capn

Well since you asked nicely, the process of obtaining money for my project is a long and slow one. And as we all know (or those of you that can read) I am off at college till the summer and am 150 miles from my garage and my car. But since I have been away I have had my regular access to my PRO/E engineering software. SOOOOOO i have been researching my engine options as far as the build up.

So this is what I have thought as far as the engine is concerned:
.020" overbore
11.5:1 or 12.0:1 CR forged pistons
total seal rings
Eagle H beam rods
Kelford performance cams
Ti retainers
2JZ springs
more porting
ARP head studs
ARP rodbolts
ARP Bottum end bolts
klevite bearings
thermal coat piston heads
teflon sideskirt coat

thats what I have as far as upgrades go and my expectations for the motor are atleast 100bhp/L and a reliable package. Since the 1UZ has sported an average life about about 200K-300K miles I want it to keep that something in its repetuar (sp?). but right now getting money for all this and paying off a speeding ticket do not lend itself to progress.

That is all for now, i'll update next time when I have something substantial to report.

setzep

I think this might be the same engine but someone stuck a supercharger on it.

http://video.google.com/videoplay?do...rcharged&hl=en

capn

yup thats an old aussie video, I think he slapped a weiend 371 on that badboy. but yes same engine its pretty popular down there.

Eggie

"Repertoire" or "repertory."

RotaryEvolution

iTrader: (30)

no offense but where did you find the 200-300K average mile markers for a northstar? we had at least one apart in the shop at any given time, some with less than 60k on them. the head stud kit is a good idea to prevent some of the normal issues with the engine though.

rarson

Those numbers are for the 1UZ Toyota engine.

capn

Where have you been man? as rarson already said those are the number for the 1UZ.

But I gave up on the Northstar just because of how big it was and also very little part availability.

So its now toyota.

BUT since I am posting now I would like to show my progress on designing an ITB system for the 1UZ using GSXR750 throttle bodies.

PICTURE TIME!!

This is my first design to adapt the throttle bodies to make them stick straight up, but I determined the injectors would be fouling because of the angle


This is my second design making it so the Throttle bodies are at an angle to promote better flow. and a better 1 piece adaptor.



So as you can see I have been doing more designing and research then anything else. I am also designing these for sale once they are done, I am trying to make a kit for $500-$600 less the throttle bodies.

Also I am CADing up the adapter plate so a 1UZ U1 bellhousing can be mated to a T56.

So I will update on that later.

But while you are waiting check out my site in my sig.

rarson

I would suggest matching the port shape and taper it into the throttle body shape. I don't quite remember, but if the injectors protrude into the head, as it looks like they do, it would probably be best to fill in the head at those spots and use smaller runners, if you're planning on using the GSXR injector locations.

Those are some awesome renderings, too.

capn

Luckly I have matched the ports to the throttle bodies already and they look beautiful. And I am not exactly sure what you mean about the injectors, I degreed them out so they would give a better spray pattern. I may even lower the depth of the plate so it is closer to the port, almost like factory.

Here is a cutaway of the port and injector to show you that it is almost shotting directly in the chamer.

digitalsolo

iTrader: (2)

An 11.5-12.0 CR is going to make that car ping like crazy on pump gas unless you're running some huge cams to bring the DCR down.

What's your plan for that?

capn

that CR is just an estimate at what I want, I mean I have seen alot of SBC and hondas and other types running high CRs on pump gas. I am not a professional engine builder by any means or try to be so I have to research more about what I need to make it a streetable engine on 93 pump.

As far as cams go I am most likely going with some cams from Camshaft shop or Kelford seeing as they are the only ones that supply cams for the engine. The ones I will most likely go with are the 288 or 272 intake and 240 or 232 exhaust. They have some race cams that are for supposed 430-470hp but they require the shims to be replaced with diffent type buckets.

My goal ultimatley is to get the engine as close as I can to a Ferrari F430 spec in a 4.0 package which is putting out 483hp from a 4.3 liter engine. So if i can get 112hp/liter or damn close to it I will be happy with a 400-450hp output at the crank.

BTW the ferrari only runs 11.3 CR

rarson

11.5:1 shouldn't be too hard on pump. A lot of K-series Honda guys are running 12.5:1 and up.

OKRX-7

Man, sorry to hear the northstar didn't go any further. I have two of them sitting in my shop and access to a cheap *** FC sans motor...

digitalsolo

iTrader: (2)

Yes, with variable valve timing and big cams. Your DCR matters more then your SCR, but you still have to assure your cam timings can keep your DCR low enough to avoid detonation.

capn

well you seem to know about DCR, tell me more about it then.

slo

iTrader: (1)

Here is a decent explanation of DCR with a dynamic compression caluculator.

http://www.rbracing-rsr.com/comprAdvHD.htm

rarson

Well yeah, that's my point. Most people modding N/A engines are going to get a pretty big set of cams, so in most cases, you have to raise the static CR a little bit just to keep good driveability.

capn

So I have been reading a lot of articles concerning this "dynamic compression" business and I have gathered that most street engines have a DCR between 7.5:1 and 8.5:1 and 8.5:1 DCR is near the upper limits of the "otto" cycle on 91-93 pump. Race engines can get away with a higher CR and DCR (around 8.8:1 and 9:1) because of race gas.

Yet what I am still trying to figure out where I can find the after bottum dead center where the intake closes, so I can compare stock engines to race engines.

if anyone can give me more info on the it would be awesome, or if someone could find out the DCR of the F430 engine

capn

well I havent updated in a while so I thought I would give a little snippet of info

what has happened since last update...nothing

as far as anything done to the car goes, but I have made progress on reverse engineering the 1UZ a little more.

I am also just pissed off to tears that I do not have this thing going (mostly due to my indecisivness(sp?)) but then again I am 150 miles from it and can only hope to find a cheap T56 I can use for dimensioning and so on.

but here are the pics

The last picture shows my inspiration for my engine bay clean and simple hopefully I can get there!

88IntegraLS

Don't confuse activity with results. Grab the project by the ***** and make it happen!

slow7NC

welcome to the v8 club

capn

well...no one wants to hear this (me of all people) but I am selling it. I haven't been able to do any work on the car for 2 years and its just depressing to see it there in the garage.

linky

hopefully I can find a nice one later on that I don't have to do any work to.

88IntegraLS

That blows.

OT: anyone got a CYM LSx FD for sale?