very few people buy built engines...especially in these times...if anyone is interested and wants a bad ass engine for less than the parts/machining would cost them send them my way

Originally Posted by 1sentra-se-r
I dont know about mid 200hp but close to or around 200hp if you talking whp is more reasonable.


I do...alot can be done with this combination, good management and custom manifolds (intake/header) not 250 whp if you want to hold me to TRUE "mid" 200's but I am more than confident it will produce over 200whp...take a look at similar engines built by others. There are also a few tricks I have with external "add ons" that will almost completely eliminate windage loss.
2011-08-30 10:32:46
#8
98 rocker arms
all slotted pucks (no flat shims)
RR HVLA's

A Andreas Miko invention since 1998, that works wonders.
2011-08-30 10:39:10
#9
nice!
2011-08-30 12:52:02
#10
When you said mid 200hp I was thinking some along the lines of 230-250hp. But I did say around 200hp which give or take a few and im talking whp but if to the crank then yea. Either way Im not doubting you so good luck with the build. Also who did the crank and what did it cost?
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