When cruisin on the fwy around 70mph, my rpm is around 4K on 5th gear. Im not sure if this is a normal gear ratio but seems pretty high. How can i fix this so that i'll be running in a lower rpm but still maintain a solid 70mph? Plus im assuming it'll eat up gas alot when the rpm is up that high for a long period of time. Help me guys.

what diff r u running?

its a KA right?

i have the SR but still it should not matter. i have a KAZZ LSD dough, i'm at 3400 RPM at 80 mph.

A. Those Low Pro Honda Wheels arent helping (And They're sunk to the max)

B. 4000RPM even with shitty wheels should be around 90MPH on an SR or KA

C. If you still want a lower gear the 47/11 R200 out of a J30 will give you a 3.90 Gear. (opposed to 4.08)

Thank you. I'll take it to the shop today and see about the J30 swap.

treu i just tested that on GT4, i made the final drive 5 insted of 3 and my top speed was higher!

that would be called a HIGH GEAR, semi trucks have a LOW first gear lol, takes them to about 4mph. A Higer gear has a lower number and covers more MPH... A Lower gearing has a higher gear ratio number and covers less MPH.

Low Gear=5.11
High Gear=3.08

I know its confusing..... but thats how it is
:smokin:


Thanks for clearing that typo up.... 5 days after the already retarded thread died...

ahhh... can u feel the love!!?

your welcome good ole pal


sometimes when you see a retarded thread, with retarded stuff in it, you just have to clear it up, no matter how old it is or how retarded R.W is, it must be done so some impressionable person doesn't read it and start spouting off the wrong things.


Like that one time when you said the KA a had a better head than an SR on the basis that the KA was more like the RB and you got owned. hahaahaha. yeah that was cool. :gay:

2JZ is not a rev monster.

actually I like the KA cam on bucket camshaft design. as do a lot of people. It is used on most Bike motors, we all know what kind of rev monster say something like a Honda 900 sport bike is...Supra 2jz engine, 4age, Rb26 has it....

the main benefit of that design is it has less weight in the valvetrain.

also if u really want to get stallowned I will try to dig up some head flow numbers ...............


Oh I know that the Cam on Bucket is technically superior... However in the case of the KA where the cam on bucket design prohibits running a large lift cam it is obviously an Impediment. Also I belive the 4A-GE needs modifacation to run huge RPM and Huge Cam... something about the cams knocking off shims or something?

What Im getting at is your saying its better on the basis that "well if it works that well on an engine designed to race then it must be just as good on a motor that the designers had near zero expectations to race." is a Falisy which was pretty well tramped all over by Nissan Eleitest (try and tell me you know more about Nissans than him)

What Im getting at is that you post generic information that in some cases is either Irrelevant, Opinion, or just False (You do also post decent info which I usually just agree with or not say anything) but then when I / Others call you out on the bullshit or something thats a blanket statment that 240s dont fall into (case in point Cam over Bucket) or you get backed into some corner (ie Nascar Thread) you defend it to the bone and eventually fall back on the "I work with this everyday blah blah you just read books". Then theres this thread - I make a common brainfart mistake and you parade it around as "look - proof this kid dont know shit" like you were Carrrol Smith.

yeah I recall the KA vs SR headflow numbers... what good are those if the KA Head can only make it to 10mm of lift when the SR can do 13mm

IBlockandbanforgoingcompletelyofftopic

lift is not the only thing needed to make an engine have power, there are other factors, just on the cam alone. Duration plays a big factor on turbo cams, and they are different then a N/A performance cam. As more and more people are making over 500rwhp on KA's.... I think we have seen that they don't need the extra 3mm of lift to do a competent job... anyone who needs more then 500rwhp for a daily driver has a screw loose or has never driven something like that

Werd.

anyone who needs substantially more power for racing has the wrong motor, that being the KA and the SR...

Not necessarily. The KA hasn't been pushed very far yet. I mean, we haven't seen anybody just go balls to the wall with a crazy T66@30psi+. Rick ran a GT35R with a custom intake manifold. And I don't even think he had cams.... Then Ivan ran basically the same turbo with a stock intake manifold and Crower V3's. So its like WTF? Just combine the parts you know? But I just saw a T66SR put down some crazy numbers on FA.com(like 640+ or something) so the KA and SR still have room to play. And all of them are streetable. I think trapping at 130mph+ is def race car material. So, we'll see how much further all of these awesome engines go. Only bad part is Rick is selling his car...

BTW, this is a textbook discussion. Keep it up!

Also please note, the Sr valvetrain has its fair share of problems.... problems even a few aftermarket companies have gone after to make a few bucks.

I Never said the SR didnt have its fair share of problems. I said it was better than the KA from a power standpoint. the SR head has been taken to 11K+ by Multiple Drag cars and has the capacity to flow 980WHP worth of air. The KA has yet to prove to be able to do that and just by what Ive heard about Ivan's exploits its not looking too good.



lift is not the only thing needed to make an engine have power, there are other factors, just on the cam alone. Duration plays a big factor on turbo cams, and they are different then a N/A performance cam. As more and more people are making over 500rwhp on KA's.... I think we have seen that they don't need the extra 3mm of lift to do a competent job... anyone who needs more then 500rwhp for a daily driver has a screw loose or has never driven something like that... anyone who needs substantially more power for racing has the wrong motor, that being the KA and the SR....

Duration is important. however your arguing that on a turbo motor you can just make the duration longer to make up for low lift? Thats not the smart way to do it. all a big duration cam is gonna do is make for overlap and a motor thats gonna make peak torque at 6-7000RPM (which in relation to the KA is gonna be a feat to keep it together that high.) Most 1200WHP Skylines are 12.5mm at 280-290 Duration. and they rev to 12-13K




see RW, your problem is, you are very like many of the things you accuse me of, your just too blind to see it yet. This is why we argue so much. And because your always putting shit after my posts trying to bring me down, you are right, i will do it everytime I see you slip, just to be fair.

Im not always trying to bring you down. For the most part Im just correcting you. I cant call you names anymore or Mommy NissanFanatic will get Angry :/


all your doing is calling the kettle black.


RACIST!!!!!11111111111111!!!!!!!


and yes dude, working on cars professionaly makes you a shitload smarter about how the parts operate. Im sorry thats just how it is.

IIRC you work in a transmission shop... which you yourself have admitted putting a transmission together is not that hard So dont bust out the High Horse "Im a proffesional blah blah I must be the only person here that knows what hes talking about" bullshit. Nissan Fanatic, you, I, and a few others here have all worked on our cars extensively so quit trying to say you know more than us just because you get paid 7.50 an hour.

Case in Point That toolbox from Boost Designs worked at a car shop "proffesionally" and he got called out by a 17yr old on intake manifold design. meaning just because you work at a shop or have a means to make parts doenst mean you know what your doing.

Duration is important. however your arguing that on a turbo motor you can just make the duration longer to make up for low lift? Thats not the smart way to do it. all a big duration cam is gonna do is make for overlap and a motor thats gonna make peak torque at 6-7000RPM (which in relation to the KA is gonna be a feat to keep it together that high.) Most 1200WHP Skylines are 12.5mm at 280-290 Duration. and they rev to 12-13K

No. Black and white are both important in a picture while a happy medium makes for good contrast and in return a good picture. Both are required for a nice cam setup. If you just open the valve very large briefly while the cylinder is drawing air in, it has little resistance to fill it for that brief moment, but from then on, it is not filling while it is traveling down. On the other hand, if you open the valve slightly while leaving it open for a good deal of time, much resistance is had while it draws air in. But it can draw air in for longer while it travels downward. Hence, the cylinder fills more completely. So, which would you rather have? Me, I would have a little of both.

Duration... It can be had in large amounts and overlap not become a problem. 4* or more of overlap is about as far as you can go before you start blowing air/fuel right into the exhaust making for an unhappy turbine wheel. SO, that leaves what? 356* of duration for the rest? Hmm, put it where you like. I would add it on each opposing side of overlap. Add------overlap----------Add

No. Black and white are both important in a picture while a happy medium makes for good contrast and in return a good picture. Both are required for a nice cam setup. If you just open the valve very large briefly while the cylinder is drawing air in, it has little resistance to fill it for that brief moment, but from then on, it is not filling while it is traveling down. On the other hand, if you open the valve slightly while leaving it open for a good deal of time, much resistance is had while it draws air in. But it can draw air in for longer while it travels downward. Hence, the cylinder fills more completely. So, which would you rather have? Me, I would have a little of both.



Thats a given. I was refering to the constraint of the KA head where big lift is impossible. so the only way around it is more duration... which maybe what crower tried early on and it didnt work out.

What your talking about (a balance of both) is probably what Ivan stuck at right now at 600WHP. (which is confirmed by the huge torque number.)

and yes dude, working on cars professionaly makes you a shitload smarter about how the parts operate. Im sorry thats just how it is.

ok im calling you on this one sr20. you work in a transmission shop. you dont do anymore work on ka or sr cylinder heads, turbos, ect than RW does.
yes this statement is true but you have got a lot to learn before this even starts to apply to you. please stop acting so arrogant and then use this argument as your basis for experience. i have experience working at an ACTUAL repair shop where we get our fair share of every kind of car and problem, and i worked at a performance garage for a while too. i can tell you that you need to loosen up more and realize you arent the knowitall you think you are. this is not personal in any way, i just see you making all these arguments about book knowledge and whenever anyone argues it you fall back to the "dude i work in a shop". when it comes to statistics and shit like that IT DONT MATTER.

ok hopefully this is the last i will say on this matter.

actually R.W. I get paid 25.00 an hour.
I work at a transmission shop, we do brakes, axels, driveshafts, oil changes, a/c work, differential work, wiring work, basically we do everything but heavy engine work. That being said I still work on engines myself. I have a KA and a LT-1 im working on.

So... Your Experience is Irrelevant in this conversation unless A/C work has alot to do with head flow :uhoh:

Edit: I just read the A/C Vent thread. Quick thinkin on the vacuum lines cheif. hahahaha.



im still trying to find out where I said I know it all. Sorry but I consider general repair mechanics not as smart, and they consider themselves the same. Transmission techs are a totally different breed and work on something more complex then your average mechanic graspes. I stand by that, as the dozens of people who come to our shop for help, these are 40-50 year old mechanics that own their own shops and all, been in business for years doing general repair... they know where to come for the hard stuff to get done.

Man you have got the holier than thou down to a T.


What did I say? something like I work at a shop and we know a lot more just from working on like 5000x the cars you do? thats not saying you know it all, thats saying you know more from all the work experience...
any half competent employer would agree with me.

Soo...

Knowing how to Repair a transmission = Masters in Fluid Dynamics

damn... screw college

What your talking about (a balance of both) is probably what Ivan stuck at right now at 600WHP. (which is confirmed by the huge torque number.)

That, the stock intake manifold, 3" downpipe and exhaust (IMO, they say it isn't a restriction but I say BS and numerous articles agree with me), and that isn't his car. It is a customers' car so they pay for everything. You are correct on the lift.

Knowing how to Repair a transmission = Masters in Fluid Dynamics

damn... screw college

Yes. This is correct.

Knowledge>expirience. Knowledge can be gained from expirience. No question about it. And in fact, it originally was. Those who tried and tested things, then published them are what I try to use to my advantage. Basically, use other's expiriences to better make your decisions.

yeah laugh at that vacume part you moron, that is what controls a/c vents, as someone backed me up later on.... shows what you know lol


Cables control the vents numbnut. How do I know... uhhh. Ive taken My AC Out. there were no vacuum lines. someone backed you up later only to find out that the kid replaced every vacuum line on the car and found none going anywhere remotely near the AC... Old School Domesic Knowledge - FAILED


Also you fail to realize that the kid that went to college for engineering (I havent seen classes in Transmissions anywhere) isnt applying at Big Joe's Boonie Ass Tranny Shop hes applying at the Manafacturer and designing the transmission / car.

Whos gonna get hired for an F1 Team? Big Earl who rebuilt 350 Automatic transmissions for 10 years but cant tell his Ass from a peice of Titanium or the kid that has a degree in Industrial Engineering that has a good start in knowing how extremely low tolerance parts should be designed and then machined.

Knowledge >>>> Suckass Experience. Hence why your getting onwed

LOL if you are going to seriously argue that people out of college work in the service industry as a rule this thread may as well get shut down right now. just because your sister is a failure doesn't mean that any significant portion of college grads end up like her. its all what you make of it. if you have the ability to get through college you damn well should have the ability to find a job that will use your knowledge and pay you for it. case in point. my friend todd, has an s13, is going to UC berkely to double major in mechanical engineering and materials science, hmmmmm i am going to go out on a limb here and say hes going to end up making more than $25.00/hour here very shortly??? and his S13 is going to be a beast.

but the real issue is we (the US) wouldnt get anywhere if ALL people either went to college and would only do research work or if ALL people only went to work for their parents and didnt learn anything new and NOBODY did research work. then we are fucked. you need both for a successful economy.

someone with a degree in auto repair and ASE cert. will 11 times out of 10 get hired before someone with 10 yrs experience and no school or certification


and i actually do have experience(and tons of book knowledge) so anything you say about 'us' talking smack without experience doesnt apply to me apparently. just making it clear.

Anywho, I'm not fixing other peoples' shitty cars for a living. I'm joining the Navy to get expirience/knowledge in either nuclear engineering or advanced electronics. So this debate is pointless for me anymore. I'd rather enjoy cars as a hobby and have plenty of money to do it.

put a transmission in front of you, and we will see how much you learn, read as many books as you can first, then I want to see how fast you can take the transmission apart with all your knowledge but no experience... I gurantee it would prove my point in about half a minute, no matter how much you read about doing it, nothing makes you smarter then actually doing it.

The first thing I woudl ask you for is a service manual.;)

Speed=/=good work. Repititoin clearly makes you better at speed. But whoever said we were arguing about who can fix their car the fastest? Thats just not a good idea.

Just to make you warm and fuzzy inside SR20DETpower, I did try a day at a shop not too long ago. I sucked. yes. Shop enviroment is not for me. But its funny you mention being smart. This other guy that I with was currenty in school for AC Delco stuff or something. He was okay as a person, but didnt' really know shit. He was good at one thing... turning a wrench. I was all looking at the newer civics going "O SHIT!!11 Four wire O2 sensor!?!?!?. I need THAT!!!" And then a J30 was in there that day. I was like "Damn, I need THAT!" pointing at the MAFS. The guy actually asked "What is that?" I almost immediatly died from lack of brain activity... This guy is a mechanic... Had been at that shop for ~1year I wanna say? and didnt' even know what a MAFS was.... He didnt' understand how stock KA rods held 400whp+ even after I explained it to him. He didnt' understand how the stock crank could hold 630whp+ after I explained it to him. He didn't really understand anything that wasn't a common process. Sure I was slow at putting things together, a lil clumsy per say around the shop compared to him or others, and they didn't keep me because someone with ASE certification was applying too. NTM I didn't really have any tools other than a Craftsman basic mechanic's set. But I can tell you that that guy was not the best and the brightest when it came to understanding cars. He might beat me on a brake job, but say we had to explain various parts of a car and how they function, I would have handed him is ASE certification in reading a few books. Oh, and he actually tried to say carburetors are better than fuel injection with cost not being an issue... That is just ignorance. Preference may say otherwise, but fuel injection is capable of much better tuning. No where else have I seen a car idle and drive smoother than on an AEM EMS system. NTM 250whp on 6psi w/BD manifold and stock internal KA.

Really, it always will depend on who you are specifically talking about. No two people are the same. No one category can describe more than one person. We all have our interests, we all have our strong points, we all have our weak points. Its just a fact of life. I don't think we will ever end our different points of view, but I don't wanna stop the discussion because it is going so well.

actually most of the designing and manufacturing of parts is outsourced these days..

...Yeah to people with degrees in Industrial Engineering


put a transmission in front of you, and we will see how much you learn, read as many books as you can first, then I want to see how fast you can take the transmission apart with all your knowledge but no experience... I gurantee it would prove my point in about half a minute, no matter how much you read about doing it, nothing makes you smarter then actually doing it.

Fair Enough... Then I'll go to college get a degree in engineering and we'll both design the lightest strongest transmission we can. I garuntee you that all the "this part goes here" you know wont last a half a minute


and yes, a racing team would rather have someone experienced then some snot nosed kid who just took his final exam. if you fail to see that, Im done arguing lol, because it is just pointless now..

That must be why everyone on the team down to the tire guy have Degrees. :/

Experience helps but knowing why your doing something from the get go will further more that just doing something blindly. Case in point Nissan Fanatics example... Ive met many mechanics who are the exact same. They know how to fix something and what happens when its broken but they dont know the Why (why it broke / why its there / what it does). Nissan Fanatic hit it on the head with that last post.

go in the navy for nuke tech fanatic, great job, but experience doesn't matter these days does it?

The only thing that they looked at was my ASVAB score and I am having a Nuclear specialist give me a test. My entrance depends on that. They give you basic schooling and then you learn on the job as well.

O.J.T. is far better then college as far as the mechanic field is concerend

I'll give you that. And most dealerships or even privately owned shops will pay for you to get schooling in different fields. But I would definatly recommend at least getting on at a professional shop so you can work your way up. Doing each job and learning it well makes for a much better overall mechanic than just someone who knows something super hard and nothing about the rest.

Then I'll go to college get a degree in engineering and we'll both design the lightest strongest transmission we can. I garuntee you that all the "this part goes here" you know wont last a half a minute

Or better yet, what to design this case out of, this gear out of, what type of oil should be used, clearances for this type of metal, the real engineering stuff. NTM machining....